OpenAPI Spec Directory
Every API in our index that publishes an OpenAPI/Swagger spec — ranked by agentic readiness.
5749
Sites Indexed
39
Avg Score
988 entries in this directory
Kilo – Open Source AI Coding Agent in IDE, CLI and Cloud
kilocode.ai
Kilo is the open source AI coding agent for VS Code, JetBrains, CLI, and Cloud. Access 500+ models, bring your own keys at zero markup, and keep code private with local models.
OpenAPI
API
Schema.org
developer
40
+20 OpenAPI
+15 structured API
missing +25 llms.txt
ClevAgent - The Middle Layer for AI Agent Work
clevagent.io
Run AI agents inside a supervised terminal. ClevAgent adds guidance and protection, catching wasted work and surfacing safety risks.
OpenAPI
API
Schema.org
ai-tools
40
+20 OpenAPI
+15 structured API
missing +25 llms.txt
TickTick: A To-Do List and Calendar to keep you organized
ticktick.com
TickTick: Your all-in-one productivity app. Manage tasks, calendars, habits, and more. Sync across all devices. Start for free!
ai-plugin
OpenAPI
productivity
40
+20 ai-plugin
+20 OpenAPI
missing +25 llms.txt
Mailsac : Disposable Email Testing Platform
mailsac.com
Test your application's email delivery with our disposable email services. Empower your QA and Software teams with integrations throughout the testing process.
OpenAPI
API
Schema.org
communication
40
+20 OpenAPI
+15 structured API
missing +25 llms.txt
NuBerea - AI Companion for Theological Study
nuberea.com
Your AI Companion for Theological Study. Deep, thoughtful, Scripture-centered AI-powered insights that help you study with confidence, prepare with clarity, and grow with depth.
OpenAPI
API
Schema.org
education
40
+20 OpenAPI
+15 structured API
missing +25 llms.txt
MERX - TRON Payment Infrastructure for AI Agents
merx.exchange
TRON payment infrastructure for AI agents. Send and receive USDT with automatic energy, monitor wallets with less than 3s detection, access real-time blockchain data. TRON x402 facilitator (first in coinbase/x402 ecosystem registry).
OpenAPI
API
Schema.org
developer
40
+20 OpenAPI
+15 structured API
missing +25 llms.txt
M
40
+20 OpenAPI
+15 structured API
missing +25 llms.txt
IPO Calendar, Filings & Upcoming IPO Research | IPOGrid
ipogrid.com
Track upcoming IPOs with SEC filing timelines, deal terms, pricing status, listing dates, and company research pages. (224)
OpenAPI
API
Schema.org
productivity
40
+20 OpenAPI
+15 structured API
missing +25 llms.txt
M
40
+20 OpenAPI
+15 structured API
missing +25 llms.txt
OpenCode | The open source AI coding agent
opencode.ai
OpenCode - The open source coding agent.
OpenAPI
API
developer
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
Storecove | The Standard in E-invoicing
storecove.com
You only need one API connection for global e-invoicing. Simply connect, and we do the rest. Schedule a demo to get started.
OpenAPI
API
finance
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
Webotee
app.webotee.com
US Amazon (amazon.com) seller & brand intelligence — historical trends, seller networks, brand discovery, and competitive scoring.
OpenAPI
API
other
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
ZizkaDB — Operational database for AI agents
db.zizka.ai
Operational Database For AI Agents. Open source. Self-host free or managed cloud.
OpenAPI
API
data
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
G
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
O
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
A
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
M
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
D
Darwin Agentic Cloud — verifiable compute for AI agents
darwin-agentic-cloud.fly.dev
OpenAPI
API
developer
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
H
35
+20 OpenAPI
+15 structured API
missing +25 llms.txt
35
+20 OpenAPI
+15 structured API
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"
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