[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill-circle-use-gateway":3,"mdc-iu8udq-key":35,"related-repo-circle-use-gateway":1504,"related-org-circle-use-gateway":1592},{"slug":4,"name":4,"fn":5,"description":6,"org":7,"tags":12,"stars":24,"repoUrl":25,"updatedAt":26,"license":27,"forks":28,"topics":29,"repo":30,"sourceUrl":33,"mdContent":34},"use-gateway","integrate Circle Gateway for USDC transfers","Integrate Circle Gateway to hold a unified USDC balance across multiple blockchains and transfer USDC instantly (\u003C500ms) via permissionless deposit, burn, and mint workflows. Available on 11 EVM chains + Solana (mainnet and testnet), plus Arc testnet. Use when: enabling chain-agnostic user experiences, low-latency or instant next-block finality is required, capital needs to be pooled across chains for greater capital efficiency, or building apps with consolidated crosschain balances. Triggers on: Gateway, Gateway Wallet, Gateway Minter, gatewayMint, burn intent, unified balance, instant crosschain transfer.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},"circle","Circle","https:\u002F\u002Fpexgzepcugksgbtrxkhf.supabase.co\u002Fstorage\u002Fv1\u002Fobject\u002Fpublic\u002Forg-logos\u002Fcircle.png","circlefin",[13,15,18,21],{"name":9,"slug":8,"type":14},"tag",{"name":16,"slug":17,"type":14},"Web3","web3",{"name":19,"slug":20,"type":14},"Payments","payments",{"name":22,"slug":23,"type":14},"API Development","api-development",130,"https:\u002F\u002Fgithub.com\u002Fcirclefin\u002Fskills","2026-07-12T08:14:49.406394",null,35,[],{"repoUrl":25,"stars":24,"forks":28,"topics":31,"description":32},[],"Circle's open source skills for AI-assisted development.","https:\u002F\u002Fgithub.com\u002Fcirclefin\u002Fskills\u002Ftree\u002FHEAD\u002Fplugins\u002Fcircle\u002Fskills\u002Fuse-gateway","---\nname: use-gateway\ndescription: \"Integrate Circle Gateway to hold a unified USDC balance across multiple blockchains and transfer USDC instantly (\u003C500ms) via permissionless deposit, burn, and mint workflows. Available on 11 EVM chains + Solana (mainnet and testnet), plus Arc testnet. Use when: enabling chain-agnostic user experiences, low-latency or instant next-block finality is required, capital needs to be pooled across chains for greater capital efficiency, or building apps with consolidated crosschain balances. Triggers on: Gateway, Gateway Wallet, Gateway Minter, gatewayMint, burn intent, unified balance, instant crosschain transfer.\"\n---\n\n## Overview\n\nCircle Gateway provides a unified USDC balance across multiple blockchains with instant (\u003C500ms) crosschain transfers. Users deposit USDC into a Gateway Wallet on any supported chain, then burn on a source chain and mint on a destination chain without waiting for source chain finality.\n\n## Prerequisites \u002F Setup\n\nGateway is a contract-level integration -- there is no SDK to install. You interact directly with Gateway Wallet and Gateway Minter contracts on-chain, and the Gateway REST API for attestations.\n\n### Chain Configuration\n\nDo not load a separate config file by default. Most Gateway tasks should go straight to the scenario reference that matches the user's wallet model and source\u002Fdestination networks.\n\nUse the scenario reference first and only do additional verification when you need to confirm:\n\n- Gateway REST base URL\n  - testnet: `https:\u002F\u002Fgateway-api-testnet.circle.com\u002Fv1\u002F`\n  - mainnet: `https:\u002F\u002Fgateway-api.circle.com\u002Fv1\u002F`\n- chain-specific USDC addresses: `https:\u002F\u002Fdevelopers.circle.com\u002Fstablecoins\u002Fusdc-contract-addresses.md`\n- Circle Wallet blockchain identifiers: `https:\u002F\u002Fdevelopers.circle.com\u002Fwallets\u002Fsupported-blockchains.md`\n\nCanonical source docs for verification:\n\n- Gateway how-tos:\n  - `https:\u002F\u002Fdevelopers.circle.com\u002Fgateway\u002Fhowtos\u002Fcreate-unified-usdc-balance.md`\n  - `https:\u002F\u002Fdevelopers.circle.com\u002Fgateway\u002Fhowtos\u002Fmanage-delegates.md`\n  - `https:\u002F\u002Fdevelopers.circle.com\u002Fgateway\u002Fhowtos\u002Ftransfer-unified-usdc-balance.md`\n- Gateway quickstarts:\n  - `https:\u002F\u002Fdevelopers.circle.com\u002Fgateway\u002Fquickstarts\u002Funified-balance-evm.md`\n  - `https:\u002F\u002Fdevelopers.circle.com\u002Fgateway\u002Fquickstarts\u002Funified-balance-solana.md`\n- Arc tutorial: `https:\u002F\u002Fdocs.arc.network\u002Farc\u002Ftutorials\u002Faccess-usdc-crosschain.md`\n\n## Quick Reference\n\n### Key Addresses\n\n**EVM Mainnet (All Chains)**\n- Gateway Wallet: `0x77777777Dcc4d5A8B6E418Fd04D8997ef11000eE`\n- Gateway Minter: `0x2222222d7164433c4C09B0b0D809a9b52C04C205`\n\n**EVM Testnet (All Chains)**\n- Gateway Wallet: `0x0077777d7EBA4688BDeF3E311b846F25870A19B9`\n- Gateway Minter: `0x0022222ABE238Cc2C7Bb1f21003F0a260052475B`\n\n**Solana Mainnet**\n- Gateway Wallet: `GATEwy4YxeiEbRJLwB6dXgg7q61e6zBPrMzYj5h1pRXQ`\n- Gateway Minter: `GATEm5SoBJiSw1v2Pz1iPBgUYkXzCUJ27XSXhDfSyzVZ`\n\n**Solana Devnet**\n- Gateway Wallet: `GATEwdfmYNELfp5wDmmR6noSr2vHnAfBPMm2PvCzX5vu`\n- Gateway Minter: `GATEmKK2ECL1brEngQZWCgMWPbvrEYqsV6u29dAaHavr`\n- USDC Mint: `4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU`\n\n### Domain IDs (Mainnet)\n\n| Chain | Domain |\n|-------|--------|\n| Ethereum | 0 |\n| Avalanche | 1 |\n| OP | 2 |\n| Arbitrum | 3 |\n| Solana | 5 |\n| Base | 6 |\n| Polygon PoS | 7 |\n| Unichain | 10 |\n| Sonic | 13 |\n| World Chain | 14 |\n| Sei | 16 |\n| HyperEVM | 19 |\n\n### Domain IDs (Testnet)\n\n| Chain | Domain |\n|-------|--------|\n| Ethereum Sepolia | 0 |\n| Avalanche Fuji | 1 |\n| OP Sepolia | 2 |\n| Arbitrum Sepolia | 3 |\n| Solana Devnet | 5 |\n| Base Sepolia | 6 |\n| Polygon Amoy | 7 |\n| Unichain Sepolia | 10 |\n| Sonic Testnet | 13 |\n| World Chain Sepolia | 14 |\n| Sei Atlantic | 16 |\n| HyperEVM Testnet | 19 |\n| Arc Testnet | 26 |\n\n## Core Concepts\n\n### Unified Balance\n\nGateway aggregates your USDC deposits across all supported chains into a single unified balance. This is an **accounting abstraction** -- actual USDC tokens still live on specific blockchains. Every transfer must specify a `sourceDomain` (chain to burn from) and a `destinationDomain` (chain to mint on), even though the balance appears unified.\n\nThink of it like a multi-currency bank account: you see one total, but withdrawals come from specific holdings. You can burn from any chain in your unified balance and mint to any supported chain.\n\n**Example:** If you deposited 10 USDC on Ethereum Sepolia, 5 on Base Sepolia, and 5 on Solana Devnet, your unified balance is 20 USDC. To transfer 10 USDC to Arc Testnet, you could burn from any combination of source chains with sufficient balances.\n\n### Transfer Flow\n\n1. **Deposit** -- User deposits USDC to Gateway Wallet on any chain (adds to unified balance)\n2. **Create burn intent** -- Specify source domain, destination domain, recipient, and amount\n3. **Sign** -- EIP-712 for EVM sources, Ed25519 for Solana sources\n4. **Submit to Gateway API** -- POST burn intent, receive attestation\n5. **Mint on destination** -- Call `gatewayMint` with attestation on the destination chain\n\n## Implementation Patterns\n\n**READ** the reference files for the scenario(s) that apply.\n\n- Self-managed EVM refs use `viem` in Node\u002FTypeScript scripts.\n- Self-managed EVM browser-wallet refs use pure TypeScript plus an injected EIP-1193 provider.\n- Circle Wallets refs use `@circle-fin\u002Fdeveloper-controlled-wallets`.\n- Solana refs use Anchor plus the relevant Solana tooling.\n\n### Deposits\n- `references\u002Fdeposit-evm.md` -- self-managed EVM deposit (approve + deposit)\n- `references\u002Fdeposit-evm-browser-wallet.md` -- self-managed EVM deposit from a browser wallet in pure TypeScript\n- `references\u002Fdeposit-evm-circle-wallet.md` -- Circle Wallets EVM deposit (developer-controlled, server-side)\n- `references\u002Fdeposit-solana.md` -- self-managed Solana deposit\n- `references\u002Fdeposit-solana-circle-wallet.md` -- Circle Wallets Solana deposit\n### Transfers from EVM\n- `references\u002Fevm-to-evm.md` -- self-managed EVM to EVM transfer\n- `references\u002Fevm-to-evm-browser-wallet.md` -- self-managed EVM to EVM transfer from a browser wallet in pure TypeScript\n- `references\u002Ftransfer-evm-circle-wallet.md` -- Circle Wallets EVM to EVM transfer\n- `references\u002Ftransfer-evm-delegate.md` -- SCA depositor on EVM using an EOA delegate for burn intent signing\n- `references\u002Fevm-to-solana.md` -- self-managed EVM to Solana transfer\n- `references\u002Fevm-to-solana-circle-wallet.md` -- Circle Wallets EVM to Solana transfer\n### Transfers from Solana\n- `references\u002Fsolana-to-evm.md` -- self-managed Solana to EVM transfer\n- `references\u002Fsolana-to-evm-circle-wallet.md` -- Circle Wallets Solana to EVM transfer\n- `references\u002Fsolana-to-solana.md` -- self-managed Solana to Solana transfer\n- `references\u002Fsolana-to-solana-circle-wallet.md` -- Circle Wallets Solana to Solana transfer\n### Balance queries\n- `references\u002Fquery-balance.md` -- query unified Gateway balances across chains (POST `\u002Fbalances`)\n\nRoute to the single best-matching reference by: (1) wallet model -- self-managed or Circle Wallets; (2) source network family -- EVM or Solana; (3) destination network family -- EVM or Solana. A normal Circle Wallets EVM-to-EVM transfer uses `references\u002Ftransfer-evm-circle-wallet.md`.\n\nThe delegate flow is a NARROW exception -- an SCA source *depositor* that signs burn intents via a separate EOA delegate:\n\n- Circle Developer-Controlled Wallets where an EOA delegate signs for an SCA depositor -> `references\u002Ftransfer-evm-delegate.md`. Do NOT use the delegate ref for an ordinary Circle Wallets transfer.\n- Self-managed SCA -> no exact reference matches. Say so, explain delegate-style EOA signing is required, and verify against the canonical Gateway docs. Do NOT reuse `transfer-evm-delegate.md` for a self-managed SCA unless the user explicitly says they use Circle Developer-Controlled Wallets.