claude-mods/skills/claude-api-ops/assets/output-schema.json

{
  "_comment": "Canonical structured-outputs request body for the Anthropic Messages API. Pass the `output_config` object below in client.messages.create(...). This is the current `output_config.format` shape — NOT the deprecated top-level `output_format` param. Adapt `schema.properties` and `required` to your data; keep `additionalProperties: false` so the model can't add stray keys. Supported on Opus 4.8/4.7/4.6/4.5, Sonnet 4.6/4.5, Haiku 4.5 — NOT Fable 5 (use system-prompt instructions or strict tool use there).",
  "model": "claude-opus-4-8",
  "max_tokens": 1024,
  "messages": [
    {
      "role": "user",
      "content": "Extract the contact: Jane Doe (jane@example.com) wants the Enterprise plan and asked for a demo."
    }
  ],
  "output_config": {
    "format": {
      "type": "json_schema",
      "schema": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string",
            "description": "Full name of the contact"
          },
          "email": {
            "type": "string",
            "format": "email"
          },
          "plan": {
            "type": "string",
            "enum": ["Free", "Pro", "Enterprise"]
          },
          "demo_requested": {
            "type": "boolean",
            "description": "Whether the contact asked for a demo"
          }
        },
        "required": ["name", "email", "plan", "demo_requested"],
        "additionalProperties": false
      }
    }
  }
}