OpenHistoricalMap time-aware basemap style

OpenHistoricalMap provides a time-aware basemap style that visualizes historical geographic data across different eras. It is an open, nonprofit project affiliated with the OpenStreetMap Foundation, offering an interactive map where users can explore, edit, and contribute historical map data. The platform supports various routing engines, data export, and user-contributed diaries, aiming to make historical geospatial information publicly accessible and reusable.

OpenHistoricalMap time-aware basemap style is listed with 1 API on the APIs.io network. Tagged areas include Mapping, Historical, Open-Source, Nonprofit, and Geospatial.

OpenHistoricalMap time-aware basemap style’s developer surface includes support and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

7.4/100 minimal Agent 0/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

Mapping HistoricalOpen-SourceNonprofitGeospatial Community

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 7.4/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 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):

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 11.9 — up to +17.6 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/openhistoricalmap/apis.yml: open an issue on github.com/api-evangelist/openhistoricalmap 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.

OpenHistoricalMap API

The OpenHistoricalMap platform provides a time‑aware basemap style and map data access via its web interface, but no public machine‑readable API specification was found.

Security Posture 1

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

Openhistoricalmap Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

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: openhistoricalmap
name: OpenHistoricalMap time-aware basemap style
description: OpenHistoricalMap provides a time-aware basemap style that visualizes historical geographic data across different
  eras. It is an open, nonprofit project affiliated with the OpenStreetMap Foundation, offering an interactive map where users
  can explore, edit, and contribute historical map data. The platform supports various routing engines, data export, and user-contributed
  diaries, aiming to make historical geospatial information publicly accessible and reusable.
url: https://artifacts.apis.io/openhistoricalmap/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:
- Mapping
- Historical
- Open-Source
- Nonprofit
- Geospatial
- Community
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://upload.wikimedia.org/wikipedia/commons/d/de/OpenHistoricalMap_logo.svg
common:
- type: Hosts
  url: hosts/openhistoricalmap-hosts.yml
- type: Vendors
  url: vendors/openhistoricalmap-vendors.yml
- type: SDKs
  url: packages/openhistoricalmap-packages.yml
- type: Packages
  url: packages/openhistoricalmap-packages.yml
- type: Support
  url: https://www.openhistoricalmap.org/help
- type: GitHubOrganization
  url: https://github.com/OpenHistoricalMap
- type: DomainSecurity
  url: security/openhistoricalmap-domain-security.yml
- type: Website
  url: https://openhistoricalmap.org/
apis:
- name: OpenHistoricalMap API
  description: The OpenHistoricalMap platform provides a time‑aware basemap style and map data access via its web interface,
    but no public machine‑readable API specification was found.
  humanURL: https://www.openhistoricalmap.org/
  baseURL: null
  aid: openhistoricalmap:openhistoricalmap-api
x-submission-probe: 200, 2026-10-26
x-coverage:
  state: unreadable
  reason: js-rendered-docs
  detail: The provider's documentation site renders via JavaScript, preventing automated extraction of a machine‑readable
    API specification.
  evidence:
  - url: https://www.openhistoricalmap.org/
    status: 200
  checked: '2026-10-28'
x-enrichment:
  date: '2026-10-28'
  status: enriched
  artifacts_added: 8
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

OpenHistoricalMap time-aware basemap style API — frequently asked questions

Does OpenHistoricalMap time-aware basemap style have an API?

Yes. APIs.io lists 1 API from OpenHistoricalMap time-aware basemap style, including OpenHistoricalMap API.

Is the OpenHistoricalMap time-aware basemap style API ready for AI agents?

OpenHistoricalMap time-aware basemap style has a Kin Score of 7.4 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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