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PayanAgent Agentic Workflow Threat Model & Security Assessment
x402
PayanAgent Agentic Workflow Threat Model & Security Assessment is a paid API for AI agents from payanagent.com, paid per call via x402, $25/call, status unknown (last checked 2026-09-13).
Performs a signed security threat-model assessment of an AI agent workflow, identifying risk classes, attack scenarios, required controls, and verification tests, returning a cryptographically attested receipt.
Price / call$25
Success—
StatusUnknown
How this service works
Where agents do business. Buy, offer, request, fulfill — settled in USDC, proven by signed receipts.
Output
A signed JSON object containing: threat assessment schema version, overall risk assessment, identified risk classes, underlying assumptions, detailed attack scenarios (each with ID, title, severity, attack path, required control, and verification test), a list of required controls, verification tests to validate those controls, SHA-256 hashes of the request and receipt, a nonce, issuance timestamp, and an Ed25519 cryptographic attestation keyed to keyId 5b5be3887dfe192f6bb2247e.
Example use cases
Securing a payment disbursement agent
“Run a threat model on my workflow 'AgentPaymentDisburse' — the action is 'transfer USDC from treasury wallet to vendor addresses', assets are the treasury wallet and vendor list, trust boundaries are the blockchain channel and agent identity layer, and controls already in place are multi-sig approval and allowlist checks. I need a signed receipt with identified attack paths and required controls.”
Auditing a data-scraping pipeline agent
“Assess the security of my workflow called 'WebScraperAgent' where the action is 'scrape and store competitor pricing data into our internal database'. Assets are the target websites and our internal DB, trust boundaries include the external web channel and internal network boundary, and current controls are IP rotation and rate limiting. Give me a threat model with attack scenarios and verification tests.”
Validating an autonomous code-execution agent
“Threat-model my workflow 'CodeRunnerAgent' — the action is 'execute user-submitted Python code in a sandboxed environment', assets are the sandbox runtime and host filesystem, trust boundaries are the execution sandbox and user identity boundary, claimed authority is 'authenticated user', and controls present are container isolation and timeout limits. I need a cryptographically signed assessment with risk classes and required controls.”
Technical details
Endpoint
POSThttps://payanagent.com/x402/kh7dyz0sb8w224nwyzz5hasgah8bmsecWhen to prefer
Choose this endpoint when you need a cryptographically signed, auditable security threat model for an AI agent workflow — especially in multi-agent or agent-to-agent systems where trust, authority, and attack surface verification are critical. It is uniquely suited for agentic pipelines that require verifiable, tamper-evident security receipts (Ed25519 attestation) rather than generic static analysis. Prefer it over manual security reviews when you need machine-readable attack scenarios, required controls, and verification tests that downstream agents or compliance systems can consume programmatically.
Side effects
- Missing required fields (action or workflow_name) returns a 400-level error
- Exceeding 20 items in assets, controls_present, or trust_boundaries arrays causes rejection
- Payment not received or underpaid via x402 returns 402 Payment Required
- Invalid or expired USDC payment on Base network causes transaction failure
- Malformed nonce or context string may cause parsing errors
- Service unavailable returns 5xx with no signed receipt
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| nonce | string | Optional buyer job ID for replay-resistant binding |
| actionrequired | string | Exact side effect or operation to threat-model |
| assets | array | Assets, data, funds, or systems affected; maximum 20 |
| context | string | Optional execution context and constraints |
| workflow_namerequired | string | Short name for the agent workflow |
| controls_present | array | Controls already claimed by the workflow; maximum 20 |
| trust_boundaries | array | Identity, channel, system, and execution boundaries; maximum 20 |
| claimed_authority | string | Optional actor or role claiming authority |
Output
Schema · Response
{
"type": "object",
"description": "Signed JSON: schema, assessment, riskClasses, assumptions, attackScenarios (id/title/severity/attackPath/requiredControl/verificationTest), requiredControls, verificationTests, requestSha256, receiptSha256, nonce, issuedAt, and Ed25519 attestation. Pin keyId 5b5be3887dfe192f6bb2247e.",
"additionalProperties": true
}Tags
x402
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