[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill-meteor-meteor-debugging":3,"mdc-hjaxi9-key":36,"related-org-meteor-meteor-debugging":770,"related-repo-meteor-meteor-debugging":931},{"slug":4,"name":4,"fn":5,"description":6,"org":7,"tags":11,"stars":20,"repoUrl":21,"updatedAt":22,"license":23,"forks":24,"topics":25,"repo":31,"sourceUrl":34,"mdContent":35},"meteor-debugging","diagnose failures in Meteor 3 applications","Use when diagnosing an unexplained failure in a Meteor 3 application before the failing layer or fix is known. Triggers on server crashes, client-only errors, stuck subscriptions, DDP or WebSocket disconnects, Minimongo\u002Fserver data mismatches, hanging or flaky tests, slow builds, --inspect, console.log, .only, Playwright traces, or requests to debug a Meteor app. Use this skill when evidence must distinguish Meteor tool, server, client, data, test, browser, mobile, or production boundaries. For test setup and authoring use meteor-testing; after confirming a domain cause, hand the repair to the owning skill.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},"meteor","Meteor","https:\u002F\u002Fpexgzepcugksgbtrxkhf.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Forg-logos\u002Fmeteor.png",[12,14,17],{"name":9,"slug":8,"type":13},"tag",{"name":15,"slug":16,"type":13},"WebSockets","websockets",{"name":18,"slug":19,"type":13},"Debugging","debugging",4,"https:\u002F\u002Fgithub.com\u002Fmeteor\u002Fagent-skills","2026-08-28T15:08:40.430401","MIT",0,[26,27,28,29,8,30],"agent-skills","ai-agents","claude-code","codex","meteorjs",{"repoUrl":21,"stars":20,"forks":24,"topics":32,"description":33},[26,27,28,29,8,30],"Meteor-maintained Agent Skills for building, migrating, testing, securing, and deploying Meteor 3 applications.","https:\u002F\u002Fgithub.com\u002Fmeteor\u002Fagent-skills\u002Ftree\u002FHEAD\u002Fskills\u002Fmeteor-debugging","---\nname: meteor-debugging\ndescription: >\n  Use when diagnosing an unexplained failure in a Meteor 3 application before\n  the failing layer or fix is known. Triggers on server crashes, client-only\n  errors, stuck subscriptions, DDP or WebSocket disconnects, Minimongo\u002Fserver\n  data mismatches, hanging or flaky tests, slow builds, --inspect, console.log,\n  .only, Playwright traces, or requests to debug a Meteor app. Use this skill\n  when evidence must distinguish Meteor tool, server, client, data, test,\n  browser, mobile, or production boundaries. For test setup and authoring use\n  meteor-testing; after confirming a domain cause, hand the repair to the\n  owning skill.\nmetadata:\n  author: meteor\n  kind: workflow\n  meteor: \">=3.0\"\n  area: ops\n  tagline: \"Diagnose Meteor 3 failures across builds, server\u002Fclient runtime, DDP, Mongo, tests, browsers, mobile, and production.\"\n  bundle: [\"essentials\", \"fullstack\", \"ops\"]\n  docs_synced_at: \"2026-08-27\"\nlicense: MIT\n---\n\n# Debug Meteor applications\n\nFind the first failing boundary before changing behavior. Produce a stable\nreproduction, evidence for one cause, and a verification target. Then use the\nskill that owns the repair.\n\n## Diagnosis loop\n\n1. Record the exact symptom, complete error and stack, command or user action,\n   Meteor release, resolved Atmosphere and npm versions, environment, and last\n   known working state.\n2. Reproduce with the narrowest stable command or action before editing.\n3. Classify the first uncertain boundary with the table below.\n4. Read existing evidence before adding instrumentation. Compare client and\n   server output, recent changes, and passing versus failing environments.\n5. Add one targeted observation only when current evidence cannot answer the\n   question. Do not combine a diagnostic change with a speculative fix.\n6. State one falsifiable hypothesis and the observation that would reject it.\n7. Change one variable, reproduce, and trace a bad value or event backward to\n   its origin.\n8. Fix the confirmed cause through the owning skill. Add a regression at the\n   lowest reliable layer when the failure can recur.\n9. Re-run the focused reproduction, then the affected suite or\n   production-like check. Remove temporary diagnostics and artifacts.\n\nIf several evidence-backed hypotheses fail, revisit the boundary map and\nassumptions before stacking mitigations or widening the change.\n\n## Select the boundary\n\n| Symptom | First evidence | Read |\n|---|---|---|\n| Build stalls, compilation error, rebuild regression, Rspack or SWC failure | Full build output, `--verbose`, exact release and build-package versions | [Build debugging](references\u002Fbuild-debugging.md) |\n| Server crashes before startup or fails in a method, publication, job, or hook | Earliest server stack, startup order, request-correlated evidence | [Runtime and inspector](references\u002Fruntime-and-inspector.md) |\n| Client stack, stale render, reactive loop, or client\u002Fserver disagreement | Browser stack, rendered state, reactive invalidation, server comparison | [Runtime and inspector](references\u002Fruntime-and-inspector.md), then the React or Blaze skill |\n| Missing documents, stuck subscription, reconnect, or proxy\u002FWebSocket symptom | Server query, publication output, DDP state, subscription readiness, Minimongo | [DDP and data](references\u002Fddp-and-data.md) |\n| Current output cannot distinguish an entry, guard, branch, state change, or event order | A small set of redacted boundary observations | [Logs and instrumentation](references\u002Flogs-and-instrumentation.md) |\n| Meteor Mocha failure, suite-only failure, async flake, or browser E2E failure | Full hook output, client\u002Fserver test counts, existing report and trace | [Tests and browser](references\u002Ftests-and-browser.md) |\n| Cordova or HCP problem, device-only failure, or live incident | Device logs and versions; deployment logs, health, metrics, release diff | [Mobile and production](references\u002Fmobile-and-production.md) |\n\nA syntax error needs its stack, not browser tracing. A browser-only hydration\nrace needs client evidence, not a server inspector. Use the smallest tool that\ncan reject the current hypothesis.