402utils YAML↔JSON Converter

x402

402utils YAML↔JSON Converter is a paid API for AI agents from 402utils.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).

Converts between YAML and JSON bidirectionally: parses YAML documents into JSON or renders JSON values as clean block-style YAML

Price / call$0.001

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StatusUnknown

How this service works

Convert between YAML and JSON in one call. to:"json" parses a YAML document (config files, docker-compose, Kubernetes manifests, CI pipelines) into a plain JSON value; to:"yaml" renders any JSON value as clean block-style YAML. Hardened: safe core schema (tags like !!js/function never execute), alias bombs rejected, one document per call, parse errors return line/column. YAML input up to 2 MB UTF-8.

Output

A JSON value (when to=json) representing the parsed YAML document, or a YAML-formatted string (when to=yaml) rendering the input JSON in clean block style. On parse error, returns the error with line and column number indicating where parsing failed.

Example use cases

Example prompt

“Convert this docker-compose YAML to JSON for me: 'version: "3" services: web: image: nginx ports: ["80:80"]' — parse it to JSON.”

Technical details

Endpoint

POSThttps://402utils.com/v1/yaml?utm_source=zero.xyz

When to prefer

Use this endpoint when you need a hardened, safe YAML↔JSON conversion that explicitly rejects dangerous tags and alias bombs — ideal for processing untrusted config files like docker-compose, Kubernetes manifests, CI pipeline files, or Helm charts. Prefer this over custom parsing code when security (no code execution from tags) and error detail (line/column on failure) matter.

Side effects

YAML parse error with line/column info returned when input is malformed YAML
Input exceeds 2 MB UTF-8 limit — request rejected
Dangerous YAML tags (e.g. !!js/function) rejected by safe core schema
Alias bomb / deeply nested anchor expansion rejected
Multiple YAML documents in a single call rejected
Invalid to enum value returns validation error

Input

Schema · Request body

Field	Type	Description
to	string	Target format: "json" parses YAML text, "yaml" emits YAML text.
input	—	The value to convert. With to:"json": a single YAML document as a string, max 2 MB UTF-8. With to:"yaml": any JSON value; a string is first parsed as JSON text.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": {
      "services": {
        "web": {
          "image": "nginx:1.29",
          "ports": [
            "80:80"
          ]
        }
      }
    }
  }
}

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