Matthew Karsten
@ExpertVagabondFounder, Purple Squirrel Media | AI agents + crypto | MCP servers, Solana, Rust
Language Breakdown
Lines of code distribution across 98 owned repositories
I-Shaped Developer
I-shapedSpecialist — deep expertise in JavaScript
Collaboration Network
Global Impact visualization
Repos
125
PRs
0
Growth
+18%
Top Collaborators
No collaborator data yet.
Coding Streak
Contribution activity over the past year
Radoslav Dimitrov
@rdimitrov
anatoly yakovenko
@aeyakovenko
Georgios Konstantopoulos
@gakonst
Noah Zinsmeister
@NoahZinsmeister
Noah Gundotra
@ngundotra
Top Repositories
MCP server for music distribution — catalog management, SoundCloud/YouTube uploads, metadata, ID3 tags (12 tools)
Minimal, forkable workspace template for AI agent development. AGENTS.md + SOUL.md + HEARTBEAT.md + MEMORY/ structure.
Model Context Protocol server for Raycast — 9 tools for AI-native macOS workflow automation
Eye contact intelligence for AI avatars — the missing layer between seeing and connecting
Rust-native Claude Code alternative — 5.4MB binary, $0 on Max, 8 tools, MCP client, semantic compaction, 19-event hooks. Built before the leak.
Local AI music production CLI — generate instrumentals (MusicGen), separate stems (Demucs), convert voices (RVC), mix tracks, and batch process pipelines. Built for Apple Silicon.
MCP server for AI music production — MusicGen generation, Demucs stem separation, RVC voice conversion. 8 tools, TypeScript.
Production-grade Rust video SDK -- HLS/DASH streaming, BOLA ABR, audio fingerprinting, WASM player, formal verification (TLA+). 7 crates, CLI, Python bindings, MCP server.
Bitcoin Ordinals MCP server — 24 tools for inscriptions, runes, BRC-20, collections, marketplace data, and rare sats. Published on npm.
MCP tool-call guardrails for agentgateway — credential scanning, Ed25519 validation, tool-level RBAC. MCP_HACK//26 Track 2 submission.
Open Source Impact
Contributions to external projects
