Epublys

Epublys provides a free online toolkit for EPUB ebook files, offering merge, split, compress, convert, edit, and validate functions directly in the browser. It runs on Cloudflare Workers with no file storage, ensuring privacy and speed. The service also offers a REST API and MCP server reference for developers to integrate EPUB processing into their applications using an API key.

Epublys is listed with 1 API on the APIs.io network. Tagged areas include Company, Tools, EPUB, Free, and Online.

The Epublys catalog on APIs.io includes 1 JSON-LD context.

Epublys’ developer surface includes changelog, engineering blog, authentication, documentation, pricing, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.3/100 thin Agent 7/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 API 1 MCP Servers 1 Agent Skills

Company Tools EPUB Free Online

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 31.3/100 · thin

Contract Quality 1.4 / 21

Developer Ergonomics 4.4 / 17

Access Clarity 9.0 / 17

Operational Transparency 2.6 / 11

Contract Governance 0.8 / 10

Discoverability 6.4 / 9

Regulatory Posture 4.6 / 15

Agent readiness — 7/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →

10 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 6.7 — up to +23.3 composite points Ask about this →
Developer Ergonomics scores 25.6 — up to +14.9 composite points Ask about this →
Contract Governance scores 8.3 — up to +11.0 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/epublys-com/apis.yml: open an issue on github.com/api-evangelist/epublys-com to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Epublys API

EPUB/PDF ebook manipulation API offering merge, split, compress, convert, validate, and edit metadata. Free tier available, optional API key.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Epublys MCP Server

Remote MCP server at epublys.com.

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

epublys-com-operations

AGENT SKILL

Epublys API pricing

Prices published by Epublys, read 2026-11-07 from epublys.com/pricing.

Plan	Price
Free	$0
Pro	$9/ mo, billed monthly

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Epublys Plans Pricing

2 plans

PLANS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Epublys Com Context

2 classes · 8 properties

JSON-LD

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Epublys Authentication

http · 1 scheme

SECURITY

Epublys Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Epublys Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

JSONLD

Vocabulary

DataModel

Conformance

Access & Security 5

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

Authentication

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 3

The organization behind the API

Blog

Blog

Website

Website

About

About

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: epublys-com
name: Epublys
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://epublys.com/og-image-v2.png
description: Epublys provides a free online toolkit for EPUB ebook files, offering merge, split, compress, convert, edit,
  and validate functions directly in the browser. It runs on Cloudflare Workers with no file storage, ensuring privacy and
  speed. The service also offers a REST API and MCP server reference for developers to integrate EPUB processing into their
  applications using an API key.
url: https://artifacts.apis.io/epublys-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-07 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-07'
modified: '2026-11-07'
tags:
- Company
- Tools
- EPUB
- Free
- Online
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/epublys-com-plans-pricing.yml
- type: JSONLD
  url: json-ld/epublys-com-context.jsonld
- type: Vocabulary
  url: vocabulary/epublys-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/epublys-com-data-model.yml
- type: Security
  url: security/epublys-com-vulnerability-disclosure.yml
- type: Conformance
  url: conformance/epublys-com-conformance.yml
- type: LLMsTxt
  url: llms/epublys-com-llms.txt
- type: MCPServer
  url: mcp/epublys-com-mcp.yml
- type: SecurityTxt
  url: well-known/epublys-com-security.txt
- type: WellKnown
  url: well-known/epublys-com-well-known.yml
- type: Hosts
  url: hosts/epublys-com-hosts.yml
- type: Vendors
  url: vendors/epublys-com-vendors.yml
- type: TermsOfService
  url: https://epublys.com/terms
- type: PrivacyPolicy
  url: https://epublys.com/privacy
- type: Login
  url: https://epublys.com/login
- type: ChangeLog
  url: https://epublys.com/changelog
- type: Blog
  url: https://epublys.com/blog
- type: Authentication
  url: authentication/epublys-com-authentication.yml
- type: VulnerabilityDisclosure
  url: security/epublys-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/epublys-com-domain-security.yml
- type: Website
  url: https://epublys.com/
- type: Documentation
  url: https://epublys.com/docs
- type: Pricing
  url: https://epublys.com/pricing
- type: About
  url: https://epublys.com/about
apis:
- name: Epublys API
  description: EPUB/PDF ebook manipulation API offering merge, split, compress, convert, validate, and edit metadata. Free
    tier available, optional API key.
  humanURL: https://epublys.com/docs
  baseURL: https://epublys.com/v1
  aid: epublys-com:epublys-api
x-enrichment:
  date: '2026-11-07'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Epublys API — frequently asked questions

Does Epublys have an API?

Yes. APIs.io lists 1 API from Epublys, including Epublys API.

How do I authenticate with the Epublys API?

Epublys uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Epublys Authentication.

How much does the Epublys API cost?

Epublys publishes its prices; its Free plan is $0 as of 2026-11-07. APIs.io lists 2 pricing plans for Epublys, with each plan's price, limits and inclusions under Pricing on this page.

Does Epublys have an MCP server?

Yes. APIs.io lists 1 MCP server for Epublys: Remote MCP server at epublys.com.

Is the Epublys API ready for AI agents?

Epublys has a Kin Score of 31.3 out of 100 (thin) and an Agent Readiness score of 6.9 (agent-aware), scored by API Evangelist on 2026-11-13.

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get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
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find_cohortsEvery scored population of providers in the catalog.

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