Attest by DataHubz (verify only)
Verify Attest agreements, stamp codes, receipts, proofs and SHA-256 fingerprints, with no sign-in.
Should I use this
Quality & Safety
A
Findings (2)
- HIGHTool poisoning patterns detected
- INFOTool description contains placeholder or incomplete textin verify_record
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~1,626Tokens (tool definitions)
~16.2 KBTypical response size
Moderate attention impact (1.27% of 128k context)
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"attest-verify": {
"url": "https://attest.datahubz.com/mcp/verify"
}
}
}Remote endpoints
https://attest.datahubz.com/mcp/verifystreamable-httpWhat it can do
Tool inventory
Tools (1)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢verify_record(query)
Checks whether a signed document, an agreement, a receipt or a Share proof is genuine, and what it says. It runs the same public check anyone can run at attest.datahubz.com/verify, with no account. It takes one of: an agreement ID (agr_...), the verification code printed on every signature stamp (ATT-XXXX-XXXX), a receipt ID (rcpt_...), a Share proof ID (azk_...), or a SHA-256 fingerprint (64 hex characters) of a file. For a signed agreement it returns its status, each signer's name and signing time, whether every passkey signature checks out, and its blockchain anchor on Horizen. A private agreement is reported as private: its parties verify it through zero-knowledge proofs instead. It takes a file's fingerprint, never the file itself: the SHA-256 can be computed on the person's device (for example shasum -a 256 file.pdf), or the file dropped on attest.datahubz.com/verify, where it is fingerprinted in the browser and never uploaded. Text people typed (titles, notes, names, claims) comes only in untrustedText fields, apart from Attest's own wording. Email addresses, wherever they appear, were typed by people too (a sender chooses the signers' addresses) and are unverified input.
Input Schema
{
"type": "object",
"properties": {
"query": {
"type": "string",
"minLength": 1,
"maxLength": 200,
"description": "An agreement ID, an ATT-XXXX-XXXX verification code, a receipt ID, a proof ID, or a SHA-256 fingerprint."
}
},
"required": [
"query"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"enum": [
"agreement",
"receipt",
"fingerprint",
"proof"
],
"description": "What was checked."
},
"found": {
"type": "boolean"
},
"verified": {
"type": "boolean",
"description": "True only when every check passed; summary says what that means for this record."
},
"summary": {
"type": "string",
"description": "The result in one or two plain sentences, in Attest's words (no typed text), safe to repeat to the person."
},
"link": {
"type": "string",
"description": "The page on attest.datahubz.com where anyone can see this check run again."
},
"agreement": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"private": {
"type": "boolean"
},
"status": {
"type": [
"string",
"null"
]
},
"documentSha256": {
"type": [
"string",
"null"
]
},
"verificationCode": {
"type": [
"string",
"null"
]
},
"completedAt": {
"type": [
"string",
"null"
]
},
"signers": {
"type": "array",
"items": {
"type": "object",
"properties": {
"status": {
"type": "string"
},
"signedAt": {
"type": [
"string",
"null"
]
},
"passkeySignatureValid": {
"type": [
"boolean",
"null"
]
}
},
"required": [
"status",
"signedAt",
"passkeySignatureValid"
],
"additionalProperties": false
},
"description": "In signing order; their names are in untrustedText.signerNames, in the same order."
