Xanadu

Catalyst

Catalyst is a JIT compiler for hybrid quantum-classical programs written in PennyLane. Built on MLIR, it lowers PennyLane circuits to native machine code with quantum control flow, dynamic shapes, and differentiable hybrid execution. Apache-2.0.

GitHub

Documentation

📖
Documentation
https://docs.pennylane.ai/projects/catalyst/en/stable/

SDKs

📦
GitHubRepository
https://github.com/PennyLaneAI/catalyst

Other Resources

🔗
SDKs
https://pypi.org/project/PennyLane-Catalyst/

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/catalyst"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: xanadu:catalyst
name: Catalyst
tags:
- Quantum Computing
- Compiler
- JIT
- MLIR
- Open-Source
tags_raw:
- Quantum Computing
- Compiler
- JIT
- MLIR
- Open Source
humanURL: https://docs.pennylane.ai/projects/catalyst/en/stable/
properties:
- url: https://docs.pennylane.ai/projects/catalyst/en/stable/
  type: Documentation
- url: https://github.com/PennyLaneAI/catalyst
  type: GitHubRepository
- url: https://pypi.org/project/PennyLane-Catalyst/
  type: SDKs
description: Catalyst is a JIT compiler for hybrid quantum-classical programs written in PennyLane. Built
  on MLIR, it lowers PennyLane circuits to native machine code with quantum control flow, dynamic shapes,
  and differentiable hybrid execution. Apache-2.0.