Drivers' Hours Calculator

Drivers' Hours Calculator provides an online EU drivers' hours calculator for HGV operators, allowing them to plan legal driving and rest times. The tool computes remaining daily, weekly and fortnightly driving time and required breaks, helping fleet managers ensure compliance with EU and UK regulations. It offers a free web application with detailed guidance on limits, rest periods, and rostering scenarios.

Drivers’ Hours Calculator publishes 1 API contract indexed on the APIs.io network: Calculator API. Tagged areas include Drivers, EU, HGV, Compliance, and Calculator.

The Drivers’ Hours Calculator catalog on APIs.io includes 1 Spectral governance ruleset.

Drivers’ Hours Calculator’s developer surface includes authentication and 19 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

32.6/100 thin Agent 27/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

Drivers EUHGVCompliance Calculator

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 32.6/100 · thin

Contract Quality 10.9 / 21

Developer Ergonomics 2.3 / 17

Access Clarity 3.6 / 17

Operational Transparency 1.2 / 11

Contract Governance 2.2 / 10

Discoverability 5.5 / 9

Regulatory Posture 4.6 / 15

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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

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):

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)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
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)

6 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 13.7 — up to +17.3 composite points
Access Clarity scores 21.1 — up to +15.8 composite points
Contract Quality scores 51.4 — up to +12.2 composite points

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/drivershourscalculator-co-uk/apis.yml: open an issue on github.com/api-evangelist/drivershourscalculator-co-uk 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 1

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

Drivers' Hours Calculator Calculator API

calculator

MCP Servers 1

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

Drivers' Hours Calculator MCP Server

Remote MCP server at drivershourscalculator.co.uk.

MCP SERVER

Agent Skills 1

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

drivershourscalculator-co-uk-calculator-workflow

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Drivers' Hours Calculator API Rules

51 rules · 49 errors 1 warnings 1 info

SPECTRAL

Security Posture 3

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

Drivershourscalculator Co Uk Authentication

http · 1 scheme

SECURITY

Drivershourscalculator Co Uk Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Drivershourscalculator Co Uk Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Drivershourscalculator Co Uk Agentic Access

2 operations · 2 acting

AGENTIC

Resources

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 5

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

Authentication

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

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)

aid: drivershourscalculator-co-uk
name: Drivers' Hours Calculator
description: Drivers' Hours Calculator provides an online EU drivers' hours calculator for HGV operators, allowing them to
  plan legal driving and rest times. The tool computes remaining daily, weekly and fortnightly driving time and required breaks,
  helping fleet managers ensure compliance with EU and UK regulations. It offers a free web application with detailed guidance
  on limits, rest periods, and rostering scenarios.
url: https://artifacts.apis.io/drivershourscalculator-co-uk/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-06 (modular-v1; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-11-05'
modified: '2026-11-05'
tags:
- Drivers
- EU
- HGV
- Compliance
- Calculator
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://drivershourscalculator.co.uk/icon-512.png
common:
- type: AgenticAccess
  url: agentic-access/drivershourscalculator-co-uk-agentic-access.yml
- type: Spectral
  url: rules/drivershourscalculator-co-uk-rules.yml
- type: Vocabulary
  url: vocabulary/drivershourscalculator-co-uk-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Security
  url: https://drivershourscalculator.co.uk/terms
- type: ErrorCatalog
  url: errors/drivershourscalculator-co-uk-problem-types.yml
- type: Conformance
  url: conformance/drivershourscalculator-co-uk-conformance.yml
- type: LLMsTxt
  url: llms/drivershourscalculator-co-uk-llms.txt
- type: ToolCrosswalk
  url: mcp/drivershourscalculator-co-uk-tool-crosswalk.yml
- type: MCPServer
  url: mcp/drivershourscalculator-co-uk-mcp.yml
- type: SecurityTxt
  url: well-known/drivershourscalculator-co-uk-security.txt
- type: WellKnown
  url: well-known/drivershourscalculator-co-uk-well-known.yml
- type: Hosts
  url: hosts/drivershourscalculator-co-uk-hosts.yml
- type: Vendors
  url: vendors/drivershourscalculator-co-uk-vendors.yml
- type: TermsOfService
  url: https://drivershourscalculator.co.uk/terms/
- type: PrivacyPolicy
  url: https://drivershourscalculator.co.uk/privacy/
- type: Authentication
  url: authentication/drivershourscalculator-co-uk-authentication.yml
- type: VulnerabilityDisclosure
  url: security/drivershourscalculator-co-uk-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/drivershourscalculator-co-uk-domain-security.yml
- type: Website
  url: https://drivershourscalculator.co.uk/
apis:
- aid: drivershourscalculator-co-uk:drivershourscalculator-co-uk-calculator-api
  name: Drivers' Hours Calculator Calculator API
  description: calculator
  humanURL: https://drivershourscalculator.co.uk/
  baseURL: https://drivershourscalculator.co.uk
  tags:
  - Calculator
  tags_raw:
  - calculator
  properties:
  - type: OpenAPI
    url: openapi/drivershourscalculator-co-uk-calculator-api-openapi.yml
x-enrichment:
  date: '2026-11-06'
  status: enriched
  artifacts_added: 24
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Drivers' Hours Calculator API — frequently asked questions

Does Drivers' Hours Calculator have an API?

Yes. APIs.io lists 1 API from Drivers' Hours Calculator, including Drivers' Hours Calculator Calculator API.

Is there an OpenAPI specification for the Drivers' Hours Calculator API?

Yes. APIs.io indexes 1 OpenAPI specification for Drivers' Hours Calculator, each linked for download from this page.

How do I authenticate with the Drivers' Hours Calculator API?

Drivers' Hours Calculator uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Drivershourscalculator Co Uk Authentication.

Does Drivers' Hours Calculator have an MCP server?

Yes. APIs.io lists 1 MCP server for Drivers' Hours Calculator: Remote MCP server at drivershourscalculator.co.uk.

Is the Drivers' Hours Calculator API ready for AI agents?

Drivers' Hours Calculator has a Kin Score of 32.6 out of 100 (thin) and an Agent Readiness score of 26.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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