Audnexus

Audnexus provides an API that aggregates audiobook metadata and availability information from multiple sources, offering developers a unified endpoint to search, retrieve details, and integrate audiobook data into applications. The service includes endpoints for authors, books, chapters, and search capabilities, and is documented via an interactive Redoc UI. It is open-source, hosted on GitHub, and licensed under GPL v3.

Audnexus is listed with 1 API on the APIs.io network. Tagged areas include Company, Audiobooks, Metadata, Search, and OpenSource.

Audnexus’ developer surface includes getting-started guide and 5 more developer resources.

🌐 Visit website📡 Profile data on GitHub
18.1/100 emerging Agent 19/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →
1 API
CompanyAudiobooksMetadataSearchOpenSource

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0
Composite quality — 18.1/100 · emerging
Contract Quality 7.0 / 21
Developer Ergonomics 2.0 / 17
Access Clarity 0.0 / 17
Operational Transparency 1.7 / 11
Contract Governance 0.5 / 10
Discoverability 5.3 / 9
Regulatory Posture 0.9 / 15
Agent readiness — 19/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 12
Machine-Readable Auth 0 / 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 0 / 5
Well-Known Catalog 4 / 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
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/.
Show this score on your site. Kin Score badge preview for Audnexus It updates itself when the score changes. Paste this where you link to your API docs: 
<a href="https://apis.io/providers/audnexus/"><img src="https://apis.io/badge/audnexus/card.svg" alt="Audnexus on APIs.io — Kin Score by API Evangelist"></a>
Other styles, a README pill and a shields.io endpoint are on the badge page.
Raise your score.
Agent readiness — checks not met, largest first (exact, from this profile):
  • Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
  • Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
  • 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)
  • A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
  • Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
  • Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
10 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
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.
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/audnexus/apis.yml: open an issue on github.com/api-evangelist/audnexus 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 →

APIs 1

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

Audnexus API

Audnexus provides endpoints for audiobook metadata aggregation.

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Audnexus Openapi Overlay

0 actions · update

UNRECORDED

Security Posture 1

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

Audnexus Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage
StatusPage

Company 1

The organization behind the API

Website
Website

Other 2

Properties that don't map to a standard resource type

Hosts
Hosts
 Vendors
Vendors

Source (apis.yml)

apis.yml Raw ↑ 
aid: audnexus
name: Audnexus
description: Audnexus provides an API that aggregates audiobook metadata and availability information from multiple sources,
  offering developers a unified endpoint to search, retrieve details, and integrate audiobook data into applications. The
  service includes endpoints for authors, books, chapters, and search capabilities, and is documented via an interactive Redoc
  UI. It is open-source, hosted on GitHub, and licensed under GPL v3.
url: https://artifacts.apis.io/audnexus/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-28 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-28'
modified: '2026-10-28'
tags:
- Company
- Audiobooks
- Metadata
- Search
- OpenSource
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Hosts
  url: hosts/audnexus-hosts.yml
- type: Vendors
  url: vendors/audnexus-vendors.yml
- type: StatusPage
  url: https://status.audnex.us/status/audnexus
- type: DomainSecurity
  url: security/audnexus-domain-security.yml
- type: Website
  url: https://audnex.us/
- type: GettingStarted
  url: https://audnex.us/#/
apis:
- name: Audnexus API
  description: Audnexus provides endpoints for audiobook metadata aggregation.
  humanURL: https://audnex.us/
  baseURL: https://api.audnex.us
  aid: audnexus:audnexus-api
x-submission-probe: 200, 2026-10-26
x-enrichment:
  date: '2026-10-28'
  status: enriched
  artifacts_added: 7
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Audnexus API — frequently asked questions

Does Audnexus have an API?

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

Is there an OpenAPI specification for the Audnexus API?

Yes. APIs.io indexes 1 OpenAPI specification for Audnexus, each linked for download from this page.

Is the Audnexus API ready for AI agents?

Audnexus has a Kin Score of 18.1 out of 100 (emerging) and an Agent Readiness score of 18.9 (agent-aware), scored by API Evangelist on 2026-10-31.

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