\n\n## Evidence rules\n\n- Label runtime side and operation in temporary logs. Include a request or\n  event identifier only when concurrent flows can interleave.\n- Record selected, redacted fields. Never log credentials, tokens, cookies,\n  authorization headers, private settings, unrestricted method arguments, or\n  full user documents.\n- Treat `console.log` as temporary instrumentation. Use `meteor\u002Flogging` or the\n  application's established structured logger for evidence that must persist.\n- Use `.only` only as temporary local test focus when the runner and execution\n  mode support it. Remove it and run the broader suite before handoff.\n- Prefer observable readiness over sleeps: subscription ready, settled method,\n  expected document, visible UI, or a specific browser event.\n- Inspect existing Playwright reports and traces before starting an interactive\n  browser. For a `playwright-cli` request, first check whether the executable\n  is available. If it is unavailable, obtain authority before installation or\n  browser downloads. Explicitly report that availability result and request\n  the authority rather than only asking for the application URL. Use it only\n  for a real browser boundary.\n- For an authorized ad hoc `playwright-cli` reproduction: **MUST** run\n  `snapshot`, `console`, and `requests`, start tracing before the failing\n  action, stop tracing immediately after it, and close the browser session.\n  Do not substitute source inspection for this browser evidence or omit the\n  trace because the console or network already suggests a cause.\n- Use only an application path or URL the user placed in scope. If the current\n  workspace has no app and the prompt gives no URL, ask for one. Do not scan\n  unrelated directories, processes, or ports to discover an application.\n- Read through `meteor shell` and `meteor mongo` before mutating. Never use\n  `meteor reset --db` as a diagnostic shortcut.\n- On production, do not expose an inspector, deploy a debug build, retain\n  secret-bearing traces, or experiment on live data.\n\n## Handoffs\n\n| Confirmed cause | Continue with |\n|---|---|\n| Test setup, design, driver, fixture, or new regression structure | `meteor-testing` |\n| SWC, Rspack, watcher, cache, build graph, or generated handoff | `meteor-modern-build-stack` or `migrate-to-rspack` |\n| Method, publication, Mongo\u002FMinimongo, React, Blaze, accounts, or security | Matching domain skill |\n| Galaxy, container, proxy, environment, health check, or rollout | `meteor-deployment` |\n| Documented community package behavior | `meteor-community-packages`, then the upstream repository |\n| Pure Node.js, browser, database, or runner failure with no Meteor boundary | General debugging guidance |\n\n## Cleanup\n\nBefore handoff:\n\n1. Remove only the logs, `debugger` statements, `.only` markers, pauses,\n   temporary routes, and debug settings added for this investigation.\n2. Delete or protect screenshots, traces, profiles, saved browser state, and\n   dumps according to their data sensitivity.\n3. Re-run the original reproduction and the affected suite.\n4. Report the confirmed cause, evidence, fix, verification, and any remaining\n   uncertainty.\n\n## Anti-patterns\n\n- Edit the assertion before checking setup, async completion, and skipped\n  client coverage.\n- Add logs across the application without a hypothesis.\n- Serialize every runtime object indiscriminately. Circular values, reactive\n  wrappers, getters, binary data, and large documents need selected snapshots.\n- Treat a focused passing test as success when the suite still fails.\n- Add arbitrary sleeps, broad selectors, retries, or heap increases until the\n  symptom disappears.\n- Install browser tooling or scaffold tests for a server, build, or database\n  failure.\n\n## References\n\n- [Runtime and inspector](references\u002Fruntime-and-inspector.md)\n- [Logs and instrumentation](references\u002Flogs-and-instrumentation.md)\n- [Tests and browser](references\u002Ftests-and-browser.md)\n- [Build debugging](references\u002Fbuild-debugging.md)\n- [DDP and data](references\u002Fddp-and-data.md)\n- [Mobile and production](references\u002Fmobile-and-production.md)\n- [Evaluation cases](references\u002Feval-cases.md)\n",{"data":37,"body":47},{"name":4,"description":6,"metadata":38,"license":23},{"author":8,"kind":39,"meteor":40,"area":41,"tagline":42,"bundle":43,"docs_synced_at":46},"workflow",">=3.0","ops","Diagnose Meteor 3 failures across builds, server\u002Fclient runtime, DDP, Mongo, tests, browsers, mobile, and production.",[44,45,41],"essentials","fullstack","2026-08-27",{"type":48,"children":49},"root",[50,59,65,72,122,127,133,330,335,341,490,496,622,628,633,671,677,710,716],{"type":51,"tag":52,"props":53,"children":55},"element","h1",{"id":54},"debug-meteor-applications",[56],{"type":57,"value":58},"text","Debug