
Description
Agentic Services on Polygon — pay-per-call APIs gated by the x402 payment protocol, callable via the Polygon Agent CLI. No API keys or subscriptions; each call costs a small USDC amount drawn from the agent's smart wallet. Covers web search (Exa, SearchApi), web scraping (Firecrawl), news (NewsAPI), LLM inference (Llama 3.3/3.2 via NVIDIA NIM, OpenRouter), cloud browsers (Browserbase), email (Resend, AgentMail), on-chain wallet analytics and prices (Allium), and multi-chain JSON-RPC (QuickNode, 16 chains).
SKILL.md
Agentic Services (x402)
Pay-per-call APIs on the Agentic Services marketplace, gated by the x402 payment
protocol on Polygon mainnet. No API keys or subscriptions — each call costs a small
USDC amount drawn from your wallet. The CLI (x402-pay) detects the 402 response,
signs the exact payment, and retries automatically.
- Base URL:
https://agentic-services.polygon.technology - Live catalog (source of truth):
GET https://agentic-services.polygon.technology/api/discover/routes - Full provider docs:
https://agentic-services.polygon.technology/SKILL.md
Always read the live catalog first. It returns every active route with its exact proxy path, method, price, and
payToaddress (CORS enabled, no payment required to read it). Prices and available services change — treat the catalog as authoritative and this file as orientation.
Prerequisites — check before any x402 call
Every call spends USDC from a funded Polygon wallet. Before running x402-pay:
agent wallet list # is a wallet configured?
If no wallet is listed, set one up:
agent wallet login: opens the agentconnect login page in the browser; sign in with Google or email (works on headless hosts too, no extra flags needed). No setup step is needed first: keys are defaulted, and login auto-provisions Builder credentials.agent wallet address: get the address, then fund it (agent fund)agent balances: confirm USDC is available on Polygon (chain 137) before calling any x402 endpoint
If a wallet exists but balances shows 0 USDC, direct the user to fund it — x402-pay
will otherwise fail with an EOA funding error. All services settle in USDC on Polygon
(0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359, chain id 137).
How to call a service
Use the full route URL from the catalog. Request bodies and query params mirror the upstream provider's own API.
# POST with a JSON body (e.g. Exa web search)
agent x402-pay \
--url "https://agentic-services.polygon.technology/api/proxy/exa/search" \
--wallet main --method POST \
--body '{"query": "polygon agentic payments", "numResults": 5}'
# GET with query params (e.g. SearchApi Google search)
agent x402-pay \
--url "https://agentic-services.polygon.technology/api/proxy/searchapi/google?q=<query>" \
--wallet main --method GET
# Scrape a page to clean markdown (Firecrawl)
agent x402-pay \
--url "https://agentic-services.polygon.technology/api/proxy/firecrawl/scrape" \
--wallet main --method POST --body '{"url": "https://example.com"}'
# LLM inference (Llama 3.3 70B, OpenAI-compatible chat body)
agent x402-pay \
--url "https://agentic-services.polygon.technology/api/proxy/nim/llama-3.3-70b/chat" \
--wallet main --method POST \
--body '{"messages": [{"role": "user", "content": "Summarize Polygon in one line."}]}'
Chain and token are auto-detected from the 402 response — no manual config.
Catalog
Prices are per call, in USDC, settling on Polygon (chain 137). All routes below are
relative to the base URL https://agentic-services.polygon.technology.
