Codegraph: Pre-indexed knowledge graph cuts Claude/Cursor tool calls by 94%
Colbymchenry released Codegraph, a tool that leverages Claude's Explore Agents to build and query a pre-indexed knowledge graph — containing symbol relationships, call graphs, and code structure — instead of scanning files repeatedly. According to the author, this reduces API tool calls by up to 94% and speeds up agent usage by roughly 77%.
Benchmark results
| Codebase | With CG | Without CG | Improvement |
|---|---|---|---|
| VS Code (TypeScript) | 3 calls, 17s | 52 calls, 1m 37s | 94% fewer, 82% faster |
| Excalidraw (TypeScript) | 3 calls, 29s | 47 calls, 1m 45s | 94% fewer, 72% faster |
| Claude Code (Python+Rust) | 3 calls, 39s | 40 calls, 1m 8s | 93% fewer, 43% faster |
| Claude Code (Java) | 1 call, 19s | 26 calls, 1m 22s | 96% fewer, 77% faster |
| Alamofire (Swift) | 3 calls, 22s | 32 calls, 1m 39s | 91% fewer, 78% faster |
| Swift Compiler (Swift/C++) | 6 calls, 35s | 37 calls, 2m 8s | 84% fewer, 73% faster |
The tool is open source and runs locally, meaning no code is sent to external APIs for indexing. For developers using Claude, Cursor, Codex, or OpenCode API agents, this directly reduces the number of tool calls — which is especially relevant given the recent Claude API pricing model.
Who it's for: Developers using AI coding agents on medium-to-large codebases who want to cut API costs and speed up agent response times.
📖 Read the full source: r/LocalLLaMA
👀 See Also
Claude Hindsight: Observability Tool for Claude Code Sessions
Claude Hindsight is an open-source observability layer for Claude Code that captures tool calls, tokens, and errors into an explorable dashboard. The creator used it to refactor an open-source project in a single 11-hour session with 733 tool calls and 692.8M cache tokens.
Claude Text Adventure Skill v1.1.0 Adds Campaign Arcs and Enhanced NPCs
The Claude text adventure skill update v1.1.0 introduces campaign arcs where character progression persists across adventures, NPCs with hidden stats and levels, and optional visual/audio modules. Download text-adventure.zip from GitHub releases to use with Claude Desktop or claude.ai.
Memtrace: Persistent, Time-Aware Codebase Memory for Claude Code Agents
Memtrace provides always-fresh snapshots and bi-temporal replay for Claude Code agents, using Tree-sitter AST parsing and hybrid retrieval (BM25 + Jina-code embeddings) with zero LLM inference cost during indexing.
OpenTidy: Open-Source Background Assistant Using Claude Code for Admin Tasks
OpenTidy is an open-source macOS service that spawns persistent Claude Code sessions to handle admin tasks like invoices, forms, and communication triage. It runs up to 10 parallel jobs with Telegram notifications for sensitive actions.