{"version":"2.1.301","anchor":"lean-read-and-grep-tool-descriptions-add-a-leanrewrite-varia","canonical_anchor":"lean-read-and-grep-tool-descriptions-add-a-leanrewrite-varia","heading":"Groundwork for shorter Read, Grep and Agent tool instructions","tier":"soon","area":"Tool Prompts","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.301\/e\/lean-read-and-grep-tool-descriptions-add-a-leanrewrite-varia","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.301","markdown":"### Groundwork for shorter Read, Grep and Agent tool instructions\n\nClaude Code can now build alternate shorter instructions for the Read, Grep and Agent tools, but none are in use yet\n\n**What**\n\nEach tool Claude can use comes with written instructions telling Claude how to use it. The instructions for the Read tool (reading files), the Grep tool (searching file contents) and the Agent tool (starting subagents) can now be built in an alternate shortened form, chosen based on the model in use. No instructions Claude actually receives changed in this release. The Agent tool's description in this release's capture is the same length as in the previous one.\n\n**Why**\n\nThis is groundwork for trying shorter tool instructions. Nothing changes for you yet.\n\n- Area: Tool Prompts\n- Tier: Nothing to try yet\n- Useful: 2\/5\n- Signal: 4\/5\n- Scope: individual\n- Heads-up: no\n- Present in the build but not switched on"}