World Time API

World Time API (timeapi.world) is a free REST API that provides current time, timezone information, UTC offset, DST status, and Unix epoch time for any timezone or IP address. Originally hosted at worldtimeapi.org (now sunset), the service continues as a source-available, drop-in compatible successor built on Cloudflare Workers with p99 latency under 40ms. It supports 537 IANA timezones, IP-to-timezone conversion, and IP geolocation. The API returns JSON or plain-text responses and requires no authentication on the free tier.

World Time API publishes 6 API contracts indexed on the APIs.io network, including Geo API, Geo.txt API, Ip API, and 3 more. Tagged areas include Time, Timezone, World Time, UTC, and DST.

The World Time API catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

World Time API’s developer surface includes documentation, engineering blog, pricing, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.1/100 thin ▬ flat Agent 22/100 agent aware Front door AI 1/6 silent Heartbeat 50/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumOpen⚡ Free to try

1 published contract

Time TimezoneWorld TimeUTCDSTDaylight Saving TimeIP GeolocationUnix Epoch

Kin Score

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

Composite quality — 27.1/100 · thin

Contract Quality 10.3 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 3.1 / 17

Operational Transparency 1.5 / 11

Contract Governance 1.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 1.6 / 15

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 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 4 / 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 0 / 5

Distinct Operations 0 / 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
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):

Developer Ergonomics scores 11.9 — up to +17.6 composite points
Access Clarity scores 18.4 — up to +16.3 composite points
Contract Quality scores 48.7 — up to +12.8 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/worldtimeapi/apis.yml: open an issue on github.com/api-evangelist/worldtimeapi 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.

OpenAPI

measured — observed by APIs.io (published)

APIs 6

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

World Time API Geo API

The Geo API from World Time API — 3 operation(s) for geo.

World Time API Geo.txt API

The Geo.txt API from World Time API — 1 operation(s) for geo.txt.

World Time API Ip API

The Ip API from World Time API — 3 operation(s) for ip.

World Time API Ip.txt API

The Ip.txt API from World Time API — 1 operation(s) for ip.txt.

World Time API Timezone API

The Timezone API from World Time API — 7 operation(s) for timezone.

World Time API Timezone.txt API

The Timezone.txt API from World Time API — 1 operation(s) for timezone.txt.

Open Collections 6

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

World Time Geo API

OPEN COLLECTION

World Time Geo Geo.txt API

OPEN COLLECTION

World Time Geo Ip API

OPEN COLLECTION

World Time Geo Ip.txt API

OPEN COLLECTION

World Time Geo Timezone API

OPEN COLLECTION

World Time Geo Timezone.txt API

OPEN COLLECTION

World Time API pricing

Not yet checked against World Time API's own pricing page. Compiled by API Evangelist; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free	Free
Starter	$5
Standard	$10
Pro	$20
Enterprise	—

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Worldtimeapi Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Worldtimeapi Rate Limits

5 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

World Time API

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Worldtimeapi Finops

FINOPS

Semantic Vocabularies 1

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

Worldtimeapi Context

0 classes · 31 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

World Time API — jsonschema rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

DateTimeJsonResponse

15 properties

JSON SCHEMA

GeoJsonResponse

15 properties

JSON SCHEMA

Examples 4

Example request and response payloads for these APIs.

