Shelfclub
Search a catalog of 1.7 million books and find books by mood, vibe, pace or genre. Read-only.
Should I use this
Quality & Safety
A
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~4,185Tokens (tool definitions)
~6.7 KBTypical response size
Significant attention impact (3.27% of 128k context)
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"books": {
"url": "https://mcp.shelfclub.app/mcp"
}
}
}Remote endpoints
https://mcp.shelfclub.app/mcpstreamable-httpWhat it can do
Tool inventory
Tools (6)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢search_books(query, limit)
Search the Shelfclub book catalog by title or author name. Returns up to 10 books, each with its Shelfclub id, authors, description, reader rating, series, shelfclub.app link, and machine-generated mood, vibe, pace and genre tags.
Input Schema
{
"type": "object",
"properties": {
"query": {
"type": "string",
"minLength": 2,
"maxLength": 200,
"description": "A book title, an author name, or both."
},
"limit": {
"default": 5,
"description": "How many books to return.",
"type": "integer",
"minimum": 1,
"maximum": 10
}
},
"required": [
"query"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"ok",
"try_again_later"
],
"description": "\"try_again_later\": the service was busy and looked nothing up, so the other fields are absent."
},
"retryAfterSeconds": {
"description": "With \"try_again_later\", when known: how long to wait.",
"type": "integer",
"minimum": 1,
"maximum": 3600
},
"books": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The Shelfclub id of the book."
},
"title": {
"type": "string"
},
"authors": {
"type": "array",
"items": {
"type": "string"
}
},
"url": {
"type": "string",
"description": "The book's page on shelfclub.app."
},
"description": {
"description": "From the catalog, cut to 600 characters.",
"type": [
"string",
"null"
]
},
"averageRating": {
"description": "Reader rating out of 5.",
"type": [
"number",
"null"
]
},
"moods": {
"type": "array",
"items": {
"type": "string"
}
},
"vibes": {
"type": "array",
"items": {
"type": "string"
}
},
"pace": {
"type": [
"string",
"null"
]
},
"genres": {
"type": "array",
"items": {
"type": "string"
}
},
"series": {
"type": [
"string",
"null"
]
},
"seriesPosition": {
"type": [
"number",
"null"
]
}
},
"required": [
"id",
"title",
"authors",
"url",
"description",
"averageRating",
"moods",
"vibes",
"pace",
"genres",
"series",
"seriesPosition"
],
"additionalProperties": false
}
},
"total": {
"description": "How many books in the catalog match, of which `books` is the first few.",
"type": "number"
},
"exactMatch": {
"description": "False when nothing matched the query as written and `books` holds the closest titles instead.",
"type": "boolean"
},
"tagProvenance": {
"type": "string",
"description": "Where the moods, vibes, pace and genres come from."
}
},
"required": [
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢find_books_by_mood(moods, vibes, pace, genres, limit)
Find books in the Shelfclub catalog by mood, vibe, pace and genre tags. At least one tag is needed. Books that carry every requested tag are listed first, most read first; when there are fewer of those than asked for, books that carry some of the tags follow, and `matchAll` says how many of the books returned carry every tag. Each book is returned with its own tags. Returns up to 10 books, each with its Shelfclub id, authors, description, reader rating, series and shelfclub.app link. The tags are machine-generated.
Input Schema
{
"type": "object",
"properties": {
"moods": {
"default": [],
"description": "How the book feels to read.",
"maxItems": 8,
"type": "array",
"items": {
"type": "string",
"enum": [
"cozy",
"adventurous",
"emotional",
"dark",
"hopeful",
"romantic",
"funny",
"spicy"
]
}
},
"vibes": {
"default": [],
"description": "The kind of reading experience.",
"maxItems": 10,
"type": "array",
"items": {
"type": "string",
"enum": [
"beach-read",
"page-turner",
"literary",
"thought-provoking",
"atmospheric",
"character-driven",
"plot-driven",
"slow-burn",
"epic",
"comfort-read"
]
}
},
"pace": {
"description": "How quickly the story moves.",
"type": "string",
"enum": [
"fast",
"medium",
"slow"
]
},
"genres": {
"default": [],
"maxItems": 19,
"type": "array",
"items": {
"type": "string",
"enum": [
"science-fiction",
"fantasy",
"romance",
"mystery",
"thriller",
"horror",
"historical-fiction",
"literary-fiction",
"young-adult",
"childrens",
"graphic-novel",
"poetry",
"biography-memoir",
"history",
"science-nature",
"self-help",
"business",
"true-crime",
"religion-spirituality"
]
}
},
"limit": {
"default": 5,
"description": "How many books to return.",
"type": "integer",
"minimum": 1,
"maximum": 10
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"ok",
"try_again_later"
],
"description": "\"try_again_later\": the service was busy and looked nothing up, so the other fields are absent."
