the-stall.intuitek.ai
AI-powered claim verification. Searches DuckDuckGo, Wikipedia, Hacker News, and arXiv in parallel, then uses GPT-4o-mini to assess the claim and return a structured verdict: confirmed / contradicted / uncertain, with confidence score (0–1), supporting and contradicting evidence excerpts with source URLs, key entities, and step-by-step reasoning. Use before an agent acts on a factual assertion it received from another agent or user. $0.500/call.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x03d773c52B67993e60Ecb3134b17436fE03B584c",
"amount": "470000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://the-stall.intuitek.ai/cap/fact-check",
"mimeType": "application/json",
"description": "Factual claim verification using Wikipedia evidence + AI synthesis. Extracts search terms from the claim, queries Wikipedia for relevant articles, and returns a structured verdict (LIKELY_TRUE / LIKELY_FALSE / MIXED / UNVERIFIABLE) with confidence score, explanation, and source citations."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"claim": "example"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"claim"
],
"properties": {
"claim": {
"type": "string",
"description": "The factual statement to verify (e.g. 'The Eiffel Tower is 330 meters tall' or 'Apple was founded in 1976')."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.5 USDC on Base to 0x03d7…B584c. The signed payment is good for 5 minutes.
- Paid to
- 0x03d7…B584c
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 500000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x03d773c52B67993e60Ecb3134b17436fE03B584c",
"amount": "500000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"claim": "example"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"claim"
],
"properties": {
"claim": {
"type": "string",
"description": "The factual assertion to verify (e.g. 'Bitcoin was created in 2008' or 'TypeScript is a superset of JavaScript'). Be specific — vague claims return uncertain verdicts."
},
"context": {
"type": "string",
"description": "Optional background context that helps interpret the claim (e.g. domain, time period, known related facts). Narrows the verification scope."
}
}
}
},
"additionalProperties": false
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-06-18 06:28Z
- Last indexed by Roundhouse
- 2026-06-24 11:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-14 15:46Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service the-stall.intuitek.ai and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=the-stall.intuitek.ai' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://the-stall.intuitek.ai/cap/fact-check, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.