tools — agent tool access
No tools declared
all session tools
●
view_file
●
grep_search
●
mcp_chrome-devtools/*
●
run_command
●
write_to_file
●
mcp_figma/*
●
mcp_github/*
●
delete_file
→
With declared tools
only what's needed
✓
view_file
✓
grep_search
✓
mcp_chrome-devtools/*
Security
The agent cannot invoke tools outside its declared scope
Tokens
Fewer JSON schemas in the prompt, lower latency and cost per call
Precision
The model can't choose the wrong tool if it never sees it