OpenRouter via Locus x402

x402

OpenRouter via Locus x402 is a paid API for AI agents from openrouter.x402.paywithlocus.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).

Routes chat completion requests to hundreds of LLMs (Anthropic, OpenAI, Google, Meta, and more) through a single OpenAI-compatible API endpoint with micropayment billing via x402.

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Unified LLM gateway — one OpenAI-compatible API routing to hundreds of models from Anthropic, OpenAI, Google, Meta, and more.

Output

Returns a JSON object containing the LLM chat completion response nested under 'data', along with payment metadata showing settled and authorized USDC amounts, a unique request ID, and a status URL for tracking the request. The 'data' field follows the standard OpenAI chat completion response format.

Example use cases

Multi-model comparison for research

“Send the same prompt — 'Summarize the pros and cons of nuclear energy in 3 bullet points' — to both google/gemini-2.5-flash and openai/gpt-oss-120b via the OpenRouter gateway, with max 512 tokens each, so I can compare the outputs.”

Customer support agent with Claude

“My support bot needs to reply to a customer message. Route it through OpenRouter to anthropic/claude-haiku-4.5 with max 300 tokens and a system prompt that says 'You are a friendly customer support agent for a SaaS product': user message is 'How do I reset my password?'”

Cost-controlled creative writing task

“Use the OpenRouter gateway to generate a short 200-word horror story using meta/llama-3-70b-instruct, set temperature to 0.9 and cap it at 400 output tokens so I keep the cost predictable.”

Technical details

Endpoint

POSThttps://openrouter.x402.paywithlocus.com/openrouter/chat?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need access to multiple LLM providers through a single OpenAI-compatible interface without managing separate API keys, especially when pay-per-call micropayment billing via x402 is preferred over subscription plans. Ideal for agents that need to dynamically route to different models (e.g. cheapest for simple tasks, most capable for complex ones) or compare outputs across providers. Prefer this over direct provider APIs when you want unified billing in USDC and a single integration point.

Side effects

Invalid or unsupported model ID returns an error — use provider-prefixed IDs like 'anthropic/claude-sonnet-5'
Missing max_tokens field causes rejection since it's required for x402 payment authorization ceilings
Insufficient USDC balance or failed x402 payment authorization blocks the request
Malformed messages array (wrong role values or missing content) returns a validation error
Exceeding the model's context window with the messages array causes a context length error
Network timeout if the upstream model provider is slow or unavailable

Input

Schema · Request body

Field	Type	Description
model	string
messages	array
max_tokens	number
temperature	number

Output

Schema · Response

{
  "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
  }
}

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How this service works

Unified LLM gateway — one OpenAI-compatible API routing to hundreds of models from Anthropic, OpenAI, Google, Meta, and more.

Output

Example use cases

Multi-model comparison for research

Customer support agent with Claude

Cost-controlled creative writing task

“Use the OpenRouter gateway to generate a short 200-word horror story using meta/llama-3-70b-instruct, set temperature to 0.9 and cap it at 400 output tokens so I keep the cost predictable.”

Technical details

Endpoint

POSThttps://openrouter.x402.paywithlocus.com/openrouter/chat?utm_source=zero.xyz

When to prefer

Side effects

Invalid or unsupported model ID returns an error — use provider-prefixed IDs like 'anthropic/claude-sonnet-5'
Missing max_tokens field causes rejection since it's required for x402 payment authorization ceilings
Insufficient USDC balance or failed x402 payment authorization blocks the request
Malformed messages array (wrong role values or missing content) returns a validation error
Exceeding the model's context window with the messages array causes a context length error
Network timeout if the upstream model provider is slow or unavailable

Input

Schema · Request body

Field	Type	Description
model	string
messages	array
max_tokens	number
temperature	number

Output

Schema · Response

{
  "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
  }
}