Meteor applications",{"type":51,"tag":60,"props":61,"children":62},"p",{},[63],{"type":57,"value":64},"Find the first failing boundary before changing behavior. Produce a stable\nreproduction, evidence for one cause, and a verification target. Then use the\nskill that owns the repair.",{"type":51,"tag":66,"props":67,"children":69},"h2",{"id":68},"diagnosis-loop",[70],{"type":57,"value":71},"Diagnosis loop",{"type":51,"tag":73,"props":74,"children":75},"ol",{},[76,82,87,92,97,102,107,112,117],{"type":51,"tag":77,"props":78,"children":79},"li",{},[80],{"type":57,"value":81},"Record the exact symptom, complete error and stack, command or user action,\nMeteor release, resolved Atmosphere and npm versions, environment, and last\nknown working state.",{"type":51,"tag":77,"props":83,"children":84},{},[85],{"type":57,"value":86},"Reproduce with the narrowest stable command or action before editing.",{"type":51,"tag":77,"props":88,"children":89},{},[90],{"type":57,"value":91},"Classify the first uncertain boundary with the table below.",{"type":51,"tag":77,"props":93,"children":94},{},[95],{"type":57,"value":96},"Read existing evidence before adding instrumentation. Compare client and\nserver output, recent changes, and passing versus failing environments.",{"type":51,"tag":77,"props":98,"children":99},{},[100],{"type":57,"value":101},"Add one targeted observation only when current evidence cannot answer the\nquestion. Do not combine a diagnostic change with a speculative fix.",{"type":51,"tag":77,"props":103,"children":104},{},[105],{"type":57,"value":106},"State one falsifiable hypothesis and the observation that would reject it.",{"type":51,"tag":77,"props":108,"children":109},{},[110],{"type":57,"value":111},"Change one variable, reproduce, and trace a bad value or event backward to\nits origin.",{"type":51,"tag":77,"props":113,"children":114},{},[115],{"type":57,"value":116},"Fix the confirmed cause through the owning skill. Add a regression at the\nlowest reliable layer when the failure can recur.",{"type":51,"tag":77,"props":118,"children":119},{},[120],{"type":57,"value":121},"Re-run the focused reproduction, then the affected suite or\nproduction-like check. Remove temporary diagnostics and artifacts.",{"type":51,"tag":60,"props":123,"children":124},{},[125],{"type":57,"value":126},"If several evidence-backed hypotheses fail, revisit the boundary map and\nassumptions before stacking mitigations or widening the change.",{"type":51,"tag":66,"props":128,"children":130},{"id":129},"select-the-boundary",[131],{"type":57,"value":132},"Select the boundary",{"type":51,"tag":134,"props":135,"children":136},"table",{},[137,161],{"type":51,"tag":138,"props":139,"children":140},"thead",{},[141],{"type":51,"tag":142,"props":143,"children":144},"tr",{},[145,151,156],{"type":51,"tag":146,"props":147,"children":148},"th",{},[149],{"type":57,"value":150},"Symptom",{"type":51,"tag":146,"props":152,"children":153},{},[154],{"type":57,"value":155},"First evidence",{"type":51,"tag":146,"props":157,"children":158},{},[159],{"type":57,"value":160},"Read",{"type":51,"tag":162,"props":163,"children":164},"tbody",{},[165,198,220,242,264,286,308],{"type":51,"tag":142,"props":166,"children":167},{},[168,174,188],{"type":51,"tag":169,"props":170,"children":171},"td",{},[172],{"type":57,"value":173},"Build stalls, compilation error, rebuild regression, Rspack or SWC failure",{"type":51,"tag":169,"props":175,"children":176},{},[177,179,186],{"type":57,"value":178},"Full build output, ",{"type":51,"tag":180,"props":181,"children":183},"code",{"className":182},[],[184],{"type":57,"value":185},"--verbose",{"type":57,"value":187},", exact release and build-package versions",{"type":51,"tag":169,"props":189,"children":190},{},[191],{"type":51,"tag":192,"props":193,"children":195},"a",{"href":194},"references\u002Fbuild-debugging.md",[196],{"type":57,"value":197},"Build debugging",{"type":51,"tag":142,"props":199,"children":200},{},[201,206,211],{"type":51,"tag":169,"props":202,"children":203},{},[204],{"type":57,"value":205},"Server crashes before startup or fails in a method, publication, job, or hook",{"type":51,"tag":169,"props":207,"children":208},{},[209],{"type":57,"value":210},"Earliest server stack, startup order, request-correlated evidence",{"type":51,"tag":169,"props":212,"children":213},{},[214],{"type":51,"tag":192,"props":215,"children":217},{"href":216},"references\u002Fruntime-and-inspector.md",[218],{"type":57,"value":219},"Runtime and inspector",{"type":51,"tag":142,"props":221,"children":222},{},[223,228,233],{"type":51,"tag":169,"props":224,"children":225},{},[226],{"type":57,"value":227},"Client stack, stale render, reactive loop, or client\u002Fserver disagreement",{"type":51,"tag":169,"props":229,"children":230},{},[231],{"type":57,"value":232},"Browser stack, rendered state, reactive invalidation, server comparison",{"type":51,"tag":169,"props":234,"children":235},{},[236,240],{"type":51,"tag":192,"props":237,"children":238},{"href":216},[239],{"type":57,"value":219},{"type":57,"value":241},", then the React or Blaze skill",{"type":51,"tag":142,"props":243,"children":244},{},[245,250,255],{"type":51,"tag":169,"props":246,"children":247},{},[248],{"type":57,"value":249},"Missing documents, stuck subscription, reconnect, or proxy\u002FWebSocket