Macrostrat

Macrostrat is a platform for the aggregation and distribution of geological data relevant to the spatial and temporal distribution of sedimentary, igneous, and metamorphic rocks as well as data extracted from them.

Macrostrat publishes 14 API contracts indexed on the APIs.io network, including Age Model API, Cartography API, Columns API, and 11 more. Tagged areas include Geological Data, Geology, Rocks, Paleontology, and Earth Science.

The Macrostrat catalog on APIs.io includes 1 Spectral governance ruleset.

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21.6/100 emerging ▬ flat Agent 20/100 agent aware Front door AI 2/6 trace Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

1 published contract

Geological DataGeology RocksPaleontologyEarth Science

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 21.6/100 · emerging

Contract Quality 9.2 / 21

Developer Ergonomics 1.6 / 17

Access Clarity 1.1 / 17

Operational Transparency 1.3 / 11

Contract Governance 1.4 / 10

Discoverability 5.6 / 9

Regulatory Posture 0.0 / 15

Agent readiness — 20/100 · 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 0 / 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 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 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 Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

7 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 6.4 — up to +18.7 composite points Ask about this →
Developer Ergonomics scores 9.5 — up to +18.1 composite points Ask about this →
Contract Quality scores 43.5 — up to +14.1 composite points Ask about this →

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.

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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/macrostrat/apis.yml: open an issue on github.com/api-evangelist/macrostrat 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 14

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

Macrostrat Age Model API

The Age Model API from Macrostrat — 1 operation(s) for age model.

Macrostrat Cartography API

The Cartography API from Macrostrat — 1 operation(s) for cartography.

Macrostrat Columns API

The Columns API from Macrostrat — 1 operation(s) for columns.

Macrostrat Definitions API

The Definitions API from Macrostrat — 1 operation(s) for definitions.

Macrostrat Fossils API

The Fossils API from Macrostrat — 1 operation(s) for fossils.

Macrostrat Geologic Maps API

The Geologic Maps API from Macrostrat — 3 operation(s) for geologic maps.

Macrostrat Grids API

The Grids API from Macrostrat — 1 operation(s) for grids.

Macrostrat Measurements API

The Measurements API from Macrostrat — 1 operation(s) for measurements.

Macrostrat Meta API

The Meta API from Macrostrat — 1 operation(s) for meta.

Macrostrat Mobile API

The Mobile API from Macrostrat — 1 operation(s) for mobile.

Macrostrat Paleogeography API

The Paleogeography API from Macrostrat — 1 operation(s) for paleogeography.

Macrostrat Sections API

The Sections API from Macrostrat — 1 operation(s) for sections.

Macrostrat Stats API

The Stats API from Macrostrat — 1 operation(s) for stats.

Macrostrat Units API

The Units API from Macrostrat — 1 operation(s) for units.

Scroll for all 14

Open Collections 15

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

Macrostrat Age Model API

OPEN COLLECTION

Macrostrat Age Model Cartography API

OPEN COLLECTION

Macrostrat Age Model Columns API

OPEN COLLECTION

Macrostrat Age Model Definitions API

OPEN COLLECTION

Macrostrat Age Model Fossils API

OPEN COLLECTION

Macrostrat Age Model Geologic Maps API

OPEN COLLECTION

Macrostrat Age Model Grids API

OPEN COLLECTION

Macrostrat Age Model Measurements API

OPEN COLLECTION

Macrostrat Age Model Meta API

OPEN COLLECTION

Macrostrat Age Model Mobile API

OPEN COLLECTION

Macrostrat Age Model Paleogeography API

OPEN COLLECTION

Macrostrat Age Model Sections API

OPEN COLLECTION

Macrostrat Age Model Stats API

OPEN COLLECTION

Macrostrat Age Model Units API

OPEN COLLECTION

Macrostrat API

OPEN COLLECTION

Scroll for all 15

Macrostrat API pricing

Not yet checked against Macrostrat's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Macrostrat's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Macrostrat Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Macrostrat Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Macrostrat Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Macrostrat API Rules

