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OMNI Paid Integrity Verification API
x402
OMNI Paid Integrity Verification API is a paid API for AI agents from omni-x402-integrity.azzbackwardz01.chatgpt.site, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).
Verifies that a piece of text matches an expected SHA-256 hash, returning a signed MATCH/MISMATCH result with settlement evidence, paid per-call via x402.
Price / call$0.005
Success—
StatusUnknown
How this service works
Machine-payable SHA-256 pinned-evidence verification with signed execution and settlement evidence.
Output
A JSON object with a 'result' field containing 'overall_status' (MATCH or MISMATCH) and a 'service_id' field ('pinned-evidence-integrity-verification/v1'), plus signed execution and settlement evidence confirming the verification was paid and performed.
Example use cases
Legal document tamper detection
“I need to confirm that this signed contract hasn't been altered — the document ID is 'lease-agreement-2025', here's the base64-encoded text, and the SHA-256 we pinned at signing time is 'b94d27b9934d3e08a52e52d7da7dabfac484efe04294e576a080e5c5ad8de1e5'. Can you run the integrity check and give me the signed result?”
Software release artifact validation
“Before I deploy this config file, please verify its integrity — ID is 'nginx-config-prod', I'll give you the base64 of the file content, and the expected SHA-256 is '2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824'. Tell me if it's a MATCH or MISMATCH with signed evidence.”
Audit trail proof for compliance
“For our compliance audit, I need a signed verification receipt showing that document 'audit-log-q1-2025' matches the hash we registered — the base64 content is attached, and the expected SHA-256 is 'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855'. Can you run this through the paid integrity verifier and save the signed result?”
Technical details
Endpoint
GEThttps://omni-x402-integrity.azzbackwardz01.chatgpt.site/v1/verify-text?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a machine-payable, cryptographically signed record proving that a specific piece of text matches an expected SHA-256 hash — especially in automated pipelines, compliance workflows, or multi-party audits where a simple local hash comparison isn't sufficient because you need third-party signed execution evidence and a payment-settled audit trail.
Side effects
- Invalid or malformed SHA-256 hash (not 64 lowercase hex characters) returns a validation error
- Base64-encoded content that cannot be decoded returns a decode error
- Missing required query parameters (id, content_b64, expected_sha256) returns a 400-level error
- Payment failure or insufficient USDC balance blocks the request before verification
- Content that does not match the hash returns MISMATCH status rather than an error
- Server-side hashing or signing failure returns a 500-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"required": [
"service_id",
"payment_id",
"request_sha256",
"result",
"execution_proof",
"receipt_url"
],
"properties": {
"result": {
"type": "object",
"required": [
"overall_status",
"items"
],
"properties": {
"items": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"expected_sha256",
"actual_sha256",
"status",
"byte_length"
],
"properties": {
"id": {
"type": "string"
},
"status": {
"enum": [
"MATCH",
"MISMATCH"
],
"type": "string"
},
"byte_length": {
"type": "integer",
"minimum": 0
},
"actual_sha256": {
"type": "string",
"pattern": "^[0-9a-f]{64}$"
},
"expected_sha256": {
"type": "string",
"pattern": "^[0-9a-f]{64}$"
}
},
"additionalProperties": false
}
},
"overall_status": {
"enum": [
"MATCH",
"MISMATCH"
],
"type": "string"
}
},
"additionalProperties": false
},
"payment_id": {
"type": "string",
"pattern": "^pay_[0-9a-f]{40}$"
},
"service_id": {
"type": "string",
"const": "pinned-evidence-integrity-verification/v1"
},
"receipt_url": {
"type": "string",
"format": "uri"
},
"request_sha256": {
"type": "string",
"pattern": "^[0-9a-f]{64}$"
},
"execution_proof": {
"type": "object",
"required": [
"algorithm",
"kid",
"payload",
"signature"
],
"properties": {
"kid": {
"type": "string",
"const": "urn:omni:sirfixall:receipt-key:sites-v1"
},
"payload": {
"type": "object"
},
"algorithm": {
"type": "string",
"const": "EdDSA"
},
"signature": {
"type": "string"
}
}
}
}
},
"example": {
"result": {
"overall_status": "MATCH"
},
"service_id": "pinned-evidence-integrity-verification/v1"
}
}Tags
x402
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