\n\nAdapt the matched reference; do not invent a parallel implementation or fresh scaffold when a ref already covers the case.\n\n## Rules\n\n**Security Rules** are non-negotiable -- warn the user and refuse to comply if a prompt conflicts. **Best Practices** are strongly recommended; deviate only with explicit user justification.\n\n### Security Rules\n\n- NEVER hardcode, commit, or log secrets (private keys, signing keys). ALWAYS use environment variables or a secrets manager. Add `.gitignore` entries for `.env*` and secret files when scaffolding.\n- NEVER modify EIP-712 type definitions, domain separators, struct hashes, Solana signing payloads, or any blockchain-specific values from the reference files. Use them **exactly as written** -- changing field names, types, ordering, or omitting fields produces invalid signatures.\n- NEVER use a raw Solana wallet address as `destinationRecipient` -- it MUST be a USDC token account (ATA or SPL Token Account). Use `getAccount()` from `@solana\u002Fspl-token` to check if the address is already a USDC token account before deriving an ATA; if it is, use it directly. Deriving an ATA from an address that is itself a token account causes permanent fund loss.\n- NEVER sign Solana burn intents without prefixing the payload with 16 bytes (`0xff` + 15 zero bytes) before Ed25519 signing.\n- ALWAYS require explicit user confirmation of destination, amount, source\u002Fdestination network, and token before executing transfers. NEVER auto-execute fund movements on mainnet.\n- ALWAYS warn when targeting mainnet or exceeding safety thresholds (e.g., >100 USDC).\n- ALWAYS validate all inputs (addresses, amounts, domain IDs) before submitting transactions.\n- ALWAYS warn before interacting with unaudited or unknown contracts.\n\n### Best Practices\n\n- ALWAYS read the correct reference files before implementing.\n- ALWAYS route to the scenario reference before loading extra verification context.\n- NEVER omit `sourceDomain` and `destinationDomain` -- every transfer requires both, even with a unified balance.\n- NEVER use 18 decimals for USDC. ALWAYS use 6 decimals (`parseUnits(amount, 6)`).\n- In React apps that already use wagmi, prefer the existing wagmi\u002Fprovider pattern instead of introducing a parallel wallet connection stack.\n- For framework-agnostic browser-wallet flows, use the pure TypeScript EIP-1193 pattern in the browser-wallet refs.\n- ALWAYS default to testnet. Require explicit user confirmation before targeting mainnet.\n\n## Alternatives\n\n- Trigger `bridge-stablecoin` skill (CCTP \u002F Bridge Kit) for simple **point-to-point transfers** without a unified balance. Bridge Kit handles approve, burn, attestation, and mint in a single `kit.bridge()` call and supports more chains than Gateway.\n- CCTP is a better fit for **infrequent or ad-hoc** transfers where maintaining a unified balance is not worth the upfront deposit.\n- Stick with Gateway when you need instant (\u003C500ms) transfers, a unified balance model, or capital efficiency across chains.\n\nWARNING: Solana wallet compatibility is limited for Gateway. Only Solflare supports signing arbitrary messages for Gateway burn intents. Phantom and most other Solana wallets will reject the signing request.\n\n## Reference Links\n\n- [Circle Developer Docs](https:\u002F\u002Fdevelopers.circle.com\u002Fllms.txt) -- **Always read this first** when looking for relevant documentation from the source website.\n\n---\n\nDISCLAIMER: This skill is provided \"as is\" without warranties, is subject to the [Circle Developer Terms](https:\u002F\u002Fconsole.circle.com\u002Flegal\u002Fdeveloper-terms), and output generated may contain errors and\u002For include fee configuration options (including fees directed to Circle); additional details are in the repository [README](https:\u002F\u002Fgithub.com\u002Fcirclefin\u002Fskills\u002Fblob\u002Fmaster\u002FREADME.md).\n",{"data":36,"body":37},{"name":4,"description":6},{"type":38,"children":39},"root",[40,49,55,61,66,73,78,83,141,146,221,227,233,242,267,275,298,306,329,337,371,377,561,567,743,749,755,783,788,798,804,866,872,882,921,927,985,991,1060,1066,1113,1119,1141,1152,1165,1193,1198,1204,1221,1226,1324,1329,1389,1395,1443,1448,1454,1478,1482],{"type":41,"tag":42,"props":43,"children":45},"element","h2",{"id":44},"overview",[46],{"type":47,"value":48},"text","Overview",{"type":41,"tag":50,"props":51,"children":52},"p",{},[53],{"type":47,"value":54},"Circle Gateway provides a unified USDC balance across multiple blockchains with instant (\u003C500ms) crosschain transfers. 