signal-engine-production-d88d.up.railway.app
11 MCP tools for autonomous trading agents. Real-time signals, sentiment, macro regime, web search, code execution. Pay per call with USDC on Base — no API keys needed.
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.
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 0.012 USDC on Base to 0xf080…Be035. The signed payment is good for 5 minutes.
- Paid to
- 0xf080…Be035
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 12000 smallest units
- Buys
- AI-powered web search via Tavily
- Returns
- application/json
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf080a1Aab08650946acDa41410a7eDC14f7Be035",
"amount": "12000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://signal-engine-production-d88d.up.railway.app/v1/gateway/search/tavily",
"description": "AI-powered web search via Tavily",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"schema": {
"type": "object",
"required": [
"query"
],
"properties": {
"query": {
"type": "string",
"description": "Search query"
},
"topic": {
"enum": [
"general",
"news",
"finance"
],
"type": "string"
},
"max_results": {
"type": "integer",
"default": 5
},
"search_depth": {
"enum": [
"basic",
"advanced"
],
"type": "string"
}
}
}
},
"output": {
"type": "json",
"example": {
"query": "bitcoin ETF approval",
"results": [
{
"url": "https://example.com",
"score": 0.95,
"title": "Bitcoin ETF...",
"content": "..."
}
],
"response_time": 1.2
}
}
},
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "POST",
"schema": {
"type": "object",
"required": [
"query"
],
"properties": {
"query": {
"type": "string",
"description": "Search query"
},
"topic": {
"enum": [
"general",
"news",
"finance"
],
"type": "string"
},
"max_results": {
"type": "integer",
"default": 5
},
"search_depth": {
"enum": [
"basic",
"advanced"
],
"type": "string"
}
}
}
},
"output": {
"type": "json",
"example": {
"query": "bitcoin ETF approval",
"results": [
{
"url": "https://example.com",
"score": 0.95,
"title": "Bitcoin ETF...",
"content": "..."
}
],
"response_time": 1.2
}
}
},
"schema": {
"output": {
"required": [
"query",
"results"
],
"properties": {
"query": {
"type": "string"
},
"results": {
"type": "array",
"items": {
"type": "object",
"properties": {
"url": {
"type": "string",
"format": "uri"
},
"score": {
"type": "number"
},
"title": {
"type": "string"
},
"content": {
"type": "string"
}
}
}
},
"response_time": {
"type": "number"
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-06-18 05:35Z
- Last indexed by Roundhouse
- 2026-07-18 04:40Z
- Last enriched (probe, favicon, geo)
- 2026-09-14 10:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 405
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 signal-engine-production-d88d.up.railway.app 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=signal-engine-production-d88d.up.railway.app' 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://signal-engine-production-d88d.up.railway.app/v1/gateway/search/tavily, 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.