},
"retryAfterSeconds": {
"description": "With \"try_again_later\", when known: how long to wait.",
"type": "integer",
"minimum": 1,
"maximum": 3600
},
"books": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The Shelfclub id of the book."
},
"title": {
"type": "string"
},
"authors": {
"type": "array",
"items": {
"type": "string"
}
},
"url": {
"type": "string",
"description": "The book's page on shelfclub.app."
},
"description": {
"description": "From the catalog, cut to 600 characters.",
"type": [
"string",
"null"
]
},
"averageRating": {
"description": "Reader rating out of 5.",
"type": [
"number",
"null"
]
},
"moods": {
"type": "array",
"items": {
"type": "string"
}
},
"vibes": {
"type": "array",
"items": {
"type": "string"
}
},
"pace": {
"type": [
"string",
"null"
]
},
"genres": {
"type": "array",
"items": {
"type": "string"
}
},
"series": {
"type": [
"string",
"null"
]
},
"seriesPosition": {
"type": [
"number",
"null"
]
}
},
"required": [
"id",
"title",
"authors",
"url",
"description",
"averageRating",
"moods",
"vibes",
"pace",
"genres",
"series",
"seriesPosition"
],
"additionalProperties": false
}
},
"matchAll": {
"description": "How many of `books`, counted from the first, carry every tag asked for. The books after them carry some of the tags.",
"type": "integer",
"minimum": -9007199254740991,
"maximum": 9007199254740991
},
"hasMore": {
"description": "Whether more books carry these tags than were returned.",
"type": "boolean"
},
"tagProvenance": {
"type": "string",
"description": "Where the moods, vibes, pace and genres come from."
}
},
"required": [
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢get_book(id, isbn)
Look up one book in the Shelfclub catalog, by its Shelfclub id or by ISBN. Returns its description, authors, reader rating, series, an edition (ISBN, page count, publisher, publication date, language), its shelfclub.app link, and machine-generated mood, vibe, pace and genre tags. A lookup by id also returns the Shelfclub author id of each author that has an author record.
Input Schema
{
"type": "object",
"properties": {
"id": {
"description": "The Shelfclub id of the book, as the other tools return it. Give this or `isbn`, not both.",
"type": "string",
"format": "uuid",
"pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$"
},
"isbn": {
"description": "An ISBN-10 or ISBN-13, with or without hyphens.",
"type": "string",
"maxLength": 32
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"ok",
"try_again_later"
],
"description": "\"try_again_later\": the service was busy and looked nothing up, so the other fields are absent."
},
"retryAfterSeconds": {
"description": "With \"try_again_later\", when known: how long to wait.",
"type": "integer",
"minimum": 1,
"maximum": 3600
},
"book": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The Shelfclub id of the book."
},
"title": {
"type": "string"
},
"authors": {
"type": "array",
"items": {
"type": "string"
}
},
"url": {
"type": "string",
"description": "The book's page on shelfclub.app."
},
"description": {
"description": "From the catalog, cut to 600 characters.",
"type": [
"string",
"null"
]
},
"averageRating": {
"description": "Reader rating out of 5.",
"type": [
"number",
"null"
]
},
"moods": {
"type": "array",
"items": {
"type": "string"
}
},
"vibes": {
"type": "array",
"items": {
"type": "string"
}
},
"pace": {
"type": [
"string",
"null"
]
},
"genres": {
"type": "array",
"items": {
"type": "string"
}
},
"series": {
"type": [
"string",
"null"
]
},
"seriesPosition": {
"type": [
"number",
"null"
]
},
"ratingCount": {
"type": [
"number",
"null"
]
},
"authorLinks": {
"description": "The authors that have a Shelfclub author record. Present when the book was looked up by id, not by ISBN.",
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The Shelfclub id of the author."
