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

• mcp_observatory_disclosure_guideFree

  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_lookupFree

  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_nowFree

  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 does that. Rate limited, because it contacts somebody else's server on your behalf.

• mcp_observatory_methodFree

  How the walk was run, what we got wrong and corrected, and the four rules the report holds itself to.

• mcp_observatory_stateFree

  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_summaryFree

  The counts, as published and as corrected. How many addresses answered, how many tools they exposed, how many stated who compensates their operator.

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 398ms20/20
• Tool poisoning6 tool descriptions checked15/15
• Auth qualityopen endpoint, read-only tools10/15
• Maintenancelast push 0 days ago15/15
• Maintainer identityregistry namespace matches repository owner6/10

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

Is MCP Observatory: one read only walk over every https endpoint in the official registry MCP server safe?

Yes, by our scan: it is graded A (88/100). Read the MCP Observatory: one read only walk over every https endpoint in the official registry safety report

How do I install MCP Observatory: one read only walk over every https endpoint in the official registry?

It runs remotely at observatory.horizonshield.dev. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.

Does MCP Observatory: one read only walk over every https endpoint in the official registry need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

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

The last commit was in the last day (2026-09-20). The latest release is v0.1.1.

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

100% of our last 6 checks got an answer. We check remote servers about four times a day.

What can I use instead of MCP Observatory: one read only walk over every https endpoint in the official registry?

Servers from other publishers that do the same job: Dashclaw MCP server.