Free AI Agent Tools With No Signup: What 20 Free Calls a Day Actually Finishes

Description and use

Zambo offers a no‑signup layer that lets users run up to 20 AI agent calls per day, producing verifiable receipts for completed jobs.

Problem

Users want to run AI agent tools without creating an account or providing payment details, but most free tiers require signup or a credit card.

Outcome

In a single free session, four real jobs finished: a live BTC price check, a website audit scored 42/100, a business idea scored 49/100, and a two‑step job (live ETH price + repair idea) bundled into one link. Each job produced a verifiable receipt.

Workflow

• 1. Open https://zambo.dev/chat or point an MCP client at https://zambo.dev/mcp
• 2. Describe the job in the chat or send a request to the MCP endpoint
• 3. The tool executes the job and returns a finished result
• 4. A public receipt is generated at https://zambo.dev/run/…
• 5. Verify the receipt at https://zambo.dev/verify/ to confirm the result was not altered

Evidence

The free tier is 20 free calls per day. One count for the day, resetting at UTC midnight.

Source

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.

Source

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/.

Source