Free AI Agent Tools With No Signup: What 20 Free Calls a Day Actually Finishes
Most "free" AI tools want an account, a card, or both before they do anything. There is a shorter path: a tool layer that runs real calls with no signup at all, and tells you exactly what the free allowance buys. Here is
Most "free" AI tools want an account, a card, or both before they do anything. There is a shorter path: a tool layer that runs real calls with no signup at all, and tells you exactly what the free allowance buys. Here is how it works on Zambo, with receipts from real jobs run on October 23, 2026.
The two no-account doors
- Browser: open https://zambo.dev/chat and describe the job. No account, no key.
- MCP endpoint: point any MCP client at https://zambo.dev/mcp. The default surface lists 35 tools; the full catalog is 153.
The free tier is 20 free calls per day. One count for the day, resetting at UTC midnight. When the calls are used up, the next call does not run and quietly fail: it returns a prompt for the $0.99 Day Pass (24 hours, limits lifted) instead. Paying is optional and nothing about the free path asks for a card.
What 20 calls actually finish
Count finished jobs, not calls. In one short free session with no account, four real jobs finished: a live BTC price check with a receipt, a full website audit scored 42 of 100 with findings sorted by severity, a business idea scored 49 of 100 with its bottleneck named, and a two-step job (live ETH price plus a scored repair idea) bundled into one handover link a client can open and check. Receipts from that session:
- https://zambo.dev/run/01107363-1a09-408d-966f-62048531fb3d
- https://zambo.dev/run/10abdaa6-b09c-4fc1-ab6d-ddf7a6fc6c27
- https://zambo.dev/run/35f98b47-da38-42ef-ad86-f1e88e9a948f
Every call that runs leaves a verifiable receipt at a public link like those: the tool, the time, and the saved result, checkable free at https://zambo.dev/verify/. The receipt proves the saved result was not changed since it was saved.
The honest limits
Twenty calls a day is a working allowance, not an unlimited tier. Long multi-step jobs eat calls quickly, and heavy tools are the ones you will want the Day Pass for. The point of the free tier is not to run your whole operation; it is to finish real jobs today, with proof, before you decide whether a dollar day pass earns its keep.
The canonical page, with the full question set (free MCP tools without signup, free API calls without a credit card, how to try agent tools without creating an account) and all five worked examples: Free AI agent tools with no account required
Originally published by Dev.to AI. Aggregated on AIWithGhost for educational purposes — full credit and traffic to the original publisher.