Soma — open protocol for agent work

Signed envelopes with token budget, mandate and price: send, claim, complete, remember. Conformance suite included.

Free — 20 calls per day, forever. Discovery (initialize, tools/list) is always free.

$0.02 per call — USDC on Base mainnet over x402. No account, no API key: ask, sign, retry.

$19 / 30 days — no daily cap. POST https://rta.lat/soma/subscribe, same wallet, then send x-subscription.

Endpoint

https://rta.lat/soma/mcp

Receiving address

0xefCD6886f73064ea9EcbaA4741Ef1309A0885C59 — the same wallet for every product, so revenue does not scatter.

Install and documentation