42 lines
5.1 KiB
Markdown
42 lines
5.1 KiB
Markdown
---
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name: MCP Memory Centrality & Safety
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description: Strict guidelines for interacting with the mcp-memory server, ensuring it remains the central brain and is never forcefully shut down.
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---
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# MCP Memory Centrality & Safety
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## 1. Safety & Port Constraints (NEVER SHUT DOWN)
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- **CRITICAL**: NEVER attempt to shut down, kill, or send a POST `/shutdown` request to the `mcp-memory` server (typically running on port 3000).
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- If a port conflict occurs (e.g., a Rust panic `AddrInUse` during a `git push` gatekeeper check), **STOP** and immediately notify the user. Do not attempt to auto-resolve the conflict by killing the existing memory server process.
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## 2. Proactive "Central Brain" Usage
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> [!NOTE] Two-Tier Memory Architecture
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> 1. **Tier 1 (Static Markdown)**: Repository rules, coding style, tech constraints, and architectural boundaries belong in static git-tracked markdown (`rules/*.md`, `instructions.md`) and system prompts for 0ms latency and deterministic turn-0 enforcement.
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> 2. **Tier 2 (Structured DB & Telemetry)**: The MCP Memory server specializes in high-volume, dynamic data: file modification ledgers (`audit_ledger`), terminal command history, error resolutions (`log_error_fix`), active tasks, and preflight context aggregation.
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The MCP Memory server is the central brain. You must be PROACTIVE, not reactive, in using it:
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- **Session Starts & Context Drops**: Always begin by calling `tasks` (action: "list"), `pinned_files` (action: "list"), and `sticky_notes` (action: "read").
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- **Sticky Notes**: Use `sticky_notes` (action: "add") for transient, session-scoped operational constraints (e.g., "Do not touch file X until Y is done"). Deletion supports both 1-based index (standard) and 0-based index 0.
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- **Error Fixes**: The moment a tricky, undocumented, or environment-specific bug is resolved (e.g., Bitbucket markdown rendering quirks, nuanced framework bugs), IMMEDIATELY call `log_error_fix`. Supply `repo_name`, `error_category`, and `stack_trace` so future searches can perform embedding-based match.
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- **Tech Debt**: If you notice an anti-pattern (e.g., nested `if` statements, arrow anti-pattern) but deliberately skip fixing it to focus on a feature, IMMEDIATELY call `tech_debt` (action: "log") with `description`, `file_path`, `line_range`, `workaround`, `effort_estimate`, and `severity`.
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- **Architectural Decisions (ADR)**: When selecting design patterns, crate choices, or system structure, call `decisions` (action: "log") with `author`, `affected_components`, `alternatives_considered`, `decision`, and `consequence`.
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- **Task Management**: When creating tasks, supply `priority` ('low'|'medium'|'high'|'urgent'), `assigned_agent` (e.g. subagent role), `verification_command` (automated test command), and `acceptance_criteria`.
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- **VCS & SVN Agnosticism**: Supply `vcs_type` ('git'|'svn'|'hg'), `vcs_revision` (git hash or svn revision like 'r12345'), and `upstream_url` to `log_code_change` and workspace tools.
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- **Terminal & Shell Context**: Terminal sessions and commands are automatically tracked in the server. Query `/terminal/history` or recent logs when analyzing shell execution context.
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## 3. Delegation
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Continue to use the `MemoryLibrarian` subagent to log routine code changes (`log_code_change`) in the background to prevent cluttering the main conversation context.
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## 4. Performance & Batching Rules
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- **Batch Mutating Operations**: When creating or updating multiple graph entities, code snippets, or observations, always batch items into a single tool call array (e.g. `create_entities` with multiple items) to leverage the server's single-pass transaction flush.
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- **High-Signal Tool Confirmations**: Tool call execution responses return structured, informative summaries (entity names, types, created counts, and edge paths). Agents DO NOT need to invoke follow-up `open_nodes` calls purely to confirm successful creation.
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- **Tantivy Search Reader Refresh**: Search queries (`omni_search`, `search_nodes`) automatically reload pending commits prior to executing searches, ensuring immediate visibility of newly created items.
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- **Bounded Telemetry Buffers**: High-volume telemetry logs (`error_fixes` max 300, `ledger` max 500, `handoff_memos` max 200, `session_summaries` max 200, `agent_signals` max 500) enforce deterministic length caps to guarantee low memory footprints over long sessions.
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## 5. Pure Native Rust Invariants & Security
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- **Zero External Subprocesses**: Native system handlers (`clipboard`, `ast`, `search`, `db`) MUST use pure native Rust crates (`arboard`, `tree-sitter`, `tantivy`, `psycopg`). Subprocess calls to `powershell.exe`, `wl-paste`, `xclip`, or `cmd.exe` are strictly banned in native handlers.
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- **Transient Lock Handling**: Transient OS handle collisions (e.g. Win32 OLE `OpenClipboard` locks) must be handled natively with retry loops and backoffs in Rust.
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- **Atomic Serialization Scope**: All store updates (`Store::modify` / `modify_async`) perform state mutation and JSON serialization inside an atomic write lock scope to guarantee thread-safe `DbWriteQueue` synchronization.
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- **Path Traversal Guards**: AST and file handler operations enforce path canonicalization (`validate_safe_path`) to prevent directory traversal vulnerabilities (`..`).
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