Locus public pay-per-use API

Answeringour last check, 2026-09-24

1 of 1checks answered this week

565 msmedian answer time

$0.010931listed price per call

$0.010931price it asked us

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

POST https://openrouter.x402.stage.paywithlocus.com/openrouter/chat

Category	Everything else
Provider host	openrouter.x402.stage.paywithlocus.com
Networks	eip155:8453
Payment schemes	upto
Self-reported calls, 30 days	1 from 1 payers (the provider's figure, not ours)

Our checks, last 30 days

Day	Result	HTTP	Asked	Time
2026-09-24	valid payment request	402	$0.010931	565 ms

Example input (from the provider)

{
  "body": {
    "max_tokens": 256,
    "messages": [
      {
        "content": "Hello from x402",
        "role": "user"
      }
    ],
    "model": "openai/gpt-oss-20b"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": true,
          "properties": {
            "max_tokens": {
              "description": "Maximum output tokens. Required for public x402 so the authorization has a hard ceiling.",
              "type": "number"
            },
            "messages": {
              "description": "Conversation messages. Each: { role: \"system\"|\"user\"|\"assistant\", content: \"text\" } or multimodal content arrays per the OpenAI format.",
              "items": {
                "additionalProperties": true,
                "type": "object"
              },
              "type": "array"
            },
            "model": {
              "description": "Provider-prefixed model ID (e.g. 'anthropic/claude-sonnet-4.6', 'anthropic/claude-haiku-4.5', 'openai/gpt-oss-120b', 'google/gemini-2.5-flash')",
              "type": "string"
            },
            "temperature": {
              "description": "Sampling temperature (0.0\u20132.0, default 1.0)",
              "type": "number"
            }
          },
          "required": [
            "model",
            "messages",
            "max_tokens"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

This page as JSON