Tools
Find answers about Tools, from setup to everyday use.
Do the tools cost extra?
No. All 110 are part of the agent on every plan, the free one included. You pay for what a step actually uses - a model turn, a web capture, a conversion. Reading your own files costs nothing at all.
Where do the file tools run?
On the device you are on. From a computer they work on that computer's files through the SDK; from a phone they work on that phone's own files. Nothing is copied to our servers to be read.
Can I stop a tool?
Yes. Four modes decide what is asked: Plan reads only, Ask asks before every change, Auto lets ordinary writes through, and Full access still asks before sending, publishing or spending.
Can I add my own tools?
Yes, three ways. Custom tools beside the built-in ones; skills and sub-agents, which belong to your account and work from any device; and any MCP server, since the SDK is an MCP client — no adapter to write.
Why does reading a local file cost no credits?
A local read uses the file tool on your device; credits apply to billable work performed during the run.
How can I narrow a web search to more useful results?
State the subject precisely and use filters such as language, region, recency, and a result limit when they matter.
Can the file tools organize files into folders?
Yes. They can list folders, create them, and move or remove files on the device where the session runs.
When should I fetch a webpage after searching for it?
Search helps locate candidate pages; fetching opens a specific page so you can inspect its content and decide whether it supports the task.
Why should I search for a page before fetching it?
Search helps locate relevant pages; fetch retrieves the contents of a specific URL so the agent can inspect it.
Can I limit which tools an agent is allowed to use?
Yes. Provide only the tools the agent needs for the task; the available tool set determines which actions it can consider.
How can I tell what a tool actually did during an agent run?
Review the recorded run steps, including the tool name, summary, result, and any error; use that evidence to verify the action instead of relying only on the agent's final message.
What should I do if fetching a webpage returns only a sign-in page?
Use a source that is publicly accessible to the fetch tool, or provide the relevant text yourself; do not assume the tool can use your browser's private session.