2d821324fe
Two residual over-rejections in the PyYAML-absent fallback of
get_gitea_token_for_login, both fail-closed today but diverging from
real PyYAML 6.0.3 for valid inputs. Neither is a fail-open; the fix
loosens ONLY to exact PyYAML parity and keeps failing closed elsewhere.
Blocker A - embedded printable line break inside a quoted scalar.
The fallback split the raw document with str.splitlines(), which breaks
at NEL(U+0085), LS(U+2028) and PS(U+2029) -- all PRINTABLE to PyYAML's
Reader. Inside a flow (quoted) scalar PyYAML does not break at these: it
line-folds a double/single-quoted scalar (NEL/LF/CR -> one space; LS/PS
verbatim), resolving one token, while splitlines() cut mid-quote and
failed the whole document closed. Replace splitlines() with
_split_logical_lines, a quote-aware splitter that reproduces PyYAML's
flow folding (scan_flow_scalar_spaces/breaks) and raises on a col-0
doc marker (---/...) in a folded continuation. The same code points
UNQUOTED or in a comment still make PyYAML raise, so those stay closed.
Blocker B - leading non-specific tag / anchor property. The recognizer
blanket-rejected any scalar starting with '!' or '&'. But '! ' (bang +
space) and '&name ' are transparent node properties: PyYAML strips them
and applies normal implicit typing, so '! x'/'&a x' resolve the string
'x'. Add _strip_properties, consuming <=1 non-specific tag and <=1 anchor
(either order) and recursing on the remainder. '!x' (tag handle),
'!foo x', non-string nodes ('! 123'), duplicate properties and explicit
tags ('!!str x') still fail closed.
Fallback now matches real PyYAML 6.0.3 (oracle) on a two-direction
differential fuzz of the full Unicode line-break set x {double, single,
plain, comment, token-position} and the full leading tag/anchor space:
833 cases, 0 fail-opens, 0 present-mismatches, 52 endorsed fail-closed
over-rejects (blank-line-in-quote \n folds; explicit !!str/verbose tags;
property+quoted; anchor-without-space). Wrapper scripts pr-review.sh and
issue-comment.sh unchanged (0-line diff). Tests: additions-only sections
23 (quoted-scalar breaks) and 24 (tag/anchor properties).
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 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.