symptom",{"type":51,"tag":169,"props":251,"children":252},{},[253],{"type":57,"value":254},"Server query, publication output, DDP state, subscription readiness, Minimongo",{"type":51,"tag":169,"props":256,"children":257},{},[258],{"type":51,"tag":192,"props":259,"children":261},{"href":260},"references\u002Fddp-and-data.md",[262],{"type":57,"value":263},"DDP and data",{"type":51,"tag":142,"props":265,"children":266},{},[267,272,277],{"type":51,"tag":169,"props":268,"children":269},{},[270],{"type":57,"value":271},"Current output cannot distinguish an entry, guard, branch, state change, or event order",{"type":51,"tag":169,"props":273,"children":274},{},[275],{"type":57,"value":276},"A small set of redacted boundary observations",{"type":51,"tag":169,"props":278,"children":279},{},[280],{"type":51,"tag":192,"props":281,"children":283},{"href":282},"references\u002Flogs-and-instrumentation.md",[284],{"type":57,"value":285},"Logs and instrumentation",{"type":51,"tag":142,"props":287,"children":288},{},[289,294,299],{"type":51,"tag":169,"props":290,"children":291},{},[292],{"type":57,"value":293},"Meteor Mocha failure, suite-only failure, async flake, or browser E2E failure",{"type":51,"tag":169,"props":295,"children":296},{},[297],{"type":57,"value":298},"Full hook output, client\u002Fserver test counts, existing report and trace",{"type":51,"tag":169,"props":300,"children":301},{},[302],{"type":51,"tag":192,"props":303,"children":305},{"href":304},"references\u002Ftests-and-browser.md",[306],{"type":57,"value":307},"Tests and browser",{"type":51,"tag":142,"props":309,"children":310},{},[311,316,321],{"type":51,"tag":169,"props":312,"children":313},{},[314],{"type":57,"value":315},"Cordova or HCP problem, device-only failure, or live incident",{"type":51,"tag":169,"props":317,"children":318},{},[319],{"type":57,"value":320},"Device logs and versions; deployment logs, health, metrics, release diff",{"type":51,"tag":169,"props":322,"children":323},{},[324],{"type":51,"tag":192,"props":325,"children":327},{"href":326},"references\u002Fmobile-and-production.md",[328],{"type":57,"value":329},"Mobile and production",{"type":51,"tag":60,"props":331,"children":332},{},[333],{"type":57,"value":334},"A syntax error needs its stack, not browser tracing. A browser-only hydration\nrace needs client evidence, not a server inspector. Use the smallest tool that\ncan reject the current hypothesis.",{"type":51,"tag":66,"props":336,"children":338},{"id":337},"evidence-rules",[339],{"type":57,"value":340},"Evidence rules",{"type":51,"tag":342,"props":343,"children":344},"ul",{},[345,350,355,376,389,394,407,451,456,485],{"type":51,"tag":77,"props":346,"children":347},{},[348],{"type":57,"value":349},"Label runtime side and operation in temporary logs. Include a request or\nevent identifier only when concurrent flows can interleave.",{"type":51,"tag":77,"props":351,"children":352},{},[353],{"type":57,"value":354},"Record selected, redacted fields. Never log credentials, tokens, cookies,\nauthorization headers, private settings, unrestricted method arguments, or\nfull user documents.",{"type":51,"tag":77,"props":356,"children":357},{},[358,360,366,368,374],{"type":57,"value":359},"Treat ",{"type":51,"tag":180,"props":361,"children":363},{"className":362},[],[364],{"type":57,"value":365},"console.log",{"type":57,"value":367}," as temporary instrumentation. Use ",{"type":51,"tag":180,"props":369,"children":371},{"className":370},[],[372],{"type":57,"value":373},"meteor\u002Flogging",{"type":57,"value":375}," or the\napplication's established structured logger for evidence that must persist.",{"type":51,"tag":77,"props":377,"children":378},{},[379,381,387],{"type":57,"value":380},"Use ",{"type":51,"tag":180,"props":382,"children":384},{"className":383},[],[385],{"type":57,"value":386},".only",{"type":57,"value":388}," only as temporary local test focus when the runner and execution\nmode support it. Remove it and run the broader suite before handoff.",{"type":51,"tag":77,"props":390,"children":391},{},[392],{"type":57,"value":393},"Prefer observable readiness over sleeps: subscription ready, settled method,\nexpected document, visible UI, or a specific browser event.",{"type":51,"tag":77,"props":395,"children":396},{},[397,399,405],{"type":57,"value":398},"Inspect existing Playwright reports and traces before starting an interactive\nbrowser. For a ",{"type":51,"tag":180,"props":400,"children":402},{"className":401},[],[403],{"type":57,"value":404},"playwright-cli",{"type":57,"value":406}," request, first check whether the executable\nis available. If it is unavailable, obtain authority before installation or\nbrowser downloads. Explicitly report that availability result and request\nthe authority rather than only asking for the application URL. Use it only\nfor a real browser boundary.",{"type":51,"tag":77,"props":408,"children":409},{},[410,412,417,419,425,427,433,435,441,443,449],{"type":57,"value":411},"For an authorized ad hoc ",{"type":51,"tag":180,"props":413,"children":415},{"className":414},[],[416],{"type":57,"value":404},{"type":57,"value":418}," reproduction: ",{"type":51,"tag":420,"props":421,"children":422},"strong",{},[423],{"type":57,"value":424},"MUST",{"type":57,"value":426}," run\n",{"type":51,"tag":180,"props":428,"children":430},{"className":429},[],[431],{"type":57,"value":432},"snapshot",{"type":57,"value":434},", ",{"type":51,"tag":180,"props":436,"children":438},{"className":437},[],[439],{"type":57,"value":440},"console",{"type":57,"value":442},", and ",{"type":51,"tag":180,"props":444,"children":446},{"className":445},[],[447],{"type":57,"value":448},"requests",{"type":57,"value":450},", start tracing before the failing\naction, stop tracing immediately after it, and close the browser session.