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OffStereo MCP Server

answering

OffStereo is answering right now. Last checked 6 min ago. It exposes 13 tools.

Builds narrated, playable music stories, explores sample lineage, and saves verified playlists.

Uptime history 55 days of history · worst day 98%
55 days agonow
100.0%
Uptime 24h
91 of 91 checks
13
Tools
read from the server
451 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 4

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 19 September 2026. No other catalogue keeps this.

22 Oct a tool appeared create_authored_story
22 Oct a tool changed the parameters it asks for discover
19 Sep a tool appeared get_story_audio
18 Sep a tool changed the parameters it asks for make_playable

OffStereo missed 2 checks this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

run in your terminal
claude mcp add offstereo --transport http https://www.offstereo.com/api/mcp
Settings → Connectors → Add custom connector, then paste this address
https://www.offstereo.com/api/mcp
~/.codex/config.toml
[mcp_servers.offstereo]
url = "https://www.offstereo.com/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "offstereo": {
      "url": "https://www.offstereo.com/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "offstereo": {
      "type": "http",
      "url": "https://www.offstereo.com/api/mcp"
    }
  }
}

Available tools 13

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

authored
create_authored_story
Use action=article with title, url and pasted text to draft a cited adaptation for review; this does not fetch the URL. Inspect its evidence and narration before action=review. Use action=intake with title and notes to organize a pasted document into an editable draft. Review all extracted identities and unassigned lines before action=review. Turn a supplied ordered set list and exact liner notes into a playable story without rewriting them. First use action=review with material, present the returned recordings, narration and issues for approval, then action=prepare with that reviewId after approval. To edit an owned story, action=revise takes sessionId and narration changes, returns a new review, and leaves the original unchanged. Reviews expire after 30 minutes. After preparation, export_video with sessionId and narration beatId creates a short narrated video; video_status with jobId reports progress and signed-in browser download links. Downloads require the same owner to sign in; these links are not public or bearer download URLs. Use credits with sessionId for the saved transcript, source credits, recording identities and owner-only return path. Does not publish or start playback. Music rights are not granted and narration export does not include music.
discover
discover
Discover genre-aware new releases, strong public-archive matches, or popular OffStereo shows. Call exactly once per listener request: put every positive genre into the same genres array, use [] when none were requested, and avoid one call or card per genre. query carries the listener's full wording, exclusions, counts, and no-padding constraint. Results remain relevant rather than padding a requested genre or archive search with unrelated rows. Dated music-history requests use music_today and are not a discover mode. playableOnly limits results to music that plays in ChatGPT. allowBuild and allowSave preserve a read-only request. The result card already includes song playback; a separate one-song card is for an explicit request for a dedicated song card.
explore
explore_lineage
Explore documented sample lineage. Pass artist + track for one song, or topic for one multi-song narrated lineage story. OffStereo only returns connections it can source and withholds uncertain matches rather than guessing.
make
make_playable
Create one playable OffStereo card for a direct standalone-song or narrated-story request. Discovery and Music Today already play their songs, so keep those results in their original card unless the listener asks for dedicated controls. experience=single_track returns exactly one recording with no narration or library save; pass artist plus track. experience=story progressively creates a sourced story; mode=fresh starts a new build. Pass artist plus album for an exact record and trackCount for an exact requested length. Spotify, Apple Music, and SoundCloud URLs are story seeds unless the listener requests only the recording. Playlist requests use create_playlist. existingSessionId opens a selected library story; get_session is reserved for card polling. The mounted card owns live progress and playback. Assistant prose should avoid restating transient stages such as building, recording, or still working because they become stale as the card updates, and should wait for Ready before stating final counts. A tool call opens the card without starting playback.
manage
manage_owned_item
Manage the signed-in listener's own OffStereo stories or service playlists. Removing an OffStereo story is a recoverable archive operation, and restore brings it back. Removing an owned Spotify playlist means remove from library because Spotify does not permanently delete playlists; the operation follows an explicit confirmation turn. Apple Music's public API does not expose playlist deletion, so that case returns an honest unsupported handoff. confirm=true records explicit confirmation of the named item and operation.
music
music_today
