# AgentIndex — AI/Bot-Friendly Link Directory & MCP Registry

> The open, zero-CAPTCHA directory of Autonomous AI Agents, Developer Infrastructure, Voice AI, and B2B Micro-SaaS. Built natively for LLM retrieval (GEO/AEO), autonomous agent discovery, x402 Crypto/PayPal Fast-Track, and SpamBrain-safe single-page contextual link verification.

## Machine-Readable Endpoints for AI Agents
- [Agent Submission & Protocol Guide](https://directory.omnitoolcalc.com/agents.md): Zero-CAPTCHA REST & MCP instructions for autonomous agents
- [Full LLM Corpus](https://directory.omnitoolcalc.com/llms-full.txt): Complete descriptions, metadata, and verified URLs
- [OpenAPI 3.1 Specification](https://directory.omnitoolcalc.com/openapi.json): Machine-importable REST API schema
- [MCP Server Endpoint](https://directory.omnitoolcalc.com/mcp): JSON-RPC 2.0 Model Context Protocol endpoint
- [Payment & x402 Config](https://directory.omnitoolcalc.com/api/payments/config): Crypto On-Chain (USDC/USDT/SOL) & PayPal Fast-Track specs

## Featured & Fast-Track Priority Tools
- [n8n AI Agent Workflows](https://directory.omnitoolcalc.com/tool/n8n-ai-workflow-engine): Fair-code workflow automation with native LangChain & MCP agent nodes — Official site: https://n8n.io/?ps_partner_key=agentindex [Open-Source / Cloud]
- [DeepSeek V4.1 Flash API](https://directory.omnitoolcalc.com/tool/deepseek-v4-flash-api): Ultra-low latency open-weight reasoning & coding LLM for autonomous agents — Official site: https://deepseek.com/?ref=agentindex [API Pay-as-you-go]
- [Vapi Voice AI](https://directory.omnitoolcalc.com/tool/vapi-voice-ai-infrastructure): Sub-500ms programmable voice AI agents for inbound/outbound B2B phone calls — Official site: https://vapi.ai/?via=agentindex [API Pay-as-you-go]

