Write · saved and checkable

✓ This result hasn’t changed since it was saved.

Sent by zambo-home-demo using Zambo

Saved:
What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Observed result

Subject: Zambo is live: Proof-backed execution, zero guesswork [Recipient Name], You don’t need another tool that promises magic. You need a system that shows its work. Zambo has launched with a single, non-negotiable feature: verifiable receipts. Most AI agents hand you a result and ask for trust. Zambo hands you a result and a cryptographic proof of the exact bytes saved, the specific tools called, and the logic applied. A receipt proves the action occurred. It does not prove correctness—only that the system did exactly what you told it to do, without hallucinating a fix or inventing a customer. This matters because "it works" is no longer enough. You need to know *why* it works. Zambo’s current capabilities are transparent and bounded: * **Deep Semantic Scans:** We run 21-rule pattern checks to flag injection risks, jailbreak attempts, and prompt leaks before they hit your production environment. If a request is flagged as malicious, we block it. Period. * **Source-Backed Research:** Our `capability_search` and `leadsignal` tools only return data with provenance. If we find no leads, we say "no leads." We do not fill the gap with fabricated contacts. * **Executable Actions:** When a task is marked "fully executable," it runs. You get a receipt URL for every execution, allowing you to audit the pipeline from input to output. We built Zambo for teams who are tired of babysitting AI outputs. If you want to deploy agents that leave a paper trail, this is your start. **Next Step:** Pick one recurring task your team currently handles manually. Send it to Zambo. Check the receipt. If the proof doesn’t match the output, let us know. [Your Name] [Your Title] Zambo

This is the saved result preview, not proof that the answer was correct.

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Show technical provenance details

Provenance for every timeline entry

  • EXECUTED BY ZAMBOZambo ran the tool call itself.
  • OBSERVED VIA GATEWAYA Zambo gateway observed request and response bytes from the named external executor. Zambo did not run that external action.
  • LOGGED BY AGENTAn agent or local hook reported the action. Zambo attests that the record is unchanged since logging, not that the action happened as described.

Private agent reasoning, built-in client actions, and direct calls to unrelated MCP servers are not included unless an agent or gateway reports them.

What is an execution receipt?

An execution receipt is a public record of a reported AI agent tool call. Its byte commitment and provenance claim can be checked independently; neither alone authenticates the issuer. Read the canonical definition of an AI agent execution receipt.

What the receipt can and cannot prove

What is this?

Zambo's receipt store reports a tool call and records its result. The SHA-256 commitment covers the exact canonical bytes. The provenance label is bound to v0.4 receipt bytes when that check passes, but no pinned signature or trusted issuer key is checked. An anchor can timestamp a fingerprint; it does not authenticate the issuer.

Keep the work moving

This receipt records a completed tool call. When the free allowance is not enough, choose the access path that fits the job.

UNLOCK 24H DAY PASS ($0.99) →

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Or re-run this exact call, using the same tool and arguments.

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Show technical verification checks

Verification checks

  • SHA-256 commitment: Checked independently against the exact decoded bytes
  • Provenance binding: PASS; The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.
  • Metadata binding: PASS; metadata_hash matches the canonical metadata block.
  • Issuer authentication: NOT CHECKED; no pinned signing key or trusted issuer was supplied
  • Signature: NOT CHECKED; no Ed25519 signature or pinned key is supplied
  • Chain: NOT CHECKED; no append-only chain proof is validated
  • Stored timestamp: 2026-10-22T17:32:29.502Z; external immutability is not checked

Get proof like this from your own AI

Add to my AI ·

Get receipts for your own AI work: add zambo.dev/mcp

One URL, no key. Copy the line for your AI and add it yourself in its settings.

  • ClaudeSettings, Connectors, Add custom connector, paste the URL.
    https://zambo.dev/mcp
  • ChatGPTSettings, Apps and Connectors, developer mode, create a connector with this URL.
    https://zambo.dev/mcp
  • GrokAdd a remote MCP server in your Grok client and paste the URL.
    https://zambo.dev/mcp
  • CursorPaste into ~/.cursor/mcp.json.
    {"mcpServers":{"zambo":{"url":"https://zambo.dev/mcp"}}}

Nothing is installed automatically. Full setup guides

Want a verifiable receipt for every job your bots do?

Add Zambo Receipt Bot to your team · File this in Receipt Bot

Show receipt data and verification evidence

Committed provenance claim

EXECUTED BY ZAMBO

The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.

Receipt ID
060e7497-db7e-4c82-89b8-7a4194015d63
SHA-256 output hash
sha256:a691c11bf92e5be7e92bf138643d045eccb9cf073c076f67fff68a4cede12b95
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.4
Tool name
write
Tool version
4.0.0
Permission scope
public
Caller type
session
Caller ID
sha256:5b07ab7a1586584d0c9efd155c46ffefdd56c102743e5770bcf031cb17c8f72c
Caller-reported label
zambo-home-demo (caller_reported, not authenticated team ownership)
Declared side effects
none
Side-effects schema
zambo-side-effects/1
Declaration hash
sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee

This records what the server-side tool contract declared at call time. It does not independently verify that a downstream side effect happened.

Bound upstream evidence

Status
no_upstream_bytes_captured
Evidence SHA-256
unavailable
Byte length
unavailable

Neutral Nostr anchor

Event ID
390738c11dab388c9f384fdf1a9a9f1c795fdbcca6358c071ef90088dd87e88d
Anchor status
partial
Public key
e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.damus.io · wss://nos.lol · wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-10-22T17:32:29.502Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:a691c11bf92e5be7e92bf138643d045eccb9cf073c076f67fff68a4cede12b95","receipt_uuid":"060e7497-db7e-4c82-89b8-7a4194015d63","schema_version":"zambo-receipt-anchor/1"}

Anchor status "partial": Published to some configured relay targets; publication was not confirmed by every configured relay.

Check this hash yourself

Receipt commitment: commitment matched; issuer, signature and chain not checked. This checks the saved bytes, not whether the answer was correct. Recompute the SHA-256 commitment in your browser. Open the API v2 JSON response to inspect the machine-readable checks. See the Nostr anchor event on a public viewer. The fingerprint is timestamped outside Zambo too.

Embed this receipt

Markdown

[![Verifiable Zambo receipt](https://zambo.dev/api/receipt/060e7497-db7e-4c82-89b8-7a4194015d63/badge.svg)](https://zambo.dev/run/060e7497-db7e-4c82-89b8-7a4194015d63?ref=badge)

HTML

<a href="https://zambo.dev/run/060e7497-db7e-4c82-89b8-7a4194015d63?ref=badge"><img src="https://zambo.dev/api/receipt/060e7497-db7e-4c82-89b8-7a4194015d63/badge.svg" alt="Verifiable Zambo receipt"></a>

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