ab8c9a2d4b
Second and final PR for `mosaic [yolo] claudex` — runs GPT models inside the Claude Code harness via claude-code-proxy (ChatGPT-subscription OAuth). Builds on the PR-1 preflight/lifecycle library (#793). New `claudex.ts` (pure / dependency-injected composition): - resolveClaudexConfigDir / assertIsolatedConfigDir — the isolated CLAUDE_CONFIG_DIR seam. HARD REQ 1 (provable isolation): canonicalizes both sides, rejects `~/.claude` and any descendant, ensures the dir 0700, then re-checks post-create and rejects a symlinked target (TOCTOU). Ambient CLAUDE_CONFIG_DIR is never inherited. Fails closed on any uncertainty. - buildClaudexEnv — HARD REQ 2 (zero token leakage): strips the entire credential-bearing env family (ANTHROPIC_*, *_TOKEN, *_API_KEY, *_SECRET, CLAUDE_CODE_OAUTH*) and hands Claude Code only ANTHROPIC_AUTH_TOKEN=unused. Never reads the proxy credential file. Returns a fresh object (no mutation). - resolveClaudexModels — P3 tier map: primary→gpt-5.6-sol, small/fast→gpt-5.6-luna; operator env values win. - buildClaudexBanner / buildClaudexContractNote — P4 EXPERIMENTAL classification (no token material by construction). - runClaudexProxyGate — preflight → device reauth (only when needed) → ensure a trusted-live listener → re-preflight; surfaces non-sensitive problems only. - launchClaudex — fail-closed DI orchestration: preflight → gate → compose env → exec; never reaches exec on a gate failure or guard throw. Proxy endpoint imported from claudex-proxy.ts (single source of truth). launch.ts wiring: - execRuntime gains an env parameter. - `claudex` + `yolo claudex` commander dispatch (keeps the #454 arg-slice fix); claudexHandler is an injectable seam for the wiring tests. - launchClaudexProduction glue assembles the real harness adapter. Tests: 45 claudex specs + 5 launch wiring specs, TDD red-first. New-module coverage 99% stmts/lines, 93% branch (≥85% gate). Full mosaic suite 1164 green; typecheck / lint / format:check green. Refs #790 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
@mosaicstack/mosaic
CLI package for the Mosaic self-hosted AI agent platform.
Usage
mosaic wizard # First-run setup wizard
mosaic gateway install # Install the gateway daemon
mosaic config show # View current configuration
mosaic config hooks list # Manage Claude hooks
Headless / CI Installation
Set MOSAIC_ASSUME_YES=1 (or ensure stdin is not a TTY) to skip all interactive prompts. The following environment variables control the install:
Gateway configuration (mosaic gateway install)
| Variable | Default | Required |
|---|---|---|
MOSAIC_STORAGE_TIER |
local |
No |
MOSAIC_GATEWAY_PORT |
14242 |
No |
MOSAIC_DATABASE_URL |
(none) | Yes if tier=team |
MOSAIC_VALKEY_URL |
(none) | Yes if tier=team |
MOSAIC_ANTHROPIC_API_KEY |
(none) | No |
MOSAIC_CORS_ORIGIN |
http://localhost:3000 |
No |
Admin user bootstrap
| Variable | Default | Required |
|---|---|---|
MOSAIC_ADMIN_NAME |
(none) | Yes (headless) |
MOSAIC_ADMIN_EMAIL |
(none) | Yes (headless) |
MOSAIC_ADMIN_PASSWORD |
(none) | Yes (headless) |
MOSAIC_ADMIN_PASSWORD must be at least 8 characters. In headless mode a missing or too-short password causes a non-zero exit.
Example: Docker / CI install
export MOSAIC_ASSUME_YES=1
export MOSAIC_ADMIN_NAME="Admin"
export MOSAIC_ADMIN_EMAIL="admin@example.com"
export MOSAIC_ADMIN_PASSWORD="securepass123"
mosaic gateway install
Runtime launchers
mosaic claude # Launch Claude Code with Mosaic injection
mosaic yolo claude # …with --dangerously-skip-permissions
mosaic codex | opencode | pi
mosaic claudex (EXPERIMENTAL)
Runs GPT models inside the Claude Code harness by pointing Claude Code at a
local claude-code-proxy that
translates the Anthropic Messages API to a ChatGPT-subscription (Codex OAuth)
backend. This is not Anthropic Claude — model behavior, tool use, and output
quality may differ. Intended for evaluation, not production delivery.
mosaic claudex # launch (prompts through the proxy readiness gate)
mosaic yolo claudex # …with --dangerously-skip-permissions
mosaic claudex --print "hello" # trailing args are forwarded to Claude Code
Prerequisite: the claude-code-proxy binary must be installed and
authenticated (claude-code-proxy codex auth …). mosaic claudex runs a
preflight that verifies the binary, the OAuth state (triggering a device re-auth
if needed), and a trusted local listener before launching; it fails closed
if the proxy cannot be brought up with a verified identity.
Isolation (never touches your real Claude state). claudex always launches
against an isolated CLAUDE_CONFIG_DIR (default ~/.config/mosaic/claudex/home).
The ambient CLAUDE_CONFIG_DIR is deliberately ignored, and a guard proves the
resolved dir can never be — or live under — the real ~/.claude. A claudex
session therefore cannot mutate your normal Claude Code config.
No token leakage. claudex never reads the proxy's credential file. Claude
Code is handed only ANTHROPIC_AUTH_TOKEN=unused; the entire credential-bearing
env family (ANTHROPIC_*, *_TOKEN, *_API_KEY, *_SECRET, …) is stripped
from the composed environment. The proxy holds the real OAuth credential.
Model tiers (override via env).
| Tier | Env var | Default |
|---|---|---|
| primary (opus/sonnet) | ANTHROPIC_MODEL |
gpt-5.6-sol |
| small/fast (haiku) | ANTHROPIC_SMALL_FAST_MODEL |
gpt-5.6-luna |
Operator-provided values win over the defaults. Additional overrides:
MOSAIC_CLAUDEX_CONFIG_DIR (isolated config dir), ANTHROPIC_BASE_URL (proxy
endpoint).
Hooks management
After running mosaic wizard, Claude hooks are installed in ~/.claude/hooks-config.json.
mosaic config hooks list # Show all hooks and enabled/disabled status
mosaic config hooks disable PostToolUse # Disable a hook (reversible)
mosaic config hooks enable PostToolUse # Re-enable a disabled hook
Set CLAUDE_HOME to override the default ~/.claude directory.