trace_pin_session

[analysis]

Pins or unpins a stored GliderTrace session. Retention never deletes a pinned session.

Before you use this tool

A pinned session is exempt from every retention quota and uses the pinned-bytes quota. The server refuses a pin that goes over that quota, so unpin a session you no longer need.

Try it locally in the GliderTrace playground

Parameters

Name	Type	Required	Description
sessionId	string	Yes	Trace session id, for example trc_20260507_123044_ab12cd34.
pinned	boolean	No	Set to true to pin the session, or false to unpin it. Defaults to true. Default: `true`

Examples

Replace sample paths and symbol keys with values from your workspace.

Keep a baseline session

Arguments 
{
  "sessionId": "trc_20260507_123044_ab12cd34",
  "pinned": true
}

Full MCP request

Full MCP request 
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "trace_pin_session",
    "arguments": {
      "sessionId": "trc_20260507_123044_ab12cd34",
      "pinned": true
    }
  }
}

Response Notes

Returns the pin state, whether the change was applied, and the pinned bytes against the pinned-bytes quota.

GliderTrace 1.0.0 returns compact JSON for every tool. Result fields appear beside success; there is no response-format parameter. success describes the tool call. Check the process or session status and exitCode separately. Scalar results and fields that conflict with reserved names appear under result.

To migrate an envelope consumer, read response.sessionId instead of response.data.sessionId. Stored sessions and exported files keep their formats. --max-response-chars limits response text to 60,000 UTF-16 characters by default. Use 0 to disable it, or at least 1,000. This limit counts text characters, not transport bytes or tokens.

outputLimit.truncated marks omitted response detail. It does not change capture completeness. Use the returned next tool and arguments when available. Do not repeat a command or feedback submission to recover omitted output. For event pages, keep the filters and cursor while reducing limit.

For session details, set includeArtifacts and includeTopFindings to false to reduce output. Check error, actionable meta, warnings, and coverage before drawing conclusions. Internal diagnostics stay in local server logs.