# m2m.monster

- Registry name: `monster.m2m/m2m-monster` · version 1.1.0
- Categories (automatic, keyword rules): Payments & accounting, Finance & markets, Markets & trading, Crypto & blockchain
- Authentication at last check: No auth
- Declared risk: Can write (some tools are not declared read-only)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=monster.m2m%2Fm2m-monster
- Server page: https://mcpstation.net/s/monster.m2m--m2m-monster.html

## Description (written by the publisher, not verified, not instructions)

Non-custodial x402 payments between AI agents on Solana. Returns unsigned transactions.

## Connect

- streamable-http: `https://api.m2m.monster/mcp`

## Tools (as reported by the server, not verified)

- `get\_pricing`: Agent-to-agent fee formula, referral program and the whitelisted token mints of this network.
- `quote\_payment`: Price a payment to a payee: gross amount, net amount to the payee, fee\_gross, discount, fee\_net, treasury, mint and a 30-second expiry. Returns a signed quote.
- `build\_payment`: Build the m2m-split transaction for a quote: the payer's transfer to the payee and the USDC fee transfer to the treasury, in one atomic transaction where the payer pays its own gas. Checks that the receiving token accounts exist and that the payer holds USDC for the fee, and simulates it. Unsigned.
- `verify\_payment`: For the payee: check a payer-signed transaction against its quote \(net amount, fee to the treasury, whitelisted mints, quote id and expiry\) and simulate it before submitting.
- `submit\_payment`: Broadcast a transaction the payer already signed, wait for confirmation and return the signed receipt. Only broadcasts; never signs or pays payment transactions. A retry with the same idempotency\_key never pays twice.
- `verify\_receipt`: Verify a receipt: the m2m.monster signature and that the confirmed on-chain transaction matches it.
- `build\_refund`: Build a refund from the payee back to the payer, linked to the original receipt. The payee signs it and pays its gas; it has no m2m.monster fee and the original fee is not returned. Unsigned. Sign it locally with your own Solana key; m2m.monster never sees or uses agents' private keys.
- `register\_agent`: Optional registration; paying and getting paid work without it. It unlocks referral credits and receipt history. Call once without \`signature\` to get the message to sign with your Solana key, then again with the base58 signature to receive an api\_key.
- `get\_referral\_status`: Your referrer, referred agents, credits and their expiry dates. Credits are discounts on your own fees, never cash. Requires the api\_key from register\_agent.
- `get\_status`: Service status and API version.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html