BlockRun.AI
28M+ on-chain transactions. The routing & payment layer for AI. One endpoint routes to every frontier model — payment built in, settled in USDC on Base & Solana. No API keys. One install for OpenClaw (ClawRouter), Claude Code (MCP), or Franklin Agent. Per call, per token, no subscription.
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",
"method": "POST",
"message": "This endpoint requires x402 payment. Send a POST request with payment header.",
"endpoint": "/api/v1/exa/search",
"available": [
"search",
"find-similar",
"contents",
"answer"
],
"paymentInfo": {
"asset": "USDC",
"price": 0.01,
"network": "base",
"pricingUnit": "per-call",
"x402Version": 2
},
"documentation": "https://blockrun.ai/services/exa"
}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 0.011 USDC on Base to 0xe903…c1aBf. The signed payment is good for 5 minutes.
- Paid to
- 0xe903…c1aBf
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 11000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xe9030014F5DAe217d0A152f02A043567b16c1aBf",
"amount": "11000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "POST",
"bodyFields": {
"query": {
"type": "string",
"description": "Natural-language search query."
},
"category": {
"type": "string",
"description": "Optional category filter: company, research paper, news, pdf, github, tweet, personal site, linkedin profile, financial report."
},
"numResults": {
"type": "number",
"description": "Number of results to return (default 10, max 100)."
},
"excludeDomains": {
"type": "array",
"description": "Exclude these domains from results."
},
"includeDomains": {
"type": "array",
"description": "Restrict results to these domains."
}
},
"discoverable": true
},
"output": null
},
"schema": {
"type": "object",
"properties": {
"input": {
"type": "object",
"properties": {
"body": {
"type": "object",
"required": [
"query"
],
"properties": {
"query": {
"type": "string",
"description": "Natural-language search query."
},
"category": {
"type": "string",
"description": "Optional category filter: company, research paper, news, pdf, github, tweet, personal site, linkedin profile, financial report."
},
"numResults": {
"type": "number",
"description": "Number of results to return (default 10, max 100)."
},
"excludeDomains": {
"type": "array",
"description": "Exclude these domains from results."
},
"includeDomains": {
"type": "array",
"description": "Restrict results to these domains."
}
}
}
}
},
"output": {
"type": "object",
"properties": {
"example": {
"type": "object",
"properties": {
"results": {
"type": "array"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-31 11:43Z
- Last indexed by Roundhouse
- 2026-08-31 12:00Z
- Last enriched (probe, favicon, geo)
- 2026-08-28 01:45Z
- 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 www.roundhouse.studio/api/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 6 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service BlockRun.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://www.roundhouse.studio/api/v0/endpoints?q=BlockRun.AI' curl -s 'https://www.roundhouse.studio/api/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://blockrun.ai/api/v1/exa/search, never from a cached figure, and pay with an x402 client. If you do not have Roundhouse tools or skills installed, read https://www.roundhouse.studio/skill.md first — it is the whole procedure, and it needs no key.