YAML Validator
DataValidate YAML syntax with detailed error messages and stats
Paste a Kubernetes manifest or GitHub Actions workflow before committing it and this checks that it actually parses, with detailed error messages that pinpoint an indentation mistake or invalid character rather than a generic parser complaint, since YAML's whitespace sensitivity makes that kind of specificity genuinely useful. A stats panel shows key counts and nesting depth as a quick structural sanity check on a large config file. It parses standard YAML 1.1/1.2 features including anchors, aliases, and merge keys correctly, but it only validates syntax, not schema correctness for a specific tool's format: a Kubernetes manifest missing a required field will still pass here and needs `kubectl apply --dry-run` or an equivalent tool-specific check instead. If this tool flags an error your application doesn't, it's worth checking which YAML parser your app actually uses, since implementations like PyYAML, Ruby's Psych, and various JS libraries diverge on edge cases. Nothing is sent to a server.
How to use YAML Validator
- 1.Paste a YAML file (like a Kubernetes manifest or GitHub Actions workflow) to check it parses correctly before committing it.
- 2.Use the detailed error messages to pinpoint an indentation mistake or invalid character that a generic parser error wouldn't explain clearly.
- 3.Check the stats panel to see key counts and nesting depth as a quick sanity check on a large config file's structure.
Frequently asked questions
Use via API, SDK, or MCP
cURL# Free: 1,000 req/day · Pro: 10,000 req/day
curl -X POST https://api.utilix.tech/v1/tools/yaml-validate \
-H "Authorization: Bearer utx_live_..." \
-H "Content-Type: application/json" \
-d '{"input": "name: Alice\nage: 30\nroles:\n - admin"}'Get an API key from your dashboard · Full API docs →