\nDo not substitute source inspection for this browser evidence or omit the\ntrace because the console or network already suggests a cause.",{"type":51,"tag":77,"props":452,"children":453},{},[454],{"type":57,"value":455},"Use only an application path or URL the user placed in scope. If the current\nworkspace has no app and the prompt gives no URL, ask for one. Do not scan\nunrelated directories, processes, or ports to discover an application.",{"type":51,"tag":77,"props":457,"children":458},{},[459,461,467,469,475,477,483],{"type":57,"value":460},"Read through ",{"type":51,"tag":180,"props":462,"children":464},{"className":463},[],[465],{"type":57,"value":466},"meteor shell",{"type":57,"value":468}," and ",{"type":51,"tag":180,"props":470,"children":472},{"className":471},[],[473],{"type":57,"value":474},"meteor mongo",{"type":57,"value":476}," before mutating. Never use\n",{"type":51,"tag":180,"props":478,"children":480},{"className":479},[],[481],{"type":57,"value":482},"meteor reset --db",{"type":57,"value":484}," as a diagnostic shortcut.",{"type":51,"tag":77,"props":486,"children":487},{},[488],{"type":57,"value":489},"On production, do not expose an inspector, deploy a debug build, retain\nsecret-bearing traces, or experiment on live data.",{"type":51,"tag":66,"props":491,"children":493},{"id":492},"handoffs",[494],{"type":57,"value":495},"Handoffs",{"type":51,"tag":134,"props":497,"children":498},{},[499,515],{"type":51,"tag":138,"props":500,"children":501},{},[502],{"type":51,"tag":142,"props":503,"children":504},{},[505,510],{"type":51,"tag":146,"props":506,"children":507},{},[508],{"type":57,"value":509},"Confirmed cause",{"type":51,"tag":146,"props":511,"children":512},{},[513],{"type":57,"value":514},"Continue with",{"type":51,"tag":162,"props":516,"children":517},{},[518,535,560,573,590,609],{"type":51,"tag":142,"props":519,"children":520},{},[521,526],{"type":51,"tag":169,"props":522,"children":523},{},[524],{"type":57,"value":525},"Test setup, design, driver, fixture, or new regression structure",{"type":51,"tag":169,"props":527,"children":528},{},[529],{"type":51,"tag":180,"props":530,"children":532},{"className":531},[],[533],{"type":57,"value":534},"meteor-testing",{"type":51,"tag":142,"props":536,"children":537},{},[538,543],{"type":51,"tag":169,"props":539,"children":540},{},[541],{"type":57,"value":542},"SWC, Rspack, watcher, cache, build graph, or generated handoff",{"type":51,"tag":169,"props":544,"children":545},{},[546,552,554],{"type":51,"tag":180,"props":547,"children":549},{"className":548},[],[550],{"type":57,"value":551},"meteor-modern-build-stack",{"type":57,"value":553}," or ",{"type":51,"tag":180,"props":555,"children":557},{"className":556},[],[558],{"type":57,"value":559},"migrate-to-rspack",{"type":51,"tag":142,"props":561,"children":562},{},[563,568],{"type":51,"tag":169,"props":564,"children":565},{},[566],{"type":57,"value":567},"Method, publication, Mongo\u002FMinimongo, React, Blaze, accounts, or security",{"type":51,"tag":169,"props":569,"children":570},{},[571],{"type":57,"value":572},"Matching domain skill",{"type":51,"tag":142,"props":574,"children":575},{},[576,581],{"type":51,"tag":169,"props":577,"children":578},{},[579],{"type":57,"value":580},"Galaxy, container, proxy, environment, health check, or rollout",{"type":51,"tag":169,"props":582,"children":583},{},[584],{"type":51,"tag":180,"props":585,"children":587},{"className":586},[],[588],{"type":57,"value":589},"meteor-deployment",{"type":51,"tag":142,"props":591,"children":592},{},[593,598],{"type":51,"tag":169,"props":594,"children":595},{},[596],{"type":57,"value":597},"Documented community package behavior",{"type":51,"tag":169,"props":599,"children":600},{},[601,607],{"type":51,"tag":180,"props":602,"children":604},{"className":603},[],[605],{"type":57,"value":606},"meteor-community-packages",{"type":57,"value":608},", then the upstream repository",{"type":51,"tag":142,"props":610,"children":611},{},[612,617],{"type":51,"tag":169,"props":613,"children":614},{},[615],{"type":57,"value":616},"Pure Node.js, browser, database, or runner failure with no Meteor boundary",{"type":51,"tag":169,"props":618,"children":619},{},[620],{"type":57,"value":621},"General debugging guidance",{"type":51,"tag":66,"props":623,"children":625},{"id":624},"cleanup",[626],{"type":57,"value":627},"Cleanup",{"type":51,"tag":60,"props":629,"children":630},{},[631],{"type":57,"value":632},"Before handoff:",{"type":51,"tag":73,"props":634,"children":635},{},[636,656,661,666],{"type":51,"tag":77,"props":637,"children":638},{},[639,641,647,649,654],{"type":57,"value":640},"Remove only the logs, ",{"type":51,"tag":180,"props":642,"children":644},{"className":643},[],[645],{"type":57,"value":646},"debugger",{"type":57,"value":648}," statements, ",{"type":51,"tag":180,"props":650,"children":652},{"className":651},[],[653],{"type":57,"value":386},{"type":57,"value":655}," markers, pauses,\ntemporary routes, and debug settings added for this investigation.",{"type":51,"tag":77,"props":657,"children":658},{},[659],{"type":57,"value":660},"Delete or protect