47 rules · 45 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 1

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

Macrostrat Domain Security

TLSv1.3

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

Macrostrat Agentic Access

16 operations

16 operations · 0 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: macrostrat
name: Macrostrat
description: Macrostrat is a platform for the aggregation and distribution of geological data relevant to the spatial and
  temporal distribution of sedimentary, igneous, and metamorphic rocks as well as data extracted from them.
kind: contract
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/macrostrat.png
url: https://raw.githubusercontent.com/api-evangelist/macrostrat/refs/heads/main/apis.yml
tags:
- Geological Data
- Geology
- Rocks
- Paleontology
- Earth Science
created: '2024-11-14'
modified: '2026-09-16'
specificationVersion: '0.23'
common:
- type: Plans
  url: plans/macrostrat-plans-pricing.yml
- type: RateLimits
  url: rate-limits/macrostrat-rate-limits.yml
- type: FinOps
  url: finops/macrostrat-finops.yml
- type: Website
  url: https://macrostrat.org
- type: AgenticAccess
  url: agentic-access/macrostrat-agentic-access.yml
- type: DomainSecurity
  url: security/macrostrat-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/uw-macrostrat
apis:
- aid: macrostrat:macrostrat-age-model-api
  name: Macrostrat Age Model API
  description: The Age Model API from Macrostrat — 1 operation(s) for age model.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Age Model
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-age-model-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-cartography-api
  name: Macrostrat Cartography API
  description: The Cartography API from Macrostrat — 1 operation(s) for cartography.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Cartography
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-cartography-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-columns-api
  name: Macrostrat Columns API
  description: The Columns API from Macrostrat — 1 operation(s) for columns.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Columns
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-columns-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-definitions-api
  name: Macrostrat Definitions API
  description: The Definitions API from Macrostrat — 1 operation(s) for definitions.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Definitions
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-definitions-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-fossils-api
  name: Macrostrat Fossils API
  description: The Fossils API from Macrostrat — 1 operation(s) for fossils.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Fossils
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-fossils-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-geologic-maps-api
  name: Macrostrat Geologic Maps API
  description: The Geologic Maps API from Macrostrat — 3 operation(s) for geologic maps.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Geologic Maps
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-geologic-maps-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-grids-api
  name: Macrostrat Grids API
  description: The Grids API from Macrostrat — 1 operation(s) for grids.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Grids
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-grids-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-measurements-api
  name: Macrostrat Measurements API
  description: The Measurements API from Macrostrat — 1 operation(s) for measurements.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Measurements
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-measurements-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-meta-api
  name: Macrostrat Meta API
  description: The Meta API from Macrostrat — 1 operation(s) for meta.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Meta
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-meta-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-mobile-api
  name: Macrostrat Mobile API
  description: The Mobile API from Macrostrat — 1 operation(s) for mobile.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Mobile
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-mobile-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-paleogeography-api
  name: Macrostrat Paleogeography API
  description: The Paleogeography API from Macrostrat — 1 operation(s) for paleogeography.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Paleogeography
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-paleogeography-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-sections-api
  name: Macrostrat Sections API
  description: The Sections API from Macrostrat — 1 operation(s) for sections.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Sections
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-sections-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-stats-api
  name: Macrostrat Stats API
  description: The Stats API from Macrostrat — 1 operation(s) for stats.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Stats
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-stats-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
- aid: macrostrat:macrostrat-units-api
  name: Macrostrat Units API
  description: The Units API from Macrostrat — 1 operation(s) for units.
  humanURL: https://macrostrat.org
  baseURL: https://macrostrat.org/api/v2
  tags:
  - Units
  properties:
  - type: OpenAPI
    url: openapi/macrostrat-units-api-openapi.yml
  - type: Documentation
    url: https://macrostrat.org/api/v2
  - type: Website
    url: https://macrostrat.org
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Macrostrat API — frequently asked questions

Does Macrostrat have an API?

Yes. APIs.io lists 14 APIs from Macrostrat, including Macrostrat Age Model API, Macrostrat Cartography API and Macrostrat Columns API, and 11 more.

Is there an OpenAPI specification for the Macrostrat API?

Yes. APIs.io indexes 14 OpenAPI specifications for Macrostrat, each linked for download from this page.

How much does the Macrostrat API cost?

APIs.io lists 3 pricing plans for Macrostrat, with each plan's price, limits and inclusions under Pricing on this page.

Is the Macrostrat API ready for AI agents?

Macrostrat has a Kin Score of 21.6 out of 100 (emerging) and an Agent Readiness score of 19.8 (agent-aware), scored by API Evangelist on 2026-11-13.

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