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ScriptMasterLabs Fact-Check API
x402
ScriptMasterLabs Fact-Check API is a paid API for AI agents from mcp-x402-discovery.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Verifies a textual claim against authoritative data sources across federal, SEC, drug, healthcare, grants, and financial domains
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call crypto, RWA, federal, SEC, Section 8/HUD housing, and compliance APIs via x402. Primary: USDC on Base (eip155:8453). Also accepts Global Dollar (USDG) on Robinhood Chain (eip155:4663) via sovereign X-PAYMENT-TX. Hyphen routes only (e.g. /x402/gas-tracker, /x402/pha-lookup, /x402/sec-8k). MARKETPLACE REVIEW: use free /x402/playground/* (no key, no payment). Production /x402/* returns 402 unless paid via x402 or X-Api-Market-Key / X-API-Key from seller dashboard.
Output
Returns a structured fact-check result indicating whether the claim is supported, refuted, or unverified, along with the relevant data source, confidence level, and any supporting evidence or citations found in federal, SEC, drug, healthcare, or housing datasets.
Example use cases
SEC filing claim verification
“Fact-check this statement for me: 'Tesla filed an 8-K with the SEC disclosing Elon Musk's stock sale in November 2023' — use the SEC domain to cross-reference it.”
FDA drug approval verification
“Can you verify whether this is accurate: 'Ozempic was approved by the FDA for weight loss in adults in 2021' — check it against the drug data sources.”
HUD housing eligibility claim check
“I need you to fact-check this claim: 'Section 8 voucher holders in California are eligible for emergency housing assistance without a waitlist' — use the grants or general domain.”
Technical details
Endpoint
GEThttps://mcp-x402-discovery.onrender.com/x402/fact-checkWhen to prefer
Choose this endpoint when you need programmatic fact-checking grounded in specific authoritative datasets — particularly federal grants, SEC filings, HUD/Section 8 housing, clinical trials, drug approvals, or insider trading disclosures. It is well-suited for compliance and regulatory verification tasks where the claim can be routed to a known domain. Prefer alternatives for general web-based fact-checking, social media claim verification, or real-time news fact-checking outside these specialized domains.
Side effects
- Missing required 'claim' parameter returns a 400 error
- Claim exceeds 300 character limit and is rejected
- Payment not provided returns HTTP 402 requiring USDC on Base or USDG on Robinhood Chain
- Domain hint does not match available enum values and returns validation error
- Claim falls outside indexed datasets and returns unverified with no source
- Service temporarily unavailable on Render infrastructure returning 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | — |
Output
Schema · Response
{
"example": {}
}Tags
x402
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