get_gitea_login_for_host() returned the FIRST tea login matching the host. With 43 logins on this host, roughly half match one server, so a seat whose own login was missing silently acted as whichever identity happened to sort first. That satisfies gate 16 mechanically (an author and a reviewer exist) while violating it (both are the same actor under two names). A seat now declares itself via MOSAIC_GIT_IDENTITY or `git config mosaic.gitIdentity`, and resolution derives the canonical login name from that identity plus the instance (`<instance>-<seat>`). If that login is absent it fails closed with a named error and the command to create it. It never borrows. Same rule on the --repo override path, which had it worse: it fell through to get_default_tea_login(), i.e. the default-marked login or, failing that, the first login of ANY host -- an identity chosen by config file order. The four callers now pass the owner so the instance can be derived. With no identity set (a human at a terminal) the old fallback is unchanged, which is the same point at which the token path stops enforcing. lane-brief.sh mapped owners straight to the SHARED `usc` / `mosaicstack` logins. The ladder now goes first there, and a seat that cannot resolve its own login exits rather than falling through to a shared one. Also adds tools/fleet/seat-logins.sh: projects seat credentials into tea logins under canonical names, so the name this code requires is one an operator can mechanically produce rather than hand-maintain. Test notes: - The suite had TWO sandbox helpers, run_in_repo and a near-copy run_in_repo2. The copy drifted: it never got the identity unset, so the suite kept failing on a provisioned seat after the original was already fixed. run_in_repo2 now delegates, so the guarantee lives in one place. - New coverage for both ladder branches (login present -> used; absent -> named error and NOTHING on stdout, proving it did not borrow the matching login sitting right there), both identity rungs, the --repo path, and explicit GITEA_LOGIN outranking the ladder. Each verified by injecting the regression it claims to catch and confirming it goes red. - test-issue-create-body-safety.sh now pins the no-identity case; its subject is body quoting, and an ambient seat identity made it fail for an unrelated reason. - test-issue-close-fail-closed.sh derives its fixture login from the runner's identity. This does not make it hermetic and does not claim to: its API-path cases need a real credential for the runner's own identity, so it passes only where the runner owns one, on this branch and on its base alike. Pre-existing, documented in the PR rather than papered over.
@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="[email protected]"
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 pointed at the loopback proxy;
the entire credential-bearing env family (ANTHROPIC_*, AWS_*, GOOGLE_CLOUD_*,
GOOGLE_APPLICATION_CREDENTIALS, *_TOKEN, *_KEY, *_SECRET, …) is stripped
from the composed environment. The Bedrock/Vertex routing switches
(CLAUDE_CODE_USE_BEDROCK, CLAUDE_CODE_USE_VERTEX, and the _SKIP_*_AUTH
pair) are force-removed regardless of value — otherwise their mere presence
would route Claude Code to the real Anthropic API via AWS/GCP and bypass the
proxy. 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.