Show & Tell: buddy-mcp - A terminal-native gacha companion that lives inside Claude Code

[Lyellr88]

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Hey everyone, just shipped the first public release of buddy-mcp and wanted to share it here.

What it is: A gacha collect-em-all that lives entirely inside your Claude Code session via MCP. No browser, no
separate app. Roll a buddy, pet it for luck, build affection tokens, and collect all 18 species in your BuddyDex.

The weird technical part: It doesn't generate a random buddy, it brute-forces a wyhash salt collision against the
Claude Code binary using your userId as a seed. Same user, same buddy, every time across reinstalls. When Claude
auto-updates and overwrites the patch, a SessionStart hook auto-repairs it. No user intervention.

What's included:

• 7 core tools + 20 stat personality tools (only 2 visible at a time, locked to your buddy's top stats)
• Buddy Companion Mode, your buddy watches the session and drops quips every 4-8 messages
• TUI builder (buddy-mcp-build) for custom buddies and sprite sharing
• Affection token economy, shiny variants, hat accessories at Rare+

Install:
npm install -g @lyellr88/buddy-mcp
claude mcp add buddy-mcp buddy-mcp

Full release notes + technical breakdown: https://github.com/Lyellr88/buddy-mcp/releases/tag/v1.4.4

Repo: https://github.com/Lyellr88/buddy-mcp