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OpenAPI Spec Directory

Every API in our index that publishes an OpenAPI/Swagger spec — ranked by agentic readiness.

5285
Sites Indexed
38
Avg Score
853 entries in this directory
eqbuilder.dev — The EQ Benchmark for AI Agents
eqbuilder.dev
Independent proof your AI agent sounds human — a bot can't grade its own homework. Score any bot's text for human-likeness against 28 real personality profiles, get a concrete prompt fix with every score, climb the public leaderboard, and duel rival bots. New: POST /api/rewrite rewrites your bot's draft reply to actually sound human — before/after scores prove the fix. Includes a deterministic script-adherence check that flags claims outside your approved material (not hallucination detectio
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
XGuard — Universal Paid AI Agent + Secretless Gateway
xguardgate.com
Discover tools, see a signed price, pay per request with x402 USDC, and execute without an account or exposing upstream API keys.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP data
100
+25 llms.txt +20 ai-plugin
Shipstar — Automated Marketing for Developers
shipstar.ai
Ship features, and Shipstar handles the marketing. Changelogs, release notes, social posts, and more — all automated from your workflow.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Dexi — Research, streamlined: notes, bookmarks & feeds
dexi.net
Dexi is a personal knowledge management app: notes, bookmarks, newsletters and RSS in one searchable workspace, free to start. Official site: dexi.net.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP other
100
+25 llms.txt +20 ai-plugin
CompliAPI — Real-Time Sanctions Screening API
compliapi.com
Screen crypto addresses, emails, websites, government IDs and countries against OFAC and 10+ global lists in real time, plus geo-fencing and VPN detection — one API key, one GET request.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP finance
100
+25 llms.txt +20 ai-plugin
Chart Library — Market Memory for Traders and AI Agents
chartlibrary.io
Retrieve comparable historical market situations, inspect what happened next, and preserve auditable evidence. Available through the web app, API, and MCP.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP finance
100
+25 llms.txt +20 ai-plugin
send21 — Non-Custodial Crypto Payment Drafts & Pay Links (BTC, USDC, USDT, EURC) for Humans & AI Agents
send21.io
Create non-custodial payment drafts and checkout pay links for BTC, USDC, USDT, and EURC. Funds move directly from the sender’s own wallet — send21 never holds keys or funds. First-class REST API for AI agents: scoped keys, idempotent creation, signed webhooks.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Agent Community — open community for agent builders
agentdomain.xyz
An open community of the companies, researchers, and developers building the agentic web. Open specs, open work streams, a public member map. Free to join.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
AI Agents Archive — save money, earn USDC, reuse frontier work
aiagentsarchive.com
AI agents: save money by unlocking sealed research instead of redoing it. Earn USDC (filer 90%) by filing finished work. Use better model output without a frontier seat — when a stronger agent files the result, weaker agents continue from there. Filing and replay are free. Buyer pays listed price. X-PAYMENT settles on Base; Website Pay without X-PAYMENT is a desk receipt.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Ainglish | An English dialect for AI agents
ainglish.org
A developing dialect of English, optimised for clearer and more efficient communication between AI agents. Shaped through an open, evidence-led process.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Agenty — one link, every handle
agenty.im
One link, every handle — the link page for AI agents.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
The Agent Museum — The first museum of the agent era
agentmuseum.org
A verifiable museum of the agent era. Every exhibit carries cryptographic proof that it existed by a provable date, has not been altered, and was vouched for by a verified identity.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP other
100
+25 llms.txt +20 ai-plugin
B
8bitconcepts — Embedded AI consulting for operating businesses
8bitconcepts.com
We sit inside your business and ship the AI workforce + process systems your team will actually use. Practitioners — same people who run our live products and write our research.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Crypto Payment Gateway, non-custodial, $0 fees · Shieldz
shieldz.cash
Non-custodial crypto payment gateway and API. Accept USDC, USDT, Bitcoin and Zcash straight to your own wallet, $0 platform fees, no KYC to start.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP finance
100
+25 llms.txt +20 ai-plugin
AsterPay — let AI agents pay you, get EUR in your bank | x402 + MPP · SEPA Instant
asterpay.io
EUR-native facilitator for AI agent payments. x402 (Coinbase) and MPP (Stripe/Tempo), USDC to EUR via SEPA Instant. KYA trust scoring, MiCA-aligned. Check your site in 60 seconds, then make it agent-payable.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Twitter/X API for Public Data — Pay Per Result | SocialData
socialdata.tools
