OffStereo

Save the story playlist

save_session

Explicitly save the matched music from one listening session as a private playlist in the listener's active music service. Apple Music is the public save destination; Spotify saving requires an explicitly enabled test deployment. Pass service only when the listener explicitly names a destination. Unmatched songs are excluded and reported. If sign-in is needed, OffStereo preserves the request for one safe retry.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "save_session"
  }
}

Input Schema

Name	Required	Description	Default
`name`	No
`service`	No
`sessionId`	No
`pendingActionId`	No

Output Schema

Name	Required	Description
`id`	No
`title`	No
`object`	Yes	Always 'playlist'.
`status`	Yes	preview, preview_partial, saved_offstereo, created, partial, auth_required, or failed.
`tracks`	No
`webUrl`	No
`actions`	No
`message`	No
`privacy`	No	Requested vs. confirmed privacy state.
`service`	No
`spotify`	No
`warnings`	No
`retryTool`	No
`appleMusic`	No
`authReason`	No
`connectUrl`	No	Sign-in URL when status is auth_required.
`unresolved`	No	Songs that could not be confidently matched.
`connections`	No
`pendingActionId`	No	Retry token for a safe re-call after sign-in.

Schema Changelog

Changes observed during successful MCP inspections.

Changed3 schema fields changedNov 10, 2026

changedOutput schema / description

Previous value: -"A playlist result. status is preview (unsaved, hearable), created, partial, auth_required, or failed. Songs that could not be matched are reported in `unresolved` rather than substituted."New value: +"A playlist result. status is preview (unsaved, hearable), preview_partial, saved_offstereo (private library snapshot, no music-service write), created, partial, auth_required, or failed. Songs that could not be matched are reported in `unresolved` rather than substituted."

changedOutput schema / properties / service / enum

Previous value: -[
-  "spotify",
-  "apple_music"
-]New value: +[
+  "spotify",
+  "apple_music",
+  "offstereo"
+]

changedOutput schema / properties / status / description

Previous value: -"preview, created, partial, auth_required, or failed."New value: +"preview, preview_partial, saved_offstereo, created, partial, auth_required, or failed."

First observedSep 10, 2026

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