screenshots, traces, profiles, saved browser state, and\ndumps according to their data sensitivity.",{"type":51,"tag":77,"props":662,"children":663},{},[664],{"type":57,"value":665},"Re-run the original reproduction and the affected suite.",{"type":51,"tag":77,"props":667,"children":668},{},[669],{"type":57,"value":670},"Report the confirmed cause, evidence, fix, verification, and any remaining\nuncertainty.",{"type":51,"tag":66,"props":672,"children":674},{"id":673},"anti-patterns",[675],{"type":57,"value":676},"Anti-patterns",{"type":51,"tag":342,"props":678,"children":679},{},[680,685,690,695,700,705],{"type":51,"tag":77,"props":681,"children":682},{},[683],{"type":57,"value":684},"Edit the assertion before checking setup, async completion, and skipped\nclient coverage.",{"type":51,"tag":77,"props":686,"children":687},{},[688],{"type":57,"value":689},"Add logs across the application without a hypothesis.",{"type":51,"tag":77,"props":691,"children":692},{},[693],{"type":57,"value":694},"Serialize every runtime object indiscriminately. Circular values, reactive\nwrappers, getters, binary data, and large documents need selected snapshots.",{"type":51,"tag":77,"props":696,"children":697},{},[698],{"type":57,"value":699},"Treat a focused passing test as success when the suite still fails.",{"type":51,"tag":77,"props":701,"children":702},{},[703],{"type":57,"value":704},"Add arbitrary sleeps, broad selectors, retries, or heap increases until the\nsymptom disappears.",{"type":51,"tag":77,"props":706,"children":707},{},[708],{"type":57,"value":709},"Install browser tooling or scaffold tests for a server, build, or database\nfailure.",{"type":51,"tag":66,"props":711,"children":713},{"id":712},"references",[714],{"type":57,"value":715},"References",{"type":51,"tag":342,"props":717,"children":718},{},[719,726,733,740,747,754,761],{"type":51,"tag":77,"props":720,"children":721},{},[722],{"type":51,"tag":192,"props":723,"children":724},{"href":216},[725],{"type":57,"value":219},{"type":51,"tag":77,"props":727,"children":728},{},[729],{"type":51,"tag":192,"props":730,"children":731},{"href":282},[732],{"type":57,"value":285},{"type":51,"tag":77,"props":734,"children":735},{},[736],{"type":51,"tag":192,"props":737,"children":738},{"href":304},[739],{"type":57,"value":307},{"type":51,"tag":77,"props":741,"children":742},{},[743],{"type":51,"tag":192,"props":744,"children":745},{"href":194},[746],{"type":57,"value":197},{"type":51,"tag":77,"props":748,"children":749},{},[750],{"type":51,"tag":192,"props":751,"children":752},{"href":260},[753],{"type":57,"value":263},{"type":51,"tag":77,"props":755,"children":756},{},[757],{"type":51,"tag":192,"props":758,"children":759},{"href":326},[760],{"type":57,"value":329},{"type":51,"tag":77,"props":762,"children":763},{},[764],{"type":51,"tag":192,"props":765,"children":767},{"href":766},"references\u002Feval-cases.md",[768],{"type":57,"value":769},"Evaluation cases",{"items":771,"total":930},[772,789,803,813,819,835,849,862,877,889,902,917],{"slug":773,"name":773,"fn":774,"description":775,"org":776,"tags":777,"stars":20,"repoUrl":21,"updatedAt":788},"meteor-accounts","implement authentication in Meteor apps","Use when wiring up authentication in a Meteor 3 app. Triggers on accounts-password, accounts-base, OAuth (Google, Facebook, GitHub, Apple, Twitter, Meetup, Weibo), accounts-2fa, accounts-passwordless, ServiceConfiguration.configurations.upsertAsync, Accounts.createUserAsync, Accounts.setPasswordAsync, Accounts.forgotPassword, Accounts.resetPassword, Accounts.verifyEmail, useHttpOnlyCookies, clientStorage, Meteor.loginWithPasswordAnd2faCode, email verification. Use this skill when the user asks about signups, signins, or asks about token storage vs HttpOnly cookies.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[778,781,784,785],{"name":779,"slug":780,"type":13},"Auth","auth",{"name":782,"slug":783,"type":13},"Authentication","authentication",{"name":9,"slug":8,"type":13},{"name":786,"slug":787,"type":13},"OAuth","oauth","2026-08-28T15:08:40.058032",{"slug":790,"name":790,"fn":791,"description":792,"org":793,"tags":794,"stars":20,"repoUrl":21,"updatedAt":802},"meteor-blaze","build and debug Meteor Blaze interfaces","Use when building or debugging Blaze interfaces in Meteor 3: meteor create --blaze, Spacebars templates, Template helpers and events, lifecycle hooks, Tracker, ReactiveVar or ReactiveDict, template subscriptions, Promise helpers, #let async states, Template.dynamic, Blaze.render, and blaze-hot HMR with the Meteor bundler. Triggers on stale async helper results, lost reactivity after await, data-context lookup surprises, duplicate DOM integrations after HMR, Rspack full reloads, or raw HTML in triple braces. Use this skill when the user asks about reusable Blaze components, current Blaze packages, Rspack entry imports, or testing Blaze templates. For Meteor 2 to 3 upgrades, use migrate-to-meteor-3 instead.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[795,798,799],{"name":796,"slug":797,"type":13},"Frontend","frontend",{"name":9,"slug":8,"type":13},{"name":800,"slug":801,"type":13},"Web Development","web-development","2026-08-28T15:09:37.601349",{"slug":606,"name":606,"fn":804,"description":805,"org":806,"tags":807,"stars":20,"repoUrl":21,"updatedAt":812},"manage Meteor community packages","Use when choosing, evaluating, adopting, configuring, or debugging a package from Meteor's documented community catalog, or moving from a community package to a promoted core package such as roles. Triggers on community package recommendations, Atmosphere vs npm selection, Packosphere maintenance checks, jam:* helpers, Meteor.publish.once, Meteor.publish.stream, meteor-rpc, Wormhole, cluster, and mail-preview. Use this skill when the user asks which maintained package fits or how its documented integration works. Route Meteor 2-to-3 package failures to migrate-to-meteor-3 and underlying core API design to its owning skill.