AI agent tools for openapi
Short answer: Our top pick for openapi: Open WebUI, with the highest AgentPick Score (92/100) among tools tagged "openapi". Runners-up: typia (77) and cli-printing-press (76). Compare what each does, its license and how recently it was updated below.
| # | Tool | What it does | Score | Stars | License | Updated |
|---|---|---|---|---|---|---|
| #1 | Open WebUI | User-friendly AI Interface (Supports Ollama, OpenAI API, ...) | 92/100 | ★ 156k | See repo | 14 Oct 2026 |
| #2 | typia | Super-fast/easy runtime validators and serializers via transformation | 77/100 | ★ 5.9k | MIT | 13 Oct 2026 |
| #3 | cli-printing-press | Every API has a secret identity. This finds it, absorbs every feature from every competing tool, then builds the GOAT CLI — designed for AI agents fir… | 76/100 | ★ 4.8k | MIT | 13 Oct 2026 |
| #4 | Douyin_TikTok_Download_API | 🚀 抖音、TikTok 数据采集与无水印视频下载 API，自托管，支持 MCP 调用与 Docker 一键部署。| Self-hosted TikTok & Douyin scraper and no-watermark video downloader — async REST API, MCP… | 75/100 | ★ 21k | Apache-2.0 | 2 Oct 2026 |
| #5 | kubb | 🧡 Turn your API spec into type-safe code. Generate TypeScript types, API clients, hooks, validators and mocks from a spec such as OpenAPI. | 74/100 | ★ 1.8k | MIT | 14 Oct 2026 |
| #6 | docmd | Documentation compiler for humans and machines. One Markdown source to website, search, AI context, and knowledge formats together. | 71/100 | ★ 2.5k | MIT | 14 Oct 2026 |
| #7 | sourcey | Precision documentation from OpenAPI, MCP, Doxygen, and Markdown guides. Static HTML you own. | 70/100 | ★ 1.4k | AGPL-3.0 | 12 Oct 2026 |
| #8 | octo-cli | Metadata-driven CLI for AI Agent Bots — 48 operations across 7 domains, structured JSON envelope I/O, zero interactive prompts. | 66/100 | ★ 920 | Apache-2.0 | 13 Oct 2026 |
| #9 | reverse-api-engineer | The agent that turns websites into APIs! | 65/100 | ★ 1.4k | MIT | 23 Sept 2026 |
| #10 | ProxmoxMCP-Plus | Use MCP and OpenAPI to safely control Proxmox VE VMs, LXCs, backups, and snapshots from LLMs and AI agents. | 64/100 | ★ 590 | MIT | 12 Oct 2026 |
| #11 | gram | Securely scale AI usage across your organization. A single stack to Connect, Secure, Observe and Distribute agents, MCPs, and Skills within your compa… | 64/100 | ★ 273 | AGPL-3.0 | 14 Oct 2026 |
| #12 | fusio | Self-Hosted API Management for Builders | 61/100 | ★ 2.1k | Apache-2.0 | 7 Oct 2026 |
| #13 | mcp2cli | Turn any MCP, OpenAPI, or GraphQL server into a CLI — at runtime, with zero codegen | 48/100 | ★ 2.4k | MIT | 12 Oct 2026 |
| #14 | mcpo | A simple, secure MCP-to-OpenAPI proxy server | 41/100 | ★ 4.4k | MIT | 17 May 2026 |
| #15 | open-trading-api | Korea Investment & Securities Open API Github | 40/100 | ★ 1.6k | See repo | 14 Oct 2026 |
| #16 | fastapi_mcp | Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth! | 38/100 | ★ 12k | MIT | 24 Nov 2025 |
| #17 | Integuru | The first AI agent that builds permissionless integrations through reverse engineering platforms' internal APIs. | 35/100 | ★ 4.8k | AGPL-3.0 | 24 Jun 2026 |
| #18 | antigravity-link-extension | Mobile companion for Google's Antigravity IDE. Mirror AI sessions on your phone, send messages, stop generation, automate via 9 MCP tools or OpenAPI. | 35/100 | ★ 220 | MIT | 4 Jun 2026 |
| #19 | mcpcan | MCPCAN is a centralized management platform for MCP services. It deploys each MCP service using a container deployment method. The platform supports c… | 21/100 | ★ 728 | See repo | 3 Apr 2026 |
Source: each project's public GitHub repository (description, stars, license, last push). Listed tools aren't tested or ranked by AgentPick.
How to choose
- Grant the narrowest permissions the server allows.
- Check whether it runs locally or calls a remote service.
- Prefer servers listed in the official MCP registry.
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