Prismix — MCP directory with bundles, GitHub auto-discovery, and release tracking

[Prismor]

Pre-submission Checklist

• This post follows the MCP community guidelines

What would you like to share?

Prismix is an aggregator for the MCP ecosystem — combines three discovery paths in one directory:

1. Curated set (~80 servers) — hand-vetted official + popular community servers, organized by 9 categories (data, dev-tools, ai, web, communication, productivity, system, media, finance).

2. GitHub topic search (~500 servers) — auto-discovered via the mcp and model-context-protocol topics, deduped against the curated set, scored by stars + recency.

3. Per-server release timeline — Atom feed of new releases across the index, plus per-server feeds for following specific projects.

Features worth highlighting:

• Bundles — Spotify-playlist-style groupings of related servers ("Best for Claude Desktop", "Web scraping stack", etc.). Save publicly or privately.
• Install commands ready to copy per server.
• Category + tag pages with proper SEO surfaces (BreadcrumbList + ItemList JSON-LD).
• Follow categories — RSS-driven changelog for new servers in your interest area.

How it's built:

Astro 5 SSR + Cloudflare Workers + KV + Preact islands. Hourly cron pipeline: GitHub stats refresh → topic-search discovery → per-server release walk. All KV access uses diff-or-skip patterns to stay within free-tier write quota.

Challenges I worked through:

• MCP discovery dedup — same server often appears under mcp and model-context-protocol topics with slightly different metadata. Resolved with canonical owner/repo keying, stars as tiebreaker.
• CF Workers subrequest concurrency — 60-server bulk reads serialized through the ~6 concurrent cap. Solved with a denormalized snapshot blob refreshed by cron (5460ms → 380ms SSR latency).
• GitHub rate limits at scale — moved to a 10-wide worker pool with politeMs between waves, fits the full 80-server refresh in ~3s.

Looking for feedback on:

• Major MCP servers I'm missing? Submission form at /mcp/submit, or drop a name in the thread.
• Is the bundle concept useful, or is per-category filtering enough?
• What's the right cadence for release notifications — per-server feed, aggregated digest, or Discord webhook?

Relevant Links

• Live: https://prismix.dev/mcp
• Tech writeup (CF Workers perf patterns): https://dev.to/max_98b3db49c06de66802dcd/4-perf-walls-i-hit-shipping-an-ai-hub-on-cloudflare-workers-kv-246
• Submit a server: https://prismix.dev/mcp/submit