What problem does it solve? Manually editing agent directive files to add a standing /synthesize route risks inconsistent wording, conflicting rules, and unsafe file modifications. This Skill installs, updates, or removes one managed route block with explicit consent, backups, and verified atomic replacement. ## Core Features & Use Cases - Consent-bound edits: Shows the exact per-file diff and byte hashes before writing, and approval binds to the target, operation, and both byte hashes. - State classification: Classifies each directive file as MANAGED, COMPATIBLE, PARTIAL, UNMANAGED, CONFLICT, or MALFORMED, and applies a strict operation matrix so conflicting or malformed files are never touched. - Safe replacement: Uses exclusive-create backups, same-directory staging files, hash verification, and atomic same-filesystem replacement, stopping on symlinks or missing atomicity guarantees. - Use Case: You want every agent session to load /synthesize before composing substantive output. Run /synthesize-init, review the proposed diff for your CLAUDE.md or AGENTS.md, approve it, and the managed block is inserted with a verified backup. ## Quick Start Ask the agent to run /synthesize-init and wire the synthesize route into your existing directive file, then approve the displayed diff.