Claude Code Secrets

Claude Code Secrets

Every hidden feature, internal codename, slash command, keyboard shortcut, environment variable, and feature flag found in the Claude Code source code.

**The source code ships with the npm package. They just didn't expect anyone to actually read all of it.**

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The 10 Craziest Things Buried in the Source Code

1. There's a Full Tamagotchi Pet System

Claude Code has an entire virtual pet companion hidden behind the `BUDDY` feature flag.

• 18 species: Pebblecrab, Dustbunny, Mossfrog, Twigling, Dewdrop, Puddlefish, Cloudferret, Gustowl, Bramblebear, Thornfox, Crystaldrake, Deepstag, Lavapup, Stormwyrm, Voidcat, Aetherling, Cosmoshale, Nebulynx
• Rarity tiers: Common (60%) > Uncommon (25%) > Rare (10%) > Epic (4%) > Legendary (1%)
• 1% shiny variant (independent of rarity)
• 5 procedural stats: DEBUGGING, PATIENCE, CHAOS, WISDOM, SNARK (0-100 each)
• Claude writes a unique AI-generated "soul" personality for each pet at first hatch
• Uses Mulberry32 PRNG for deterministic per-user species generation

2. Claude Literally Dreams While You Sleep

A system called **autoDream** runs a background subagent that consolidates your memory files when you're idle.

• Three-gate trigger: 24 hours since last dream + at least 5 sessions + must acquire a consolidation lock
• Four phases: Orient → Gather Recent Signal → Consolidate → Prune and Index
• The prompt literally says: "You are performing a dream"
• Keeps your MEMORY.md under 200 lines and ~25KB
• The dream subagent gets read-only bash access
• GrowthBook gate: tengu_onyx_plover

3. ULTRAPLAN — 30-Minute Cloud Thinking Sessions

Offloads complex planning to a remote Cloud Container Runtime (CCR) session running **Opus 4.6** for up to **30 minutes**.

• Browser-based approval UI for watching and approving the plan in real-time
• 3-second polling for results
• Teleports the result back to your terminal via a sentinel called __ULTRAPLAN_TELEPORT_LOCAL__