MCP server

osc-bridge

io.github.roomi-fields/osc-bridge

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

OSC ↔ MIDI bridge — 986 synthesizers and DAWs. A MIDI MCP and OSC MCP for controlling them.

Website Source

At a glance

Type

MCP server

Publisher

roomi-fields.com (verified by the MCP Registry)

Status

Working at last check

Tools

28

Token cost

About 8,795 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http osc-bridge https://mcp.synthhub.roomi-fields.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.osc-bridge]
url = "https://mcp.synthhub.roomi-fields.com/mcp"

Gemini CLI

{"mcpServers":{"osc-bridge":{"httpUrl":"https://mcp.synthhub.roomi-fields.com/mcp"}}}

Cursor

{"mcpServers":{"osc-bridge":{"url":"https://mcp.synthhub.roomi-fields.com/mcp"}}}

VS Code

{"servers":{"osc-bridge":{"type":"http","url":"https://mcp.synthhub.roomi-fields.com/mcp"}}}

Antigravity

agy mcp add osc-bridge https://mcp.synthhub.roomi-fields.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"osc-bridge","server_url":"https://mcp.synthhub.roomi-fields.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"osc-bridge","server_url":"https://mcp.synthhub.roomi-fields.com/mcp"}

Tools

• claim_presets ~244 tokens
  Claim presets SynthHub imported from another site (their page says 'imported', with the author's name and page there) when the user is that author: give the id of one of them; the server answers with a code for the user to add to their author page at that site (profile or bio). Once it is there, cal
• comment_preset ~300 tokens
  Comment on a shared preset — how it sounds, how you used it, what you changed — optionally attaching your remix (a preset you shared with derived_from). Comments are public at once. Also: remove one of this account's comments (remove), or flag someone else's as abusive or off-topic (flag); comments
• find_presets ~508 tokens
  Search what SynthHub users shared (CC BY-SA 4.0): sounds, sequences, kits, projects, banks, MIDI clips. Filter by device, kind, category, genre, tag, author (pseudonym) or words; sort by newest, most stars, most loaded into a device or most trusted (confirmed on real devices). Returns, per preset, i
• follow_author ~173 tokens
  Follow an author of shared presets (by pseudonym), or stop (on: false); with author alone and on omitted, shows their page: profile, presets, followers. Without author, lists the newest presets of the authors this account follows.
• get_contribution ~137 tokens
  Where a contribution stands: pending (waiting for the merge job), merged (with its pull request), rejected (with the reason), or held (its account is under review).
• get_device_docs ~146 tokens
  Fetch the markdown companion documentation for one device, if present. The slug is the device's OSC prefix without the leading slash (e.g. 'ableton' for /ableton).
• get_preset ~250 tokens
  One shared preset in full: its content (SysEx hex, settings by driver address, MIDI file), description and playing tips, versions with their change notes, what it was derived from and its derivatives (remixes), comments, preview URLs, author, licence and attribution line, trust and counts. Load it w
• get_trust ~258 tokens
  How far a driver has been confirmed by people who used it, per firmware: status (unreported, unconfirmed, usage-verified, firmware-dependent, failing, disputed), how many users report it works / fails / partly works, each firmware's own status, the device identities seen for each firmware, and the s
• link_account ~189 tokens
  Link this account to the user's SynthHub account on the site: returns a one-time address (valid 15 minutes) for the user to open and sign in (passkey, e-mail, Google or Discord). Afterwards what this account shared appears under their profile, and they manage it — and their stars, collections, comme
• list_devices ~291 tokens
  Find device drivers in the catalogue (about 988 synths, drum machines, controllers and DAWs). Without arguments it lists them all; `query` keeps drivers whose vendor, name or slug contain every word (e.g. 'korg minilogue'). Returns name, vendor, OSC prefix (slug), kind, source tier and firmware vers
• list_routes ~155 tokens
  Return the OSC routes a device exposes: declarative commands (OSC paths it accepts), cc/nrpn params, sysex params, named note triggers (drum sounds), and reply patterns. Use this to discover what a device can do.
• load_preset ~365 tokens
  Load a shared preset (find_presets, get_preset) into the user's device through a relay: its settings are sent through the driver, its patch data as SysEx — which replaces the sound the device holds, so the relay asks the user to accept it and this call waits for the answer (up to 2 minutes): tell th
• preset_collection ~281 tokens
