Roundhouse AI

Locus x402 Services

Locus public pay-per-use API

InferenceLiveeip155:8453Uptovia cdp
https://groq.x402.stage.paywithlocus.com/groq/chat
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$46.60
Verified settled volume
2,201 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0080
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 2026-08-30 15:24Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x3C5CBe28ECA3b96023c45D3f877da834F1C7d5fA

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.

0.008USDC≈ $0.008 USD
on Base · upto scheme

Pay 0.008 USDC on Base to 0x3C5C…7d5fA. The signed payment is good for 30 minutes.

Paid to
0x3C5C…7d5fA
USD Coin contract
0x8335…02913
Payment window
30 minutes
As published
8000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2",
      "facilitatorAddress": "0x14fDa13953Fc30428938E6BF950d036e77214e52",
      "assetTransferMethod": "permit2"
    },
    "payTo": "0x3C5CBe28ECA3b96023c45D3f877da834F1C7d5fA",
    "amount": "8000",
    "scheme": "upto",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 1800
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "model": "openai/gpt-oss-20b",
          "messages": [
            {
              "role": "user",
              "content": "Hello from x402"
            }
          ],
          "max_completion_tokens": 1
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "data": {},
          "payment": {
            "scheme": "exact",
            "settledUsdc": "0.001000",
            "authorizedMaxUsdc": "0.001000"
          },
          "request": {
            "id": "00000000-0000-4000-8000-000000000000",
            "statusUrl": "/requests/00000000-0000-4000-8000-000000000000"
          },
          "success": true
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "model",
                "messages",
                "max_completion_tokens"
              ],
              "properties": {
                "seed": {
                  "type": "number",
                  "description": "Seed for deterministic sampling"
                },
                "stop": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  },
                  "description": "Stop sequences (up to 4)"
                },
                "model": {
                  "type": "string",
                  "description": "Model or system ID. Public metered x402 supports Llama 3.1/3.3, GPT-OSS 20B/120B, Llama 4 Scout, and Qwen 3.6 27B."
                },
                "tools": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  },
                  "description": "Tool/function definitions (max 128)"
                },
                "top_p": {
                  "type": "number",
                  "description": "Nucleus sampling (0-1)"
                },
                "messages": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "additionalProperties": true
                  },
                  "description": "Conversation messages array"
                },
                "temperature": {
                  "type": "number",
                  "description": "Sampling temperature (0-2)"
                },
                "tool_choice": {
                  "type": "object",
                  "description": "Tool selection: \"auto\", \"none\", \"required\", or specific function",
                  "additionalProperties": true
                },
                "response_format": {
                  "type": "object",
                  "description": "Output format: json_object, json_schema, or text",
                  "additionalProperties": true
                },
                "reasoning_format": {
                  "type": "string",
                  "description": "Reasoning output: \"hidden\", \"raw\", or \"parsed\""
                },
                "max_completion_tokens": {
                  "type": "number",
                  "description": "Maximum output tokens. Required for x402 so the signed authorization has a hard ceiling."
                }
              },
              "additionalProperties": true
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  },
  "eip2612GasSponsoring": {
    "info": {
      "version": "1",
      "description": "The facilitator accepts EIP-2612 gasless Permit to `Permit2` canonical contract."
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "from",
        "asset",
        "spender",
        "amount",
        "nonce",
        "deadline",
        "signature",
        "version"
      ],
      "properties": {
        "from": {
          "type": "string",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "description": "The address of the sender."
        },
        "asset": {
          "type": "string",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "description": "The address of the ERC-20 token contract."
        },
        "nonce": {
          "type": "string",
          "pattern": "^[0-9]+$",
          "description": "The current nonce of the sender."
        },
        "amount": {
          "type": "string",
          "pattern": "^[0-9]+$",
          "description": "The amount to approve (uint256). Typically MaxUint."
        },
        "spender": {
          "type": "string",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "description": "The address of the spender (Canonical Permit2)."
        },
        "version": {
          "type": "string",
          "pattern": "^[0-9]+(\\.[0-9]+)*$",
          "description": "Schema version identifier."
        },
        "deadline": {
          "type": "string",
          "pattern": "^[0-9]+$",
          "description": "The timestamp at which the signature expires."
        },
        "signature": {
          "type": "string",
          "pattern": "^0x[a-fA-F0-9]+$",
          "description": "The 65-byte concatenated signature (r, s, v) as a hex string."
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-30 15:24Z
Last indexed by Roundhouse
2026-09-24 19:50Z
Last enriched (probe, favicon, geo)
2026-09-20 09:45Z
x402 version
2
Max timeout
1800s
Liveness probe
HTTP 404
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

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far. 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 Locus x402 Services 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=Locus%20x402%20Services'
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://groq.x402.stage.paywithlocus.com/groq/chat, 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.