Zambo

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freemium • Free

Updated Sep 2026

Zambo gives AI agents real hands and then proves they used them. It runs as a zero-auth MCP server at https://zambo.dev/api/mcp, exposing 100+ live tools — crypto prices, site audits, web search, data lookups — through a single endpoint, so an agent gains execution capability without an account, an API key or a per-provider integration. The part most agent tooling skips is what happens after the call: Zambo returns a verifiable execution receipt for every request, so when your agent claims a task is done you can audit the claim instead of taking the transcript's word for it. That turns 'the model said it posted, paid and checked' into something you can verify after the fact, which is exactly the failure mode killing trust in autonomous workflows. Paid endpoints use the x402 v2 standard — a $1.49 USDC Day Pass on Base — which means an agent can pay for its own access without a human pulling out a card or a stored credential. The free tier needs no account and gives 20 calls per tool per day, enough to wire Zambo into a coding agent and see whether receipts change how you review its work. Zambo won Week 19 of The Capital, our weekly community-voted AI tools leaderboard. The limits are honest: a daily call cap on the free tier, a crypto-only paid path that won't fit every stack, and a solo-built product where the breadth of the 100+ tool catalogue matters more than any single tool's depth.