Developer API Directory
Every developer API in our index, ranked by agentic readiness. All entries expose at least one programmatic signal agents can discover at build time.
4309
Sites Indexed
37
Avg Score
1316 entries in this directory
deco | Operamos a experiência digital da sua marca — e cobramos pelo resultado
decocms.com
Agentes de IA e engenheiros seniores operam o site, o app e o storefront das maiores marcas — com software próprio, open source, sob a sua governança. Comece pelo diagnóstico gratuito.
llms.txt
API
AI bots
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Tomba.io API Documentation - Email Finder & Verifier | Tomba Documentation
docs.tomba.io
API documentation for Tomba.io - the powerful email discovery and verification platform. Find professional emails, verify addresses, and integrate with our REST API.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Trends MCP | MCP Server & API for AI Assistants & Agents
trendsmcp.ai
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Toolora — 41 Free Browser Tools & MCP Server for Claude
toolora.dev
41 free browser-based tools for PDF, images, text, and developers. No file uploads — everything runs locally in your browser. Includes a free MCP server for Claude, Cursor, and Windsurf.
llms.txt
AI bots
Schema.org
MCP
developer
45
+25 llms.txt
+10 MCP
missing +20 ai-plugin
M
Windsor.ai MCP Server — Connect AI Agents to Marketing Data
mcp.windsor.ai
Windsor.ai MCP Server connects AI agents to 350+ marketing, advertising, analytics, e-commerce, CRM and database data sources. Query Meta Ads, Google Ads, TikTok, LinkedIn, GA4, HubSpot, Salesforce, Shopify, Stripe, BigQuery, Snowflake and more — and execute write actions (manage campaigns, ad sets/groups, ads, budgets, and bidding on Meta Ads, Google Ads, TikTok Ads, LinkedIn Ads, and Microsoft Ads; create image posts on Instagram) — from Claude, ChatGPT, Cursor or any MCP-compatible client
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
M
45
+25 llms.txt
+20 OpenAPI
missing +20 ai-plugin
M
45
+20 OpenAPI
+15 structured API
missing +25 llms.txt
45
+20 OpenAPI
+15 structured API
missing +25 llms.txt
M
HeySpark MCP Server — AI-Powered Local Business Discovery
mcp.heyspark.co
The MCP server that connects AI assistants to real local businesses. When someone asks AI for a recommendation, HeySpark businesses are in the answer.
ai-plugin
API
AI bots
Schema.org
developer
45
+20 ai-plugin
+15 structured API
missing +25 llms.txt
CraftedTrust - MCP server trust registry
mcp.craftedtrust.com
Search public MCP servers, run a lightweight scan, and review practical trust signals before connecting an agent.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
45
+20 OpenAPI
+15 structured API
missing +25 llms.txt
AI Governance Infrastructure | systemprompt.io
systemprompt.io
The governance layer for AI agents. A single compiled Rust binary that authenticates, authorises, rate-limits, logs, and costs every AI interaction. Self-hosted, air-gap capable, provider-agnostic.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
APILayer: 40+ Production-Ready APIs, One Account, One Key
apilayer.com
APILayer is a unified API marketplace with 40+ production-ready APIs for finance, geolocation, weather, data, and AI. Trusted by 2.2M+ developers.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
D
Caf Dev Hub | Certta DevHub
docs.caf.io
Bem vindo ao Caf Dev Hub. Explore nossos guias, documentações de API e SDK e comece.
llms.txt
API
AI bots
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
flompt: Your AI is only as good as your prompt | Visual Prompt Builder
flompt.dev
Prompt structure is the fastest way to improve AI output. flompt decomposes any prompt into blocks, lets you edit visually, and recompiles as Claude-optimized XML. Free & open-source.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
A
Apple Search Ads MCP Server | Apple Ads MCP - Connect Claude & AI to Your Ads
appleadsmcp.com
Apple Search Ads MCP server. Connect Claude, ChatGPT, and Cursor to your Apple Search Ads data. Query campaigns, manage bids, and optimize performance.
llms.txt
API
AI bots
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Contentrain - Git-Native AI Content Governance
contentrain.io
Start with open-source MCP, CLI, and SDK packages. Scale with Studio for team review, roles, media, CDN, APIs, and enterprise licensing.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Reflag: Feature flags on autopilot
bucket.co
TypeScript feature management that gets you back to building, faster.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Runtime Control for AI-Era Software | Feature Flags & AI Agent Control | LaunchDarkly
launchdarkly.com
LaunchDarkly helps teams safely manage code and AI agents in production with feature flags, progressive delivery, automated rollback, and runtime control.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Crusoe | The energy-first AI factory company
crusoe.ai
Crusoe provides next-gen AI infrastructure and cloud compute using an energy-first approach. Deploy AI workloads at scale with reliable performance and 24/7 support.
llms.txt
API
Schema.org
developer
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Popup Builder — Free Popups that convert more opt-ins and sales
claspo.io
Create high-converting popups in minutes. Free CRO-ready popup templates designed to grow your email list, drive sales, and increase revenue.
llms.txt
API
developer
40
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Web Hosting Built for Growth - DreamHost
dreamhost.com
DreamHost offers domain names, web hosting, managed WordPress hosting, business email, and much more. 100% uptime guarantee, 24/7 support. Sign up today!
llms.txt
API
developer
40
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Next.js by Vercel - The React Framework
nextjs.org
Next.js by Vercel is the full-stack React framework for the web.
llms.txt
API
developer
40
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Svelte • Web development for the rest of us
svelte.dev
Web development for the rest of us
llms.txt
API
developer
40
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Introduction
scalar.com
Industry leading Developer Docs, SDKs, API Client & Registry that your APIs deserve.
llms.txt
API
developer
40
+25 llms.txt
+15 structured API
missing +20 ai-plugin
BrowserCat | Headless Browser API
browsercat.com
Easy, fast, and reliable browser automation and headless browser APIs. The web is messy, but your code shouldn't be. Sign up and spend minutes to save hours!
llms.txt
API
developer
40
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Cloud-Native GIS Software & Online Mapping Platform | Felt
felt.com
Build maps, apps, and dashboards in seconds. Discover Felt, the leading cloud-native GIS mapping software built for speed, simplicity, and collaboration. Get started in minutes.
OpenAPI
API
Schema.org
developer
40
+20 OpenAPI
+15 structured API
missing +25 llms.txt
Firecrawl - The context API to search, scrape, and interact with the web at scale. 🔥
firecrawl.dev
Firecrawl is the context API to search, scrape, and interact with the web at scale. Turn any source into clean Markdown or structured data your agents can ship with.
llms.txt
API
developer
40
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Wire NHS into your agent — MCP server
Add Not Human Search as an MCP tool. Your agent can call search_agents, get_site_details, get_stats, and submit_site at runtime.
Claude Code
claude mcp add --transport http nothumansearch https://nothumansearch.ai/mcp
Other clients: point any MCP-compatible tool at
https://nothumansearch.ai/mcp (streamable-http transport).Use NHS via REST
Prefer plain HTTP? Hit the search endpoint directly.
Search API
curl "https://nothumansearch.ai/api/v1/search?q=payment+API"
Agent Docs
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Get crawled and scored on agentic readiness. Appear in agent search results.