},
"name": {
"type": "string"
},
"url": {
"type": "string",
"description": "The author's page on shelfclub.app."
}
},
"required": [
"id",
"name",
"url"
],
"additionalProperties": false
}
},
"edition": {
"anyOf": [
{
"type": "object",
"properties": {
"isbn": {
"type": [
"string",
"null"
]
},
"pageCount": {
"type": [
"number",
"null"
]
},
"publisher": {
"type": [
"string",
"null"
]
},
"publishedDate": {
"type": [
"string",
"null"
]
},
"language": {
"type": [
"string",
"null"
]
}
},
"required": [
"isbn",
"pageCount",
"publisher",
"publishedDate",
"language"
],
"additionalProperties": false
},
{
"type": "null"
}
],
"description": "The edition with the ISBN that was asked for; for a lookup by id, the catalog's main edition of the book."
}
},
"required": [
"id",
"title",
"authors",
"url",
"description",
"averageRating",
"moods",
"vibes",
"pace",
"genres",
"series",
"seriesPosition",
"ratingCount",
"edition"
],
"additionalProperties": false
},
"tagProvenance": {
"type": "string",
"description": "Where the moods, vibes, pace and genres come from."
}
},
"required": [
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢get_similar_books(id, limit)
List the books in the Shelfclub catalog whose mood, vibe, pace and genre tags overlap most with those of a given book. The tags are machine-generated, and a book that has none has no similar books. Returns up to 10 books, each with its Shelfclub id, authors, description, reader rating, series, tags and shelfclub.app link.
Input Schema
{
"type": "object",
"properties": {
"id": {
"type": "string",
"format": "uuid",
"pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$",
"description": "The Shelfclub id of the book, as the other tools return it."
},
"limit": {
"default": 5,
"description": "How many books to return.",
"type": "integer",
"minimum": 1,
"maximum": 10
}
},
"required": [
"id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"ok",
"try_again_later"
],
"description": "\"try_again_later\": the service was busy and looked nothing up, so the other fields are absent."
},
"retryAfterSeconds": {
"description": "With \"try_again_later\", when known: how long to wait.",
"type": "integer",
"minimum": 1,
"maximum": 3600
},
"books": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The Shelfclub id of the book."
},
"title": {
"type": "string"
},
"authors": {
"type": "array",
"items": {
"type": "string"
}
},
"url": {
"type": "string",
"description": "The book's page on shelfclub.app."
},
"description": {
"description": "From the catalog, cut to 600 characters.",
"type": [
"string",
"null"
]
},
"averageRating": {
"description": "Reader rating out of 5.",
"type": [
"number",
"null"
]
},
"moods": {
"type": "array",
"items": {
"type": "string"
}
},
"vibes": {
"type": "array",
"items": {
"type": "string"
}
},
"pace": {
"type": [
"string",
"null"
]
},
"genres": {
"type": "array",
"items": {
"type": "string"
}
},
"series": {
"type": [
"string",
"null"
]
},
"seriesPosition": {
"type": [
"number",
"null"
]
}
},
"required": [
"id",
"title",
"authors",
"url",
"description",
"averageRating",
"moods",
"vibes",
"pace",
"genres",
"series",
"seriesPosition"
],
"additionalProperties": false
}
},
"tagProvenance": {
"type": "string",
"description": "Where the moods, vibes, pace and genres come from."
}
},
"required": [
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢get_trending_books(limit)
List the books trending on Shelfclub: the books its readers have been shelving come first, then the catalog's most widely read books. Returns up to 10 books, each with its Shelfclub id, authors, description, reader rating, series, shelfclub.app link, and machine-generated mood, vibe and pace tags.
Input Schema
{
"type": "object",
"properties": {
"limit": {
"default": 5,
"description": "How many books to return.",
"type": "integer",
"minimum": 1,
"maximum": 10
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"ok",
"try_again_later"
],
"description": "\"try_again_later\": the service was busy and looked nothing up, so the other fields are absent."
},
"retryAfterSeconds": {
"description": "With \"try_again_later\", when known: how long to wait.",
"type": "integer",
"minimum": 1,
"maximum": 3600
},
"books": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The Shelfclub id of the book."