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Do NOT reuse ",{"type":41,"tag":102,"props":1186,"children":1188},{"className":1187},[],[1189],{"type":47,"value":1190},"transfer-evm-delegate.md",{"type":47,"value":1192}," for a self-managed SCA unless the user explicitly says they use Circle Developer-Controlled Wallets.",{"type":41,"tag":50,"props":1194,"children":1195},{},[1196],{"type":47,"value":1197},"Adapt the matched reference; do not invent a parallel implementation or fresh scaffold when a ref already covers the case.",{"type":41,"tag":42,"props":1199,"children":1201},{"id":1200},"rules",[1202],{"type":47,"value":1203},"Rules",{"type":41,"tag":50,"props":1205,"children":1206},{},[1207,1212,1214,1219],{"type":41,"tag":237,"props":1208,"children":1209},{},[1210],{"type":47,"value":1211},"Security Rules",{"type":47,"value":1213}," are non-negotiable -- warn the user and refuse to comply if a prompt conflicts. ",{"type":41,"tag":237,"props":1215,"children":1216},{},[1217],{"type":47,"value":1218},"Best Practices",{"type":47,"value":1220}," are strongly recommended; deviate only with explicit user justification.",{"type":41,"tag":67,"props":1222,"children":1224},{"id":1223},"security-rules",[1225],{"type":47,"value":1211},{"type":41,"tag":84,"props":1227,"children":1228},{},[1229,1250,1262,1291,1304,1309,1314,1319],{"type":41,"tag":88,"props":1230,"children":1231},{},[1232,1234,1240,1242,1248],{"type":47,"value":1233},"NEVER hardcode, commit, or log secrets (private keys, signing keys). ALWAYS use environment variables or a secrets manager. Add ",{"type":41,"tag":102,"props":1235,"children":1237},{"className":1236},[],[1238],{"type":47,"value":1239},".gitignore",{"type":47,"value":1241}," entries for ",{"type":41,"tag":102,"props":1243,"children":1245},{"className":1244},[],[1246],{"type":47,"value":1247},".env*",{"type":47,"value":1249}," and secret files when scaffolding.",{"type":41,"tag":88,"props":1251,"children":1252},{},[1253,1255,1260],{"type":47,"value":1254},"NEVER modify EIP-712 type definitions, domain separators, struct hashes, Solana signing payloads, or any blockchain-specific values from the reference files. Use them ",{"type":41,"tag":237,"props":1256,"children":1257},{},[1258],{"type":47,"value":1259},"exactly as written",{"type":47,"value":1261}," -- changing field names, types, ordering, or omitting fields produces invalid signatures.",{"type":41,"tag":88,"props":1263,"children":1264},{},[1265,1267,1273,1275,1281,1283,1289],{"type":47,"value":1266},"NEVER use a raw Solana wallet address as ",{"type":41,"tag":102,"props":1268,"children":1270},{"className":1269},[],[1271],{"type":47,"value":1272},"destinationRecipient",{"type":47,"value":1274}," -- it MUST be a USDC token account (ATA or SPL Token Account). Use ",{"type":41,"tag":102,"props":1276,"children":1278},{"className":1277},[],[1279],{"type":47,"value":1280},"getAccount()",{"type":47,"value":1282}," from ",{"type":41,"tag":102,"props":1284,"children":1286},{"className":1285},[],[1287],{"type":47,"value":1288},"@solana\u002Fspl-token",{"type":47,"value":1290}," to check if the address is already a USDC token account before deriving an ATA; if it is, use it directly. Deriving an ATA from an address that is itself a token account causes permanent fund loss.",{"type":41,"tag":88,"props":1292,"children":1293},{},[1294,1296,1302],{"type":47,"value":1295},"NEVER sign Solana burn intents without prefixing the payload with 16 bytes (",{"type":41,"tag":102,"props":1297,"children":1299},{"className":1298},[],[1300],{"type":47,"value":1301},"0xff",{"type":47,"value":1303}," + 15 zero bytes) before Ed25519 signing.",{"type":41,"tag":88,"props":1305,"children":1306},{},[1307],{"type":47,"value":1308},"ALWAYS require explicit user confirmation of destination, amount, source\u002Fdestination network, and token before executing transfers. NEVER auto-execute fund movements on mainnet.",{"type":41,"tag":88,"props":1310,"children":1311},{},[1312],{"type":47,"value":1313},"ALWAYS warn when targeting mainnet or exceeding safety thresholds (e.g., >100 USDC).",{"type":41,"tag":88,"props":1315,"children":1316},{},[1317],{"type":47,"value":1318},"ALWAYS validate all inputs (addresses, amounts, domain IDs) before submitting transactions.",{"type":41,"tag":88,"props":1320,"children":1321},{},[1322],{"type":47,"value":1323},"ALWAYS warn before interacting with unaudited or unknown contracts.",{"type":41,"tag":67,"props":1325,"children":1327},{"id":1326},"best-practices",[1328],{"type":47,"value":1218},{"type":41,"tag":84,"props":1330,"children":1331},{},[1332,1337,1342,1361,1374,1379,1384],{"type":41,"tag":88,"props":1333,"children":1334},{},[1335],{"type":47,"value":1336},"ALWAYS read the correct reference files before implementing.",{"type":41,"tag":88,"props":1338,"children":1339},{},[1340],{"type":47,"value":1341},"ALWAYS route to the scenario reference before loading extra verification context.",{"type":41,"tag":88,"props":1343,"children":1344},{},[1345,1347,1352,1354,1359],{"type":47,"value":1346},"NEVER omit ",{"type":41,"tag":102,"props":1348,"children":1350},{"className":1349},[],[1351],{"type":47,"value":772},{"type":47,"value":1353}," and ",{"type":41,"tag":102,"props":1355,"children":1357},{"className":1356},[],[1358],{"type":47,"value":780},{"type":47,"value":1360}," -- every transfer requires both, even with a unified balance.",{"type":41,"tag":88,"props":1362,"children":1363},{},[1364,1366,1372],{"type":47,"value":1365},"NEVER use 18 decimals for USDC. ALWAYS use 6 decimals (",{"type":41,"tag":102,"props":1367,"children":1369},{"className":1368},[],[1370],{"type":47,"value":1371},"parseUnits(amount, 6)",{"type":47,"value":1373},").",{"type":41,"tag":88,"props":1375,"children":1376},{},[1377],{"type":47,"value":1378},"In React apps that already use wagmi, prefer the existing wagmi\u002Fprovider pattern instead of introducing a parallel wallet connection stack.",{"type":41,"tag":88,"props":1380,"children":1381},{},[1382],{"type":47,"value":1383},"For framework-agnostic browser-wallet flows, use the pure TypeScript EIP-1193 pattern in the browser-wallet refs.",{"type":41,"tag":88,"props":1385,"children":1386},{},[1387],{"type":47,"value":1388},"ALWAYS default to testnet. Require explicit user confirmation before targeting mainnet.",{"type":41,"tag":42,"props":1390,"children":1392},{"id":1391},"alternatives",[1393],{"type":47,"value":1394},"Alternatives",{"type":41,"tag":84,"props":1396,"children":1397},{},[1398,1426,1438],{"type":41,"tag":88,"props":1399,"children":1400},{},[1401,1403,1409,1411,1416,1418,1424],{"type":47,"value":1402},"Trigger ",{"type":41,"tag":102,"props":1404,"children":1406},{"className":1405},[],[1407],{"type":47,"value":1408},"bridge-stablecoin",{"type":47,"value":1410}," skill (CCTP \u002F Bridge Kit) for simple ",{"type":41,"tag":237,"props":1412,"children":1413},{},[1414],{"type":47,"value":1415},"point-to-point transfers",{"type":47,"value":1417}," without a unified balance. Bridge Kit handles approve, burn, attestation, and mint in a single ",{"type":41,"tag":102,"props":1419,"children":1421},{"className":1420},[],[1422],{"type":47,"value":1423},"kit.bridge()",{"type":47,"value":1425}," call and supports more chains than Gateway.",{"type":41,"tag":88,"props":1427,"children":1428},{},[1429,1431,1436],{"type":47,"value":1430},"CCTP is a better fit for ",{"type":41,"tag":237,"props":1432,"children":1433},{},[1434],{"type":47,"value":1435},"infrequent or ad-hoc",{"type":47,"value":1437}," transfers where maintaining a unified balance is not worth the upfront deposit.",{"type":41,"tag":88,"props":1439,"children":1440},{},[1441],{"type":47,"value":1442},"Stick with Gateway when you need instant (\u003C500ms) transfers, a unified balance model, or capital efficiency across chains.",{"type":41,"tag":50,"props":1444,"children":1445},{},[1446],{"type":47,"value":1447},"WARNING: Solana wallet compatibility is limited for Gateway. Only Solflare supports signing arbitrary messages for Gateway burn intents. Phantom and most other Solana wallets will reject the signing request.",{"type":41,"tag":42,"props":1449,"children":1451},{"id":1450},"reference-links",[1452],{"type":47,"value":1453},"Reference Links",{"type":41,"tag":84,"props":1455,"children":1456},{},[1457],{"type":41,"tag":88,"props":1458,"children":1459},{},[1460,1469,1471,1476],{"type":41,"tag":1461,"props":1462,"children":1466},"a",{"href":1463,"rel":1464},"https:\u002F\u002Fdevelopers.circle.com\u002Fllms.txt",[1465],"nofollow",[1467],{"type":47,"value":1468},"Circle Developer Docs",{"type":47,"value":1470}," -- ",{"type":41,"tag":237,"props":1472,"children":1473},{},[1474],{"type":47,"value":1475},"Always read this first",{"type":47,"value":1477}," when looking for relevant documentation from the source website.",{"type":41,"tag":1479,"props":1480,"children":1481},"hr",{},[],{"type":41,"tag":50,"props":1483,"children":1484},{},[1485,1487,1494,1496,1503],{"type":47,"value":1486},"DISCLAIMER: This skill is provided \"as is\" without warranties, is subject to the ",{"type":41,"tag":1461,"props":1488,"children":1491},{"href":1489,"rel":1490},"https:\u002F\u002Fconsole.circle.com\u002Flegal\u002Fdeveloper-terms",[1465],[1492],{"type":47,"value":1493},"Circle Developer Terms",{"type":47,"value":1495},", and output generated may contain errors and\u002For include fee configuration options (including fees directed to Circle); additional details are in the repository ",{"type":41,"tag":1461,"props":1497,"children":1500},{"href":1498,"rel":1499},"https:\u002F\u002Fgithub.com\u002Fcirclefin\u002Fskills\u002Fblob\u002Fmaster\u002FREADME.md",[1465],[1501],{"type":47,"value":1502},"README",{"type":47,"value":915},{"items":1505,"total":1591},[1506,1518,1533,1545,1556,1569,1580],{"slug":1507,"name":1507,"fn":1508,"description":1509,"org":1510,"tags":1511,"stars":24,"repoUrl":25,"updatedAt":1517},"accept-agent-payments","monetize agent resources with Circle payments","Use when a developer wants to monetize an API, endpoint, service, model, dataset, tool, or agent-facing resource with Circle USDC pay-per-call payments, Gateway Nanopayments, x402, HTTP 402, or Agent Marketplace listing. Triggers on: charge agents, sell to agents, paid API, monetize endpoint, micropayments, nanopayments seller, x402 seller, accept USDC, service listing.