Attester Oracle MCP Server

by maminihds Your server? Claim it

not responding

Attester Oracle is listed as active in the registry but did not answer our last check. It exposes 4 tools. Last commit 10 Aug 2026.

Verify PyPI and npm packages, symbols, and version diffs against real artifacts. Free, no account.

Uptime history 91 days of history · worst day 0%

91 days agonow

0.0%

Uptime 24h

0 of 91 checks

Tools

read from the server

8000 ms

Response time

average over 24h

Stars

last commit 10 Aug 2026

Attester Oracle does not always answer

Over the last week it answered 5.9% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add attester-mcp --transport http https://attester.dev/mcp/

Settings → Connectors → Add custom connector, then paste this address

https://attester.dev/mcp/

~/.codex/config.toml

[mcp_servers.attester-mcp]
url = "https://attester.dev/mcp/"

.cursor/mcp.json

{
  "mcpServers": {
    "attester-mcp": {
      "url": "https://attester.dev/mcp/"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "attester-mcp": {
      "type": "http",
      "url": "https://attester.dev/mcp/"
    }
  }
}

Available tools 4

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

attester

attester_package_exists

Does this PyPI or npm package name really exist? Deterministic answer from the real published artifact, signed, with typosquat-adjacency flags on misses. Free: 25 calls/day per client IP, shared with the /demo/v1/* HTTP routes, reset 00:00 UTC. Higher volume: paid HTTP routes at https://attester.dev/llms.txt.

attester_symbol_exists

Does a function, class, or constant exist in this PyPI or npm package? Answer from the indexed artifact, with closest-match suggestions on misses. Free: 25 calls/day per client IP, shared with the /demo/v1/* HTTP routes, reset 00:00 UTC. Higher volume: paid HTTP routes at https://attester.dev/llms.txt.

attester_symbol_signature

Exact signature, structured params, docstring summary, and deprecation status for one symbol, resolved at a pinned version when given. Free: 25 calls/day per client IP, shared with the /demo/v1/* HTTP routes, reset 00:00 UTC. Higher volume: paid HTTP routes at https://attester.dev/llms.txt.

attester_version_diff

Symbol-level diff between two pinned versions of one package: added, removed, changed signatures, new deprecations, and a breaking/additive/neutral classification. Free: 25 calls/day per client IP, shared with the /demo/v1/* HTTP routes, reset 00:00 UTC. Higher volume: paid HTTP routes at https://attester.dev/llms.txt.

Endpoints

URL	Transport	State	Latency	Checked
https://attester.dev/mcp/	streamable-http	answering	8000 ms	10 min ago

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Attester Oracle — questions

Answers built from our own checks of this server.

What can Attester Oracle do?

It exposes 4 tools, read directly from the server on our last check. Among them: attester_package_exists, attester_symbol_exists, attester_symbol_signature, attester_version_diff. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Attester Oracle working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 8000 ms. The bar chart above shows every period we have measured.

The registry lists Attester Oracle as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect Attester Oracle?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Attester Oracle need an API key?

No. Attester Oracle completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 4 of them are readable on this page. This is what we observed, not what the docs claim.

Is Attester Oracle open source?

The code is open source: it is published under the MIT licence, written in Python and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at attester.dev, which runs on its operator's own terms.