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edit_selected_part

Replaces one exact piece of text.

Since 2 Sept 2026

The old text must match exactly.

Tool name: edit_selected_part
Group: Files
Risk: medium
Needs approval: never
Approval rule: No approval. Hard blocks apply.
Allowed in scheduled jobs: No
Default: on

Parameters

Name	Type	Required	Default	Meaning	Limits
path	string	Yes		Path relative to the project, such as vault/note.md.
old_text	string	Yes		Exact text to replace. Must match once.
new_text	string	Yes		Replacement text.

Returns

A confirmation.

Example (made up for this page)

Call

{
  "path": "demo",
  "old_text": "demo",
  "new_text": "demo"
}

Result

Edited vault/notes/a.md

Side effects

Changes a file.

How it can fail

When	What the agent sees
Text not found	old_text not found (exact match required)

See also:Files tools

Checked against the source at commit f4fd89f on 29 Oct 2026. Everything here is merged on the main branch; no release has been tagged yet. The source is private, so these pages are the public description.