Search vs this-task context
Last updated 12 September 2026
| RAG for code | Hexum | |
|---|---|---|
| Unit | Embedded chunks | This turn’s files, then one symbol |
| Protocol | Whatever the app uses | MCP at https://hexum.dev/mcp |
| Architecture gate | Usually none | hexum_check, no LLM |
This is not a takedown of RAG. It is a different job: turn-scoped context plus a deterministic import check. hexum_shrink.
FAQ
How does Hexum cut what I pay the model?
Your agent stops dumping the whole repo into the prompt. Hexum sends this task, not every file. On the published card, MBPP context dropped 85.2% and the combined 24-task cut is 87.6%, with 24/24 tests still passing. Tokens are ceil(utf8_bytes/4), not a provider invoice. See /benchmarks.
What is Hexum?
Hexum is a developer ecosystem for coding agents in Cursor, Claude Code, and the rest. One API key. Five products and twelve tools today: spend less on each prompt, block bad imports, review pull requests, stop the agent looping, and only keep building when checks pass. We do not keep your code.
Does Hexum store my repo?
No. We do not keep the code your agent sends. We do not train on it. Policy: /zdr.