Elixir Lint API

Elixir lint / debug kit: POST {code}, get the bugs back with line numbers. Deterministic static analysis — code is parsed, never executed, no AI. Catches unbalanced do/end and brackets, missing do, 'return', '+' string concat, trailing commas, field assignment, = vs == in conditions and guards, block-scoped rebinding (the classic), charlist vs String mixups, unused variables. Errors, warnings and hints with fixes. Max 128 KB.

Parameters

Example request

curl -X POST "https://api.webbersites.com/api/lint/elixir" \
  -H "Content-Type: application/json" \
  -d '{"code":"def grade(s) do\n  result = \"fail\"\n  if s > 60 do\n    result = \"pass\"\n  end\n  result\nend"}'
# first call returns 402 + payment requirements; an x402 client pays and retries automatically

Example response

{
    "language": "elixir",
    "syntax": {
        "ok": true,
        "errors": []
    },
    "issues": [
        {
            "line": 4,
            "severity": "warning",
            "rule": "scope/rebind-in-block",
            "message": "'result = ...' inside this block does not change 'result' outside it (first bound on line 2)",
            "hint": "bind the block's result instead: result = if ... do ... else ... end"
        }
    ],
    "counts": {
        "error": 0,
        "warning": 1,
        "info": 0
    },
    "verdict": "warnings"
}

How payment works

There is no signup and no API key. Call the endpoint; it replies 402 Payment Required with machine-readable payment requirements. Your client signs a USDC transfer authorization (EIP-3009, gasless) and retries with the X-PAYMENT header — @x402/fetch does this automatically. See the overview for a working snippet.