Roundhouse

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.

InfraLiveeip155:8453Exactvia cdp
https://signal-engine-production-d88d.up.railway.app/v1/gateway/execute/e2b
Settlements · 30d
163↓ 51%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$13.70
Verified settled volume
1,151 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-07-24 13:18Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xf080a1Aab08650946acDa41410a7eDC14f7Be035

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

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.

0.005USDC≈ $0.005 USD
on Base · exact scheme

Pay 0.005 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
5000 smallest units
Buys
Sandboxed Python code execution via E2B
Returns
application/json
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xf080a1Aab08650946acDa41410a7eDC14f7Be035",
    "amount": "5000",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://signal-engine-production-d88d.up.railway.app/v1/gateway/execute/e2b",
    "description": "Sandboxed Python code execution via E2B",
    "outputSchema": {
      "input": {
        "type": "http",
        "method": "POST",
        "schema": {
          "type": "object",
          "required": [
            "code"
          ],
          "properties": {
            "code": {
              "type": "string",
              "description": "Python code to execute"
            },
            "timeout": {
              "type": "integer",
              "default": 30,
              "description": "Max execution seconds (capped at 60)"
            },
            "language": {
              "type": "string",
              "default": "python"
            }
          }
        }
      },
      "output": {
        "type": "json",
        "example": {
          "error": null,
          "stderr": [],
          "stdout": [
            "4\n"
          ]
        }
      }
    },
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "POST",
        "schema": {
          "type": "object",
          "required": [
            "code"
          ],
          "properties": {
            "code": {
              "type": "string",
              "description": "Python code to execute"
            },
            "timeout": {
              "type": "integer",
              "default": 30,
              "description": "Max execution seconds (capped at 60)"
            },
            "language": {
              "type": "string",
              "default": "python"
            }
          }
        }
      },
      "output": {
        "type": "json",
        "example": {
          "error": null,
          "stderr": [],
          "stdout": [
            "4\n"
          ]
        }
      }
    },
    "schema": {
      "output": {
        "required": [
          "stdout",
          "stderr"
        ],
        "properties": {
          "error": {
            "type": "string",
            "nullable": true
          },
          "stderr": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "stdout": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-07-24 13:18Z
Last indexed by Roundhouse
2026-08-23 13:10Z
Last enriched (probe, favicon, geo)
2026-09-11 01:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 405
Report

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.

Open skill.md
Show 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/execute/e2b, 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.