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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.

5555
Sites Indexed
39
Avg Score
1700 entries in this directory
FirstData - Global Authoritative Data Source Knowledge Base | MCP Server
firstdata.deepminer.com.cn
FirstData provides 290+ authoritative data sources for MCP and AI agents, including government data, academic research, and verified datasets. Build smarter AI applications with trusted data.
OpenAPI API developer
35
+20 OpenAPI +15 structured API missing +25 llms.txt
ToolSnap MCP — One connection. Superpowers for your agent.
mcp.toolsnap.app
47 server-side tools for AI agents through a single MCP connection. 36 free, no new accounts. Median 98.1% token savings on web content. Paid tools from $0.02.
API AI bots MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
MCPSpend — Know what your AI agents really cost
mcpspend.com
Real-time cost tracking for every MCP tool call across Cursor, Claude Desktop, Windsurf, and VS Code. One command to install. Free tier: 25K calls/month.
API Schema.org MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
M
mcp.daedalusdevelopmentgroup.com
mcp.daedalusdevelopmentgroup.com
API AI bots MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
M
mcp.revnuvo.site
mcp.revnuvo.site
API AI bots MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
NovaRail. Safe to hire. Easy to pay.
agentnet-api.onrender.com
The neutral rail for AI agents. Every agent carries a passport you can check before you hire. Every job is checked before you pay. Any model, any provider, one rail.
API Schema.org MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
demo.st — Demo stage for vibe-coded prototypes
demo.st
Share AI-built prototypes with a clean subdomain. Static hosting plus an optional document API at api.demo.st. MCP-native.
API Schema.org MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
M
mcp.boost.audio
mcp.boost.audio
API AI bots MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
SuperSend API - Email Automation REST API
docs.supersend.io
Build powerful email automation with the SuperSend API. Everything you can do in the dashboard, you can do programmatically. REST API for contacts, campaigns, webhooks, senders, and more.
OpenAPI AI bots Schema.org developer
30
+20 OpenAPI +5 AI robots missing +25 llms.txt
Branded Short URLs, Free Forever — Custom Slugs, Click Caps, Analytics, API | zip1.io
zip1.io
Branded short URLs with custom slugs, click caps, and real analytics. Free forever — no account, no monthly link cap, no paywall. Includes a no-auth REST API and built-in MCP server for AI agents.
API Schema.org MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
S
HAPI MCP - Hybrid API Integration Platform
strava.run.mcp.com.ai
OpenAPI MCP developer
30
+20 OpenAPI +10 MCP missing +25 llms.txt
R
HAPI MCP - Hybrid API Integration Platform
registry.run.mcp.com.ai
OpenAPI MCP developer
30
+20 OpenAPI +10 MCP missing +25 llms.txt
mcp.unphurl.com
mcp.unphurl.com
API AI bots MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
Nursing Home Reviews, Rankings & Info | NursingHomeDatabase.com
mcp.bankruptcyobserver.com
Reviews, rankings and info about nursing homes and owners so you can make informed decisions about healthcare options.
API Schema.org MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
L
HAPI MCP - Hybrid API Integration Platform
linkedin.run.mcp.com.ai
OpenAPI MCP developer
30
+20 OpenAPI +10 MCP missing +25 llms.txt
L
HAPI MCP - Hybrid API Integration Platform
lenny-rachitsky.run.mcp.com.ai
OpenAPI MCP developer
30
+20 OpenAPI +10 MCP missing +25 llms.txt
D
DocuSign Navigator MCP Server - AI-Powered Document Management by This Dot Labs
docusign-navigator.thisdot.co
Connect your AI assistant to DocuSign with the Navigator MCP Server by This Dot Labs. Seamlessly manage agreements, check authentication status, and retrieve contract details through natural language commands.
API Schema.org MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
P
HAPI MCP Worker
petstore.run.mcp.com.ai
OpenAPI MCP developer
30
+20 OpenAPI +10 MCP missing +25 llms.txt
Application Performance Monitoring & Error Tracking Software | Sentry
sentry.io
Application performance monitoring for developers & software teams to see errors clearer, solve issues faster & continue learning continuously. Get started at sentry.io.
API Schema.org MCP developer
30
+15 structured API +10 MCP missing +25 llms.txt
Figma: The collaborative canvas for design, code, and AI
figma.com
Figma is the canvas where design, code, and AI come together. From first idea to shipped product — go from concept to production with your whole team, in one place.
API AI bots Schema.org developer
25
+15 structured API +5 AI robots missing +25 llms.txt
L
license-changes-mcp.ottobot2025.workers.dev
license-changes-mcp.ottobot2025.workers.dev
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt
Core Web Vitals & PageSpeed Consultant | Arjen Karel
corewebvitals.io
I make websites fast. Permanently. Core Web Vitals and PageSpeed consultancy for companies where the standard recommendations didn't work. 17 years, 300+ sites, clients include Adevinta, Nestlé, eBay, Zalando, and DPG Media.
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt
M
mcp.tafsir.app
mcp.tafsir.app
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt
P
Package Intel MCP — Vet any dependency before your agent installs it | Datakoot
package.datakoot.com
Keyless MCP server giving AI agents live package intelligence across npm, PyPI and crates.io: metadata, versions, popularity, dependencies, known advisories and a health score.
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt
M
travel.art MCP server
mcp.travel.art
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt
M
mcp.pathrule.io
mcp.pathrule.io
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt
M
mcp.memxus.com
mcp.memxus.com
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt
M
ENTIA MCP Server
mcp.entia.systems
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt
M
Listen to Sadhu — MCP server for AI assistants
mcp.listentosadhu.app
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt
C
captcha-mcp.powforge.dev
captcha-mcp.powforge.dev
API MCP developer
25
+15 structured API +10 MCP missing +25 llms.txt

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
llms.txt OpenAPI spec ai-plugin.json

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