Search, scraping & news (proxied)
| Service | Method | Route | Price |
|---|---|---|---|
| Exa — AI web search | POST | /api/proxy/exa/search | $0.001 |
| SearchApi — Google search | GET | /api/proxy/searchapi/google | $0.001 |
| Firecrawl — scrape to markdown | POST | /api/proxy/firecrawl/scrape | $0.002 |
| NewsAPI — top headlines | GET | /api/proxy/news/headlines | $0.001 |
AI inference (proxied)
| Service | Method | Route | Price |
|---|---|---|---|
| NVIDIA NIM — Llama 3.3 70B (chat) | POST | /api/proxy/nim/llama-3.3-70b/chat | $0.01 |
| NVIDIA NIM — Llama 3.2 90B Vision (image + chat) | POST | /api/proxy/nim/llama-3.2-vision/chat | $0.01 |
| OpenRouter — 200+ models (GPT, Claude, Gemini, Llama…) | POST | /api/proxy/openrouter/chat | $0.01 |
Web automation & email (proxied)
| Service | Method | Route | Price |
|---|---|---|---|
| Browserbase — cloud browser session | POST | /api/proxy/browserbase/sessions | $0.001 |
| Resend — send transactional email | POST | /api/proxy/resend/send | $0.005 |
On-chain data, email inboxes & RPC (external providers)
These are x402-native providers: you call their own endpoint URL directly (not a
/api/proxy/* path), still settling in USDC on Polygon. x402-pay handles the 402
exactly the same way. Pass the full URL below as --url.
QuickNode RPC — $0.001/call, POST standard JSON-RPC. URL pattern
https://x402.quicknode.com/<chain>/:
| Chain | <chain> slug | Chain | <chain> slug | |
|---|---|---|---|---|
| Polygon | matic-mainnet | Optimism | optimism-mainnet | |
| Polygon Amoy | matic-amoy | Avalanche | avalanche-mainnet | |
| Polygon zkEVM | zkevm-mainnet | BSC | bsc-mainnet | |
| Base | base-mainnet | Linea | linea-mainnet | |
| Ethereum | ethereum-mainnet | Scroll | scroll-mainnet | |
| Solana | solana-mainnet | Sui | sui-mainnet | |
| Arbitrum | arbitrum-mainnet | TON | ton-mainnet | |
| Bitcoin | btc-mainnet | Tron | tron-mainnet |
agent x402-pay \
--url "https://x402.quicknode.com/matic-mainnet/" \
--wallet main --method POST \
--body '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
Allium — on-chain wallet analytics — base https://agents.allium.so/api/v1/developer/:
| Endpoint | Method | Full URL | Price |
|---|---|---|---|
| Wallet balances | POST | …/wallet/balances | $0.03 |
| Wallet PnL | POST | …/wallet/pnl | $0.03 |
| Wallet transactions | POST | …/wallet/transactions | $0.03 |
| Wallet balances history | POST | …/wallet/balances/history | $0.01 |
| Prices (latest) | POST | …/prices | $0.02 |
| Prices at timestamp | POST | …/prices/at-timestamp | $0.02 |
| Prices history | POST | …/prices/history | $0.02 |
| Tokens list | GET | …/tokens | $0.03 |
| Tokens search | GET | …/tokens/search | $0.03 |
AgentMail — email inbox for the agent — $2/call, base https://x402.api.agentmail.to/v0/inboxes:
| Endpoint | Method | Full URL |
|---|---|---|
| Create inbox | POST | https://x402.api.agentmail.to/v0/inboxes |
| List messages | GET | …/{inbox_id}/messages |
| Get message | GET | …/{inbox_id}/messages/{message_id} |
| Send message | POST | …/{inbox_id}/messages/send |
| Reply message | POST | …/{inbox_id}/messages/{message_id}/reply |
| List threads | GET | …/{inbox_id}/threads |
How x402 works
- CLI sends the request to the endpoint.
- Endpoint responds with
HTTP 402 Payment Required+ payment details (price, asset, network,payTo). - CLI signs an EIP-3009
transferWithAuthorizationfor the exact amount from the wallet. - CLI retries the request with the payment header.
- Endpoint verifies, calls the upstream API, returns the response; the settlement tx hash comes back in the
PAYMENT-RESPONSEheader.
The whole flow is transparent to the agent. Chain and token are auto-detected from the
402 response. Do not guess endpoints or search the web for providers — read the live
catalog (/api/discover/routes) for the correct, current URLs and prices.