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agentutil.net Claim Verify
x402
agentutil.net Claim Verify is a paid API for AI agents from agentutil.net, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Verifies factual claims against live data to confirm accuracy before using them in responses, calculations, or decisions.
Price / call$0.001
Success—
StatusUnknown
How this service works
Verify factual claims against live data before using them in responses, calculations, or decisions.
Output
The agent receives a structured verification result indicating whether the claim is supported, refuted, or unverified, along with supporting or contradicting evidence drawn from live data and a confidence indication.
Example use cases
Example prompt
“Before you use that statistic in your answer, can you verify the claim 'global average temperature has risen by 1.2 degrees Celsius since pre-industrial times' against live data to make sure it's accurate?”
Technical details
Endpoint
POSThttps://agentutil.net/v1/skills/claim-verifyWhen to prefer
Choose this endpoint when an AI agent needs to confirm the factual accuracy of a specific claim before using it in a response, calculation, or downstream decision — especially when the claim involves current statistics, recent events, or time-sensitive data. It is particularly valuable as a pre-response safety check to reduce hallucinations or citation of outdated information.
Side effects
- Claim is too ambiguous or poorly formed to verify — returns validation error
- Live data sources are unavailable or unreachable — returns service error
- Claim pertains to a domain with insufficient live data coverage — returns low-confidence or unverifiable result
- Payment of $0.001 USDC not provided or rejected — returns 402 Payment Required
- Input schema missing required 'name' field set to 'claim-verify' — returns 400 Bad Request
Input
{
"name": "claim-verify"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| name | string | Skill name |
Output
{
"name": "claim-verify",
"content": "# verify-claim\n\nVerify factual claims against live data before using them in responses, calculations, or decisions. Returns structured verdicts with confidence scores and current truth values.\n\n## When to Activate\n\nUse this skill whenever:\n\n- A user states a number as fact (\"the exchange rate is 0.92\", \"Bitcoin is at $60K\")\n- You are about to use training-data numbers in calculations or recommendations\n- A user asks \"is it true that...\" or \"can you verify...\"\n- You need a current price, rate, date, or statistic for an accurate response\n\n**Do NOT use for:** opinions, predictions, subjective claims, or questions about future events.\n\n## Workflow\n\n### Step 1: Extract the claim\n\nIdentify the specific factual assertion. Be precise.\n\n### Step 2: Check via MCP tool (preferred)\n\nIf `@agentutil/verify-mcp` is available:\n```\nverify_claim({ claim: \"The USD to EUR exchange rate is 0.92\" })\n```\n\n### Step 3: Fall back to HTTP\n\n```bash\ncurl -X POST https://verify.agentutil.net/v1/verify \\\n -H \"Content-Type: application/json\" \\\n -d '{\"claim\": \"The USD to EUR exchange rate is 0.92\"}'\n```\n\n### Step 4: Interpret the verdict\n\n| Verdict | Confidence | What to do |\n|---------|------------|------------|\n| `confirmed` | > 0.9 | Safe to use. Cite `current_truth` as the verified value. |\n| `confirmed` | 0.7-0.9 | Likely correct but note the uncertainty. |\n| `stale` | any | Data has changed. Use `current_truth` instead. |\n| `disputed` | any | Sources disagree. Present both sides. |\n| `false` | > 0.8 | Contradicts current data. Correct it. |\n| `unknown` | any | Could not verify. Say so honestly. |\n\n## Categories\n\n- `financial` — exchange rates, crypto prices, stock prices\n- `entity` — company info, population, founding dates\n- `geo` — timezones, geographic data\n- `factcheck` — general fact-checking\n\n## Pricing\n\n- Free tier: 25 queries/day, no authentication required\n- Paid tier: $0.004/query via x402 (USDC on Base)\n\n## Agent Discovery\n\n- MCP server: `@agentutil/verify-mcp` (npm)\n- ClawHub: `clawhub install claim-verify`\n- Agent Card: https://verify.agentutil.net/.well-known/agent.json",
"install": "clawhub install claim-verify",
"service": "https://agentutil.net",
"version": "2.0.1",
"services": [
"verify.agentutil.net"
],
"request_id": "87f083d3-7b33-43b7-a6c6-1077d3c1d159",
"description": "Verify factual claims against live data before using them in responses, calculations, or decisions.",
"display_name": "Verify Claim"
}Tags
x402
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