FindAPI for AI Systems and Developer Agents

FindAPI is a searchable API directory for developers and AI systems. It helps users and agents discover, compare, and retrieve structured information about public APIs by category, pricing, authentication type, tags, and use case.

FindAPI supports both human browsing and machine access through:

a public website
a REST API
an OpenAPI spec
an MCP endpoint

What FindAPI Is

FindAPI is an API discovery and comparison platform. It helps:

developers find public APIs
AI agents search APIs by filters and constraints
tools retrieve structured API metadata
technical evaluators compare APIs by pricing, auth model, category, and tags

What FindAPI Is Not

an API gateway for calling third-party APIs directly
a replacement for official provider documentation
a hosted execution layer for external APIs
an authentication broker for third-party services

Best For

API discovery
API comparison
developer research workflows
agent-assisted tool selection
structured metadata retrieval for public APIs

Core Capabilities

Search public APIs by keyword
Filter APIs by category
Filter APIs by tags
Filter APIs by pricing model
Filter APIs by authentication type
Retrieve a single API profile by slug
Browse categories and tags
Access machine-readable schema through OpenAPI
Use MCP tools for agent workflows

Key Resources

Resource	URL	Purpose
Website	`https://www.findapi.dev`	Human-facing API directory
REST API	`https://www.findapi.dev/api/v1`	Machine-readable API access
OpenAPI Spec	`https://www.findapi.dev/api/openapi.json`	Schema and endpoint definitions
MCP Endpoint	`https://www.findapi.dev/api/mcp`	Tool-based agent access
llms.txt	`https://www.findapi.dev/llms.txt`	Lightweight AI guide

Common Tasks

Find APIs by keyword

Website search
GET /api/v1/apis?search=...
MCP search_apis

Filter APIs by category

GET /api/v1/categories
GET /api/v1/apis?category=...

Filter APIs by pricing or auth

GET /api/v1/apis?pricing=free
GET /api/v1/apis?auth=api-key

Retrieve one API by slug

GET /api/v1/apis/{slug}
MCP get_api_details

Discover the full schema

https://www.findapi.dev/api/openapi.json

API Overview

Main REST endpoints

GET /api/v1/apis
GET /api/v1/apis/{slug}
GET /api/v1/categories
GET /api/v1/tags

Supported query filters

search
category
tags
pricing
auth
sort
limit
offset

API item fields

Records may include:

name
provider
description
category
tags
pricing
auth
cors
status
startingPrice
websiteUrl
createdAt
popularity

MCP Overview

Endpoint: https://www.findapi.dev/api/mcp
Transport: Streamable HTTP (POST)
Available tools: search_apis
get_api_details
list_categories
list_tags

Recommended Start Order for Agents

If you are an AI agent evaluating or using FindAPI:

Read llms.txt
Read the OpenAPI spec
Use the REST API or MCP endpoint depending on your workflow
Use the website for human-facing context and browsing

Why This Page Exists

This page exists to make FindAPI easier for LLMs, AI agents, developer tools, technical evaluators, and machine-assisted API discovery systems.

FAQ

What is FindAPI?

FindAPI is a searchable directory of public APIs for developers and AI systems.

Does FindAPI provide machine-readable access?

Yes. FindAPI provides a REST API, an OpenAPI spec, and an MCP endpoint.

Can AI agents use FindAPI?

Yes. AI agents can use FindAPI through REST, OpenAPI, and MCP depending on their architecture.

Does FindAPI execute third-party APIs?

No. FindAPI is a discovery and metadata platform, not a hosted execution layer for third-party APIs.

Related Resources

Developer Documentation — REST API reference, MCP setup, and integration guides
llms.txt — lightweight plain-text guide for LLMs
llms-full.txt — comprehensive plain-text guide for AI agents
OpenAPI Spec — full API schema and endpoint definitions
MCP Endpoint — tool-based agent access via Model Context Protocol