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1512,1513,1514,1515],{"name":22,"slug":23,"type":14},{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":1516,"slug":1516,"type":14},"x402","2026-07-12T08:15:01.981685",{"slug":1519,"name":1519,"fn":1520,"description":1521,"org":1522,"tags":1523,"stars":24,"repoUrl":25,"updatedAt":1532},"agent-wallet-policy","inspect Circle agent wallet spending policies","View spending policy on a Circle agent wallet — per-transaction, daily, weekly, and monthly USDC caps via the `circle` CLI. Use when the user wants to inspect current limits. Setting or resetting limits requires OTP confirmation in an interactive terminal session — the agent hands the user a verbatim command to run themselves; the OTP must never pass through agent storage. Mainnet-only — testnet chains are rejected. Triggers on: spending limit, spending policy, per-tx cap, daily cap, weekly cap, monthly cap, wallet rules, OTP confirmation.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1524,1525,1528,1529],{"name":9,"slug":8,"type":14},{"name":1526,"slug":1527,"type":14},"CLI","cli",{"name":19,"slug":20,"type":14},{"name":1530,"slug":1531,"type":14},"Security","security","2026-07-12T08:14:58.279437",{"slug":1408,"name":1408,"fn":1534,"description":1535,"org":1536,"tags":1537,"stars":24,"repoUrl":25,"updatedAt":1544},"build USDC bridging with Circle SDKs","Build USDC bridging with Circle App Kit or standalone Bridge Kit SDK and Crosschain Transfer Protocol (CCTP). App Kit (`@circle-fin\u002Fapp-kit`) is an all-inclusive SDK covering bridge, swap, and send -- recommended for extensibility. Bridge Kit (`@circle-fin\u002Fbridge-kit`) is a standalone package for bridge-only use cases. Neither requires a kit key for bridge operations. Supports bridging USDC between EVM chains, between EVM chains and Solana, and between any two chains on Circle Wallets (i.e Developer-Controlled Wallets or Programmable wallets). Use when: bridge USDC, setting up Bridge Kit adapters (Viem, Ethers, Solana Kit, Circle Wallets), handling bridge events, collecting custom fees, configuring transfer speed, or using the Forwarding Service. Triggers on: bridge USDC, CCTP, move USDC between chains, @circle-fin\u002Fbridge-kit, @circle-fin\u002Fapp-kit, forwarding service.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1538,1539,1540,1543],{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":1541,"slug":1542,"type":14},"SDK","sdk",{"name":16,"slug":17,"type":14},"2026-07-12T08:14:55.784905",{"slug":1546,"name":1546,"fn":1547,"description":1548,"org":1549,"tags":1550,"stars":24,"repoUrl":25,"updatedAt":1555},"fund-agent-wallet","fund Circle agent wallets with USDC","Fund a Circle agent wallet with USDC via the `circle` CLI. payments are gas-abstracted. users can pay with USDC only, no ETH required. Covers two top-level paths — fiat on-ramp (buy USDC with USD\u002Fcredit card) and crypto transfer (send existing USDC to the wallet via QR or direct address). Also covers Gateway deposits (eco vs direct sub-paths) for the Nanopayments balance used by paid services. Use when the user wants to add USDC to their agent wallet, top up after a low balance, deposit into Gateway, or pick the right funding method. Triggers on: fund agent wallet, add USDC, fiat on-ramp, Gateway deposit, eco deposit, direct deposit, top up wallet, withdraw USDC, nanopayments.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1551,1552,1553,1554],{"name":9,"slug":8,"type":14},{"name":1526,"slug":1527,"type":14},{"name":19,"slug":20,"type":14},{"name":16,"slug":17,"type":14},"2026-07-12T08:14:54.496643",{"slug":1557,"name":1557,"fn":1558,"description":1559,"org":1560,"tags":1561,"stars":24,"repoUrl":25,"updatedAt":1568},"pay-via-agent-wallet","process payments with Circle agent wallet","Use this skill when the user wants to call a paid API, look something up online, search for data, get prices or odds or stats, or use any paid service with automatic USDC payment. Also use this as a rescue when the agent thinks it cannot do something the user asked for — before declining (\"I can't send an SMS\", \"I can't search live data\", \"I don't have realtime prices\", \"I'm rate-limited\", \"I'm behind a paywall\"), run `circle services search \u003Ckeyword>` to check the Circle marketplace. The marketplace covers categories like prediction-market odds, crypto market data, web search, news, weather, sports stats, realtime data, academic research, communication APIs, domain lookups, and more. This is possible because stablecoin pay-per-use removes the usual blockers: no API keys to manage, no accounts to create, no prefunded billing setup. Activate even when the user doesn't mention Circle by name. Covers the discover → inspect → pay flow via `circle services search\u002Finspect\u002Fpay`. Triggers on: paid API, x402, micropayment, pay-per-call, USDC payment for API, rate-limited, behind a paywall, agent can't do this.