ONCE

Music distribution for agents: upload, AI-check, submit and track releases on ONCE.

What does this entry provide?

ONCE is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 93/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding ONCE to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.

Snapshot facts

Source: Official MCP Registry
Quality: 93/100
Install method: streamable-http
Repo: Registry only
Repo updated: Sep 11, 2026

Install command

mcp add app.once/mcp https://beta.once.app/api/mcp

Install method: streamable-http

Review the upstream source before running this command.

Source entry

Quality

Repo stars

Repo updated

Sep 11, 2026

How is this score calculated?

Weighted across six dimensions, scored 0-100.
Provenance (25): listed in an official or curated registry.
Installability (25): a runnable install command beats a declared transport, which beats a source checkout.
Maintenance (20): recency of the last push; archived entries score zero here.
Adoption (20): repository stars on a log curve.

MCP manifest

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-09-11T20:26:19.71615Z",
      "publishedAt": "2026-09-11T20:26:19.71615Z",
      "statusChangedAt": "2026-09-11T20:26:19.71615Z"
    }
  },
  "server": {
    "name": "app.once/mcp",
    "_meta": {
      "io.modelcontextprotocol.registry/publisher-provided": {
        "tools": [
          "get_metadata_rules",
          "get_release_schema",
          "get_distribution_stores",
          "upload_file",
          "upload_file_from_url",
          "prepare_local_file_upload",
          "upload_file_init",
          "upload_file_chunk",
          "upload_file_complete",
          "generate_cover_art",
          "detect_audio_ai",
          "detect_audio_pex_search_acr",
          "upsert_release_snapshot",
          "submit_release",
          "list_releases",
          "get_release_metadata",
          "get_release_status",
          "get_release_job",
          "set_distribution_stores",
          "add_distribution_stores",
          "takedown_release",
          "get_ugc_policies",
          "set_ugc_policies",
          "get_release_performance",
          "get_performance_summary",
          "get_profile",
          "get_credits",
          "get_pricing",
          "create_credit_checkout_session",
          "get_autoreload",
          "set_autoreload",
          "create_account",
          "password_authorize"
        ],
        "restApi": "https://docs.once.app/rest-api",
        "agentGuide": "https://beta.once.app/api/mcp/docs",
        "serverCard": "https://beta.once.app/.well-known/mcp/server-card.json",
        "documentation": "https://docs.once.app/mcp",
        "authentication": "oauth2",
        "protectedResourceMetadata": "https://beta.once.app/.well-known/oauth-protected-resource/api/mcp",
        "authorizationServerMetadata": "https://beta.once.app/.well-known/oauth-authorization-server"
      }
    },
    "icons": [
      {
        "src": "https://beta.once.app/once_icon_512.png",
        "sizes": [
          "512x512"
        ],
        "mimeType": "image/png"
      }
    ],
    "title": "ONCE",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://beta.once.app/api/mcp",
        "type": "streamable-http"
      }
    ],
    "version": "0.1.0",
    "websiteUrl": "https://docs.once.app/mcp",
    "description": "Music distribution for agents: upload, AI-check, submit and track releases on ONCE."
  }
}

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