# AI tools for “OpenAPI to function call”

21 matching tools; showing 21, ranked by relevance.

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Composio](https://openaitools.app/tool/composio) | 2,782,603 | +22.8% | Freemium, Contact for Pricing | Give your AI agents secure, authenticated access to 1,700+ apps | keywords 55% | [.md](https://openaitools.app/tool/composio.md) |
| 2 | [Fireworks](https://openaitools.app/tool/fireworks-ai) | 659,687 | +6% | Contact for Pricing | Run, ensemble and train open AI models as your own specialized intelligence | keywords 55% | [.md](https://openaitools.app/tool/fireworks-ai.md) |
| 3 | [EasyFunctionCall](https://openaitools.app/tool/easyfunctioncall) | 0 | 0% | Freemium | Turn OpenAPI and Swagger specs into AI-ready function calls | keywords 100%; semantic match | [.md](https://openaitools.app/tool/easyfunctioncall.md) |
| 4 | [GRID](https://openaitools.app/tool/grid-2-0) | 29,800 | -5.3% | Free Evaluation License, Contact for Commercial Pricing | The spreadsheet engine built for AI agents | keywords 55% | [.md](https://openaitools.app/tool/grid-2-0.md) |
| 5 | [FlexAI](https://openaitools.app/tool/flexai) | 44,314 | +17.9% | Freemium, Paid, Contact for Pricing | Build, run and scale AI, from open models to governed agents | keywords 55% | [.md](https://openaitools.app/tool/flexai.md) |
| 6 | [Speko](https://openaitools.app/tool/speko) | 20,954 | -7.9% | Paid, Contact for Pricing | The provider-neutral router and platform for voice AI agents | keywords 64% | [.md](https://openaitools.app/tool/speko.md) |
| 7 | [reAPI](https://openaitools.app/tool/reapi) | 20,221 | +888.3% | Paid | One OpenAI-compatible API across image, video, chat, music and code models | keywords 55% | [.md](https://openaitools.app/tool/reapi.md) |
| 8 | [Vivgrid](https://openaitools.app/tool/vivgrid) | 3,743 | +71.1% | Freemium | Managed Skills platform for shipping production AI agents | keywords 55% | [.md](https://openaitools.app/tool/vivgrid.md) |
| 9 | [GPT-trainer](https://openaitools.app/tool/gpt-trainer) | 9,357 | -23.2% | Freemium, Paid | No-code AI agents for customer support, sales and internal ops | keywords 55% | [.md](https://openaitools.app/tool/gpt-trainer.md) |
| 10 | [Toolhouse](https://openaitools.app/tool/toolhouse) | 4,326 | -17.4% | Freemium | Repetitive tasks, done for you by AI workers | keywords 55% | [.md](https://openaitools.app/tool/toolhouse.md) |
| 11 | [Agents-Flex](https://openaitools.app/tool/agents-flex) | 5,088 | +202.3% | Free / Open Source | Open-source Java framework for building AI agents and LLM apps | keywords 55% | [.md](https://openaitools.app/tool/agents-flex.md) |
| 12 | [Lamini](https://openaitools.app/tool/lamini) | 4,158 | +0.3% | Freemium, Contact for Pricing | Build and control custom LLMs with enterprise-grade accuracy | keywords 55% | [.md](https://openaitools.app/tool/lamini.md) |
| 13 | [Superflows](https://openaitools.app/tool/superflows) | 4,103 | -1.2% | Freemium, Paid, Contact for Pricing | Launch your product's AI assistant without an AI team | keywords 64% | [.md](https://openaitools.app/tool/superflows.md) |
| 14 | [Aspen — Free API Testing for macOS](https://openaitools.app/tool/aspen-api-testing-for-macos) | 0 | -100% | Free | Test REST APIs locally on Mac with an AI companion that writes your integration code | keywords 64% | [.md](https://openaitools.app/tool/aspen-api-testing-for-macos.md) |
| 15 | [OnAPI](https://openaitools.app/tool/onapi) | 0 | 0% | Paid | One AI API key for text, image, video, and code models | keywords 55% | [.md](https://openaitools.app/tool/onapi.md) |
| 16 | [Owlbot](https://openaitools.app/tool/owlbot) | 0 | 0% | Paid | Train a no-code AI agent on your business docs and put it on support, sales and lead capture duty | keywords 55% | [.md](https://openaitools.app/tool/owlbot.md) |
| 17 | [ResponseCX](https://openaitools.app/tool/response-cx) | 0 | 0% | Paid | Pay-per-resolution AI agents for ecommerce customer service | keywords 55% | [.md](https://openaitools.app/tool/response-cx.md) |
| 18 | [HybridAI](https://openaitools.app/tool/hybridai) | 0 | -100% | Freemium, Paid | AI agents that work directly on your CRM and ERP data | keywords 55% | [.md](https://openaitools.app/tool/hybridai.md) |
| 19 | [Scoopika](https://openaitools.app/tool/scoopika) | 0 | 0% | Freemium | Build reliable multimodal LLM-powered apps, 10x faster | keywords 55% | [.md](https://openaitools.app/tool/scoopika.md) |
| 20 | [Numerous.ai](https://openaitools.app/tool/numerous-ai) | 0 | — | Freemium | ChatGPT inside Google Sheets and Excel — write formulas, classify data, and draft copy in bulk with a simple function. | keywords 55% | [.md](https://openaitools.app/tool/numerous-ai.md) |
| 21 | [ApiFlux](https://openaitools.app/tool/apiflux) | 0 | 0% | Paid | One OpenAI-compatible key for 100+ frontier models | keywords 55% | [.md](https://openaitools.app/tool/apiflux.md) |

For programmatic access use `https://openaitools.app/api/tools?q=…` or MCP `https://openaitools.app/api/mcp`.

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Source: https://openaitools.app/?q=OpenAPI%20to%20function%20call

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