MCP x402 Pay

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/cryptoapis-io-mcp-x402-pay

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools

1 read · 2 write · 0 delete

Secrets

None asked for

Install scripts

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Runs as

Node.js package

Tools (3)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• x402_discover

  Discover x402-gated APIs you can pay for — browse the facilitator's Bazaar catalogue of registered x402 resources, each with the price and payment terms it accepts. Use this BEFORE x402_pay whenever you need to FIND a paid endpoint rather than call one you were already given: the pay tool only fetches a URL you hand it, so this is the only way to locate a monetized API on your own. Returns { resources: [{ resource, type, x402Version, accepts: [{ scheme, network, amount, asset, payTo }], lastUpdated, metadata? }], pagination: { limit, offset, total } } — `amount` is in ATOMIC units (USDC 6-deci…

• x402_pay

  Fetch an HTTP resource and, if it returns 402 Payment Required, pay it automatically with x402 and return the paid response. On a 402 it: parses the merchant's price, authorizes via the CryptoAPIs buyer /authorize, signs the payment LOCALLY (non-custodial — the key never leaves this process), and retries with the X-PAYMENT header. Returns { status, paid, body, settlement? }. This is for HTTP URLs — to pay a paid MCP TOOL on another server, use x402_pay_tool instead. Supported today: EVM (eip712, e.g. Base USDC) and Solana. Tron, UTXO (bitcoin/ltc/doge/dash/bch/zcash), Kaspa and XRP are UPCOMIN…

• x402_pay_tool

  Call a TOOL on another MCP server and, if that tool requires payment, pay it automatically with x402 and return the paid result. This is the MCP-transport twin of x402_pay: use x402_pay for an HTTP url, and THIS for a paid tool on another MCP server. On a challenge it reads the PaymentRequired (from structuredContent, falling back to content[0].text), authorizes via the CryptoAPIs buyer /authorize, signs LOCALLY (non-custodial — the key never leaves this process), and retries the tool call once with the payment in _meta["x402/payment"] (a raw object, no base64 — MCP carries structured JSON nat…

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Forks

1

Open issues

1

Weekly downloads

65

Last commit

Sep 28, 2026 (1 month ago)

Last release

Sep 24, 2026 (1 month ago)

Last package publish

Sep 24, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Registry name

io.github.CryptoAPIs-io/mcp-x402-pay

Version

0.5.3

Auth

No auth

Packages

npm @cryptoapis-io/mcp-x402-pay

License

MIT

Repository

github.com/CryptoAPIs-io/cryptoapis-mcp-x402-pay

First seen

Oct 24, 2026

Last checked

Oct 25, 2026

Source

Official MCP Registrygithub-graphql