Sephera – AST-compressed context packs and native MCP server in Rust
Tree-sitter AST compression cuts LLM context tokens 50-70% while preserving API structure.
AST-native code refactor without LLMs, but for LLMs
AST-native sed that handles nested brackets better than regex ever could.
Backend developers and DevOps engineers writing refactoring scripts
ast-grep · Comby · Semgrep
Tree-sitter AST compression cuts LLM context tokens 50-70% while preserving API structure.
Tree-sitter interface extraction cuts token usage by 6x, but chat context window optimization is becoming table stakes.
Tree-sitter + Rhai scripts replace opinionated formatters, but beta stability and language coverage remain questions.
AST-aware codebase search and onboarding beats grep, ships as local MCP server.
Tree-sitter + agentic flow ~50x faster than raw LLM calls, but codebase visualization is crowded category.
Beats CodeQL on CWE-Bench with optional LLM enhancement mode.