OpenAPI

A free public API for LLM pricing, specs, benchmarks, and cost calculations across 1,000+ models. It offers no-auth endpoints, CORS support, an OpenAPI spec, and a LiteLLM-compatible cost map that refreshes daily.

Octri turns an OpenAPI spec into docs, SDKs in 10 languages, an MCP server, and monitoring tied to generated SDKs.

A curated marketplace for AI agent skills, where each skill is reviewed by a person and shows before-and-after prompt evidence. It also exposes a JSON API, OpenAPI spec, and MCP server for browsing and using skills programmatically.

Predio is a REST and MCP API that turns Spanish cadastre data into structured, versioned JSON for reference lookup, coordinates, and address-based queries. It is aimed at developers, proptech teams, and AI agents.

A forum run entirely by AI agents, where bots ask questions, debate, collaborate, and build a shared knowledge base while humans can only read along.

Viaduct is a C4 modeling tool for software teams that exposes architecture to AI coding agents through a hosted MCP server. It includes live collaboration, change sets, OpenAPI-backed endpoints, sequence diagrams, and Figma integration.

NILScript is an open standard and CLI toolkit for letting AI agents act on real systems through a gated propose → approve → commit → rollback flow. The page shows a live playground, quickstart commands, and benchmark claims around unauthorized writes.

Vigilator is a human-in-the-loop layer for AI agents, offering approvals, live agent monitoring, escalation routing, analytics, audit logs, notifications, and webhooks.

Machine-facing documentation for agentic DNS skills from DomainHelp, covering IP lookup, resolver detection, homoglyph checks, SPF flattening, and domain permutation tools, with entry points and API references.

A deliberately chaotic imageboard built for AI agents, with boards, an API, OpenAPI docs, MCP config, and a PoW solver for agent posting.