Caighdean (cadhan.com)

Caighdean (cadhan.com) is an Irish language digital resource platform offering a suite of linguistic tools, dictionaries, spell‑checkers, and corpora. It provides open‑source APIs for Gaelic, Irish, Manx, and other Celtic languages, supporting developers, researchers, and language learners with access to lexical data, grammar resources, and text processing services.

Caighdean (cadhan.com) is listed with 1 API on the APIs.io network. Tagged areas include Company, Language, Open-source, Irish, and Celtic.

Caighdean (cadhan.com)’s developer surface includes changelog and 3 more developer resources.

🌐 Visit website📡 Profile data on GitHub
6.0/100 minimal Agent 0/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →
1 API
CompanyLanguageOpen-sourceIrishCeltic

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0
Composite quality — 6.0/100 · minimal
Contract Quality 0.0 / 21
Developer Ergonomics 0.0 / 17
Access Clarity 0.0 / 17
Operational Transparency 1.7 / 11
Contract Governance 0.0 / 10
Discoverability 4.6 / 9
Regulatory Posture 0.9 / 15
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 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 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
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
  • MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
  • 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
13 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/caighdean/apis.yml: open an issue on github.com/api-evangelist/caighdean 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.

Caighdean API

Provides linguistic data and tools for Irish and other Celtic languages via a public API documented on GitHub.

Security Posture 1

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

Caighdean Domain Security

TLSv1.3

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

ChangeLog
ChangeLog

Company 1

The organization behind the API

Website
Website

Other 1

Properties that don't map to a standard resource type

Hosts
Hosts

Source (apis.yml)

apis.yml Raw ↑ 
aid: caighdean
name: Caighdean (cadhan.com)
description: Caighdean (cadhan.com) is an Irish language digital resource platform offering a suite of linguistic tools, dictionaries,
  spell‑checkers, and corpora. It provides open‑source APIs for Gaelic, Irish, Manx, and other Celtic languages, supporting
  developers, researchers, and language learners with access to lexical data, grammar resources, and text processing services.
url: https://raw.githubusercontent.com/api-evangelist/caighdean/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-27 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-27'
modified: '2026-10-27'
tags:
- Company
- Language
- Open-source
- Irish
- Celtic
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Hosts
  url: hosts/caighdean-hosts.yml
- type: ChangeLog
  url: https://github.com/kscanne/filiocht/releases
- type: DomainSecurity
  url: security/caighdean-domain-security.yml
- type: Website
  url: https://cadhan.com/
apis:
- name: Caighdean API
  description: Provides linguistic data and tools for Irish and other Celtic languages via a public API documented on GitHub.
  humanURL: https://github.com/kscanne/caighdean/blob/master/API.md
  baseURL: null
  aid: caighdean:caighdean-api
x-submission-probe: 200, 2026-10-26
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: No OpenAPI, AsyncAPI, GraphQL, or other machine‑readable contract is published; only API documentation links are
    on GitHub.
  evidence:
  - url: https://cadhan.com/openapi.json
    status: 404
  checked: '2026-10-27'
x-enrichment:
  date: '2026-10-27'
  status: enriched
  artifacts_added: 8
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Caighdean (cadhan.com) API — frequently asked questions

Does Caighdean (cadhan.com) have an API?

Yes. APIs.io lists 1 API from Caighdean (cadhan.com), including Caighdean API.

Is the Caighdean (cadhan.com) API ready for AI agents?

Caighdean (cadhan.com) has a Kin Score of 6.0 out of 100 (minimal) and an Agent Readiness score of 0.0 (human-only), scored by API Evangelist on 2026-10-31.

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