  Collections of shared presets, public, made by one account (e.g. 'Dark basses for minilogue'). action: create (name, description), rename (collection, name, description), add or remove (collection, id), delete (collection), get (collection: its presets), list (this account's collections, or author:
• relay_detect ~260 tokens
  Find which devices are connected to the user's machine through a relay: sends the MIDI Identity Request (F0 7E 7F 06 01 F7, changes nothing on the device) to every output and matches the answers — manufacturer, model, firmware version — against the catalogue. Returns the best driver ids and identity
• relay_listen ~288 tokens
  Listen to what the user's hardware sends through a relay for a few seconds: notes, CC, NRPN, SysEx, decoded. With a device, each CC or NRPN that moved is matched to the driver's OSC addresses — ask the user to move one control on the device while listening to learn which address it is, or to check t
• relay_send Sends messages · ~488 tokens
  Play or set something on the user's hardware through a relay: give a driver (id or slug) and one of its OSC addresses from list_routes with its arguments (e.g. address '/filter/cutoff', args [64]; '/note/on', args [60, 100]) — the server turns it into the right CC, NRPN, note or SysEx message. Or gi
• relay_status ~178 tokens
  Check a relay: the user opened https://synthhub.roomi-fields.com/connect/ (or ran osc-bridge connect) and gave you its pairing code. Returns the MIDI output and input ports of their machine. Nothing is sent to the hardware.
• report_mapping ~414 tokens
  Teach the catalogue which MIDI message a control really sends: after the user moved one control on the device (see relay_listen), give the driver address it is (from list_routes) — or, for a control the driver lacks, its panel label — and the CC, NRPN or note it sent, with the firmware and the devic
• report_preset ~227 tokens
  Tell SynthHub how a shared preset behaved once loaded on a real device: 'works' (it loaded and sounds as described), 'fails' (refused, wrong sound), or 'factory' (it is a factory preset or someone else's sound: presets that several users flag are hidden until reviewed). Give the firmware.
• report_result ~491 tokens
  Tell the catalogue how a driver behaved on a real device, after testing it: 'works', 'fails' or 'partial', for the whole driver or one OSC address (from list_routes). Give the firmware version, and the device's reply to the MIDI Identity Request (F0 7E 7F 06 01 F7) as identity_hex when you can: trus
• set_profile ~446 tokens
  Set the public profile shown on this account's author page and with its shared presets and comments, instead of its pseudonym alone: display name, link (https), a few words, the presets put first, where they are, more links, their instruments and a README. A field left out stays as it is; an empty o
• share_preset ~1151 tokens
  Share something the user made on a device with every SynthHub user, under CC BY-SA 4.0: a sound, a sequence or pattern, a kit, a project, a bank of their own sounds, or a MIDI clip any device can play. Its content: the device's own data (SysEx, e.g. from backup_presets), settings by driver address (
• star_preset ~138 tokens
  Star a shared preset for this account, as on GitHub (on: false takes the star back). Without id, lists the presets this account starred.
• submit_driver ~319 tokens
  Contribute a driver for a device the catalogue lacks (or a better one): the full driver file as a JSON object, in the osc-bridge device schema (device.name, device.vendor, device.osc_prefix, and cc_params / params / commands / triggers — see https://synthhub.roomi-fields.com/DEVICE_JSON_SCHEMA/). It
• submit_fix ~218 tokens
  Contribute a corrected variant of a driver from what the catalogue learned: where learned mappings (get_trust → mappings, differs: true) disagree with the driver on one firmware, builds a copy of the driver with the learned CC / NRPN numbers, as a new file for that firmware, and queues it for the me
• take_sound ~379 tokens
  Take the sound the user's synth is playing — or one of its stored programs — straight from the synth through a relay, with its name. The synth is found among those SynthHub's librarian can talk to (the KnobKraft Orm adaptations, about 90 synths) by the identity and detect messages, then asked for it
• update_preset ~377 tokens
  Publish a new version of a preset this account shared: new content (hex, file, settings or midi_file) makes a new version, kept with a change note — earlier versions stay available; the description fields alone change it in place. Someone else's preset: share yours with derived_from instead.
• withdraw_preset ~124 tokens
  Withdraw a preset this account shared: it is no longer listed nor served. Copies others already made stay under CC BY-SA.

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