The server wrote gigabytes to ~/.kicad-mcp/logs and ignored LOG_LEVEL. Three
root causes, all fixed here (the logging carve-out of #182):
- Python (kicad_interface.py): replace the unbounded FileHandler with a
RotatingFileHandler (10 MB x 3 backups, env-tunable via KICAD_MCP_LOG_MAX_BYTES
/ KICAD_MCP_LOG_BACKUP_COUNT); read the level from KICAD_MCP_LOG_LEVEL or
LOG_LEVEL (default INFO) instead of hardcoding DEBUG; mute the noisy
skip / skip.sexp.* loggers to WARNING unless KICAD_MCP_DEBUG_SKIP is set.
- TypeScript (config.ts): honor KICAD_MCP_LOG_LEVEL / LOG_LEVEL for the TS logger.
- TypeScript (logger.ts): size-cap the per-day log files with the same env knobs.
- Docs + a no-network test for the env helpers, skip muting, and that no
unbounded handler targets kicad_interface.log.
Verified: LOG_LEVEL is now applied, skip is muted, and the file rotates instead
of growing forever. Full suite unchanged from baseline.
The hierarchical-sheet rewrite from #182 is intentionally left out (stays as a
separate PR pending the #169/#170 design discussion).
Co-Authored-By: angelorodem <angelorodem@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add Prettier as a dev dependency with .prettierrc.json config and
.prettierignore. Hook added via mirrors-prettier in pre-commit config.
All TypeScript, JSON, Markdown, and YAML files auto-formatted.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add .pre-commit-config.yaml with pre-commit-hooks v5.0.0 (trailing
whitespace, end-of-file fixer, yaml/json checks, large file guard,
merge conflict detection). Add minimal pyproject.toml. Auto-fix
trailing whitespace and missing end-of-file newlines across the
codebase.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit fixes two critical issues for MCP STDIO transport:
1. Logger fix (src/logger.ts) - CRITICAL MCP protocol compliance
- Change all log levels to use console.error() (stderr) exclusively
- Previous code sent info/debug logs to stdout via console.log()
- MCP protocol uses stdout for JSON-RPC messages
- Logging to stdout corrupts protocol communication
- Impact: Prevents intermittent MCP failures from log pollution
2. Windows compatibility fix (src/index.ts)
- Remove import.meta.url conditional check that fails on Windows
- Path separator differences (forward slash vs backslash) cause
the file:// URL comparison to fail
- Server now runs main() unconditionally as intended
- Impact: Reliable server startup on Windows
Changes:
- src/logger.ts: Use console.error() for all log levels
- src/index.ts: Remove 'if (import.meta.url === ...)' check
- src/index.ts: Add explanatory comment about Windows issue
Tested on Windows 11 with KiCAD 9.0.6.
Integration tests confirm 36KB logs to stderr, 0 bytes to stdout.
Fixes: MCP protocol corruption, Windows startup failures
