openephemeris-com

Open Ephemeris provides a high‑precision ephemeris API for developers and AI agents, delivering sub‑arcsecond planetary positions, aspects, and full chart structures from NASA JPL DE440 data covering 1550‑2650 CE. The service powers astrology, human design, astro‑cartography, and compatibility engines with clean REST endpoints and MCP integration for ChatGPT and Claude, offering free trial credits and detailed documentation.

openephemeris-com publishes 20 API contracts indexed on the APIs.io network, including ACG API, Agricultural API, API Metadata API, and 17 more. Tagged areas include Company, Astrology, AI, Astronomy, and Data.

The openephemeris-com catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

openephemeris-com’s developer surface includes support, changelog, getting-started guide, API reference, authentication, documentation, pricing, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

59.7/100 strong Agent 38/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract

Company AstrologyAIAstronomy DataAPI

Kin Score

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

Composite quality — 59.7/100 · strong

Contract Quality 13.0 / 21

Developer Ergonomics 8.1 / 17

Access Clarity 10.8 / 17

Operational Transparency 3.5 / 11

Contract Governance 8.1 / 10

Discoverability 5.6 / 9

Regulatory Posture 4.2 / 15

Agent readiness — 38/100 · agent ready

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 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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

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)
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

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 47.6 — up to +10.5 composite points
Contract Quality scores 61.1 — up to +9.7 composite points
Operational Transparency scores 31.6 — up to +8.9 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/openephemeris-com/apis.yml: open an issue on github.com/api-evangelist/openephemeris-com 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 20

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

openephemeris-com ACG API

Map the cosmos to the earth. Astrocartography (ACG), cyclocartography (CCG), and Local Space endpoints. Returns GeoJSON feature collections—perfect for drawing maps in your app....

openephemeris-com Agricultural API

Work with the earth's rhythms. Biodynamic planting profiles and multi-day agricultural calendars. **1 unit per request.**

openephemeris-com API Metadata API

Discover the API schema and current contract hash. **Free — not metered.**

openephemeris-com Calendar API

Mark the turning of the wheel. Cross-quarter days, exact moon phases, and lunar standstills. **10 units per request.**

openephemeris-com Catalogs API

Explore our extensive reference catalogs. See all supported planets, asteroids, fixed stars, and star groups available for calculation. **Free — not metered.**

openephemeris-com Chinese API

Eastern insights. BaZi (Four Pillars) charts, element balance, luck pillars, ten gods analysis, compatibility, solar terms, and the Chinese zodiac. **1 unit per request** (eleme...

openephemeris-com Comparative API

Explore relationships and overlays. Cast synastry, composite, and transit-to-natal charts effortlessly. **3 units per request** (flat rate; does not scale by subject count).

openephemeris-com Eclipse API

Find the shadows. Calculate solar and lunar eclipses, global circumstances, next-visible searches, and Saros series data (solar eclipses only — lunar eclipse responses do not po...

openephemeris-com Electional API

Find the best moment for a specific activity. Score a moment's viability, search a date range for top-ranked windows, track planetary stations, and search active aspects. **5 un...

openephemeris-com Ephemeris API

Discover the foundation of any chart. Get natal positions, houses, lots, core aspects, and fixed stars. Calculated with NASA-grade precision (JPL DE440, 1550–2650 CE). **1 unit ...

openephemeris-com Health API

System health and readiness checks. **Free — not metered.**

openephemeris-com Human Design API

Map the energetic blueprint. Bodygraphs, composite charts, transit fields, and pentas. **2 units per request** (transit-chart and composite are 3).

openephemeris-com Location Timezone API

Geocoding and timezone resolution to help you locate your charts accurately. **1 unit per request.**

openephemeris-com Lunar API

Track the Moon's journey. Phases, aspects, void-of-course windows, and exact lunar ingresses. **1 unit per request.**

openephemeris-com Predictive API

Look ahead (or behind). Find exact times for transits, cast solar & lunar returns, calculate progressions, and run traditional time-lord techniques (primary directions, firdaria...

openephemeris-com Tidal API

Calculate tidal forces and lunar coastal influences. **1 unit per request.**

openephemeris-com Time Conversion API

Convert between time formats. Julian Day numbers, sidereal time, sunrise/sunset. **1 unit per request.**

openephemeris-com Vedic API

Vedic (Jyotish) calculations including Ayanamsha and the Navamsa (D-9) divisional chart. **1 unit per request.**

openephemeris-com Venus Cycles API

Explore the elegant dance of Venus. Synodic cycle analysis and Star Points. **1 unit per request.**

openephemeris-com Visualization API

Render chart imagery. Generate natal chart wheels, comparative bi-wheels, and Human Design bodygraphs as SVG or PNG. Free on every tier, including Explorer. **2 units per reques...

Scroll for all 20

Pricing Plans 1

Published pricing tiers and plan structures.