},
"title": {
"type": "string"
},
"authors": {
"type": "array",
"items": {
"type": "string"
}
},
"url": {
"type": "string",
"description": "The book's page on shelfclub.app."
},
"description": {
"description": "From the catalog, cut to 600 characters.",
"type": [
"string",
"null"
]
},
"averageRating": {
"description": "Reader rating out of 5.",
"type": [
"number",
"null"
]
},
"moods": {
"type": "array",
"items": {
"type": "string"
}
},
"vibes": {
"type": "array",
"items": {
"type": "string"
}
},
"pace": {
"type": [
"string",
"null"
]
},
"series": {
"type": [
"string",
"null"
]
},
"seriesPosition": {
"type": [
"number",
"null"
]
}
},
"required": [
"id",
"title",
"authors",
"url",
"description",
"averageRating",
"moods",
"vibes",
"pace",
"series",
"seriesPosition"
],
"additionalProperties": false
}
},
"tagProvenance": {
"type": "string",
"description": "Where the moods, vibes, pace and genres come from."
}
},
"required": [
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢get_author(id, include_books)
Look up an author in the Shelfclub catalog by Shelfclub author id, which get_book returns for the authors of a book. Returns the author's name, biography, birth and death dates and shelfclub.app link. With `include_books`, also returns up to 10 of their books, the most recently published first, each with its Shelfclub id, description, reader rating, series, shelfclub.app link, and machine-generated mood, vibe, pace and genre tags.
Input Schema
{
"type": "object",
"properties": {
"id": {
"type": "string",
"format": "uuid",
"pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$",
"description": "The Shelfclub id of the author, from the `authorLinks` of a get_book result."
},
"include_books": {
"default": false,
"description": "Also return up to 10 of the author's books.",
"type": "boolean"
}
},
"required": [
"id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"status": {
"type": "string",
"enum": [
"ok",
"try_again_later"
],
"description": "\"try_again_later\": the service was busy and looked nothing up, so the other fields are absent."
},
"retryAfterSeconds": {
"description": "With \"try_again_later\", when known: how long to wait.",
"type": "integer",
"minimum": 1,
"maximum": 3600
},
"author": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The Shelfclub id of the author."
},
"name": {
"type": "string"
},
"url": {
"type": "string",
"description": "The author's page on shelfclub.app."
},
"bio": {
"description": "From the catalog, cut to 600 characters.",
"type": [
"string",
"null"
]
},
"birthDate": {
"description": "As the catalog has it: a full date, a year, or other text.",
"type": [
"string",
"null"
]
},
"deathDate": {
"type": [
"string",
"null"
]
}
},
"required": [
"id",
"name",
"url",
"bio",
"birthDate",
"deathDate"
],
"additionalProperties": false
},
"books": {
"description": "With `include_books`: the most recently published first.",
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The Shelfclub id of the book."
},
"title": {
"type": "string"
},
"authors": {
"type": "array",
"items": {
"type": "string"
}
},
"url": {
"type": "string",
"description": "The book's page on shelfclub.app."
},
"description": {
"description": "From the catalog, cut to 600 characters.",
"type": [
"string",
"null"
]
},
"averageRating": {
"description": "Reader rating out of 5.",
"type": [
"number",
"null"
]
},
"moods": {
"type": "array",
"items": {
"type": "string"
}
},
"vibes": {
"type": "array",
"items": {
"type": "string"
}
},
"pace": {
"type": [
"string",
"null"
]
},
"genres": {
"type": "array",
"items": {
"type": "string"
}
},
"series": {
"type": [
"string",
"null"
]
},
"seriesPosition": {
"type": [
"number",
"null"
]
}
},
"required": [
"id",
"title",
"authors",
"url",
"description",
"averageRating",
"moods",
"vibes",
"pace",
"genres",
"series",
"seriesPosition"
],
"additionalProperties": false
}
},
"booksTotal": {
"description": "With `include_books`: how many of their books the catalog has.",
"type": "number"
},
"tagProvenance": {
"type": "string",
"description": "Where the moods, vibes, pace and genres come from."
}
},
"required": [
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}Community
Evidence
Recent observations
verifiedversion not recorded6 tools