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[808,811],{"name":809,"slug":810,"type":13},"Engineering","engineering",{"name":9,"slug":8,"type":13},"2026-08-28T15:08:45.28079",{"slug":4,"name":4,"fn":5,"description":6,"org":814,"tags":815,"stars":20,"repoUrl":21,"updatedAt":22},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[816,817,818],{"name":18,"slug":19,"type":13},{"name":9,"slug":8,"type":13},{"name":15,"slug":16,"type":13},{"slug":589,"name":589,"fn":820,"description":821,"org":822,"tags":823,"stars":20,"repoUrl":21,"updatedAt":834},"deploy Meteor 3 applications","Use when deploying a Meteor 3 application. Triggers on meteor build, meteor deploy, Galaxy Push to Deploy, Galaxy Mode, Repository Mode, DEPLOY_HOSTNAME, Docker, Kubernetes, settings.json, METEOR_SETTINGS, MONGO_URL, MONGO_OPLOG_URL, ROOT_URL, PORT, HTTP_FORWARDED_COUNT, NODE_OPTIONS, health checks, pre-deploy commands, hot code push, --architecture os.linux.x86_64, --server-only, or a deployed Node.js version mismatch. Use this skill when the user asks about shipping the app, asks about production config, or asks about containerizing.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[824,827,830,833],{"name":825,"slug":826,"type":13},"Deployment","deployment",{"name":828,"slug":829,"type":13},"Docker","docker",{"name":831,"slug":832,"type":13},"Kubernetes","kubernetes",{"name":9,"slug":8,"type":13},"2026-08-28T15:08:44.881769",{"slug":836,"name":836,"fn":837,"description":838,"org":839,"tags":840,"stars":20,"repoUrl":21,"updatedAt":848},"meteor-methods","author and debug Meteor methods","Use when authoring or debugging Meteor methods (Meteor.methods, Meteor.call, Meteor.callAsync). Triggers on argument validation with check(), optimistic UI stubs, latency compensation, Meteor.Error handling, and DDPRateLimiter. Use this skill when the user asks about server-side mutation, asks about rate limiting RPC, or asks about wrapping a method with auth checks.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[841,844,847],{"name":842,"slug":843,"type":13},"API Development","api-development",{"name":845,"slug":846,"type":13},"Backend","backend",{"name":9,"slug":8,"type":13},"2026-08-28T15:09:38.691128",{"slug":551,"name":551,"fn":850,"description":851,"org":852,"tags":853,"stars":20,"repoUrl":21,"updatedAt":861},"configure Meteor 3 modern build stacks","Use when configuring or tuning the Meteor 3 modern build stack: SWC transpiler, SWC-based minifier, modern @parcel\u002Fwatcher, web-arch skipping in development, .meteorignore, and the Rspack bundler integration via the rspack Atmosphere package. Triggers on package.json \"meteor\": { \"modern\": true }, .swcrc, swc.config.js, [Transpiler] Used Babel Fallback logs, rspack.config.js, rspack.config.ts, defineConfig from @meteorjs\u002Frspack, Meteor.compileWith* helpers, Meteor.extendConfig, Meteor.extendSwcConfig vs Meteor.replaceSwcConfig, Meteor.splitVendorChunk, Meteor.persistDevFiles, Meteor.disablePlugins, Meteor.enablePortableBuild, HtmlRspackPlugin customization, RSPACK_DEVSERVER_PORT, TOOL_NODE_FLAGS for OOM, modern\u002Flegacy archs. Use this skill when the user asks about enabling the modern build stack, asks about SWC vs Babel in Meteor, asks about Rspack integration setup, or asks about customizing rspack.config.js. For converting an existing app's code to be Rspack-compatible, use migrate-to-rspack instead.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[854,857,858],{"name":855,"slug":856,"type":13},"Build","build",{"name":9,"slug":8,"type":13},{"name":859,"slug":860,"type":13},"Performance","performance","2026-08-28T15:09:42.877439",{"slug":863,"name":863,"fn":864,"description":865,"org":866,"tags":867,"stars":20,"repoUrl":21,"updatedAt":876},"meteor-mongo-minimongo","author and debug Meteor MongoDB queries","Use when authoring or debugging Mongo queries in Meteor 3. Triggers on Mongo.Collection, find\u002FfindOne, server async vs client Minimongo sync, oplog vs change streams, indexes, selectors, modifiers, projections. Use this skill when the user asks about Mongo on the server or asks about Minimongo on the client.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[868,871,872,873],{"name":869,"slug":870,"type":13},"Database","database",{"name":18,"slug":19,"type":13},{"name":9,"slug":8,"type":13},{"name":874,"slug":875,"type":13},"MongoDB","mongodb","2026-08-28T15:08:44.473981",{"slug":878,"name":878,"fn":879,"description":880,"org":881,"tags":882,"stars":20,"repoUrl":21,"updatedAt":888},"meteor-pubsub","author and debug Meteor publications","Use when authoring or debugging Meteor publications and subscriptions (Meteor.publish, Meteor.subscribe). Triggers on publication strategies (SERVER_MERGE, NO_MERGE, NO_MERGE_NO_HISTORY), the low-level publish API (added\u002Fchanged\u002Fremoved), cursor authorization, reactive joins, leaked documents. Use this skill when the user asks about pub\u002Fsub or asks about reactive data fetching.