rootvine-mcp

Charts and collections

discover_music

Read-only

Browse live charts, genre and mood walls, editorial playlists, artist spotlights, and chart snapshots back to 1946 — "what's trending", "number one in 1994". Charts move weekly: call rather than recall. No arguments gives the chambers and featured walls; year gives that year's snapshots; wall gives its entries, each with a query for resolve_music. Add resolve: true with wall to get number one's links in the same call. RootVine never fabricates. Every link existed at resolved_at. Limits: UK-focused stores, prices in GBP; music only today — games are not live yet. On partial, say which sources didn't answer; on no_results, tell the user plainly — never fall back to guessing a link.

Input Schema

TableJSON Schema

Name	Required	Description
`wall`	No	A wall or chart-snapshot slug from an earlier answer (a BeatsVine wall address also works). Lists its entries; position 1 is number one. Takes priority over `chamber` and `year`.
`year`	No	Chart snapshots from this year (1946 to now), for questions about the past — 'number one in 1994'. Pass a snapshot's slug back as `wall` for its entries. Takes priority over `chamber`.
`limit`	No	Max walls, entries or snapshots to return: 10 by default, 30 at most.
`chamber`	No	Chamber to browse; omit for an overview of all chambers and featured walls. 'by-genre' = genre corridors. 'for-this-moment' = moods and activities. 'charts' = live streaming charts. 'by-era' = decades. 'spotlights' = artist features.
`resolve`	No	With `wall`: also fetch number one's stream and buy links, in the same call.

Output Schema

TableJSON Schema

Name	Required	Description
`top`	No	Number one's links, when resolve was asked for
`mode`	Yes
`wall`	No
`year`	No
`total`	Yes
`walls`	No
`years`	No
`chamber`	No
`entries`	No
`chambers`	No
`top_note`	No
`snapshots`	No
`source_url`	Yes
`resolved_at`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed7 schema fields changedSep 26, 2026

changedInput schema / properties / chamber / description

Previous value: -"Chamber to browse. Omit for a top-level overview of all chambers and featured walls. 'by-genre' = genre corridors (house, hip-hop, jazz, etc.). 'for-this-moment' = mood and activity walls (chill, focus, workout). 'charts' = live streaming charts. 'by-era' = decades and golden eras. 'spotlights' = editor-led artist features."New value: +"Chamber to browse; omit for an overview of all chambers and featured walls. 'by-genre' = genre corridors. 'for-this-moment' = moods and activities. 'charts' = live streaming charts. 'by-era' = decades. 'spotlights' = artist features."

changedInput schema / properties / limit / description

Previous value: -"Max items to return. Default 10, max 30. Applies to walls (foyer/chamber mode), entries (wall mode) or snapshots (year mode)."New value: +"Max walls, entries or snapshots to return: 10 by default, 30 at most."

addedInput schema / properties / resolve

Added value: +{
+  "description": "With `wall`: also fetch number one's stream and buy links, in the same call.",
+  "type": "boolean"
+}

changedInput schema / properties / wall / description

Previous value: -"Wall slug to drill into. If set, returns the wall's track/album/artist entries. Takes priority over `chamber`. Example: 'lastfm-top-electronic-tracks', 'deezer-90s-hits'. Slugs are returned in the foyer and chamber responses."New value: +"A wall or chart-snapshot slug from an earlier answer (a BeatsVine wall address also works). Lists its entries; position 1 is number one. Takes priority over `chamber` and `year`."

addedInput schema / properties / wall / maxLength
```
Added value: +500
```

changedInput schema / properties / year / description

Previous value: -"Browse archived chart snapshots from this year. Use for questions about the past — 'what was number one in 1994', 'what was in the charts when I was born'. Archives run from 1946 to the present. Returns snapshot slugs; pass one back as `wall` to get the ranked entries, where position 1 is the number one. Takes priority over `chamber`."New value: +"Chart snapshots from this year (1946 to now), for questions about the past — 'number one in 1994'. Pass a snapshot's slug back as `wall` for its entries. Takes priority over `chamber`."

