Core file operations module implementing secure read/write/edit/tail/head with atomic write semantics (write to temp file, then rename), diff-based edits with dry-run support, and path traversal prevention. Demonstrates a reusable, security-conscious file I/O layer that could be extracted for any project requiring safe file manipulation.

KnowledgeGraphManager implementing CRUD operations on a JSONL-backed entity-relation-observation graph with mutation serialization (queue + lock) and atomic save (temp file + rename). Shows a robust pattern for concurrent graph persistence that is domain-agnostic and extractable.

Security-critical path validation utilities that resolve symlinks, detect Unicode equivalence ambiguities, and check allowed directories. Implements defense-in-depth against path traversal and race conditions (TOCTOU awareness). A self-contained module reusable in any security-sensitive application.

SequentialThinkingServer class managing a tree of thoughts with branching, revision history, and scoring. Provides a generic state-machine pattern for structured reasoning that could be extracted for non-MCP contexts (e.g., chatbots, decision trees).

Streamable HTTP transport implementation with session-scoped event store, cleanup hooks, and capability negotiation. Demonstrates a clean transport abstraction that separates network concerns from server logic, with patterns reusable for any async messaging protocol.