Openephemeris Com Plans Pricing

2 plans

PLANS

Semantic Vocabularies 1

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

Openephemeris Com Context

120 classes · 467 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

openephemeris-com API Rules

15 rules · 11 errors 3 warnings 1 info

SPECTRAL

JSON Schema 6

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

ACGCCGRequestPayload

17 properties

JSON SCHEMA

ACGLocalSpaceRequestPayload

14 properties

JSON SCHEMA

ACGRequestPayload

13 properties

JSON SCHEMA

NatalChartEnhancedResponse

29 properties

JSON SCHEMA

VedicChartRequest

15 properties

JSON SCHEMA

ZodiacalReleasingResponse

11 properties

JSON SCHEMA

Security Posture 3

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

Openephemeris Com Authentication

apiKey/http · 4 schemes

SECURITY

Openephemeris Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Openephemeris Com Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Openephemeris Com Agentic Access

142 operations · 86 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

Authentication

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: openephemeris-com
name: openephemeris-com
image: https://openephemeris.com/assets/brand/og-image.jpg
description: Open Ephemeris provides a high‑precision ephemeris API for developers and AI agents, delivering sub‑arcsecond
  planetary positions, aspects, and full chart structures from NASA JPL DE440 data covering 1550‑2650 CE. The service powers
  astrology, human design, astro‑cartography, and compatibility engines with clean REST endpoints and MCP integration for
  ChatGPT and Claude, offering free trial credits and detailed documentation.
url: https://artifacts.apis.io/openephemeris-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- Astrology
- AI
- Astronomy
- Data
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/openephemeris-com-agentic-access.yml
- type: Plans
  url: plans/openephemeris-com-plans-pricing.yml
- type: Spectral
  url: rules/openephemeris-com-rules.yml
- type: JSONLD
  url: json-ld/openephemeris-com-context.jsonld
- type: Vocabulary
  url: vocabulary/openephemeris-com-vocabulary.yml
- type: DataModel
  url: data-model/openephemeris-com-data-model.yml
- type: Security
  url: security/openephemeris-com-vulnerability-disclosure.yml
- type: ErrorCatalog
  url: errors/openephemeris-com-problem-types.yml
- type: Conformance
  url: conformance/openephemeris-com-conformance.yml
- type: LLMsTxt
  url: llms/openephemeris-com-llms.txt
- type: SecurityTxt
  url: well-known/openephemeris-com-security.txt
- type: WellKnown
  url: well-known/openephemeris-com-well-known.yml
- type: Hosts
  url: hosts/openephemeris-com-hosts.yml
- type: Vendors
  url: vendors/openephemeris-com-vendors.yml
- type: Support
  url: https://openephemeris.com/support
- type: Login
  url: https://openephemeris.com/login
- type: GitHubOrganization
  url: https://github.com/openephemeris
- type: ChangeLog
  url: https://openephemeris.com/changelog
- type: GettingStarted
  url: https://openephemeris.com/quickstart
- type: APIReference
  url: https://openephemeris.com/llms.txt
- type: Authentication
  url: authentication/openephemeris-com-authentication.yml
- type: VulnerabilityDisclosure
  url: security/openephemeris-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/openephemeris-com-domain-security.yml
- type: Website
  url: https://openephemeris.com/
- type: Documentation
  url: https://openephemeris.com/docs
- type: Pricing
  url: https://openephemeris.com/pricing
- type: Blog
  url: https://openephemeris.com/blog
- type: TermsOfService
  url: https://openephemeris.com/terms
- type: PrivacyPolicy
  url: https://openephemeris.com/privacy
apis:
- aid: openephemeris-com:openephemeris-com-acg-api
  name: openephemeris-com ACG API
  description: Map the cosmos to the earth. Astrocartography (ACG), cyclocartography (CCG), and Local Space endpoints. Returns
    GeoJSON feature collections—perfect for drawing maps in your app. **10 units per request** (20 for relational-parans,
    15 for heatmap endpoints; datasets/meta discovery is free).
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - ACG
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-acg-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-agricultural-api
  name: openephemeris-com Agricultural API
  description: Work with the earth's rhythms. Biodynamic planting profiles and multi-day agricultural calendars. **1 unit
    per request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - agricultural
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-agricultural-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-api-metadata-api
  name: openephemeris-com API Metadata API
  description: Discover the API schema and current contract hash. **Free — not metered.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - api-metadata
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-api-metadata-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-calendar-api
  name: openephemeris-com Calendar API
  description: Mark the turning of the wheel. Cross-quarter days, exact moon phases, and lunar standstills. **10 units per
    request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - calendar
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-calendar-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-catalogs-api
  name: openephemeris-com Catalogs API
  description: Explore our extensive reference catalogs. See all supported planets, asteroids, fixed stars, and star groups
    available for calculation. **Free — not metered.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - catalogs
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-catalogs-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-chinese-api
  name: openephemeris-com Chinese API
  description: Eastern insights. BaZi (Four Pillars) charts, element balance, luck pillars, ten gods analysis, compatibility,
    solar terms, and the Chinese zodiac. **1 unit per request** (element-balance, luck-pillars, ten-gods, annual-pillar, compatibility,
    and solar-terms are 3).
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - chinese
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-chinese-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-comparative-api
  name: openephemeris-com Comparative API
  description: Explore relationships and overlays. Cast synastry, composite, and transit-to-natal charts effortlessly. **3
    units per request** (flat rate; does not scale by subject count).
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - comparative
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-comparative-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-eclipse-api
  name: openephemeris-com Eclipse API