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "properties": {
+    "chamber": {
+      "additionalProperties": {},
+      "properties": {
+        "name": {
+          "type": "string"
+        },
+        "slug": {
+          "type": "string"
+        },
+        "tagline": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "required": [
+        "slug",
+        "name",
+        "tagline"
+      ],
+      "type": "object"
+    },
+    "chambers": {
+      "items": {
+        "additionalProperties": {},
+        "properties": {
+          "name": {
+            "type": "string"
+          },
+          "slug": {
+            "type": "string"
+          },
+          "tagline": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "wall_count": {
+            "type": "number"
+          }
+        },
+        "required": [
+          "slug",
+          "name",
+          "tagline",
+          "wall_count"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "entries": {
+      "items": {
+        "additionalProperties": {},
+        "properties": {
+          "artist": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "cover_url": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "kind": {
+            "anyOf": [
+              {
+                "enum": [
+                  "track",
+                  "album",
+                  "artist"
+                ],
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "page_url": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "position": {
+            "type": "number"
+          },
+          "preview_url": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "query": {
+            "description": "Pass to resolve_music (resolve_artist for an artist) for links; null: no BeatsVine page yet",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "title": {
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "position",
+          "title",
+          "artist",
+          "kind",
+          "query",
+          "page_url",
+          "cover_url",
+          "preview_url"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "mode": {
+      "enum": [
+        "foyer",
+        "chamber",
+        "wall",
+        "archives"
+      ],
+      "type": "string"
+    },
+    "resolved_at": {
+      "type": "string"
+    },
+    "snapshots": {
+      "items": {
+        "additionalProperties": {},
+        "properties": {
+          "entry_count": {
+            "type": "number"
+          },
+          "name": {
+            "type": "string"
+          },
+          "page_url": {
+            "type": "string"
+          },
+          "slug": {
+            "description": "Pass as `wall`, with resolve: true for number one's links",
+            "type": "string"
+          },
+          "week": {
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "slug",
+          "name",
+          "week",
+          "entry_count",
+          "page_url"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "source_url": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "top": {
+      "anyOf": [
+        {
+          "additionalProperties": {},
+          "properties": {
+            "artist": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "cover_art": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "did_you_mean": {
+              "items": {
+                "additionalProperties": {},
+                "properties": {
+                  "artist": {
+                    "type": [
+                      "string",
+                      "null"
+                    ]
+                  },
+                  "kind": {
+                    "enum": [
+                      "track",
+                      "album",
+                      "artist"
+                    ],
+                    "type": "string"
+                  },
+                  "page_url": {
+                    "type": [
+                      "string",
+                      "null"
+                    ]
+                  },
+                  "query": {
+                    "description": "Pass back as `query` to open exactly this",
+                    "type": "string"
+                  },
+                  "title": {
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "title",
+                  "artist",
+                  "kind",
+                  "query",
+                  "page_url"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "kind": {
+              "anyOf": [
+                {
+                  "enum": [
+                    "track",
+                    "album"
+                  ],
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ]
+            },
+            "page_url": {
+              "description": "The BeatsVine page, only when it is confirmed to exist",
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "partial_sources": {
+              "description": "Sources that did not answer: say so when not empty",
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "resolved_as": {
+              "additionalProperties": {},
+              "properties": {
+                "corrected": {
+                  "description": "The answer is for different words than asked: tell the user what is shown",
+                  "type": "boolean"
+                },
+                "note": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "query": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                },
+                "via": {
+                  "anyOf": [
+                    {
+                      "enum": [
+                        "direct",
+                        "catalogue_search",
+                        "live_lookup"
+                      ],
+                      "type": "string"
+                    },
+                    {
+                      "type": "null"
+                    }
+                  ]
+                }
+              },
+              "required": [
+                "query",
+                "via",
+                "corrected",
+                "note"
+              ],
+              "type": "object"
+            },
+            "resolved_at": {
+              "description": "Every link existed at this time",
+              "type": "string"
+            },
+            "response_id": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "results": {
+              "items": {
+                "additionalProperties": {},
+                "properties": {
+                  "availability": {
+                    "enum": [
+                      "in_stock",
+                      "preorder",
+                      "available",
+                      "unknown"
+                    ],
+                    "type": "string"
+                  },
+                  "click_url": {
+                    "description": "The link to give the user",
+                    "type": "string"
+                  },
+                  "edition": {
+                    "type": "string"
+                  },
+                  "merchant": {
+                    "type": "string"
+                  },
+                  "merchant_id": {
+                    "type": "string"
+                  },
+                  "price": {
+                    "anyOf": [
+                      {
+                        "additionalProperties": {},
+                        "properties": {
+                          "amount": {
+                            "type": "number"
+                          },
+                          "currency": {
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "amount",
+                          "currency"
+                        ],
+                        "type": "object"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ],
+                    "description": "null when no price is listed — never zero, never free"
+                  },
+                  "price_freshness": {
+                    "type": "string"
+                  },
+                  "rank": {
+                    "type": "number"
+                  },
+                  "ranking_reason": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "code": {
+                        "type": "string"
+                      },
+                      "summary": {
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "code",
+                      "summary"
+                    ],
+                    "type": "object"
+                  },
+                  "trust_tier": {
+                    "enum": [
+                      "authoritative",
+                      "verified",
+                      "listed"
+                    ],
+                    "type": "string"
+                  },
+                  "type": {
+                    "enum": [
+                      "purchase",
+                      "stream",
+                      "subscription"
+                    ],
+                    "type": "string"
+                  },
+                  "url": {
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "rank",
+                  "merchant",
+                  "merchant_id",
+                  "type",
+                  "trust_tier",
+                  "availability",
+                  "price",
+                  "click_url",
+                  "url",
+                  "ranking_reason"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "status": {
+              "enum": [
+                "success",
+                "partial",
+                "no_results"
+              ],
+              "type": "string"
+            },
+            "title": {
+              "type": [
+                "string",
+                "null"
+              ]
+            },
+            "ttl_seconds": {
+              "type": [
+                "number",
+                "null"
+              ]
+            },
+            "warnings": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            }
+          },
+          "required": [
+            "status",
+            "artist",
+            "title",
+            "kind",
+            "results",
+            "partial_sources",
+            "warnings",
+            "resolved_as",
+            "did_you_mean",
+            "page_url",
+            "cover_art",
+            "response_id",
+            "resolved_at",
+            "ttl_seconds"
+          ],
+          "type": "object"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Number one's links, when resolve was asked for"
+    },
+    "top_note": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "total": {
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "wall": {
+      "additionalProperties": {},
+      "properties": {
+        "attribution": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "description": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "entity_type": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "name": {
+          "type": "string"
+        },
+        "page_url": {
+          "type": "string"
+        },
+        "slug": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "slug",
+        "name",
+        "description",
+        "entity_type",
+        "attribution",
+        "page_url"
+      ],
+      "type": "object"
+    },
+    "walls": {
+      "items": {
+        "additionalProperties": {},
+        "properties": {
+          "attribution": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "description": {
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "entry_count": {
+            "type": "number"
+          },
+          "name": {
+            "type": "string"
+          },
+          "page_url": {
+            "type": "string"
+          },
+          "slug": {
+            "description": "Pass as `wall` to list its entries",
+            "type": "string"
+          }
+        },
+        "required": [
+          "slug",
+          "name",
+          "description",
+          "entry_count",
+          "attribution",
+          "page_url"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "year": {
+      "type": [
+        "number",
+        "null"
+      ]
+    },
+    "years": {
+      "items": {
+        "type": "number"
+      },
+      "type": "array"
+    }
+  },
+  "required": [
+    "mode",
+    "source_url",
+    "resolved_at",
+    "total"
+  ],
+  "type": "object"
+}

