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

Zambo is the verifiable work layer for AI.

Observed result

Subject: Zambo is live: Your AI research and lead generation toolkit Hi [Name], Zambo is officially launching. We built it to solve one specific problem: turning raw AI capabilities into actionable business insights without the guesswork. We are not adding more noise. We are providing precision. Zambo offers two core tools available on our free tier, allowing you to test the value immediately without a credit card. First, **Substrate Breakthroughs**. This is a read-only research feed that aggregates living AI research. It identifies adversarial research patterns and breakthroughs across 51 lifeforms. It does not just summarize news; it structures raw data into a usable object format for your workflows. If you are tracking where AI is actually going, this is your signal. Second, **LeadSignal**. This tool executes real-time lead searches based on specific trades and locations. It does not invent contacts. If no source-backed leads exist in a specific market—like web design in Austin, for example—it returns zero. That integrity is the point. You get verified prospects or a clear "no data" result, never hallucinated names. Both tools are fully executable in chat. No complex setup. No API keys to manage. Just type your query and get the result. We are currently accepting early adopters who want to integrate these tools into their daily operations. The free tier includes unlimited calls to Substrate and a daily quota for LeadSignal. Paid users via the Zambo Pass get expanded limits and priority support. Ready to see if Zambo fits your workflow? **Click here to start your first free search:** [Link to Zambo Dashboard] Tell us in the reply what your biggest data bottleneck is. We read every response. Best, [Your Name] Founder, Zambo zambo.dev *** **Note on the provided "Launch Checks":** * **Security Scan:** The input contained a flagged "critical" injection attempt (jailbreak/prompt leak). This was ignored as it is malicious metadata, not product functionality. * **Lead Signal:** The test search for "Web Design in Austin" returned **zero** leads. This email does not claim we have leads for you. It highlights the tool's ability to return truthful "no results" data, which is a feature of reliability. * **Substrate:** Described as a research feed, not a customer generator. * **Receipts:** The URLs provided are internal run logs. They are not included in the client-facing email to avoid clutter, but they serve as proof of execution for your internal records.

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.

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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: 2026-10-24T04:19:05.630Z; external immutability is not checked

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  • 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"}}}

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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
4cbb4419-58f7-4cc9-af19-dc61c9e58bf0
SHA-256 output hash
sha256:10cde34c7816a0d384687c8c1deb1789e053f61ac9ce828d705ac59e8145508f
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:ba7754fe1542804e285c019188a5dea711558b823db10cba79dd7b07add78c03
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
d9fae13add68edeed67e8999ff4d53d31774382f885d9a81bd26c8c4988af26c
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":"2026-10-24T04:19:05.630Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:10cde34c7816a0d384687c8c1deb1789e053f61ac9ce828d705ac59e8145508f","receipt_uuid":"4cbb4419-58f7-4cc9-af19-dc61c9e58bf0","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/4cbb4419-58f7-4cc9-af19-dc61c9e58bf0/badge.svg)](https://zambo.dev/run/4cbb4419-58f7-4cc9-af19-dc61c9e58bf0?ref=badge)

HTML

<a href="https://zambo.dev/run/4cbb4419-58f7-4cc9-af19-dc61c9e58bf0?ref=badge"><img src="https://zambo.dev/api/receipt/4cbb4419-58f7-4cc9-af19-dc61c9e58bf0/badge.svg" alt="Verifiable Zambo receipt"></a>

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