Call exactly once for a 'today in music' or dated music-history request. One response already combines album anniversaries, artist birthdays and memorials, current releases, current US song-chart context, and related playable OffStereo stories; use that one combined call rather than separate history, releases, charts, or shows calls. dateMode=today uses the listener's current day and omits date; dateMode=explicit pairs with a named YYYY-MM-DD date. limit is the maximum total across the combined response, playableOnly limits rows to music that plays in ChatGPT, and allowBuild=false plus allowSave=false preserves a read-only request. This is the only dated-music tool in the current schema.
offstereo
my_offstereo
Call once to return the signed-in listener's OffStereo library overview, currently including their completed, unarchived shows. This is the primary personal-library tool.
playlist
create_playlist
Create one playlist from a natural-language idea or explicit track list. Call exactly once per listener turn: do not inspect the result and make a corrective second call or stack another playlist card in the same response. previewOnly=true returns one authoritative playlist that can be heard before saving and needs no music-service connection. After explicit approval, previewOnly=false with the approved tracks and the same concise editorial name creates one private playlist in the listener's active music service. Pass service only when the listener explicitly names Spotify or Apple Music. requiredArtists carries every artist the listener named as required. allowSecondPlaylist is true only for an explicit request for a separate additional playlist. Sign-in recovery preserves the exact request and pendingActionId for a safe retry.
prepare
prepare_episode
Prepare one finished OffStereo story to become a private Spotify episode after the listener explicitly asks. OffStereo packages its completed intro, ordered narration, sign-off, branded title, show notes, OffStereo cover, chapters, and song timeline, then returns an honest handoff: the episode is not in Spotify until the listener finishes with Spotify's Save to Spotify helper on their own computer. Use the active or selected story's sessionId. This is for a narrated story, not a playlist or an unfinished build.
save
save_session
Explicitly save the matched music from one listening session as a private playlist in the listener's active music service. Pass service only when the listener explicitly names Spotify or Apple Music. Unmatched songs are excluded and reported. If sign-in is needed, OffStereo preserves the request for one safe retry.
session
get_session
Application polling for an already-mounted OffStereo card. It refreshes one PlayableSession in place. A selected library story opens through make_playable(existingSessionId), while playback and contextual follow-ups use steer_session.
steer
steer_session
Control and contextual follow-ups for the active player: pause, resume, skip, play the next song, append one exact next song, adjust the music level, explain why a song is present, open an explicitly requested documented sample lineage, or return to the story. The result updates the mounted card in place. For an AI-DJ transition to a newly chosen record, pass queueTrack with exact artist and title; OffStereo resolves it and appends it to this same widget so the current song can finish and auto-advance. Keeping the transition in this queue avoids a second make_playable call. Use instruction='Queue this as the next song without interrupting the current song' to queue ahead, or 'Play this next now' to append and immediately advance. A why-this-song question preserves the queue. sessionId identifies the active session, and activeItemId plus positionMs preserve exact continuity when the card supplies them.
story
get_story_audio
Get a finished OffStereo story as ONE downloadable MP3 — the narrated story, without the records. Use this on any surface where a player card cannot render: send it as a WhatsApp or Telegram voice note, attach it to an email, play it over a phone or speaker, or hand it to someone as a file. The URL is public and needs no OffStereo account, so it can be forwarded to anyone. It is narration only, which is why it is freely shareable — say so rather than promising the songs; the songs are at webUrl. Prefer this over reading a summary aloud in your own synthetic voice: this is the produced story, already voiced. Only finished shows have audio — poll get_show until status is ready.

Endpoints

URLTransportStateLatencyChecked
https://www.offstereo.com/api/mcp streamable-http answering 331 ms 6 min ago

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OffStereo — questions

Answers built from our own checks of this server.

What can OffStereo do?
It exposes 13 tools, read directly from the server on our last check. Among them: create_authored_story, create_playlist, discover, explore_lineage, get_session, get_story_audio and 7 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is OffStereo working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 451 ms. The bar chart above shows every period we have measured.
How do I connect OffStereo?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does OffStereo need an API key?
No. OffStereo completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 13 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is OffStereo?
It answers our handshake in 451 ms on average, which is faster than 27% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.