Geometry

Geometry provides deterministic date JSON for AI builders and RAG applications. The service returns consistent calendar data, moon phases, seasons, and retrograde information for any date between 1900 and 2100. It offers a free tier with usage limits and paid plans for higher volume. The platform is built by Goqo Labs LLC and includes an MCP (Machine-Readable JSON) endpoint for easy integration with Claude, ChatGPT, Gemini, and other AI models.

Geometry is listed with 2 APIs on the APIs.io network. Tagged areas include Artificial Intelligence, Date, JSON, RAG, and Calendar.

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

Geometry’s developer surface includes authentication, pricing, getting-started guide, documentation, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.3/100 thin Agent 21/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

2 APIs

Artificial Intelligence Date JSON RAG Calendar

Kin Score

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

Composite quality — 27.3/100 · thin

Contract Quality 2.4 / 21

Developer Ergonomics 5.7 / 17

Access Clarity 7.2 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.3 / 9

Regulatory Posture 2.6 / 15

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 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 8 / 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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<a href="https://apis.io/providers/geometry-app/"><img src="https://apis.io/badge/geometry-app/card.svg" alt="Geometry on APIs.io — Kin Score by API Evangelist"></a>

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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 →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) 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 →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 11.4 — up to +22.2 composite points Ask about this →
Developer Ergonomics scores 33.3 — up to +13.3 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 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/geometry-app/apis.yml: open an issue on github.com/api-evangelist/geometry-app 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.

Agent2Agent

measured — observed by APIs.io (conformant)

APIs 2

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

Geometry MCP

Machine-Readable JSON endpoint providing deterministic date data.

Geometry API

Geometry API as documented publicly: 1 operations. Contract generated from the documentation by API Evangelist (2026-11-09); not the provider's own document.

Geometry API pricing

Prices published by Geometry, read 2026-11-09 from geometry.app/pricing/.

Plan	Price
Free	$0
Starter	$28/mo

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Geometry Plans Pricing

2 plans

PLANS

Spectral Rules 1

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

Geometry API Rules

28 rules · 26 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 2

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

Geometry Authentication

2 schemes

SECURITY

Geometry Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

Conventions

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: geometry-app
name: Geometry
description: Geometry provides deterministic date JSON for AI builders and RAG applications. The service returns consistent
  calendar data, moon phases, seasons, and retrograde information for any date between 1900 and 2100. It offers a free tier
  with usage limits and paid plans for higher volume. The platform is built by Goqo Labs LLC and includes an MCP (Machine-Readable
  JSON) endpoint for easy integration with Claude, ChatGPT, Gemini, and other AI models.
url: https://artifacts.apis.io/geometry-app/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-09 (modular-v1; was harvest)
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  probe_state: unreadable
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-09'
modified: '2026-11-09'
tags:
- Artificial Intelligence
- Date
- JSON
- RAG
- Calendar
tags_raw:
- AI
- Date
- JSON
- Deterministic
- RAG
- Calendar
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/geometry-app-plans-pricing.yml
- type: Spectral
  url: rules/geometry-app-rules.yml
- type: Vocabulary
  url: vocabulary/geometry-app-vocabulary.yml
- type: Conventions
  url: conventions/geometry-app-conventions.yml
- type: Authentication
  url: authentication/geometry-app-authentication.yml
- type: Conformance
  url: conformance/geometry-app-conformance.yml
- type: LLMsTxt
  url: llms/geometry-app-llms.txt
- type: AgentCard
  url: a2a/geometry-app-a2a.yml
- type: Hosts
  url: hosts/geometry-app-hosts.yml
- type: Vendors
  url: vendors/geometry-app-vendors.yml
- type: TermsOfService
  url: https://geometry.app/terms/
- type: PrivacyPolicy
  url: https://geometry.app/privacy/
- type: Pricing
  url: https://geometry.app/pricing/
- type: GettingStarted
  url: https://docs.geometry.app/quickstart
- type: Documentation
  url: https://docs.geometry.app/
- type: DomainSecurity
  url: security/geometry-app-domain-security.yml
- type: Website
  url: https://geometry.app/
apis:
- name: Geometry MCP
  description: Machine-Readable JSON endpoint providing deterministic date data.
  humanURL: https://docs.geometry.app/quickstart.md
  baseURL: https://mcp.geometry.app/mcp
  aid: geometry-app:geometry-mcp
- aid: geometry-app:geometry-app-api
  name: Geometry API
  description: 'Geometry API as documented publicly: 1 operations. Contract generated from the documentation by API Evangelist
    (2026-11-09); not

    the provider''s own document.'
  humanURL: https://docs.geometry.app/http-api
  baseURL: https://api.geometry.app
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/geometry-app-openapi-generated.yml
    x-provenance: generated
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Provider documentation is markdown without a published OpenAPI, AsyncAPI, GraphQL, gRPC, or WSDL contract.
  evidence:
  - url: https://docs.geometry.app/quickstart.md
    status: 200
  checked: '2026-11-09'
x-enrichment:
  date: '2026-11-09'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Geometry API — frequently asked questions

Does Geometry have an API?

Yes. APIs.io lists 2 APIs from Geometry, including Geometry MCP and Geometry API.

Is there an OpenAPI specification for the Geometry API?

Yes. APIs.io indexes 1 OpenAPI specification for Geometry, each linked for download from this page.

How do I authenticate with the Geometry API?

Geometry uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Geometry Authentication.

How much does the Geometry API cost?

Geometry publishes its prices; its Free plan is $0 as of 2026-11-09. APIs.io lists 2 pricing plans for Geometry, with each plan's price, limits and inclusions under Pricing on this page.

Is the Geometry API ready for AI agents?

Geometry has a Kin Score of 27.3 out of 100 (thin) and an Agent Readiness score of 21.2 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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