Validate

Check whether a string is valid for a given format — from cron expressions to JSON Schema to semver.

POST /api/validate

Request

Field	Type	Required	Description
type	string	Yes	json, yaml, toml, cron, json_schema, regex, semver, email, url
input	string	Yes	The string to validate
options	object	No	Type-specific options

Response

Field	Type	Description
valid	boolean	Whether the input passed validation
description	string	Human-readable explanation
errors	array	Validation errors — each has message, and optionally line, column, path
details	object	Type-specific extra info

Examples

Cron expression

curl -X POST https://morso.dev/api/validate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type": "cron", "input": "*/5 * * * *"}'

{
  "valid": true,
  "description": "Every 5 minutes",
  "errors": []
}

Invalid YAML

curl -X POST https://morso.dev/api/validate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type": "yaml", "input": "key: value\n  bad indent"}'

{
  "valid": false,
  "description": "Invalid YAML",
  "errors": [
    {
      "message": "mapping values are not allowed in this context",
      "line": 2,
      "column": 6
    }
  ]
}

Semver

curl -X POST https://morso.dev/api/validate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type": "semver", "input": "1.2.3-beta.1"}'

{
  "valid": true,
  "description": "Valid semantic version",
  "errors": []
}

Invalid email

curl -X POST https://morso.dev/api/validate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type": "email", "input": "not-an-email@"}'

{
  "valid": false,
  "description": "Invalid email address",
  "errors": [
    {
      "message": "missing domain after @"
    }
  ]
}