APIStack - The ultimate API marketplace

What it does

Access 100+ production REST APIs and Model Context Protocol (MCP) servers for AI agents. Enterprise API marketplace with real-time testing, usage analytics, and seamless ChatGPT/Claude integration. Free tier available.

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  API to MCPJun 2026 · apitomcp.ai · ▲195

  Turn any API into an MCP server for AI agents

• TB
  Tabstack – Browser infrastructure for AI agents (by Mozilla)Jan 2026 · ▲130

  Hi HN, My team and I are building Tabstack to handle the "web layer" for AI agents. Launch Post: https://tabstack.ai/blog/intro-browsing-infrastructure-ai-ag... Maintaining a complex infrastructure stack for web browsing is one of the biggest bottlenecks in building reliable agents. You start with a simple fetch, but quickly end up managing a complex stack of proxies, handling client-side hydration, and debugging brittle selectors. and writing custom parsing logic for every site. Tabstack is an API that abstracts that infrastructure. You send a URL and an intent; we…

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  API Hub2025 · ▲131

  Your central hub for powerful MCP and API solutions

• WM
  We made an MCP Server so Cursor can build things from REST API docs2025 · npmjs.com · ▲102
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  Higress MCP Marketplace2025 · ▲121

  Global APIs as MCP powered by AI Gateway

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  BotStacks2023 · ▲91

  Build and launch AI assistants with LLM integrations

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  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 18d ago · simedw.com

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  Astute▲585

  Automate your B2B brand going viral, with new media creators

  AI · 19d ago · company-app.joinastute.com

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  Grok Bot▲547

  AI teammates that you can give real work to

  AI · 26d ago · x.ai

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  Needle2: 14MB agentic LLM for phones, wearables, smart home and robots▲537

  Hey HN, Henry from Cactus here! We previously released Cactus Needle, a 14MB agentic LLM for tool call, device use, and structured extraction for phones, wearables, smart homes, small robots and microcontrollers. We got really great feedback here, and have now incorporated the suggestions to release Needle 2. The whole model is a single 14MB binary that runs a full session in 28MB of RAM; 45m parameters at 2bit compression. Needle hits 500 tokens/sec decode speed on a Raspberry Pi 5, sits between 400-1,500 tokens/sec on VR devices like Meta Quest 3S and Apple Vision Pro, and ranges…

  AI · 27d ago · cactuscompute.com

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  Monid▲475

  One wallet, every paid tool your agent needs

  AI · 7d ago · monid.ai

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  Clara AI SDR▲460

  Turn website visitors into qualified pipeline

  AI · 20d ago · clarasdr.ai

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  Guideflow▲1,341

  The AI demo automation platform for SaaS

  AI · Nov 2025 · guideflow.com

• IB
  I built a synth for my daughter▲1,278

  Life & fun · Nov 2025 · bitsnpieces.dev

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  Welltory▲1,030

  Stop energy drain

  Work · Nov 2025 · welltory.com

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  Gemini 3▲1,007

  Bring any idea to life with multimodal capabilities

  AI · Nov 2025 · blog.google

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  TrustMRR▲836

  The database of verified startup revenues

  Growth · Nov 2025 · trustmrr.com

• B
  Boing▲782

  Life & fun · Nov 2025 · boing.greg.technology