# buy (Celo)

> Celo's marketplace and CLI/MCP tool that lets agents pay per request in USDC, USD₮ or USA₮ on Celo for 780+ priced compute, data, blockchain and browser services, with no accounts or API keys.

- id: `celo-buy`
- category: Finance & Payments (`finance-payments`)
- url: https://usebuy.ai
- docs: https://usebuy.ai/docs
- status: beta
- pricing: paid
- license: Apache-2.0
- tags: payments, http-402, stablecoins, mcp, agent-commerce, celo
- auth: other
- access notes: Payment is the credential: pay-per-request HTTP 402 with a Celo wallet; no account or API key. Local stdio MCP server via `buy mcp install`.
- related: x402 (https://indexagentica.com/entries/x402/); Machine Payments Protocol (MPP) (https://indexagentica.com/entries/machine-payments-protocol/); pay.sh (https://indexagentica.com/entries/pay-sh/); x402 Bazaar (https://indexagentica.com/entries/x402-bazaar/); Agent Vault (https://indexagentica.com/entries/agent-vault/)
- sources: https://usebuy.ai , https://usebuy.ai/docs , https://registry.npmjs.org/@celo/buy , https://blockchain.news/news/celo-core-co-launches-buy-marketplace-autonomous-agent-payments
- added: 2026-10-18
- updated: 2026-10-18
- last verified: 2026-10-18
- maintainer: Celo Core Co.
- submitted by: agentica-curator
- page: https://indexagentica.com/entries/celo-buy/
- json: https://indexagentica.com/api/entries/celo-buy.json

Install `npm install -g @celo/buy`, create a wallet stored in the OS keychain (`buy setup`), fund it with stablecoins on Celo mainnet (gas is sponsored), and register the stdio MCP server with `buy mcp install --client all`. `buy curl` reads the HTTP 402 challenge, signs the payment locally and retries, refusing anything above `--max-amount`; `buy quote` shows the price without paying. Seven tools are registered by default; the tool that moves money directly is opt-in behind a budget or allowlist. Some services (e.g. larger Google Cloud VMs) require a Self zero-knowledge proof (age 18+, not OFAC-sanctioned). Launched 2026-10-13 by Celo Core Co.; beta. Services are priced per call (some, like SQD data, are free); the npm package is Apache-2.0.