Ebook File Check
https://powmcp.com/epub-check/mcp ↗
Description
Run EPUBCheck for EPUB specification errors and compare two exports.
What our measurements say
Ebook File Check is a remote MCP server published at powmcp.com. It has been probed 7 times since 9/12/2026. It answered in 7 of them (100.0%), a near-uninterrupted record. Median response time is 408 ms, placing it among the faster endpoints. It offers a narrow, focused set of 2 tools. On the protocol side it speaks the 2026-07-28 stateless spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names (ebook_check, ebook_compare) clearly indicate their distinct purposes.
Weaknesses
- Descriptions are cut off mid-sentence, leaving outputs and use cases ambiguous.
- Parameter types (e.g., 'file' as object, 'files' as array) lack detailed structure definitions.
- No explicit error handling for conflicting inputs (e.g., providing both url/file).
ebook_check— Description truncated mid-sentence, missing critical output details.ebook_compare— Description truncated, no explanation of regression/fixed findings reporting.ebook_check— Parameters 'url' and 'file' are both optional but mutually exclusive; no validation logic implied.
Verdict
Event narrative
Risk: low
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test failed: —
- Cold-start: cold 116ms → warm 113ms (penalty 3ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
ebook_checkValidates one EPUB (a directly hosted public URL or a file attached in chat) against the EPUB 2/3 specification using a pinned local EPUBCheck 5.3.0 engine run in a no-network sandbox. Each call takes exactly one source: the url parameter or the file attachment, never both. Returns the automated verdict: pass boolean, EPUB version, message counts by severity (fatal/error/warning/usage), findings grouped most-severe-first with EPUBCheck rule id (RSC-005, OPF-014, …), file path and line/column, plus a structural inventory (spine items, media types, remote-resource state), SHA-256 of the exact bytes, and truncation metadata. Use for one-file readiness and diagnosis: 'is this ebook valid', 'does this EPUB have specification problems before upload', 'what is wrong with it'. A pass means only th
urlstringfileobjectmaxMessagesinteger
ebook_compareRuns the identical pinned EPUBCheck 5.3.0 validation over exactly two EPUB builds (directly hosted public URLs or files attached in chat, baseline first, revised second) sequentially under one shared 110-second deadline, then reports which spec findings regressed or were fixed between them. Returns per-build hashes, EPUB versions, pass verdicts and severity counts, a regressions list (rules that appear or worsen in the revised build) and a fixed list (rules removed or reduced), and a ranking by pass state then fewer blocking findings. Use for 'did my re-export get worse', 'which build has fewer problems', and revision-over-revision questions. The ranking orders automated conformance only (it never means one build renders, reads, or sells better), and when both builds tie on pass state and
urlsarrayfilesarraymaxMessagesinteger
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Dual-era
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[](https://mcpmetrics.io/servers/com-powmcp-epub-check)<a href="https://mcpmetrics.io/servers/com-powmcp-epub-check"><img src="https://mcpmetrics.io/badge/com.powmcp/epub-check/era.svg" alt="mcpmetrics"></a>You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.
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