Tools¶

The model requests tools; gdc checks permissions before executing them. Available tools depend on the selected profile and configured extensions.

Built-in operations¶

Tool	Operation
`Read`	Read a file or a range of lines
`Write`	Create or replace a file
`Edit`	Replace a matching text fragment
`Bash`	Execute a shell command
`Glob`	Find paths by glob pattern
`Grep`	Search file contents
`WebFetch`	Fetch a web page
`TodoWrite`	Update the task list
`Lsp`	Query definitions, references and symbol information
`Skill`	Load a named instruction set
`MemoryRead`, `MemoryList`, `MemorySearch`	Inspect durable notes
`MemoryWrite`, `MemoryDelete`	Change durable notes

Tool	Operation
`Task`	Run a delegated task and wait for its result; optional background execution
`AgentTool`	Start a persistent worker and return its id
`SendMessage`	Send another assignment to a worker
`AgentStop`	Cancel a worker
`TaskList`, `TaskOutput`, `TaskStop`	Inspect and stop background Bash jobs

Workers receive their own saved sessions. See Subagents and background jobs.

Extension	Adds
MCP	Tools from local programs and HTTP services
WASM plugins	Packaged tools and hooks
Skills	Procedures loaded on demand
Language servers	Symbol navigation

Tool failures are reported to the model. Completed tool results are saved in the session.