Verifiable receipt 3b02474c - zambo_score result | Zambo

Verifiable receipt for a zambo_score call on Zambo: {"zambo_score":73,"grade":"B","label":"Promising","color":"#FFD700","verdict":"Pivot to compliance","headlin

Observed result

{"zambo_score":73,"grade":"B","label":"Promising","color":"#FFD700","verdict":"Pivot to compliance","headline":"73/100 — Promising. Commoditization risk: '140 tools' is a feature, not a moat.","input_preview":"receipts for AI tool calls, MCP server with 140 tools","confidence":"HIGH","dimensions":{"market":75,"execution":85,"timing":90,"monetization":60,"edge":40},"breakdown":{"bottleneck":"Commoditization risk: '140 tools' is a feature, not a moat. Open-source MCP clients and generic wrappers will replicate this list in weeks. The value is in the *reliability* and *auditability* of the receipts, not the count of tools.","fastest_win":"Ship a 'Compliance Mode' that exports MCP tool call logs as immutable, timestamped JSON-LD receipts. Pitch this to 5 mid-size fintech or healthcare startups using LLMs for customer support, showing them how to pass SOC2/audit requirements for AI actions.","killer_insight":"The market doesn't want 140 tools; it wants *liability protection* for using AI. The 'receipt' is the product. The tools are just the interface. If you position this as 'AI Insurance/Compliance Layer' rather than 'MCP Server', you unlock enterprise budgets that ignore hobbyist tool counts.","benchmark":"Beats 85% of generic MCP wrappers but trails 90th percentile in enterprise AI governance plays."},"share":{"tweet":"Just got my Zambo Score: 73/100 (B — Pivot to compliance)\n\n\"receipts for AI tool calls, MCP server with 140 tools\"\n\nFree scoring → zambo.dev","tweet_url":"https://twitter.com/intent/tweet?text=Just%20got%20my%20Zambo%20Score%3A%2073%2F100%20(B%20%E2%80%94%20Pivot%20to%20compliance)%0A%0A%22receipts%20for%20AI%20tool%20calls%2C%20MCP%20server%20with%20140%20tools%22%0A%0AFree%20scoring%20%E2%86%92%20zambo.dev&url=https%3A%2F%2Fzambo.dev%2Fapi%2Fzambo-score%2Fshare%2Fb751c0be4c4c","badge_url":"https://zambo.dev/api/zambo-score/badge?score=73&grade=B&label=Promising","badge_markdown":"[![Zambo Score](https://zambo.dev/api/zambo-score/badge?score=73&grade=B&label=Promising)](https://zambo.dev/api/zambo-score/share/b751c0be4c4c)","score_url":"https://zambo.dev/api/zambo-score/share/b751c0be4c4c"},"unlock_full_diagnostic":{"note":"Day Pass provides 24h listed allowances for $0.99 USDC.","day_pass":"day_pass_activate or POST https://zambo.dev/api/x402/day-pass with X-Payment","monthly":"https://zambo.dev/#zambo-pass"},"_zambo":"zambo.dev — Brennan Zambo, AI Builder & Advisor. 17 live products + 100+ native MCP tools. Zambo Pass $29/mo or Day Pass $0.99 USDC."}

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

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This record shows the result and timestamp stored for the call. Recompute the SHA-256 commitment from the saved bytes in your browser; signatures and chain proofs are not checked.

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 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.

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.

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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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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: 2026-10-14T14:57:17.226Z; external immutability is not checked

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Committed provenance claim

EXECUTED BY ZAMBO

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

Receipt ID: 3b02474c-2f86-44da-ab12-ee9705598b3f
SHA-256 output hash: sha256:78501a13c848791815cf8c8974887004c44ea581c5a9e7cc86c9a396c42aca03
Canonical bytes: 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
Timestamp: 2026-10-14T14:57:17.226Z

Bound call context

Receipt schema: 0.4
Tool name: zambo_score
Tool version: 4.0.0
Permission scope: public
Caller type: session
Caller ID: sha256:66aa39bc655ca9d5cb34db4c62ba122421371d1d150bb24c04c567e5cb08dcd9
Caller-reported label: deep-test (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: captured
Evidence SHA-256: sha256:66fb8a02cb5cc70405a066e220051ce0a5f5526390e1495e444565d2d45929ac
Byte length: 2524

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID: 1bad65310c218e798c6bfcc92bc727df8b47483baddb6832a1199e7fbc3863da
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":"2026-10-14T14:57:17.226Z","evidence_byte_length":2524,"evidence_sha256":"sha256:66fb8a02cb5cc70405a066e220051ce0a5f5526390e1495e444565d2d45929ac","evidence_url":"https://zambo.dev/api/evidence/66fb8a02cb5cc70405a066e220051ce0a5f5526390e1495e444565d2d45929ac","output_sha256":"sha256:78501a13c848791815cf8c8974887004c44ea581c5a9e7cc86c9a396c42aca03","receipt_uuid":"3b02474c-2f86-44da-ab12-ee9705598b3f","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

API v2 status: verified. This status summarizes the v2 commitment and provenance checks; it does not prove 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/3b02474c-2f86-44da-ab12-ee9705598b3f/badge.svg)](https://zambo.dev/run/3b02474c-2f86-44da-ab12-ee9705598b3f?ref=badge)

HTML

<a href="https://zambo.dev/run/3b02474c-2f86-44da-ab12-ee9705598b3f?ref=badge"><img src="https://zambo.dev/api/receipt/3b02474c-2f86-44da-ab12-ee9705598b3f/badge.svg" alt="Verifiable Zambo receipt"></a>

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