# Book Search (Open Library) (remote · invokera.com)

Search books and authors across Open Library, the Internet Archive open catalog.

- Trust score: 68/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-06

## Components

- remote · `invokera.com`: 68/100 (this document), [markdown](https://verifymcp.io/servers/com-invokera-book-search/r-book-search.md), [page](https://verifymcp.io/servers/com-invokera-book-search/r-book-search)

## Channel facts

- Endpoint: `https://invokera.com/r/book-search`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-06.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 186 tokens (~93/item across 2 items; 2 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http com-invokera-book-search https://invokera.com/r/book-search
```

### Codex

```toml
[mcp_servers.com-invokera-book-search]
url = "https://invokera.com/r/book-search"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-invokera-book-search": {
      "type": "remote",
      "url": "https://invokera.com/r/book-search",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-invokera-book-search --url https://invokera.com/r/book-search --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-invokera-book-search:
    url: "https://invokera.com/r/book-search"
```

### Other

```json
{
  "mcpServers": {
    "com-invokera-book-search": {
      "type": "http",
      "url": "https://invokera.com/r/book-search"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-06 (score 68, +26)

- [security improvement] Authorization: unverified → partial
- [functional regression] Schema quality: 22 → 93
- [functional regression] Schema quality: unverified → fail
- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Tool coverage: 100
- [functional] Schema quality: poor → good
- [functional] New tool “search_authors”
- [functional] New tool “search_books”

### 2026-08-05 (score 42, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-08-04 (score 42)

First indexed and scored.

## MCP tools (2)

### `search_authors` (~63 tokens)

Search authors by name. Returns author records (name, birth date, top work, work count) matching the query. Returns: Matching author records..

Input parameters:

- `q` (string, required): Author name to search for, e.g. "Ursula K. Le Guin".

### `search_books` (~101 tokens)

Search books by keyword. Full-text search across titles, authors and subjects. Keep "fields" small to avoid huge responses. Returns: Matching book records..

Input parameters:

- `fields` (string): Comma-separated list of fields to include in each result. A compact default keeps responses small.
- `limit` (integer): Maximum number of results to return. Defaults to 10.
- `q` (string, required): Search keywords, e.g. a title, author or subject.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-invokera-book-search/r-book-search#diagnostics

## Score history

- 2026-08-06: 68
- 2026-08-05: 42
- 2026-08-04: 42

## Links

- Remote endpoint: https://invokera.com/r/book-search
- Website: https://invokera.com/mcp/book-search
- Changelog RSS feed: https://verifymcp.io/servers/com-invokera-book-search/r-book-search.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-invokera-book-search/r-book-search.json
- HTML version of this page: https://verifymcp.io/servers/com-invokera-book-search/r-book-search