Source Intelligence
Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.251 Feeds RSS JSON llms.txt
Reading a new release v2.1.251 Analysing changes · 2/5 Sorting the findings · 1/4 steps 470 findings $18.91 so far

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Prompt capture

v2.1.196 tool descriptions

Agent SDK, print mode

24 tools, as the client described them to the model in this release. Where a tool has more than one description the difference is usually a single interpolated string.

Agent Launch a new agent to handle complex, multi-step tasks. 1,227 chars · 2 variants Read → Bash Executes a bash command and returns its output. 1,218 chars · 16 variants Read → CronCreate Schedule a prompt to be enqueued at a future time. 2,924 chars Read → CronDelete Cancel a cron job previously scheduled with CronCreate. 167 chars Read → CronList List all cron jobs scheduled via CronCreate, both durable (.claude/scheduled_tasks.json) and session-only. 106 chars Read → Edit Performs exact string replacement in a file. 360 chars · 2 variants Read → EnterWorktree Use this tool ONLY when explicitly instructed to work in a worktree — either by the user directly, or by project... 3,031 chars Read → ExitWorktree Exit a worktree session created by EnterWorktree and return the session to the original working directory. 1,923 chars Read → NotebookEdit Replaces, inserts, or deletes a single cell in a Jupyter notebook (.ipynb file). 619 chars Read → Read Reads a file from the local filesystem. 838 chars · 2 variants Read → ReportFindings Report code-review findings as a typed list so the host UI can render them. 574 chars Read → ScheduleWakeup Schedule when to resume work in /loop dynamic mode — the user invoked /loop without an interval, asking you to... 2,802 chars Read → SendMessage # SendMessage Send a message to another agent. 655 chars Read → Skill Execute a skill within the main conversation When users ask you to perform tasks, check if any of the available skills... 1,713 chars Read → TaskCreate Use this tool to create a structured task list for your current coding session. 2,146 chars Read → TaskGet Use this tool to retrieve a task by its ID from the task list. 732 chars Read → TaskList Use this tool to list all tasks in the task list. 998 chars Read → TaskOutput DEPRECATED: Background tasks return their output file path in the tool result, and you receive a <task-notification>... 1,049 chars Read → TaskStop - Stops a running background task by its ID - Takes a task_id parameter identifying the task to stop - Returns a... 203 chars Read → TaskUpdate Use this tool to update a task in the task list. 2,243 chars Read → WebFetch Fetches a URL, converts the page to markdown, and answers `prompt` against it using a small fast model. 374 chars · 2 variants Read → WebSearch Search the web. 309 chars · 2 variants Read → Workflow Execute a workflow script that orchestrates multiple subagents deterministically. 18,780 chars Read → Write Writes a file to the local filesystem, overwriting if one exists. 240 chars · 2 variants Read →