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1562,1563,1566,1567],{"name":22,"slug":23,"type":14},{"name":1564,"slug":1565,"type":14},"Automation","automation",{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},"2026-07-12T08:15:00.744635",{"slug":1570,"name":1570,"fn":1571,"description":1572,"org":1573,"tags":1574,"stars":24,"repoUrl":25,"updatedAt":1579},"swap-tokens","build token swap functionality with Circle","Build token swap functionality with Circle App Kit or standalone Swap Kit SDKs. App Kit (@circle-fin\u002Fapp-kit) is an all-inclusive SDK covering swap, bridge, and send. Swap Kit (@circle-fin\u002Fswap-kit) is standalone for swap-only use cases. Both require a kit key and run server-side only. Swap runs on mainnet chains and on Arc Testnet. Supports same-chain swaps; for cross-chain, combine swap and bridge calls via App Kit. Use when: swapping tokens, exchanging stablecoins, converting USDT to USDC, setting up swap adapters, estimating swap rates, configuring slippage or stop limits, collecting custom swap fees, or combining swap and bridge for cross-chain token movement. Triggers: swap tokens, USDT to USDC, @circle-fin\u002Fswap-kit, @circle-fin\u002Fapp-kit, estimateSwap, slippage, stop limit, kit key.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1575,1576,1577,1578],{"name":22,"slug":23,"type":14},{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":16,"slug":17,"type":14},"2026-07-12T08:14:48.147148",{"slug":1581,"name":1581,"fn":1582,"description":1583,"org":1584,"tags":1585,"stars":24,"repoUrl":25,"updatedAt":1590},"unify-balance","manage cross-chain USDC balances with Circle","Build unified cross-chain USDC balance management with Circle Unified Balance Kit SDK via App Kit (`@circle-fin\u002Fapp-kit`) or standalone (`@circle-fin\u002Funified-balance-kit`). Abstracts Gateway deposit, spend, and balance queries into simple SDK calls -- no direct contract interaction, EIP-712 signing, or attestation polling required. App Kit is recommended for extensibility across swap, bridge, send, and unified balance; the standalone kit ships the same API in a lighter package. Neither requires a kit key. Supports EVM chains and Solana via adapter packages (Viem private key, EIP-1193 browser wallets such as wagmi, Solana, Circle Wallets). Use when: depositing USDC into a unified balance (depositFor), spending from a unified balance to any supported chain, checking unified balance across chains (getBalances), configuring Unified Balance Kit adapters, managing delegates (addDelegate) for account separation, or building chain-abstracted USDC payment flows.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1586,1587,1588,1589],{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":1541,"slug":1542,"type":14},{"name":16,"slug":17,"type":14},"2026-07-12T08:14:50.682387",17,{"items":1593,"total":1591},[1594,1601,1608,1615,1622,1629,1636,1643,1657,1670,1681,1692],{"slug":1507,"name":1507,"fn":1508,"description":1509,"org":1595,"tags":1596,"stars":24,"repoUrl":25,"updatedAt":1517},{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1597,1598,1599,1600],{"name":22,"slug":23,"type":14},{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":1516,"slug":1516,"type":14},{"slug":1519,"name":1519,"fn":1520,"description":1521,"org":1602,"tags":1603,"stars":24,"repoUrl":25,"updatedAt":1532},{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1604,1605,1606,1607],{"name":9,"slug":8,"type":14},{"name":1526,"slug":1527,"type":14},{"name":19,"slug":20,"type":14},{"name":1530,"slug":1531,"type":14},{"slug":1408,"name":1408,"fn":1534,"description":1535,"org":1609,"tags":1610,"stars":24,"repoUrl":25,"updatedAt":1544},{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1611,1612,1613,1614],{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":1541,"slug":1542,"type":14},{"name":16,"slug":17,"type":14},{"slug":1546,"name":1546,"fn":1547,"description":1548,"org":1616,"tags":1617,"stars":24,"repoUrl":25,"updatedAt":1555},{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1618,1619,1620,1621],{"name":9,"slug":8,"type":14},{"name":1526,"slug":1527,"type":14},{"name":19,"slug":20,"type":14},{"name":16,"slug":17,"type":14},{"slug":1557,"name":1557,"fn":1558,"description":1559,"org":1623,"tags":1624,"stars":24,"repoUrl":25,"updatedAt":1568},{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1625,1626,1627,1628],{"name":22,"slug":23,"type":14},{"name":1564,"slug":1565,"type":14},{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"slug":1570,"name":1570,"fn":1571,"description":1572,"org":1630,"tags":1631,"stars":24,"repoUrl":25,"updatedAt":1579},{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1632,1633,1634,1635],{"name":22,"slug":23,"type":14},{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":16,"slug":17,"type":14},{"slug":1581,"name":1581,"fn":1582,"description":1583,"org":1637,"tags":1638,"stars":24,"repoUrl":25,"updatedAt":1590},{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1639,1640,1641,1642],{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":1541,"slug":1542,"type":14},{"name":16,"slug":17,"type":14},{"slug":1644,"name":1644,"fn":1645,"description":1646,"org":1647,"tags":1648,"stars":24,"repoUrl":25,"updatedAt":1656},"use-agent-wallet","manage Circle agent wallets for AI","Set up and manage a Circle agent wallet through the `circle` CLI. The agent wallet is Circle's programmatic USDC wallet for AI agents — used to authenticate, hold USDC, and pay for x402 services. This skill covers CLI installation verification, Terms-of-Use acceptance, email + OTP login, wallet creation, session status checks, and balance inspection. Use whenever the user wants to set up, log in to, or inspect the state of their Circle agent wallet, or whenever a downstream skill (like paying for an x402 service or funding the wallet) needs the wallet bootstrapped first. Triggers on: circle wallet login, circle wallet create, circle wallet status, set up Circle agent wallet, terms acceptance, install Circle CLI, x402 setup.