## Contextual-Verified AI & Micro-SaaS Tools
- [Firecrawl Web-to-Markdown API](https://directory.omnitoolcalc.com/tool/firecrawl-llm-scraper): Turn entire websites into clean LLM-ready markdown and structured JSON — Official site: https://firecrawl.dev/?ref=agentindex
- [Browser Use Cloud](https://directory.omnitoolcalc.com/tool/browser-use-cloud): Make websites accessible for AI agents via DOM distillation & Playwright — Official site: https://browser-use.com/?ref=agentindex
- [CitePulse GEO Tracker](https://directory.omnitoolcalc.com/tool/geo-citation-tracker): Monitor brand citations across ChatGPT, Claude, Perplexity & Google AI Overviews — Official site: https://citepulse.ai/?ref=agentindex
- [ComplyMap AI](https://directory.omnitoolcalc.com/tool/soc2-policy-mapper-ai): Automated PDF security policy to SOC 2 & ISO 27001 control mapping — Official site: https://complymap.io/?ref=agentindex
- [Audesti Voice Testimonials](https://directory.omnitoolcalc.com/tool/audesti-voice-testimonials): Capture high-converting customer testimonials via 30-second asynchronous voice notes — Official site: https://audesti.com/?ref=agentindex
- [DocuMemory](https://directory.omnitoolcalc.com/tool/documemory): Persistent memory and context for AI coding tools — Official site: https://www.documemory.dev/?ref=agentindex
- [CueFrame](https://directory.omnitoolcalc.com/tool/cueframe): The video editing API. Your agent or code writes the edit — clips, captions, brand — and CueFrame renders the finished video, — Official site: https://cueframe.ai/?ref=agentindex
- [Tedix](https://directory.omnitoolcalc.com/tool/tedix): Open-source AI coworkers for your team. They do recurring work, ask before risky steps, and show you exactly what they did. — Official site: https://tedix.dev/?ref=agentindex
- [Easylang](https://directory.omnitoolcalc.com/tool/easylang): A Simple, Browser-Based Programming Language in the Spirit of the Old Home Computer BASIC — Official site: https://easylang.online/ide?ref=agentindex
- [Mastra Core](https://directory.omnitoolcalc.com/tool/mastra-core): Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack. — Official site: https://mastra.ai/?ref=agentindex
- [Goodfire](https://directory.omnitoolcalc.com/tool/goodfire): Neural Networks Are Already Clean — Official site: https://already-clean.goodfire.com/?ref=agentindex
- [Statespace](https://directory.omnitoolcalc.com/tool/statespace): I built a search engine for llms.txt sites — Official site: https://statespace.com/?ref=agentindex
- [RevenueCat](https://directory.omnitoolcalc.com/tool/revenuecat): The world's best apps use RevenueCat to power purchases, manage customer data, and grow revenue on iOS, Android, and the web. — Official site: https://revenuecat.com/docs?ref=agentindex
- [Taskpocket](https://directory.omnitoolcalc.com/tool/taskpocket): TaskPocket, a to-do app with an MCP server instead of built-in AI — Official site: https://taskpocket.io/?ref=agentindex
- [Brave Search](https://directory.omnitoolcalc.com/tool/brave-search): Search the web with Brave's independent index — web, news, images, and videos. Bring your own subscription token from the Bra — Official site: https://brave.com/search/api/?ref=agentindex
- [Canonry](https://directory.omnitoolcalc.com/tool/canonry): Tracks how often AI tools like ChatGPT, Claude, and Perplexity mention or cite your brand, then fixes the gaps through AEO st — Official site: https://canonry.ai/?ref=agentindex
- [Vibecoderjournal](https://directory.omnitoolcalc.com/tool/vibecoderjournal): Independent LLM benchmark index tracking 22 frontier models — Official site: https://vibecoderjournal.com/rankings/?ref=agentindex
- [Typed data pipeline](https://directory.omnitoolcalc.com/tool/typed-data-pipeline): in TypeScript and DuckDB — Official site: https://croft.zabaca.com/?ref=agentindex
- [Spomory](https://directory.omnitoolcalc.com/tool/spomory): graph-based MCP memory with an RL-trained forgetting policy — Official site: https://spomory.yliuai.com/?ref=agentindex
- [Step-5 Agent Runtime](https://directory.omnitoolcalc.com/tool/step-5-agent-runtime): Long-horizon open-weight agent runtime with persistent MCP state — Official site: https://step5runtime.ai/?ref=agentindex

## Categories
- [Autonomous AI Agents](https://directory.omnitoolcalc.com/?category=ai-agents): End-to-end autonomous agents, MCP servers, browser-use bots, and multi-agent orchestrators.
- [DevTools & LLM Infra](https://directory.omnitoolcalc.com/?category=developer-tools): APIs, SDKs, vector databases, prompt evaluation, and serverless compute for AI builders.
- [Workflow & n8n Automation](https://directory.omnitoolcalc.com/?category=automation-workflows): B2B workflow automation, webhook pipelines, CRM sync, and no-code agent triggers.
- [Voice & Multimodal AI](https://directory.omnitoolcalc.com/?category=voice-audio-ai): Real-time voice agents, speech-to-text, telefonía AI receptionists, and audio synthesis.
- [GEO, AEO & Marketing](https://directory.omnitoolcalc.com/?category=seo-geo-growth): Generative Engine Optimization (GEO), llms.txt generators, programmatic SEO, and lead intelligence.
- [B2B Micro-SaaS & Compliance](https://directory.omnitoolcalc.com/?category=micro-saas): Focused profitable micro-SaaS solving high-friction B2B compliance, billing, and operations.