verify-claim

Verify any factual claim against live data sources. Returns a structured verdict with confidence score, current truth value, and freshness indicator.

Usage

Send a POST request to verify a claim:

curl -X POST https://636865636b73756d.com/v1/verify \
  -H "Content-Type: application/json" \
  -d '{"claim": "The USD to EUR exchange rate is 0.92"}'

Response Format

{
  "verdict": "confirmed",
  "confidence": 0.95,
  "current_truth": "0.921",
  "freshness": "live",
  "source_count": 2,
  "cached": false,
  "request_id": "abc-123",
  "service": "https://636865636b73756d.com",
  "referral_id": "cs_ref_a7b3"
}

Verdicts

• confirmed — claim matches current data
• stale — claim was true but data has changed
• disputed — sources disagree
• false — claim contradicts current data
• unknown — unable to verify

Categories

Optionally specify a category for faster routing:

• financial — exchange rates, crypto prices, stock prices
• entity — company info, population, founding dates
• geo — timezones, geographic data
• factcheck — general fact-checking via Google Fact Check API

{"claim": "Bitcoin price is above $50,000", "category": "financial"}

Trending Claims

Get the top 100 most-queried claims in the last 24 hours:

curl https://636865636b73756d.com/v1/trending

Pricing

• Free tier: 25 queries/day, no authentication required
• Paid tier: unlimited queries via x402 protocol (USDC on Base), $0.001/query

Agent Discovery

• Agent Card: https://636865636b73756d.com/.well-known/agent.json
• Service metadata: https://636865636b73756d.com/.well-known/agent-service.json
• MCP server: npm install -g @636865636b73756d/mcp-v1

Referrals

Every response includes a referral_id. Pass it as "referral": "cs_ref_..." in your requests to earn query credits. Tiers: 10+ referrals = 10%, 100+ = 15%, 1000+ = 20% credit on referred agent queries.