heuristicolab/ctxfw
High-assurance in-memory Tree-Sitter AST context firewall and pruning MCP server for coding agents (-72.4% token mass).
7 best points · 0 comments · 4 Hacker News posts · 7 GitHub stars · View on GitHub
Hacker News discussions
- Ctxfw – In-memory Tree-sitter AST compactor that cuts coding tokens by 72% (7 points, 0 comments, by mikemo88, 2026-09-22)
- Show HN: Ctxfw – AST context firewall that cuts agent prompt tokens by 67% (5 points, 0 comments, by mikemo88, 2026-09-29)
- Show HN: Ctxfw – In-memory AST pruner and token firewall for Cursor and Claude (3 points, 0 comments, by mikemo88, 2026-09-25)
- Show HN: We benchmarked AST stubbing trade-offs on Airflow and Zulip (ctxfw) (1 points, 0 comments, by mikemo88, 2026-10-06)