{"version":"2.1.282","anchor":"unknown-tool-errors-now-suggest-the-correctly-cased-tool-nam","canonical_anchor":"unknown-tool-errors-now-suggest-the-correctly-cased-tool-nam","heading":"Tool-name errors now suggest the correct capitalization","tier":"notice","area":"Tool Calls","url":"https:\/\/changelogs.core-directive.com\/v\/2.1.282\/e\/unknown-tool-errors-now-suggest-the-correctly-cased-tool-nam","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.282","markdown":"### Tool-name errors now suggest the correct capitalization\n\nWhen Claude calls a tool with the wrong capitalization, the error now names the correctly spelled tool\n\n**What**\n\nClaude uses tools (built-in actions such as running a shell command) by name. When Claude calls a tool name that does not exist and exactly one available tool matches it apart from capitalization, the error now ends with a hint: tool names are case-sensitive, and it names the tool to call instead. Before, the error had no hint.\n\n**Why**\n\nIf Claude writes a name like \"bash\" instead of \"Bash\", it gets a direct correction and can retry with the right name instead of just being told the tool is unknown.\n\n- Area: Tool Calls\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 1\/5"}