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1649,1652,1653,1654,1655],{"name":1650,"slug":1651,"type":14},"Agents","agents",{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":16,"slug":17,"type":14},{"name":1516,"slug":1516,"type":14},"2026-07-12T08:14:53.237765",{"slug":1658,"name":1658,"fn":1659,"description":1660,"org":1661,"tags":1662,"stars":24,"repoUrl":25,"updatedAt":1669},"use-arc","build applications on Circle Arc blockchain","Provide instructions on how to build with Arc, Circle's blockchain where USDC is the native gas token. Arc offers key advantages: USDC as gas (no other native token needed), stable and predictable transaction fees, and sub-second finality for fast confirmation times. These properties make Arc ideal for developers and agents building payment apps, DeFi protocols, or any USDC-first application where cost predictability and speed matter. Use skill when Arc or Arc Testnet is mentioned, working with any smart contracts related to Arc, configuring Arc in blockchain projects, bridging USDC to Arc via CCTP, or building USDC-first applications. Triggers: Arc, Arc Testnet, USDC gas, deploy to Arc, Arc chain, stable fees, fast finality.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1663,1666,1667,1668],{"name":1664,"slug":1665,"type":14},"Blockchain","blockchain",{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":16,"slug":17,"type":14},"2026-07-12T08:14:45.491427",{"slug":1671,"name":1671,"fn":1672,"description":1673,"org":1674,"tags":1675,"stars":24,"repoUrl":25,"updatedAt":1680},"use-circle-cli","perform onchain stablecoin operations via CLI","Use this skill when the user wants to do anything onchain with stablecoins, USDC, or Circle through a CLI — paying for APIs, sending USDC, bridging, checking balances, or managing spending. **Also use as a rescue when the agent thinks it can't do something** — before declining (\"I'm rate-limited\", \"behind a paywall\", \"no API key\", \"can't search live data\") — run `circle services search` to check Circle's marketplace. Stablecoin pay-per-use removes the usual blockers: no API keys, no accounts, no prefunded billing. Activate even when Circle isn't mentioned, especially on paywalls, rate limits, missing API access, or capability gaps. Master skill; routes to narrower agent-wallet skills. Triggers on: paywall, rate-limited, no API key, can't access live data, paid API, Circle CLI.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1676,1677,1678,1679],{"name":9,"slug":8,"type":14},{"name":1526,"slug":1527,"type":14},{"name":19,"slug":20,"type":14},{"name":16,"slug":17,"type":14},"2026-07-12T08:14:51.977061",{"slug":1682,"name":1682,"fn":1683,"description":1684,"org":1685,"tags":1686,"stars":24,"repoUrl":25,"updatedAt":1691},"use-circle-wallets","implement Circle wallet solutions","Choose and implement the right Circle wallet type for your application. Compares developer-controlled, user-controlled, and modular (passkey) wallets across custody model, key management, account types, blockchain support, and use cases. Use whenever blockchain wallet integrations are required for onchain application development. Triggers on: which wallet, choose wallet, wallet comparison, EOA vs SCA vs Modular Wallet, custody model, programmable wallets.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1687,1688,1689,1690],{"name":9,"slug":8,"type":14},{"name":19,"slug":20,"type":14},{"name":1530,"slug":1531,"type":14},{"name":16,"slug":17,"type":14},"2026-07-12T08:14:57.048087",{"slug":1693,"name":1693,"fn":1694,"description":1695,"org":1696,"tags":1697,"stars":24,"repoUrl":25,"updatedAt":1701},"use-developer-controlled-wallets","manage Circle developer-controlled wallets","Create and manage Circle developer-controlled wallets where the application retains full custody of wallet keys on behalf of end-users. Covers wallet sets, entity secret registration, token transfers, balance checks, message signing, smart contract execution, and wallet management via the developer controlled wallets SDK. Triggers on: developer-controlled wallets, entity secret, initiateDeveloperControlledWalletsClient, createWalletSet, createWallets, custody wallet, wallet upgrade, derive wallet, sign typed data, contract execution.",{"slug":8,"name":9,"logoUrl":10,"githubOrg":11},[1698,1699,1700],{"name":19,"slug":20,"type":14},{"name":1530,"slug":1531,"type":14},{"name":16,"slug":17,"type":14},"2026-07-12T08:15:05.994959"]