Cron Translator

Cron Translator is a free web tool that translates cron expressions into plain English and back, providing next run times, timezone handling, and handling of common cron pitfalls. It offers a JSON API and an MCP server for programmatic access, supporting explain, next-runs, and build operations without authentication.

Cron Translator publishes 3 API contracts indexed on the APIs.io network: Build API, Explain API, and Next Runs API. Tagged areas include Cron, Translator, CronExpressions, and Scheduler.

The Cron Translator catalog on APIs.io includes 1 Spectral governance ruleset.

Cron Translator’s developer surface includes changelog, documentation, API reference, and 11 more developer resources.

🌐 Visit website📡 Profile data on GitHub
24.7/100 emerging Agent 24/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →
1 published contract
CronTranslatorCronExpressionsScheduler

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0
Composite quality — 24.7/100 · emerging
Contract Quality 10.5 / 21
Developer Ergonomics 2.8 / 17
Access Clarity 0.0 / 17
Operational Transparency 1.7 / 11
Contract Governance 1.9 / 10
Discoverability 4.6 / 9
Regulatory Posture 1.6 / 15
Agent readiness — 24/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 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
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/.
Show this score on your site. Kin Score badge preview for Cron Translator It updates itself when the score changes. Paste this where you link to your API docs: 
<a href="https://apis.io/providers/crontoenglish-com/"><img src="https://apis.io/badge/crontoenglish-com/card.svg" alt="Cron Translator 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):
  • 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
  • Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
  • Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
  • Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
8 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/crontoenglish-com/apis.yml: open an issue on github.com/api-evangelist/crontoenglish-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 2

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)
OpenAPI
measured — observed by APIs.io (published)

APIs 3

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

Cron Translator Build API

The Build API from Cron Translator — 1 operation(s) for build.

Cron Translator Explain API

The Explain API from Cron Translator — 1 operation(s) for explain.

Cron Translator Next Runs API

The Next Runs API from Cron Translator — 1 operation(s) for next runs.

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Cron Translator API Rules

41 rules · 39 errors 1 warnings 1 info

SPECTRAL

Security Posture 1

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

Crontoenglish Com Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Crontoenglish Com Agentic Access

3 operations

3 operations · 0 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 MCP
MCP
 llms.txt
llms.txt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral
Spectral
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance

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 2

Properties that don't map to a standard resource type

Hosts
Hosts
 Vendors
Vendors

Source (apis.yml)

apis.yml Raw ↑ 
aid: crontoenglish-com
name: Cron Translator
description: Cron Translator is a free web tool that translates cron expressions into plain English and back, providing next
  run times, timezone handling, and handling of common cron pitfalls. It offers a JSON API and an MCP server for programmatic
  access, supporting explain, next-runs, and build operations without authentication.
url: https://artifacts.apis.io/crontoenglish-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-11-04'
modified: '2026-11-04'
tags:
- Cron
- Translator
- CronExpressions
- Scheduler
tags_raw:
- Cron
- Translator
- CronExpressions
- Scheduler
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/crontoenglish-com-agentic-access.yml
- type: Spectral
  url: rules/crontoenglish-com-rules.yml
- type: ChangeLog
  url: changelog/crontoenglish-com-changelog.yml
- type: ErrorCatalog
  url: errors/crontoenglish-com-problem-types.yml
- type: Conformance
  url: conformance/crontoenglish-com-conformance.yml
- type: LLMsTxt
  url: llms/crontoenglish-com-llms.txt
- type: Hosts
  url: hosts/crontoenglish-com-hosts.yml
- type: Vendors
  url: vendors/crontoenglish-com-vendors.yml
- type: DomainSecurity
  url: security/crontoenglish-com-domain-security.yml
- type: Website
  url: https://crontoenglish.com/
- type: Documentation
  url: https://crontoenglish.com/docs
- type: APIReference
  url: https://crontoenglish.com/.well-known/openapi.json
- type: MCP
  url: https://crontoenglish.com/api/mcp
- type: llms.txt
  url: https://crontoenglish.com/llms.txt
apis:
- aid: crontoenglish-com:crontoenglish-com-build-api
  name: Cron Translator Build API
  description: The Build API from Cron Translator — 1 operation(s) for build.
  humanURL: https://crontoenglish.com/docs
  baseURL: https://crontoenglish.com
  tags:
  - Builds
  tags_raw:
  - Build
  properties:
  - type: OpenAPI
    url: openapi/crontoenglish-com-build-api-openapi.yml
- aid: crontoenglish-com:crontoenglish-com-explain-api
  name: Cron Translator Explain API
  description: The Explain API from Cron Translator — 1 operation(s) for explain.
  humanURL: https://crontoenglish.com/docs
  baseURL: https://crontoenglish.com
  tags:
  - Explain
  properties:
  - type: OpenAPI
    url: openapi/crontoenglish-com-explain-api-openapi.yml
- aid: crontoenglish-com:crontoenglish-com-next-runs-api
  name: Cron Translator Next Runs API
  description: The Next Runs API from Cron Translator — 1 operation(s) for next runs.
  humanURL: https://crontoenglish.com/docs
  baseURL: https://crontoenglish.com
  tags:
  - Next Runs
  properties:
  - type: OpenAPI
    url: openapi/crontoenglish-com-next-runs-api-openapi.yml
x-enrichment:
  date: '2026-11-04'
  status: enriched
  artifacts_added: 17
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Cron Translator API — frequently asked questions

Does Cron Translator have an API?

Yes. APIs.io lists 3 APIs from Cron Translator, including Cron Translator Build API, Cron Translator Explain API and Cron Translator Next Runs API.

Is there an OpenAPI specification for the Cron Translator API?

Yes. APIs.io indexes 3 OpenAPI specifications for Cron Translator, each linked for download from this page.

Is the Cron Translator API ready for AI agents?

Cron Translator has a Kin Score of 24.7 out of 100 (emerging) and an Agent Readiness score of 23.6 (agent-aware), scored by API Evangelist on 2026-11-06.

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