Files
stack/packages/mosaic
Hermes Agent 3d0a882a63
ci/woodpecker/pr/ci Pipeline was successful
wrapper-guard: model quote removal and escaping as separate operations
Round six of the same class: a program NAME is not one SPELLING. Two findings,
and the second is one this change's own predecessor introduced.

A FOURTH name consumer never went through the shared site. Checkout detection
still recognized git by a raw whole-command regex, so `g"it" clone`, `g'it'
clone` and `g\it clone` into $HOME were all allowed. `/usr/bin/git` blocked only
because the raw text still happened to contain contiguous `git` — the same
passing presentation that established nothing during the curl rounds. It now
uses CMD_NAMES and NAME_PREFIX like the other three, so all four consumers
share one definition of what a name looks like.

Routing it through NAME_PREFIX also repaired an over-block the arm had carried
from the start: the old regex found `git` INSIDE a longer word, so `mygit clone`
and `gitfoo clone` were refused at every previous head. That is the mycurl and
curl-wrapper class, and refusing it is how a guard gets routed around instead
of repaired.

The normalization itself was creating names the shell never runs. It deleted
every backslash regardless of quote context, but a backslash inside single
quotes is literal, so `'cu\rl' --config` names a program called cu\rl and was
refused. The same holds inside double quotes before any character other than
$, `, " or backslash. Both were false positives, and both were regressions —
the pre-PR head allowed them.

Quote removal and escape handling are different operations that were sharing
one context-blind deletion pass. They are now a small state machine that
follows the actual rule: outside quotes a backslash escapes the next character;
inside single quotes everything is literal; inside double quotes a backslash is
special only before $, `, " or backslash. Quote characters drop without
splitting the word, and the substitution flattening that makes `$(which curl)`
resolve to a bare name is unchanged.

An over-block is not the safe direction. A guard that refuses legitimate work
gets routed around rather than fixed, which is the same outcome as a bypass and
arrives faster.

Unchanged and still disclosed: names absent from the literal text — assembled
from braces or variables — remain invisible to text matching, and `$((curl))`
is over-matched at every head including the pre-PR one.

Fixtures: 173 -> 184. Every one added here discriminates against the previous
head 1c3e79a9 (8 fail there: 3 git bypasses, 5 over-blocks), and the positives
also fail at the pre-PR head df83a9ee. Suite green at head, bash -n and
shellcheck clean, enumeration gate 55/38/18.
2026-08-13 04:10:59 -05:00
..

@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.