# AI tools for “API Development”

1,687 matching tools; showing 24, ranked by relevance.

Filters: `group=coding-development`

Related categories: [ai-api](https://openaitools.app/category/ai-api.md)

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Why it matched | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 121 | [Trestle IQ](https://openaitools.app/tool/trestleiq-com) | 20,623 | -10.4% | Free Trial, Contact for Pricing | Identity data APIs for phone verification, validation, and enrichment | category: ai-api; semantic match | [.md](https://openaitools.app/tool/trestleiq-com.md) |
| 122 | [Salesforce Agentforce (formerly Einstein)](https://openaitools.app/tool/salesforce-einstein) | 111,910,743 | +2.2% | Freemium | Autonomous enterprise AI agents and CRM intelligence powered by Salesforce Data 360 and Atlas. | keywords 56% | [.md](https://openaitools.app/tool/salesforce-einstein.md) |
| 123 | [Runway](https://openaitools.app/tool/runwayml) | 7,498,396 | +16.9% | Freemium, Paid, Contact for Pricing | Generative video, image, and audio tools built on frontier AI research | category: ai-api | [.md](https://openaitools.app/tool/runwayml.md) |
| 124 | [BuildShip](https://openaitools.app/tool/buildship) | 37,111 | -20% | Freemium | AI-powered visual workflow builder for backend APIs and automations | category: ai-api; semantic match | [.md](https://openaitools.app/tool/buildship.md) |
| 125 | [Semantic Scholar](https://openaitools.app/tool/semantic-scholar) | 8,198,672 | +5.8% | Free | A free, AI-powered academic search engine for 240M+ papers across every scientific field | category: ai-api | [.md](https://openaitools.app/tool/semantic-scholar.md) |
| 126 | [Best API (Beat API)](https://openaitools.app/tool/beat-api) | 4,847 | -18% | Paid | One OpenAI-compatible endpoint for OpenAI, Claude and Gemini models | category: ai-api; semantic match | [.md](https://openaitools.app/tool/beat-api.md) |
| 127 | [Logic](https://openaitools.app/tool/logic-effortless-operational-magic) | 7,738 | -31% | Freemium, Paid, Contact for Pricing | Write a spec, ship a production agent API | category: ai-api; semantic match | [.md](https://openaitools.app/tool/logic-effortless-operational-magic.md) |
| 128 | [Vaquill AI](https://openaitools.app/tool/vaquill-ai) | 25,554 | -36.7% | Free Trial, Contact for Pricing | The open API for US primary law, with a source link on every section | category: ai-api; semantic match | [.md](https://openaitools.app/tool/vaquill-ai.md) |
| 129 | [Manifest](https://openaitools.app/tool/manifest) | 54,135 | -23% | Free | The open-source LLM gateway that fixes your agents' requests on the fly | category: ai-api; semantic match | [.md](https://openaitools.app/tool/manifest.md) |
| 130 | [BytePlus](https://openaitools.app/tool/byteplus) | 3,036,127 | -30% | Freemium, Paid | AI-native cloud for building and scaling enterprise AI | category: ai-api | [.md](https://openaitools.app/tool/byteplus.md) |
| 131 | [Composio MCP](https://openaitools.app/tool/composio-mcp) | 2,782,603 | +22.8% | Freemium, Contact for Pricing | One managed MCP endpoint for 1,700+ apps in Claude, ChatGPT, Codex, and Cursor | category: ai-api; semantic match | [.md](https://openaitools.app/tool/composio-mcp.md) |
| 132 | [SmythOS](https://openaitools.app/tool/smythos) | 45,165 | -22.3% | Freemium, Paid, Contact for Pricing | Build, run and manage AI agents — visually or in code | category: ai-api; keywords 100% | [.md](https://openaitools.app/tool/smythos.md) |
| 133 | [HumanLayer](https://openaitools.app/tool/humanlayer) | 63,865 | -33.4% | Freemium | A multiplayer control plane for AI coding agents | category: ai-api; keywords 100% | [.md](https://openaitools.app/tool/humanlayer.md) |
| 134 | [Dropbox Sign (HelloSign)](https://openaitools.app/tool/hellosign) | 4,339,818 | -2.2% | Free Trial, Paid, Contact for Pricing | Electronic signatures and agreement workflows built into Dropbox | category: ai-api | [.md](https://openaitools.app/tool/hellosign.md) |
| 135 | [HeyGen](https://openaitools.app/tool/heygen) | 7,000,070 | +9.4% | Freemium | Turn scripts into studio-quality AI avatar videos in minutes | category: ai-api | [.md](https://openaitools.app/tool/heygen.md) |
| 136 | [ManagePrompt](https://openaitools.app/tool/manageprompt) | 233 | 0% | Open Source, Free | Capture and inspect every LLM API call from a local web UI | category: ai-api; keywords 100%; semantic match | [.md](https://openaitools.app/tool/manageprompt.md) |
| 137 | [AutoContent API](https://openaitools.app/tool/autocontent-api) | 14,423 | -19.8% | Paid | One REST API that turns any source into podcasts, videos, slides and reports | category: ai-api; semantic match | [.md](https://openaitools.app/tool/autocontent-api.md) |
| 138 | [boat](https://openaitools.app/tool/boat) | 66,870 | +520.8% | Free Trial, Paid | Persistent Ubuntu cloud VMs built for AI agent factories | category: ai-api; keywords 100% | [.md](https://openaitools.app/tool/boat.md) |
| 139 | [Webfuse](https://openaitools.app/tool/webfuse) | 54,641 | +8.8% | Contact for Pricing | Give AI agents real hands and eyes on any live web app | category: ai-api; semantic match | [.md](https://openaitools.app/tool/webfuse.md) |
| 140 | [You.com](https://openaitools.app/tool/you) | 948,349 | +7% | Freemium | Search and inference APIs that give AI models real-time web data | semantic match | [.md](https://openaitools.app/tool/you.md) |
| 141 | [DataCamp](https://openaitools.app/tool/datacamp-com) | 6,237,230 | -0.4% | Freemium | Interactive courses for data science, AI and analytics skills | category: ai-api | [.md](https://openaitools.app/tool/datacamp-com.md) |
| 142 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | AI grammar, spelling and style checker for 30+ languages | category: ai-api | [.md](https://openaitools.app/tool/languagetool.md) |
| 143 | [Apify](https://openaitools.app/tool/apify) | 4,147,762 | +3.9% | Freemium, Contact for Pricing | Run thousands of ready-made web scrapers and AI agents from one cloud platform | category: ai-api | [.md](https://openaitools.app/tool/apify.md) |
| 144 | [fastn: Composable Integration Middleware for SaaS](https://openaitools.app/tool/fastn-ai-composable-middleware) | 5,143 | -1.6% | Contact for Pricing | Embed a full integrations catalog inside your product - one widget, ones schema, agents that keep it running | category: ai-api; semantic match | [.md](https://openaitools.app/tool/fastn-ai-composable-middleware.md) |

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