{"version":"2.1.294","anchor":"the-sendmessage-tool-description-gained-text","canonical_anchor":"the-sendmessage-tool-description-gained-text","heading":"Claude's instructions for the SendMessage tool gained text for some accounts","tier":"soon","area":"Agent Messaging","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.294\/e\/the-sendmessage-tool-description-gained-text","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.294","markdown":"### Claude's instructions for the SendMessage tool gained text for some accounts\n\nText was added to the SendMessage tool instructions Claude receives under some account settings, including an example message to a worker\n\n**What**\n\nTools such as `SendMessage` come with written instructions that tell Claude how to use them. Under certain account settings, those instructions as Claude Code actually sends them have gained text, including this example message: `{\"to\": \"worker\", \"message\": \"check if tests pass over there\"}`. The default, stock description of `SendMessage` has not changed.\n\n**Why**\n\nClaude follows these instructions, so added text here can change how and when it sends messages. What the added text changes in practice has not been measured.\n\n- Area: Agent Messaging\n- Tier: Nothing to try yet\n- Useful: 2\/5\n- Signal: 3\/5\n- Scope: individual\n- Heads-up: no\n- Present in the build but not switched on"}