Verifiable receipt a8681942 - write result | Zambo

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

Zambo is the verifiable work layer for AI.

Zambo is the verifiable work layer for AI. Verifiable receipt for a write call on Zambo: Subject: PromptShield is live [Name], PromptShield is ready for public use. The API now provides real-time detecti

Observed result

Subject: PromptShield is live [Name], PromptShield is ready for public use. The API now provides real-time detection for prompt injection and jailbreak attempts. It runs a deep scan using semantic analysis and a pattern library of 18 rules to identify malicious intent before it reaches your core logic. In our latest verification run, the system correctly flagged a critical injection attempt. It identified the attack vector as a jailbreak and a policy bypass. The output included specific metadata: an injection risk score of 95, a "critical" risk level, and the exact flagged pattern ("Instruction Override"). This confirms the engine can distinguish between benign queries and active threats with high precision. The integration is straightforward. You send your prompt payload to the endpoint; you receive a structured JSON response detailing the threat landscape. The free tier offers unlimited calls for 5 daily limits, allowing you to stress-test your defenses without immediate cost barriers. For teams needing higher throughput or advanced reporting, Zambo Pass is available. You can view the full technical documentation and API reference here: https://zambo.dev/api/prompt-shield To get started, register for a free API key via the link above. Your first scan takes less than two seconds. Let’s keep your AI safe. Best, The Zambo Team https://zambo.dev

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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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: 2026-10-17T20:32:30.837Z; external immutability is not checked

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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"}}}

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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
a8681942-a9b8-446f-8aab-bfc89549ee1d
SHA-256 output hash
sha256:c96d90ac0637857736c2e48a3a7a4073b66e1fffc7129111a4426454b79be240
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
sha256:2b37ee3a82a01dfe686111d8480fad4f316a2f7a3b06a0323deb2fbd124dc178
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
4206fa790819a9de730536716dba76934c0ba291efc5191c74be2e83f05be0ab
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":"2026-10-17T20:32:30.837Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:c96d90ac0637857736c2e48a3a7a4073b66e1fffc7129111a4426454b79be240","receipt_uuid":"a8681942-a9b8-446f-8aab-bfc89549ee1d","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.

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Markdown

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HTML

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