Claude Code UserPromptSubmit hook

POST

/hooks/memberberry

const url = 'http://127.0.0.1:7677/hooks/memberberry';
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: '{"session_id":"example","prompt":"example"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}

curl --request POST \
  --url http://127.0.0.1:7677/hooks/memberberry \
  --header 'Content-Type: application/json' \
  --data '{ "session_id": "example", "prompt": "example" }'

Returns lightweight hints about notes relevant to the current prompt so Claude Code can decide whether to fetch them via MCP tools. Results are deduplicated per session, short prompts and slash commands are ignored.

Request Body^required

application/json

object

session_id

required

string

prompt

required

string

Example^generated

{
  "session_id": "example",
  "prompt": "example"
}

Responses

200

Hook result (empty when there is nothing to surface)

application/json

One of:

object
object

object

Example

{
  "hookSpecificOutput": {
    "hookEventName": "UserPromptSubmit"
  }
}

Claude Code UserPromptSubmit hook

Request Bodyrequired

Examplegenerated

Responses

200

Example

Request Body^required

Example^generated