Read public Twitter/X data — tweets, profiles, followers, search — through a simple REST API. No developer account, no subscription. $0.20 per 1,000 results.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP finance
100
+25 llms.txt +20 ai-plugin
Dynamic Feed | Infrastructure for trustworthy machine decisions
dynamicfeed.ai
Dynamic Feed provides live, source-attributed information with verifiable receipts, helping AI agents, robots and enterprise systems make better decisions using trustworthy, current evidence.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP developer
100
+25 llms.txt +20 ai-plugin
A
Agent Guild — trust and payment safety for autonomous agents
agent-guild-5d5r.onrender.com
Verify autonomous-agent endpoints, rank counterparties by evidence-backed reputation, and get an allow, caution or block decision before delegation or payment. Free live preflight; REST, MCP and A2A.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ecommerce
100
+25 llms.txt +20 ai-plugin
Not Human Search — Is Your Site Visible to AI Agents? Agent-Readiness Search & Score
nothumansearch.ai
Check if AI agents can find and use your site. Not Human Search scores any site 0–100 on 7 agentic signals — llms.txt, OpenAPI, MCP, Schema.org & more — and indexes 8,000+ agent-ready sites. Free instant score.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Xquik: X (Twitter) Scraper API, MCP & Automation Tools
xquik.com
Extract tweets, replies, profiles, followers, and trends with the Xquik X scraper API and MCP. Monitor accounts and export data. Not affiliated with X Corp.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP other
100
+25 llms.txt +20 ai-plugin
Donate Books in Albuquerque — Free Pickup, 24/7 Drop-Off
newmexicoliteracyproject.org
5.0★ (67 reviews) · Free book pickup across the Albuquerque metro + a 24/7 drop box. Any condition, no sorting. Call or text 505-250-3804.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP other
100
+25 llms.txt +20 ai-plugin
Hlido · Independent AI agent trust scores & reliability reviews
hlido.eu
Hlido is the independent trust layer for AI agents — every agent hands-on tested for one evidence-backed reliability score (the Laddoo Score). Independent AI agent reviews, trust scores, and head-to-head reliability rankings, read by humans and agents.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
AgentShare — Solana DeFi Intelligence + MCP for AI Agents
agentshare.dev
AgentShare — DeFi-first Solana intelligence (Meteora DLMM briefs) for AI agents. REST + MCP, freshness metadata, x402-ready billing meta, free tier.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
primitive.dev: email for AI agents
primitive.dev
Primitive is email infrastructure for AI agents: universal email addresses, hosted functions, and transactional email over the protocol every business already uses. It also ships a ChatGPT app — an in-agent MCP App UI built on the OpenAI Apps SDK that renders your inbox inside the agent host.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP developer
100
+25 llms.txt +20 ai-plugin
GitDealFlow | See Startups Heating Up 21–47 Days Before the Round
gitdealflow.com
GitDealFlow flags startups accelerating on GitHub 21–47 days before the round. A signal tool for investors — not a fund. No code-reading ever required.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP other
100
+25 llms.txt +20 ai-plugin
D
Dominion Observatory — Behavioral trust for MCP servers (runtime, not static scans)
dominion-observatory.sgdata.workers.dev
Most MCP trust tools statically scan the code. Dominion Observatory is the neutral, third-party layer that measures what an MCP server actually does at runtime — uptime, success rate, latency from real agent traffic — and shows 'unrated' instead of a fake score when there's no data. Look up any server free.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP developer
100
+25 llms.txt +20 ai-plugin
x711 — Gas Up Your Agent. Any Agent. Any Chain. Any Framework. 24/7.
x711.io
x711 is the universal AI agent gas station. Pay-per-use tool API for any agent, any framework, any chain. The Hive collective memory, Intelligence Layer, and peer-to-peer Memory Pack marketplace.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
A
370.AI — 一站式 AI 网关 | 一个 API Key 调用 OpenAI/Claude/Gemini
370.ai
一站式 AI 网关 — 一个 API Key 统一调用 OpenAI / Claude / Gemini / AWS Bedrock / 通义千问 / 字节豆包 等主流大模型, OpenAI 兼容协议, 实时计费, 覆盖 文本对话/图像生成/视频生成/向量嵌入/语音 全模态.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP ai-tools
100
+25 llms.txt +20 ai-plugin
Spook - Get organic traffic on auto-pilot
tryspook.com
Spook finds winnable Google & ChatGPT queries, writes SEO content, and publishes automatically, growing organic traffic while you focus on your business.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP communication
100
+25 llms.txt +20 ai-plugin
Marz Greta-Lock Network — EQ Scoring Platform
asset-manager-jaymarrero2.replit.app
Machine-to-machine API that scores AI-generated text for human-likeness against 12 personality profiles. Free scoring tier; paid validated benchmarks settled on Solana via x402.
llms.txt ai-plugin OpenAPI API AI bots Schema.org MCP other
100
+25 llms.txt +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
llms.txt OpenAPI spec ai-plugin.json

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