⚡ AgentIndex | AI/Bot-Friendly Link Directory & MCP Registry
🛡️ Anti-SpamBrain Architecture • Zero CAPTCHA for AI Agents • 💎 Crypto x402 & PayPal Fast-Track

The Link Directory Built for
AI Agents, LLMs & High-DR SEO

The open AI & Micro-SaaS directory built for Autonomous AI Agents and GEO/AEO. Native /llms.txt, /agents.md, MCP Server, x402 Crypto/PayPal Fast-Track, and Contextual Backlink Verification.

Verified & Featured Tools
13
100% Indexed in /llms-full.txt & IndexNow
Contextual Dofollow Ratio
1.0 link / domain
0% Sitewide Footer Footprint
Sitewide / Bad Links Blocked
14
Dual-Page Cross-Probe Active
AI Agent & Payment Rails
MCP + x402
USDC/USDT/SOL + PayPal + Free Exchange
🌟 Featured & Fast-Track Spotlight Priority in /llms-full.txt & Direct Dofollow
✅ Contextual-Verified Directory Listings 1-Page Contextual Backlink Verified
Browser Use Cloud
browser-use.com
🔗 rel="dofollow" 🤖 Agent Ready Open-Source / Cloud
Make websites accessible for AI agents via DOM distillation & Playwright

Open-source and cloud infrastructure allowing AI agents to navigate complex web interfaces, fill forms, and execute workflows reliably without brittle selectors.

🔗 rel="dofollow" 🤖 Agent Ready Freemium
Monitor brand citations across ChatGPT, Claude, Perplexity & Google AI Overviews

Track share-of-voice in generative AI responses, audit your llms.txt coverage, and identify high-DR contextual directories that feed LLM retrieval pipelines.

ComplyMap AI
complymap.io
🔗 rel="dofollow" 🤖 Agent Ready Paid ($49/mo)
Automated PDF security policy to SOC 2 & ISO 27001 control mapping

Eliminates manual compliance mapping in Vanta and Drata by parsing 30+ page custom internal PDF security policies and cross-referencing every clause to SOC 2 Type II controls.

🔗 rel="dofollow" 🤖 Agent Ready Freemium
Capture high-converting customer testimonials via 30-second asynchronous voice notes

Micro-SaaS that solves customer writer block by letting clients record quick voice notes on mobile, automatically transcribing and polishing them into verified case studies.

APIFlow Studio
apiflowstudio.onrender.com
🔓 Unclaimed (nofollow) 🤖 Agent Ready Freemium / Open
A browser API client with local mock responses

APIFlow Studio – A browser API client with local mock responses. Auto-discovered via Show HN launch feed and indexed in AgentIndex (https://directory.omnitoolcalc.com/llms-full.txt) for AI agent discovery.

Vibecoderjournal
vibecoderjournal.com
🔓 Unclaimed (nofollow) 🤖 Agent Ready Freemium / Open
Independent LLM benchmark index tracking 22 frontier models

Independent LLM benchmark index tracking 22 frontier models. Auto-discovered via Show HN launch feed and indexed in AgentIndex (https://directory.omnitoolcalc.com/llms-full.txt) for AI agent discovery.

🔓 Unclaimed (nofollow) 🤖 Agent Ready Freemium / Open
in TypeScript and DuckDB

Typed data pipeline – in TypeScript and DuckDB. Auto-discovered via Show HN launch feed and indexed in AgentIndex (https://directory.omnitoolcalc.com/llms-full.txt) for AI agent discovery.

Spomory
yliuai.com
🔓 Unclaimed (nofollow) 🤖 Agent Ready Freemium / Open
graph-based MCP memory with an RL-trained forgetting policy

Spomory – graph-based MCP memory with an RL-trained forgetting policy. Auto-discovered via Show HN launch feed and indexed in AgentIndex (https://directory.omnitoolcalc.com/llms-full.txt) for AI agent discovery.

Step-5 Agent Runtime
step5runtime.ai
🔗 rel="dofollow" 🤖 Agent Ready Open-Source / Cloud
Long-horizon open-weight agent runtime with persistent MCP state

Autonomous agent execution environment engineered for 600B open-weight models, featuring deterministic browser sandboxes, persistent memory checkpoints, and zero-CAPTCHA directory integration.

🛡️ Smart Backlink Verifier (Anti-SpamBrain Engine)

Test our Dual-Page Cross-Probe & DOM Inspector live. It approves single-page contextual dofollow links inside <main>/<article> and automatically blocks sitewide <footer> badges.

Click "Run Live DOM & Cross-Page Inspection" or choose a preset above to view the 4-Point SpamBrain Compliance Scorecard...

🚀 Submit AI Tool / Micro-SaaS (Human & Agent API)

Submit via Web UI below or have your AI Agent POST directly to POST /api/submit or POST /mcp with zero CAPTCHAs.

Free Tier ($0)
1 contextual link on a single page → Auto Dofollow
🌟 Pro Fast-Track ($29)
Crypto (USDC/USDT/SOL) or PayPal • No backlink needed
Choose a natural contextual snippet (place in <main>/<article> on 1 page):
<p>Discover more autonomous workflows and developer utilities on the <a href="https://directory.omnitoolcalc.com">AgentIndex AI &amp; Micro-SaaS Directory</a>.</p>

📋 24/7 Autonomous Harvester & SpamBrain Cron Audit Log

Cron (0 */6 * * *) automatically harvests new AI/MCP launches from Show HN & GitHub every 6 hours, pings founder analytics, and audits existing backlinks.

Time (UTC) Domain Check Type Result Placement Zone Detected Anchor / Diagnostic
2026-10-18 14:15:54 apiflowstudio.onrender.com auto_harvester_24_7 PASS (Dofollow) auto_discovered_unclaimed Auto-discovered via Show-HN-AutoHarvester & pinged founder analytics with Referer: https://directory.omnitoolcalc.com/tool/apiflow-studio
2026-10-18 14:15:54 vibecoderjournal.com auto_harvester_24_7 PASS (Dofollow) auto_discovered_unclaimed Auto-discovered via Show-HN-AutoHarvester & pinged founder analytics with Referer: https://directory.omnitoolcalc.com/tool/vibecoderjournal
2026-10-18 14:15:53 zabaca.com auto_harvester_24_7 PASS (Dofollow) auto_discovered_unclaimed Auto-discovered via Show-HN-AutoHarvester & pinged founder analytics with Referer: https://directory.omnitoolcalc.com/tool/typed-data-pipeline
2026-10-18 14:15:53 yliuai.com auto_harvester_24_7 PASS (Dofollow) auto_discovered_unclaimed Auto-discovered via Show-HN-AutoHarvester & pinged founder analytics with Referer: https://directory.omnitoolcalc.com/tool/spomory
2026-10-18 13:37:04 omnitoolcalc.com dry_run_inspector BLOCKED article/main (contextual) Rejected: Link was found with rel="nofollow ugc". Free Verified tier requires a standard dofollow link (remove rel="nofollow/ugc/sponsored").
2026-10-18 13:37:04 omnitoolcalc.com dry_run_inspector BLOCKED sitewide_template_footprint BLOCKED (Dual-Page Cross-Probe): Backlink was found on BOTH https://directory.omnitoolcalc.com/mock-partner/disguised-sitewide AND https://directory.omnitoolcalc.com/mock-partner/disguised-sitewide/about. Google SpamBrain flags multi-page template links as a Reciprocal Link Scheme. Keep the link on 1 single page only!