Can I use my own OpenAPI spec instead?

Yes, the same HAPI CLI works with any valid OpenAPI document; this instance simply uses the Petstore spec.

Is authentication required?

The underlying Petstore API uses its built-in security model; HAPI passes those controls through automatically.

Petstore MCP Server

Verified

Swagger Petstore API v1.0.27 exposed as MCP tools for testing.

MCP ServerOtherRemote (streamable-http) 8

View on GitHub

Updated 2026-06-16

What is the Petstore MCP Server MCP server?

HAPI MCP automatically converts the Petstore OpenAPI specification into usable MCP tools while preserving the original API behavior, authentication model, and validation rules. The resulting server runs over streamable-http transport and can be consumed by any MCP-compatible client including ChatGPT, Claude, or custom agents.

Because the Petstore API is a well-known reference implementation, this MCP server is ideal for quick experiments, agent development, and verifying that OpenAPI-driven MCP exposure works as expected without building new business logic.

Install & connect

Add this to your MCP client config. Pick your client below and copy.

{
  "mcpServers": {
    "petstore": {
      "url": "https://petstore.run.mcp.com.ai/mcp"
    }
  }
}

Example prompts

Once connected, try asking your AI client:

“List all available pets in the store

“Add a new pet named 'Fluffy' with category 'Dogs'

“Find pets by status 'sold' and show their names

“Update the pet with id 5 to have status 'available'

Security & permissions

Connects via streamable-http to the remote HAPI-powered server; inherits Petstore API permissions and rate limits with no local secrets or API keys required.

What you can do with Petstore MCP Server

Agent prototyping

Quickly connect AI agents to a realistic REST API to test tool-calling flows and multi-step orchestration.

MCP client testing

Validate MCP client compatibility and streaming behavior using the familiar Petstore endpoints.

OpenAPI-to-MCP demos

Showcase how existing Swagger specs become AI-ready tools in minutes with zero code changes.

How to use Petstore MCP Server

1Install the HAPI CLI from the latest GitHub release.
2Run the single command that points to the Petstore swagger.json with --headless flag.
3The resulting MCP server becomes available over streamable-http.
4Connect any MCP client to the published endpoint.
5Begin issuing natural-language requests against the Petstore tools.