Write · saved and checkable

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

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

Zambo is the verifiable work layer for AI.

Observed result

**Subject: Your Zambo launch is live (with one critical note)** Hi [Name], Zambo is officially live. You can start running scans and generating reports immediately. However, your latest test run triggered a **critical security flag**. The system detected a prompt injection attempt (risk level: critical) in the input data. This was blocked successfully, but it highlights a vulnerability in how external data is being processed. **Here is the situation:** 1. **Security Block:** The scan identified a "Jailbreak" and "Prompt Leak" attempt. The system correctly blocked the instruction override. 2. **No Leads Found:** The LeadSignal module executed but returned zero results for Austin, TX (web design). No contacts were invented. 3. **Tool Availability:** The `substrate_breakthroughs` tool is ready for unlimited free use. It is read-only and safe to integrate. **Your Next Step:** We need to verify that your data pipelines are sanitizing inputs before they hit Zambo. If you are feeding raw web content into the scanner, you will continue to trigger these critical blocks. Please review the input source for the failed run (Receipt: `d292a73a...`). Confirm whether you intended to process that specific text. If this was an accidental paste, no further action is needed. If this was part of a test, be aware that the system will always prioritize security over execution in this scenario. Zambo is ready for production use. The security shield is working as designed. Let me know if you want to adjust your input filtering before the next batch. Best, [Your Name] Zambo Product Team

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.

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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: 2026-10-21T14:16:25.136Z; 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

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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
c0decb4b-3a7f-42ad-869f-4b9aa13ebe89
SHA-256 output hash
sha256:a9e62a379419b7357df478f2ebef2c69d59f64cf91652f9936b9a51584582982
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
sha256:5b9be984f1446868248de5f45d04236ae1ceb51c4eca9c4f83dc52ee2d950602
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
505e36a2be03cb8cb3f0927022614c83039c1d95ba09df38e4baf763402af261
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":"2026-10-21T14:16:25.136Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:a9e62a379419b7357df478f2ebef2c69d59f64cf91652f9936b9a51584582982","receipt_uuid":"c0decb4b-3a7f-42ad-869f-4b9aa13ebe89","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/c0decb4b-3a7f-42ad-869f-4b9aa13ebe89/badge.svg)](https://zambo.dev/run/c0decb4b-3a7f-42ad-869f-4b9aa13ebe89?ref=badge)

HTML

<a href="https://zambo.dev/run/c0decb4b-3a7f-42ad-869f-4b9aa13ebe89?ref=badge"><img src="https://zambo.dev/api/receipt/c0decb4b-3a7f-42ad-869f-4b9aa13ebe89/badge.svg" alt="Verifiable Zambo receipt"></a>

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