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[883,884,885],{"name":845,"slug":846,"type":13},{"name":9,"slug":8,"type":13},{"name":886,"slug":887,"type":13},"Real-time","real-time","2026-08-28T15:09:37.97396",{"slug":890,"name":890,"fn":891,"description":892,"org":893,"tags":894,"stars":20,"repoUrl":21,"updatedAt":901},"meteor-react","build and debug Meteor React interfaces","Use when building or debugging React interfaces in Meteor 3: meteor create --react, createRoot, JSX or TSX entry points, Rspack React detection, Fast Refresh, react-meteor-data, useTracker, useSubscribe, useFind, withTracker, Suspense, and Tracker.withComputation. Triggers on isLoading being treated as a boolean, useFind receiving fetch(), stale closure inputs, duplicate tracker side effects, unstable Suspense keys, lost reactivity after await, state reset after refresh, or React tests leaking computations. Use this skill when the user asks about a React skeleton, React-specific rspack.config rules, reactive data hooks, or classic versus Suspense integration. Route general bundler configuration to meteor-modern-build-stack and Meteor 2 upgrades to migrate-to-meteor-3.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[895,896,897,900],{"name":796,"slug":797,"type":13},{"name":9,"slug":8,"type":13},{"name":898,"slug":899,"type":13},"React","react",{"name":800,"slug":801,"type":13},"2026-08-28T15:09:37.193947",{"slug":903,"name":903,"fn":904,"description":905,"org":906,"tags":907,"stars":20,"repoUrl":21,"updatedAt":916},"meteor-security","audit and harden Meteor 3 applications","Use when auditing or hardening a Meteor 3 application. Triggers on missing check() on method arguments, missing this.userId guards on publications, browser-policy CSP, DDPRateLimiter rules, oauth-encryption via Accounts.config oauthSecretKey, audit-argument-checks, allow\u002Fdeny legacy patterns, BrowserPolicy.content.disallowInlineScripts, BrowserPolicy.framing.disallow. Use this skill when the user asks about hardening, asks about a security review, or asks about CSP for a third-party script (Stripe, Google Maps, fonts).\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[908,909,912,913],{"name":779,"slug":780,"type":13},{"name":910,"slug":911,"type":13},"Code Analysis","code-analysis",{"name":9,"slug":8,"type":13},{"name":914,"slug":915,"type":13},"Security","security","2026-08-28T15:09:32.604319",{"slug":534,"name":534,"fn":918,"description":919,"org":920,"tags":921,"stars":20,"repoUrl":21,"updatedAt":929},"write and repair Meteor test harnesses","Use when setting up, designing, writing, or repairing tests and test harnesses in a Meteor 3 app. Triggers on meteortesting:mocha, --driver-package, TEST_WATCH, TEST_BROWSER_DRIVER, MOCHA_GREP, meteor.testModule, focused tests, .only, Meteor.server.method_handlers, Meteor.server.publish_handlers, DDP.connect, --full-app integration mode, sinon, async test signatures, Playwright\u002FCypress E2E. Use this skill when the user asks about test runners, asks about testing publications, or asks about Jest vs Mocha in Meteor. For a failing, hanging, or flaky test whose failing layer or root cause is unknown, use meteor-debugging before changing the test or app.\n",{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[922,923,926],{"name":9,"slug":8,"type":13},{"name":924,"slug":925,"type":13},"QA","qa",{"name":927,"slug":928,"type":13},"Testing","testing","2026-08-28T15:09:38.330724",14,{"items":932,"total":930},[933,940,946,951,957,964,970],{"slug":773,"name":773,"fn":774,"description":775,"org":934,"tags":935,"stars":20,"repoUrl":21,"updatedAt":788},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[936,937,938,939],{"name":779,"slug":780,"type":13},{"name":782,"slug":783,"type":13},{"name":9,"slug":8,"type":13},{"name":786,"slug":787,"type":13},{"slug":790,"name":790,"fn":791,"description":792,"org":941,"tags":942,"stars":20,"repoUrl":21,"updatedAt":802},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[943,944,945],{"name":796,"slug":797,"type":13},{"name":9,"slug":8,"type":13},{"name":800,"slug":801,"type":13},{"slug":606,"name":606,"fn":804,"description":805,"org":947,"tags":948,"stars":20,"repoUrl":21,"updatedAt":812},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[949,950],{"name":809,"slug":810,"type":13},{"name":9,"slug":8,"type":13},{"slug":4,"name":4,"fn":5,"description":6,"org":952,"tags":953,"stars":20,"repoUrl":21,"updatedAt":22},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[954,955,956],{"name":18,"slug":19,"type":13},{"name":9,"slug":8,"type":13},{"name":15,"slug":16,"type":13},{"slug":589,"name":589,"fn":820,"description":821,"org":958,"tags":959,"stars":20,"repoUrl":21,"updatedAt":834},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[960,961,962,963],{"name":825,"slug":826,"type":13},{"name":828,"slug":829,"type":13},{"name":831,"slug":832,"type":13},{"name":9,"slug":8,"type":13},{"slug":836,"name":836,"fn":837,"description":838,"org":965,"tags":966,"stars":20,"repoUrl":21,"updatedAt":848},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[967,968,969],{"name":842,"slug":843,"type":13},{"name":845,"slug":846,"type":13},{"name":9,"slug":8,"type":13},{"slug":551,"name":551,"fn":850,"description":851,"org":971,"tags":972,"stars":20,"repoUrl":21,"updatedAt":861},{"slug":8,"name":9,"logoUrl":10,"githubOrg":8},[973,974,975],{"name":855,"slug":856,"type":13},{"name":9,"slug":8,"type":13},{"name":859,"slug":860,"type":13}]