AI & agents

OpenAPI to AI Tool Schema Converter

Convert OpenAPI JSON or YAML operations into AI-agent-friendly tool schemas with parameters, descriptions, and risk warnings.

Runs locally in your browser

OpenAPI JSON or YAML

Operations converted2

Warnings1

WarningdeleteUser: DELETE /users/{userId} may modify data. Add approval rules before exposing it to autonomous agents.

AI tool schemas

[
  {
    "name": "getUser",
    "description": "Get a user profile by ID.",
    "parameters": {
      "type": "object",
      "properties": {
        "userId": {
          "type": "string",
          "description": "User identifier."
        }
      },
      "required": [
        "userId"
      ]
    }
  },
  {
    "name": "deleteUser",
    "description": "Delete a user account.",
    "parameters": {
      "type": "object",
      "properties": {
        "userId": {
          "type": "string"
        }
      },
      "required": [
        "userId"
      ]
    }
  }
]

How to use this tool

Paste an OpenAPI JSON or YAML document.

Review converted operations, generated parameter schemas, and warnings for mutating endpoints.

Copy the generated AI tool schemas and add your own authentication, approval, and rate-limit rules before using them with an agent.

Why convert OpenAPI for agents

OpenAPI documents describe HTTP APIs, but AI agents usually need compact tool names, clear descriptions, and JSON-style parameter schemas.

Converting operations into tool definitions makes it easier to decide which endpoints are safe and useful for an assistant.

The converted output is a starting point for review, not a production security policy.

What gets converted

The converter reads `paths`, HTTP methods, operation IDs, summaries, descriptions, parameters, required path/query fields, and JSON request bodies.

It outputs an array of tool definitions with `name`, `description`, and top-level object `parameters`.

Mutating methods such as POST, PUT, PATCH, and DELETE are flagged because autonomous agents should not call them without approval boundaries.

Security review before agent use

Never expose private, admin, billing, destructive, or credential-related API operations to an agent only because they appear in OpenAPI.

Use allowlists, short-lived credentials, user confirmation, server-side authorization, and audit logs.

Remove endpoints that are not needed for the task and rewrite vague descriptions before handing schemas to a model.

Examples

Path parameter conversion

Input

GET /users/{userId}

Output

{"name":"getUser","parameters":{"type":"object","properties":{"userId":{"type":"string"}},"required":["userId"]}}

Mutating endpoint warning

The converter warns that this operation may modify data and should require explicit approval before autonomous use.

Input

DELETE /users/{userId}

FAQ

Does this call my API?

No. It only parses the OpenAPI document locally in your browser and does not make network requests.

Can I use the generated schemas directly in production?

Treat them as a draft. Review names, descriptions, authentication, authorization, approval rules, and rate limits before production use.

Does it support YAML?

Yes. You can paste OpenAPI as JSON or YAML.

Why are POST and DELETE operations warned about?

They can mutate state or delete data. Agent-accessible tools should separate read-only actions from actions that need explicit human confirmation.