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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Data access / search

Shelfclub

Search a catalog of 1.7 million books and find books by mood, vibe, pace or genre. Read-only.

Checks passed
13 / 22

1 failed · 8 not measured

Median response
536 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
6

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Outdated check

Last connection measurement is over 24 hours old. Current availability is unknown.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
400
Publisher identityCan the publisher be traced to its source?
312

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 536 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name shelfclub.

  • Pass
    Lists tools

    tools/list returned 6 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 536 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 536 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Pass
    Parameters documented

    13 of 14 parameters have a description (93%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-10-09T05:41:05.685335Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Shelfclub

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http shelfclub https://mcp.shelfclub.app/mcp

Capabilities

Tools 6

find_books_by_mood

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, or voted for by at least three readers of the book.

Discovered
get_author

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 mood, vibe, pace and genre tags (machine-generated, or voted for by at least three readers of the book).

Discovered
get_book

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 its mood, vibe, pace and genre tags (machine-generated, or voted for by at least three readers of the book). A lookup by id also returns the ShelfClub author id of each author that has an author record, and which of the moods, vibes and pace readers of the book voted for, with how many did. These tools do not return content warnings: if asked, say so, and do not infer them from the tags or present anything as ShelfClub's.

Discovered
get_similar_books

List the books in the ShelfClub catalog whose mood, vibe, pace and genre tags overlap most with those of a given book, chosen from its 10,000 most-read books. The tags are machine-generated, or voted for by at least three readers of the book, 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.

Discovered
get_trending_books

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 mood, vibe and pace tags (machine-generated, or voted for by at least three readers of the book).

Discovered
search_books

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 mood, vibe, pace and genre tags (machine-generated, or voted for by at least three readers of the book).

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected536 ms6