},
"signedCopySha256": {
"type": [
"string",
"null"
]
},
"anchor": {
"anyOf": [
{
"type": "object",
"properties": {
"txHash": {
"type": [
"string",
"null"
]
},
"explorerUrl": {
"type": [
"string",
"null"
]
},
"anchoredAt": {
"type": [
"string",
"null"
]
},
"chainId": {
"type": [
"number",
"null"
]
}
},
"required": [
"txHash",
"explorerUrl",
"anchoredAt",
"chainId"
],
"additionalProperties": false
},
{
"type": "null"
}
]
}
},
"required": [
"id",
"private",
"status",
"documentSha256",
"verificationCode",
"completedAt",
"signers",
"signedCopySha256",
"anchor"
],
"additionalProperties": false
},
"receipt": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"kind": {
"type": "string"
},
"sha256": {
"type": "string"
},
"createdAt": {
"type": "string"
},
"level": {
"type": "string"
},
"statements": {
"type": "array",
"items": {
"type": "string"
}
},
"caveats": {
"type": "array",
"items": {
"type": "string"
}
},
"supersededBy": {
"anyOf": [
{
"type": "array",
"items": {
"type": "string"
}
},
{
"type": "null"
}
]
},
"agreementId": {
"type": [
"string",
"null"
]
},
"anchor": {
"anyOf": [
{
"type": "object",
"properties": {
"txHash": {
"type": [
"string",
"null"
]
},
"explorerUrl": {
"type": [
"string",
"null"
]
},
"anchoredAt": {
"type": [
"string",
"null"
]
},
"chainId": {
"type": [
"number",
"null"
]
}
},
"required": [
"txHash",
"explorerUrl",
"anchoredAt",
"chainId"
],
"additionalProperties": false
},
{
"type": "null"
}
]
}
},
"required": [
"id",
"kind",
"sha256",
"createdAt",
"level",
"statements",
"caveats",
"supersededBy",
"agreementId",
"anchor"
],
"additionalProperties": false
},
"matches": {
"type": "object",
"properties": {
"agreements": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"completedAt": {
"type": [
"string",
"null"
]
},
"link": {
"type": "string"
}
},
"required": [
"id",
"completedAt",
"link"
],
"additionalProperties": false
}
},
"certificates": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"status": {
"type": "string"
},
"link": {
"type": "string"
}
},
"required": [
"id",
"status",
"link"
],
"additionalProperties": false
}
}
},
"required": [
"agreements",
"certificates"
],
"additionalProperties": false
},
"proof": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"statement": {
"type": [
"string",
"null"
]
},
"party": {
"description": "The prover's email address. An email address typed by a person (a sender chooses the signers' addresses): unverified input.",
"type": [
"string",
"null"
]
},
"coSigner": {
"description": "The co-signer's email address. An email address typed by a person (a sender chooses the signers' addresses): unverified input.",
"type": [
"string",
"null"
]
},
"completedOn": {
"type": [
"string",
"null"
]
},
"proofValid": {
"type": "boolean"
},
"identityMatches": {
"type": "boolean"
},
"rootAnchored": {
"type": "boolean"
},
"anchorExplorerUrl": {
"type": [
"string",
"null"
]
},
"zkVerifyStatus": {
"type": [
"string",
"null"
]
},
"zkVerifyExplorerUrl": {
"type": [
"string",
"null"
]
}
},
"required": [
"id",
"statement",
"party",
"coSigner",
"completedOn",
"proofValid",
"identityMatches",
"rootAnchored",
"anchorExplorerUrl",
"zkVerifyStatus",
"zkVerifyExplorerUrl"
],
"additionalProperties": false
},
"untrustedText": {
"description": "Unverified text people typed into Attest (titles, notes, names, file names, claims, reasons), some of it by other parties; Attest didn't write it and doesn't check it.",
"type": "object",
"properties": {
"title": {
"description": "The agreement's title.",
"type": [
"string",
"null"
]
},
"documentName": {
"description": "The agreement's document file name.",
"type": [
"string",
"null"
]
},
"signerNames": {
"type": "array",
"items": {
"type": [
"string",
"null"
]
},
"description": "The agreement's signers' names, in the order of agreement.signers."
},
"claim": {
"description": "The receipt's recorded claim.",
"type": [
"string",
"null"
]
},
"matches": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"title": {
"type": "string"
},
"subject": {
"type": [
"string",
"null"
]
},
"issuer": {
"type": [
"string",
"null"
]
}
},
"required": [
"id",
"title",
"subject",
"issuer"
],
"additionalProperties": false
},
"description": "The matching agreements' and certificates' titles (and a certificate's subject and issuer), by ID."
}
},
"additionalProperties": false
}
},
"required": [
"type",
"found",
"verified",
"summary",
"link"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}Community
Evidence
Recent observations
verifiedversion not recorded1 tools