Poco / blog

The blog.

Guides and notes on cutting LLM token costs in AI coding agents.

• Where your context window actually goes

  2026-06-28

  A segment-by-segment look at what fills an AI coding agent's context window - system prompt, tool definitions, MCP servers, skills, and the conversation - and which parts you re-pay on every single turn.

• How Poco compresses your prompts (without garbling them)

  2026-06-18

  A look at how Poco shrinks the prompts you send to Claude Code, Codex, and Cursor - extractive sentence selection, content-type awareness, and a quality gate that fails safe to your original.