How does Nexus maintain codebase knowledge across sessions?

Nexus uses two tiers of persistent memory: short-lived session memory (`nexus_remember`) for recent decisions and a long-lived concept graph (`nexus_concept`) for architectural notes and patterns.

Nexus is a semantic codebase graph engine designed for Claude Code, giving AI agents instant, intelligent awareness of your entire project without manual context pasting.

Which programming languages does Nexus support?

Nexus supports 12 languages out of the box, including Python, Rust, JavaScript, TypeScript, C, Go, Java, Ruby, PHP, Kotlin, Swift, Zig, and Solidity, using tree-sitter for parsing.

How does Nexus benefit Claude Code users?

It provides Claude Code with real-time codebase understanding, drastically reducing context needs by up to 93.4% compared to naive grep, ensuring efficient and accurate AI interactions.

Nexus

Name: Nexus
Author: Obelus-Labs-LLC

byObelus-Labs-LLC

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Provides Claude Code with instant, semantic awareness of entire codebases by building and ranking a symbol graph.

Nexus is a semantic codebase graph engine that supercharges Claude Code, granting it instant, comprehensive awareness of your entire project without manual context pasting. It scans projects with tree-sitter, constructs a detailed symbol graph, and intelligently ranks files using a fusion of BM25F, PageRank, RRF, and recency, ensuring Claude always starts a session with the most relevant code. This approach dramatically reduces context noise, with benchmarks showing over 93% median context reduction compared to naive grep, leading to highly efficient and accurate LLM-assisted coding sessions.

主な機能

01Supports 12 programming languages out of the box using tree-sitter for parsing.

02Advanced ranking system combining BM25F, PageRank, RRF, recency, and optional embeddings.

03Compiler-grade code intelligence for Python (definitions, references, signatures, infer) via jedi.

04Enables surgical semantic refactoring operations like extract, inline, and move with diff preview.

05Maintains two tiers of persistent knowledge: short-lived session memory and a long-lived concept graph.

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ユースケース

01Equip Claude Code with an always-current and deeply semantic understanding of any codebase for enhanced AI-assisted development.

02Automate code context provision for LLMs to eliminate manual pasting and ensure relevant information is available at session start.

03Execute complex, cross-file refactoring operations with semantic intelligence and automatic import/call-site fixups.