npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

@rail402.dev/mcp-discovery

v0.1.0

Published

MCP server exposing Stellar Bazaar search and a budget-capped paid-call proxy to agents.

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

tolgayaycitolgayayci

Keywords

Readme

@rail402.dev/mcp-discovery

An MCP server that lets an agent search the Stellar Bazaar and make a paid call from inside an agent runtime. It wraps the discover, pay and retry loop behind two MCP tools:

  • search_stellar_resources: natural-language search over the Bazaar catalog, with structured output.
  • pay_and_call: pay for and call a discovered resource (an HTTP endpoint or an MCP tool) under a mandatory spend cap. The price is surfaced, and an unbounded payment is never made silently.

Every tool has strict JSON input and output schemas, and every rejection carries a machine-readable code and a non-null reason.

Install

npx @rail402.dev/mcp-discovery            # stdio, the transport an agent runtime spawns
# or install the bin:
npm install -g @rail402.dev/mcp-discovery # provides `rail402-mcp`

Usage

The rail402-mcp bin defaults to stdio (the transport an MCP client spawns as a subprocess) and to the live Bazaar. Add --http for the hosted Streamable HTTP transport:

rail402-mcp                                     # stdio, Bazaar = https://facilitator.rail402.dev
rail402-mcp --secret S...                        # enable pay_and_call (omit for search-only)
rail402-mcp --http --port 8080                   # Streamable HTTP: serves /mcp and /health
rail402-mcp --bazaar http://localhost:4022 --allow-private-hosts   # point at a local facilitator

Every endpoint is overridable by flag or env (BAZAAR_URL, STELLAR_NETWORK, CLIENT_STELLAR_PRIVATE_KEY, MAX_AMOUNT_CEILING, PORT). Run rail402-mcp --help for the full list. A hosted testnet instance runs at https://mcp-discovery-testnet.up.railway.app/mcp.

Part of Rail402. Apache-2.0.