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POST
/
v1
/
agents
/
{agent_id}
/
sandbox
/
file_edit
Sandbox: File Edit
curl --request POST \
  --url https://api.xpander.ai/v1/agents/{agent_id}/sandbox/file_edit \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "path": "app.py",
  "old_text": "DEBUG = True",
  "new_text": "DEBUG = False"
}
'
{
  "status": "ok",
  "stdout": "<string>",
  "stderr": "<string>",
  "exit_code": 123,
  "content": "<string>",
  "path": "<string>",
  "matches": [
    {}
  ],
  "url": "<string>",
  "error": "<string>"
}
Edit a file in the per-agent sandbox by replacing an exact text occurrence. old_text must match the existing file content exactly, including whitespace and indentation.

​
Path Parameters

​
agent_id
string
required
Agent ID (UUID)

​
Request Body

​
path
string
required
Path to the file to edit, relative to the sandbox root.
​
old_text
string
required
Exact text to find and replace. Must match existing file content, including whitespace.
​
new_text
string
required
Replacement text. Use an empty string to delete the matched content.

​
Response

​
status
string
Result status (e.g., ok).
​
path
string
Path of the file that was edited.

​
Example Request

curl -X POST "https://api.xpander.ai/v1/agents/<agent-id>/sandbox/file_edit" \
  -H "Content-Type: application/json" \
  -H "x-api-key: <your-api-key>" \
  -d '{
    "path": "app.py",
    "old_text": "DEBUG = True",
    "new_text": "DEBUG = False"
  }'

​
Notes

  • The match is exact and case-sensitive. If old_text appears more than once in the file, the request fails — include additional surrounding context in old_text to make the match unique.
  • To apply several edits atomically, use Sandbox: Multi Edit instead.

​
See Also

Authorizations

​
x-api-key
string
header
required

API Key for authentication

Path Parameters

​
agent_id
string
required

Agent UUID

Body

application/json

Request body for editing a file in the agent sandbox by replacing exact text occurrences.

​
path
string
required

Path to the file to edit, relative to the sandbox root.

Example:

"app.py"

​
old_text
string
required

Exact text to find and replace. Must match existing file content, including whitespace.

Example:

"DEBUG = True"

​
new_text
string
required

Replacement text. Use an empty string to delete the matched content.

Example:

"DEBUG = False"

Response

Successful Response

Generic response wrapper returned by agent sandbox endpoints. Not every field is populated for every tool.

​
status
string

Result status of the sandbox operation.

Example:

"ok"

​
stdout
string | null

Standard output captured from the sandbox command. Present for bash.

​
stderr
string | null

Standard error captured from the sandbox command. Present for bash.

​
exit_code
integer | null

Process exit code returned by the sandbox. Present for bash.

​
content
string | null

File contents. Present for file_read.

​
path
string | null

File path affected by the operation. Present for file_write, file_edit, multi_edit, file_share.

​
matches
Matches · object[] | null

Match results. Present for glob and grep.

​
url
string<uri> | null

Public CDN URL. Present for file_share.

​
error
string | null

Error message when the operation fails.