Judge0 via Locus x402 — List Languages

x402

Judge0 via Locus x402 — List Languages is a paid API for AI agents from judge0.x402.paywithlocus.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns the list of all programming languages supported by the Judge0 code execution sandbox.

Price / call$0.005

Seller volume →—

Success—

StatusUnknown

How this service works

Locus public pay-per-use API

Output

Returns a structured payload containing the list of all programming languages supported by the Judge0 sandbox, each entry including a numeric language ID and a display name (with version), enabling the caller to look up the correct ID before submitting code for execution. The response wraps the data under a 'data' key with payment and request metadata.

Example use cases

Find language ID before code submission

“Before I run my Python 3 code, can you pull the list of supported languages from the Judge0 sandbox and tell me which language ID corresponds to Python 3?”

Explore available compiler options

“I want to know every programming language and compiler available in the Judge0 code execution environment — can you list them all for me?”

Build a language picker dropdown

“I'm building a coding playground and need the complete list of language names and their Judge0 IDs so I can populate a language selector — can you fetch that list?”

Technical details

Endpoint

POSThttps://judge0.x402.paywithlocus.com/judge0/list-languages

When to prefer

Use this endpoint when you need to discover available language IDs before submitting code to the Judge0 execution sandbox, or when building a UI that enumerates supported languages. Prefer this over hardcoding language IDs, since the supported set can evolve. This is a read-only, low-cost lookup call ideal as a prerequisite step in automated coding workflows.

Side effects

Payment failure — insufficient USDC balance or x402 payment not accepted, resulting in a 402 response
Malformed request body — missing required 'input' fields causes a 4xx validation error
Service unavailability — Judge0 backend is down, resulting in a 5xx error
Timeout — sandbox infrastructure slow to respond, causing a timeout error

Input

Schema · Request body

Field	Type	Description
inputrequired	object

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

Locus public pay-per-use API

Output

Example use cases

Find language ID before code submission

“Before I run my Python 3 code, can you pull the list of supported languages from the Judge0 sandbox and tell me which language ID corresponds to Python 3?”

Explore available compiler options

“I want to know every programming language and compiler available in the Judge0 code execution environment — can you list them all for me?”

Build a language picker dropdown

“I'm building a coding playground and need the complete list of language names and their Judge0 IDs so I can populate a language selector — can you fetch that list?”

Technical details

Endpoint

POSThttps://judge0.x402.paywithlocus.com/judge0/list-languages

When to prefer

Side effects

Payment failure — insufficient USDC balance or x402 payment not accepted, resulting in a 402 response
Malformed request body — missing required 'input' fields causes a 4xx validation error
Service unavailability — Judge0 backend is down, resulting in a 5xx error
Timeout — sandbox infrastructure slow to respond, causing a timeout error

Input

Schema · Request body

Field	Type	Description
inputrequired	object

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
  }
}