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: Launch update: What we verified, and what we’re holding** Hi [Name], Skipping the pleasantries. You asked for a launch email based strictly on the current audit results. Here is the unvarnished status, ready for your review. We have completed a deep semantic analysis of our current outreach pipeline. The system flagged two critical security patterns: an instruction override attempt and a prompt leak risk. Both were blocked. This isn’t a bug; it’s the guardrail working as designed. **The Core Point:** Your current lead generation tooling returned zero source-backed prospects for the Austin web design sector. The system explicitly refused to invent contacts. We have no named prospects, no confirmed fixes, and no sales to report. A receipt proves the data saved; it does not prove the data is correct or useful. Right now, the data is empty. **Why This Matters:** Launching an outreach campaign with zero verified leads is a waste of compute and brand capital. We are not sending emails into the void. We are holding the line until we have real, source-backed targets. **Next Step:** Do not send the draft. Instead, run a new search with a different geographic filter or trade category. The current Austin/Web Design query has exhausted its free tier without results. I’ve attached the full audit receipt and the empty lead signal log. Review them. If you want to proceed, change the search parameters. If not, we wait. Let me know if you want to adjust the search criteria. Best, [Your Name] [Your Title] [Zambo]

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

Check this receipt Run your own
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) →

See all plans on the pricing page →

RUN YOUR OWN FREE CALL →

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

Share this receipt

Share on X · Share on LinkedIn ·

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: 2026-10-27T19:50:55.997Z; 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
bf67704b-8b8e-4a2c-9c21-cc7688bf8558
SHA-256 output hash
sha256:765c0a0867d2e7a8f551485bdaca15875d5abce3ff12aae22c86e7176a1b890a
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:d45a9104cf63770286e6f1f41be63a420dffd6f3e5a139a1ea049fd9fc13b754
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
05fc733822ba0d6206647a8ee5984bfd7bc8cafc456b8ed3a5fff0c79fbe46d0
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":"2026-10-27T19:50:55.997Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:765c0a0867d2e7a8f551485bdaca15875d5abce3ff12aae22c86e7176a1b890a","receipt_uuid":"bf67704b-8b8e-4a2c-9c21-cc7688bf8558","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/bf67704b-8b8e-4a2c-9c21-cc7688bf8558/badge.svg)](https://zambo.dev/run/bf67704b-8b8e-4a2c-9c21-cc7688bf8558?ref=badge)

HTML

<a href="https://zambo.dev/run/bf67704b-8b8e-4a2c-9c21-cc7688bf8558?ref=badge"><img src="https://zambo.dev/api/receipt/bf67704b-8b8e-4a2c-9c21-cc7688bf8558/badge.svg" alt="Verifiable Zambo receipt"></a>

Open badge SVG

Recent receipts

74,060 verifiable receipts minted

RUN YOUR OWN FREE CALL →

Get your own: connect https://zambo.dev/mcp. Free daily calls, no API key.

Open the interactive receipt view

Your AI's work could look like this

Run a first job free in Zambo Chat. No account needed.

Start a free job Day Pass · $0.99 for 24 hours