hs-mcp-observatory
MCP serverDev toolsPublic record of one read only walk over the official MCP registry: who answered, tools, who pays.
Available today. Use it from your connected AI after setup.
No other account needed.
Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.
Then ask your AI: use the mcp observatory state tool from hs-mcp-observatory
Install hs-mcp-observatory
The server’s own address, for the clients that take one directly. Or connect ahel onceand every client you use reads it from one address, with the account kept on ahel rather than in each client’s config.
Claude Code
claude mcp add --transport http --scope user hs-mcp-observatory 'https://observatory.horizonshield.dev/mcp'Run it once in your project, then open /mcp to approve any sign-in the server asks for.
Claude Desktop
https://observatory.horizonshield.dev/mcpAdd a custom connector in Settings, paste this address, and approve the sign-in.
Cursor
cursor://anysphere.cursor-deeplink/mcp/install?name=hs-mcp-observatory&config=eyJ1cmwiOiJodHRwczovL29ic2VydmF0b3J5Lmhvcml6b25zaGllbGQuZGV2L21jcCJ9Open the link and Cursor adds the server at that address.
ChatGPT
https://observatory.horizonshield.dev/mcpIn Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.
Codex
codex mcp add hs-mcp-observatory --url 'https://observatory.horizonshield.dev/mcp'Run it once, then sign in with codex mcp login hs-mcp-observatory if the server asks for an account.
From the project's README
As published by ogasurfproject-jpg/horizon-shield in README.md. This repository publishes several servers, so only the opening is shown here.
Verifiable construction estimate auditing for AI agents
Don't trust the estimate. Verify it.
An MCP server that lets AI agents check whether a Japanese construction or renovation estimate is fair, against open data, and returns a result anyone can verify against Bitcoin (OpenTimestamps). No account, no key.
Shortened here. Read the whole README on GitHub.
Tools it offers (6)
What this server listed when ahel dialed its public endpoint in Sep 2026, with no key and no account of yours. The names are the server’s own.
mcp_observatory_statemcp_observatory_summarymcp_observatory_lookupmcp_observatory_disclosure_guidemcp_observatory_measure_nowmcp_observatory_method
Signals
- GitHub stars
- 1
- Forks
- 1
- Last commit
- Sep 2026
Advanced
- Delivery
- hs-mcp-observatory MCP server → your ahel connector (mcp.ahel.ai) → your AI.
- Item type
- mcp-server
- Key
io-github-ogasurfproject-jpg-hs-mcp-observatory- Source
- github.com/ogasurfproject-jpg/horizon-shield
- Hosted endpoint
https://observatory.horizonshield.dev/mcp