Blockchair Mcp

io.github.mrfentmenPublished by GitHub account mrfentmenv1.0.1Updated Oct 24, 2026

Blockchain stats from Blockchair. No key required.

VerifiedSTDIODesktop onlyFinance

Server details

Identifier: io.github.mrfentmen/blockchair-mcp
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 22, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified the GitHub account mrfentmen for this listing. That does not show the account is the product's maker.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

A local MCP server that gives an assistant blockchain statistics from Blockchair, reportedly without an API key.

What you can do: Provides blockchain statistics sourced from Blockchair for the assistant to look up and report on. The manifest lists no individual tools, so the exact queries available are not documented here. It runs as a local process on the user's machine over stdio.
When to use it: Worth considering when you want an assistant to pull Blockchair blockchain statistics during a conversation and prefer a local, keyless setup. Check the package's own documentation first, since no tool list or README is provided here.
Requirements: A local runtime able to run the npm package blockchair-mcp over stdio, typically Node.js. No API key, environment variables or headers are declared. Network access to Blockchair is implied by the description.

Before you install

The description states no key is required, but Blockchair's own terms and rate limits for keyless access are not covered here; verify them before relying on it. The server is desktop-only and not web-executable. No tools are listed, so what data it requests and sends to Blockchair cannot be confirmed from this entry.

Installation

In SourceWeft

Open Blockchair Mcp in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

This repository has no README.

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v1.0.1LatestSep 22, 2026

Score

25% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 days25 pts
Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.
Auth declared10 pts
Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.
Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
License10 pts
Declare a license in the repository or the registry entry.