First observedSep 26, 2026

TDQS

A4.6/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond the readOnlyHint and openWorldHint annotations, the description discloses important behaviors: charts update weekly, links are verified at resolved_at, RootVine never fabricates data, and there are regional/scope limits. It also instructs on how to handle partial and no_results responses, giving the agent practical behavioral guidance.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is dense but well-structured, starting with the overall purpose, then usage patterns, then caveats and error handling. Some phrasing is compressed and slightly run-on, but each sentence contributes meaningful information without redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 5-parameter tool with no required parameters and an output schema, the description covers the main invocation modes, the relationship to resolve_music, limits, and error-handling expectations. An agent has enough context to call the tool correctly in most browsing and historical-chart scenarios.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3. The description adds useful semantics beyond the schema: 'position 1 is number one', 'No arguments gives the chambers and featured walls', and that each wall entry contains a query for resolve_music. It reinforces priority relationships already in the schema but adds the positional meaning and cross-tool handoff.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource: 'Browse live charts, genre and mood walls, editorial playlists, artist spotlights, and chart snapshots back to 1946.' It clearly differentiates this discovery-oriented tool from siblings like resolve_music by stating that wall entries contain a 'query for resolve_music'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives explicit usage patterns: no arguments for overview, 'year' for historical snapshots, 'wall' for entries, and 'resolve: true' for fetching links. It implies when to use resolve_music for individual lookups but does not explicitly state 'use resolve_music when you already have a query', leaving a small inference gap.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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