Geo Lookup

4 fields

EXAMPLE

Ip Lookup

4 fields

EXAMPLE

Three Part Timezone Lookup

4 fields

EXAMPLE

Timezone Lookup

4 fields

EXAMPLE

Security Posture 1

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

Worldtimeapi Domain Security

TLSv1.3

SECURITY

Agentic Access 1

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

Worldtimeapi Agentic Access

16 operations

16 operations · 0 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: worldtimeapi
name: World Time API
description: World Time API (timeapi.world) is a free REST API that provides current time, timezone information, UTC offset,
  DST status, and Unix epoch time for any timezone or IP address. Originally hosted at worldtimeapi.org (now sunset), the
  service continues as a source-available, drop-in compatible successor built on Cloudflare Workers with p99 latency under
  40ms. It supports 537 IANA timezones, IP-to-timezone conversion, and IP geolocation. The API returns JSON or plain-text
  responses and requires no authentication on the free tier.
type: Index
deliveryModel:
  model: unknown
  license_evidence:
    repo: sleeyax/world-time-api
    spdx: NOASSERTION
    stars: 13
  open_source: unknown
  commercial: true
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: open
  trial: false
  try_now: true
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Open access
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/worldtimeapi.png
url: https://raw.githubusercontent.com/api-evangelist/worldtimeapi/refs/heads/main/apis.yml
created: 2026-06-13
modified: 2026-06-13
specificationVersion: '0.23'
tags:
- Time
- Timezone
- World Time
- UTC
- DST
- Daylight Saving Time
- IP Geolocation
- Unix Epoch
apis:
- aid: worldtimeapi:worldtimeapi-geo-api
  name: World Time API Geo API
  description: The Geo API from World Time API — 3 operation(s) for geo.
  humanURL: https://timeapi.world/
  baseURL: https://timeapi.world/api
  tags:
  - Geo
  properties:
  - type: OpenAPI
    url: openapi/worldtimeapi-geo-api-openapi.yml
  - type: Documentation
    url: https://timeapi.world/
  - type: Pricing
    url: https://timeapi.world/pricing
  - type: FAQ
    url: https://timeapi.world/faq
  - type: GitHubRepository
    url: https://github.com/sleeyax/world-time-api
- aid: worldtimeapi:worldtimeapi-geo-txt-api
  name: World Time API Geo.txt API
  description: The Geo.txt API from World Time API — 1 operation(s) for geo.txt.
  humanURL: https://timeapi.world/
  baseURL: https://timeapi.world/api
  tags:
  - Geo.txt
  properties:
  - type: OpenAPI
    url: openapi/worldtimeapi-geo-txt-api-openapi.yml
  - type: Documentation
    url: https://timeapi.world/
  - type: Pricing
    url: https://timeapi.world/pricing
  - type: FAQ
    url: https://timeapi.world/faq
  - type: GitHubRepository
    url: https://github.com/sleeyax/world-time-api
- aid: worldtimeapi:worldtimeapi-ip-api
  name: World Time API Ip API
  description: The Ip API from World Time API — 3 operation(s) for ip.
  humanURL: https://timeapi.world/
  baseURL: https://timeapi.world/api
  tags:
  - IP
  tags_raw:
  - Ip
  properties:
  - type: OpenAPI
    url: openapi/worldtimeapi-ip-api-openapi.yml
  - type: Documentation
    url: https://timeapi.world/
  - type: Pricing
    url: https://timeapi.world/pricing
  - type: FAQ
    url: https://timeapi.world/faq
  - type: GitHubRepository
    url: https://github.com/sleeyax/world-time-api
- aid: worldtimeapi:worldtimeapi-ip-txt-api
  name: World Time API Ip.txt API
  description: The Ip.txt API from World Time API — 1 operation(s) for ip.txt.
  humanURL: https://timeapi.world/
  baseURL: https://timeapi.world/api
  tags:
  - Ip.txt
  properties:
  - type: OpenAPI
    url: openapi/worldtimeapi-ip-txt-api-openapi.yml
  - type: Documentation
    url: https://timeapi.world/
  - type: Pricing
    url: https://timeapi.world/pricing
  - type: FAQ
    url: https://timeapi.world/faq
  - type: GitHubRepository
    url: https://github.com/sleeyax/world-time-api
- aid: worldtimeapi:worldtimeapi-timezone-api
  name: World Time API Timezone API
  description: The Timezone API from World Time API — 7 operation(s) for timezone.
  humanURL: https://timeapi.world/
  baseURL: https://timeapi.world/api
  tags:
  - Timezone
  properties:
  - type: OpenAPI
    url: openapi/worldtimeapi-timezone-api-openapi.yml
  - type: Documentation
    url: https://timeapi.world/
  - type: Pricing
    url: https://timeapi.world/pricing
  - type: FAQ
    url: https://timeapi.world/faq
  - type: GitHubRepository
    url: https://github.com/sleeyax/world-time-api
- aid: worldtimeapi:worldtimeapi-timezone-txt-api
  name: World Time API Timezone.txt API
  description: The Timezone.txt API from World Time API — 1 operation(s) for timezone.txt.
  humanURL: https://timeapi.world/
  baseURL: https://timeapi.world/api
  tags:
  - Timezone.txt
  properties:
  - type: OpenAPI
    url: openapi/worldtimeapi-timezone-txt-api-openapi.yml
  - type: Documentation
    url: https://timeapi.world/
  - type: Pricing
    url: https://timeapi.world/pricing
  - type: FAQ
    url: https://timeapi.world/faq
  - type: GitHubRepository
    url: https://github.com/sleeyax/world-time-api
common:
- type: IssueTracker
  url: https://github.com/sleeyax/world-time-api/issues
- type: AgenticAccess
  url: agentic-access/worldtimeapi-agentic-access.yml
- type: DomainSecurity
  url: security/worldtimeapi-domain-security.yml
- type: Website
  url: https://timeapi.world/
- type: Documentation
  url: https://timeapi.world/
- type: GitHubOrg
  url: https://github.com/sleeyax/world-time-api
- type: Blog
  url: https://dev.to/sleeyax/i-built-a-better-world-time-api-14mh
- type: Pricing
  url: https://timeapi.world/pricing
- type: X
  url: https://x.com/sleeyax
- type: Plans
  url: plans/worldtimeapi-plans-pricing.yml
- type: RateLimits
  url: rate-limits/worldtimeapi-rate-limits.yml
- type: FinOps
  url: finops/worldtimeapi-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

World Time API — frequently asked questions

Does World Time API have an API?

Yes. APIs.io lists 6 APIs from World Time API, including World Time API Geo API, World Time API Geo.txt API and World Time API Ip API, and 3 more.

Is there an OpenAPI specification for the World Time API?

Yes. APIs.io indexes 6 OpenAPI specifications for World Time API, each linked for download from this page.

How much does the World Time API cost?

APIs.io lists 5 pricing plans for World Time API, with each plan's price, limits and inclusions under Pricing on this page.

Is the World Time API ready for AI agents?

World Time API has a Kin Score of 27.1 out of 100 (thin) and an Agent Readiness score of 22.2 (agent-aware), scored by API Evangelist on 2026-11-06.

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