  description: Find the shadows. Calculate solar and lunar eclipses, global circumstances, next-visible searches, and Saros
    series data (solar eclipses only — lunar eclipse responses do not populate Saros fields). **1 unit per request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - eclipse
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-eclipse-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-electional-api
  name: openephemeris-com Electional API
  description: Find the best moment for a specific activity. Score a moment's viability, search a date range for top-ranked
    windows, track planetary stations, and search active aspects. **5 units per request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - electional
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-electional-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-ephemeris-api
  name: openephemeris-com Ephemeris API
  description: Discover the foundation of any chart. Get natal positions, houses, lots, core aspects, and fixed stars. Calculated
    with NASA-grade precision (JPL DE440, 1550–2650 CE). **1 unit per request** (the prenatal-lunation search is 5 units).
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - ephemeris
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-ephemeris-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-health-api
  name: openephemeris-com Health API
  description: System health and readiness checks. **Free — not metered.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - health
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-health-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-human-design-api
  name: openephemeris-com Human Design API
  description: Map the energetic blueprint. Bodygraphs, composite charts, transit fields, and pentas. **2 units per request**
    (transit-chart and composite are 3).
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - Human Design
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-human-design-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-location-timezone-api
  name: openephemeris-com Location Timezone API
  description: Geocoding and timezone resolution to help you locate your charts accurately. **1 unit per request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - location-timezone
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-location-timezone-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-lunar-api
  name: openephemeris-com Lunar API
  description: Track the Moon's journey. Phases, aspects, void-of-course windows, and exact lunar ingresses. **1 unit per
    request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - lunar
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-lunar-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-predictive-api
  name: openephemeris-com Predictive API
  description: Look ahead (or behind). Find exact times for transits, cast solar & lunar returns, calculate progressions,
    and run traditional time-lord techniques (primary directions, firdaria, annual profections, zodiacal releasing). **5 units
    per request** (progressed-chart and transit-chart snapshot calls are 1 unit).
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - predictive
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-predictive-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-tidal-api
  name: openephemeris-com Tidal API
  description: Calculate tidal forces and lunar coastal influences. **1 unit per request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - tidal
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-tidal-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-time-conversion-api
  name: openephemeris-com Time Conversion API
  description: Convert between time formats. Julian Day numbers, sidereal time, sunrise/sunset. **1 unit per request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - Time Conversion
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-time-conversion-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-vedic-api
  name: openephemeris-com Vedic API
  description: Vedic (Jyotish) calculations including Ayanamsha and the Navamsa (D-9) divisional chart. **1 unit per request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - vedic
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-vedic-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-venus-cycles-api
  name: openephemeris-com Venus Cycles API
  description: Explore the elegant dance of Venus. Synodic cycle analysis and Star Points. **1 unit per request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - venus-cycles
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-venus-cycles-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
- aid: openephemeris-com:openephemeris-com-visualization-api
  name: openephemeris-com Visualization API
  description: Render chart imagery. Generate natal chart wheels, comparative bi-wheels, and Human Design bodygraphs as SVG
    or PNG. Free on every tier, including Explorer. **2 units per request.**
  humanURL: https://openephemeris.com/docs
  baseURL: https://api.openephemeris.com
  tags:
  - visualization
  properties:
  - type: OpenAPI
    url: openapi/openephemeris-com-visualization-api-openapi.yml
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgccgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acgrequest-payload-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-natal-chart-enhanced-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-vedic-chart-request-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-zodiacal-releasing-response-schema.json
  - type: JSONSchema
    url: json-schema/openephemeris-com-acglocal-space-request-payload-schema.json
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 23
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

openephemeris-com API — frequently asked questions

Does openephemeris-com have an API?

Yes. APIs.io lists 20 APIs from openephemeris-com, including openephemeris-com ACG API, openephemeris-com Agricultural API and openephemeris-com API Metadata API, and 17 more.

Is there an OpenAPI specification for the openephemeris-com API?

Yes. APIs.io indexes 20 OpenAPI specifications for openephemeris-com, each linked for download from this page.

How do I authenticate with the openephemeris-com API?

openephemeris-com uses bearer-token authentication (apiKey/http · 4 schemes). The details are profiled on APIs.io as Openephemeris Com Authentication.

How much does the openephemeris-com API cost?

APIs.io lists 2 pricing plans for openephemeris-com, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the openephemeris-com API ready for AI agents?

openephemeris-com has a Kin Score of 59.7 out of 100 (strong) and an Agent Readiness score of 37.5 (agent-ready), scored by API Evangelist on 2026-10-31.

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