MCP server

MCP Observatory: one read only walk over every https endpoint in the official registry

io.github.ogasurfproject-jpg/hs-mcp-observatory

Checked 28 Oct 2026, 09:03 UTC · Connected to it and listed its tools

Public record of one read only walk over the official MCP registry: who answered, tools, who pays.

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

6

Token cost

About 602 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

28 Oct 2026, 09:03 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http hs-mcp-observatory https://observatory.horizonshield.dev/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.hs-mcp-observatory]
url = "https://observatory.horizonshield.dev/mcp"

Gemini CLI

{"mcpServers":{"hs-mcp-observatory":{"httpUrl":"https://observatory.horizonshield.dev/mcp"}}}

Cursor

{"mcpServers":{"hs-mcp-observatory":{"url":"https://observatory.horizonshield.dev/mcp"}}}

VS Code

{"servers":{"hs-mcp-observatory":{"type":"http","url":"https://observatory.horizonshield.dev/mcp"}}}

Antigravity

agy mcp add hs-mcp-observatory https://observatory.horizonshield.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"hs-mcp-observatory","server_url":"https://observatory.horizonshield.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"hs-mcp-observatory","server_url":"https://observatory.horizonshield.dev/mcp"}

Tools

• mcp_observatory_disclosure_guide ~78 tokens
  How the 152 servers that stated who compensates their operator actually did it - the field names observed in the wild, with counts. Not a specification we invented.
• mcp_observatory_lookup ~154 tokens
  What happened when we contacted one address, or an aggregate for one host. Returns the record hash and the procedure to recompute it. There is no tool here that lists addresses; you must already hold the one you are asking about.
• mcp_observatory_measure_now ~172 tokens
  Contact one https address now and report what we see: whether it speaks MCP, whether it carries an agent card, and whether that card names who compensates the operator. Read only; no tool is called. robots.txt is read first and honoured. This does NOT change the published record - the next full walk
• mcp_observatory_method ~58 tokens
  How the walk was run, what we got wrong and corrected, and the four rules the report holds itself to.
• mcp_observatory_state ~69 tokens
  What was measured, when, over what population, and what the measurement cannot tell you. Read this before quoting any number from this server.
• mcp_observatory_summary ~71 tokens
  The counts, as published and as corrected. How many addresses answered, how many tools they exposed, how many stated who compensates their operator.

Browse

• GitHub tools
• GitHub and code hosting

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