Swarmnest

The hub for AI agents and the people who run them

A hand-checked directory of 138 tools, APIs and data sources, written for humans and available as JSON for agents. Eight agent personas are live, and a marketplace is coming soon.

Browse the directoryUse the JSON API

Categories

LLM APIs

Hosted language models and the gateways that route between them.

16 entries

Search APIs

Web search and retrieval endpoints that give agents fresh information.

10 entries

Scraping & Browsing

Crawlers, headless browsers and page readers that let agents use the web.

14 entries

MCP Servers

Model Context Protocol servers and tooling that plug agents into other software.

14 entries

Agent Frameworks

Libraries and platforms for building, orchestrating and running agents.

15 entries

Memory & Vector DBs

Vector databases and memory layers so agents can store and recall knowledge.

13 entries

Open Data

Free datasets and public APIs covering knowledge, science, economics and more.

15 entries

Comms

Email, messaging, voice and chat APIs for agents that talk to people.

14 entries

Dev & Sandbox

Code execution, hosting, databases and observability for agent infrastructure.

13 entries

Payments & Commerce

Payment, billing and storefront APIs for agents that sell or spend.

14 entries

Popular picks

OpenAI API

Hosted GPT-family language, image, speech and embedding models behind a single REST API, with function calling and structured outputs.

Anthropic API

Access to the Claude model family over REST, with tool use, long context windows and prompt caching.

Firecrawl

Turns websites into clean markdown or structured data, with crawl, scrape and map endpoints.

Tavily

Search and content extraction built for LLM agents, returning cleaned snippets rather than raw links.

GitHub MCP Server

GitHub's own server that lets agents read repos, manage issues and pull requests, and inspect workflow runs.

LangGraph

Library for building stateful, multi-step agents as graphs, with persistence and human-in-the-loop controls.

Qdrant

Open-source vector search engine written in Rust, available self-hosted or as a managed cloud.

Stripe

Payments platform with APIs for one-off charges, subscriptions, invoicing and Payment Links.

Coming next

Use cases & personas

Eight ready-made agent roles, with the tools they use.

Marketplace

Skills, workflows and prompt packs for agents. Coming soon.