freeastroapi-com

FreeAstroAPI provides a high-performance, developer-friendly Astrology API that enables precise calculations of natal charts, transits, and synastry. Built for developers, it offers fast, accurate astrological data through a modern RESTful interface, supporting integration into apps, websites, and services that require detailed astrological insights.

freeastroapi-com is listed with 1 API on the APIs.io network. Tagged areas include Company, Astrology, API, Developer, and Data.

freeastroapi-com’s developer surface includes authentication, changelog, documentation, pricing, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

35.9/100 thin Agent 28/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

Company AstrologyAPIDeveloperData

Kin Score

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

Composite quality — 35.9/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 5.5 / 17

Access Clarity 12.4 / 17

Operational Transparency 4.1 / 11

Contract Governance 1.7 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link

6 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
Developer Ergonomics scores 32.6 — up to +13.5 composite points
Contract Governance scores 16.4 — up to +10.0 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/freeastroapi-com/apis.yml: open an issue on github.com/api-evangelist/freeastroapi-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 1

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

AstroService API

AstroService API provides endpoints for natal chart calculations and related astrological data.

Pricing Plans 1

Published pricing tiers and plan structures.

Freeastroapi Com Plans Pricing

3 plans

PLANS

Security Posture 2

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

Freeastroapi Com Authentication

1 scheme

SECURITY

Freeastroapi Com Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

Guides

Guides

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Idempotency

Idempotency

Conventions

Conventions

Conformance

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

Postman

Postman

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

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: freeastroapi-com
name: freeastroapi-com
image: https://www.freeastroapi.com/og-image.jpg
description: FreeAstroAPI provides a high-performance, developer-friendly Astrology API that enables precise calculations
  of natal charts, transits, and synastry. Built for developers, it offers fast, accurate astrological data through a modern
  RESTful interface, supporting integration into apps, websites, and services that require detailed astrological insights.
url: https://artifacts.apis.io/freeastroapi-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- Astrology
- API
- Developer
- Data
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/freeastroapi-com-plans-pricing.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Idempotency
  url: conventions/freeastroapi-com-conventions.yml
- type: Conventions
  url: conventions/freeastroapi-com-conventions.yml
- type: Authentication
  url: authentication/freeastroapi-com-authentication.yml
- type: Conformance
  url: conformance/freeastroapi-com-conformance.yml
- type: LLMsTxt
  url: llms/freeastroapi-com-llms.txt
- type: WellKnown
  url: well-known/freeastroapi-com-well-known.yml
- type: Hosts
  url: hosts/freeastroapi-com-hosts.yml
- type: Vendors
  url: vendors/freeastroapi-com-vendors.yml
- type: Postman
  url: https://god.gw.postman.com/run-collection/52137099-77d2f593-7220-44f0-9997-3d9edb5fa101?action=collection%2Ffork&source=rip_markdown&collection-url=entityId%3D52137099-77d2f593-7220-44f0-9997-3d9edb5fa101%26entityType%3Dcollection%26workspaceId%3D002a7d58-21a4-45fc-8cec-1dc5a0affae5&env%5BAstro%20API%20-%20Production%5D=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
- type: Login
  url: https://www.freeastroapi.com/login
- type: GitHubOrganization
  url: https://github.com/FreeAstroApi
- type: ChangeLog
  url: https://www.freeastroapi.com/changelog
- type: DomainSecurity
  url: security/freeastroapi-com-domain-security.yml
- type: Website
  url: https://freeastroapi.com/
- type: Documentation
  url: https://www.freeastroapi.com/docs
- type: Guides
  url: https://www.freeastroapi.com/guide
- type: Pricing
  url: https://www.freeastroapi.com/pricing
- type: StatusPage
  url: https://stats.uptimerobot.com/0E0KFhq8CR
- type: TermsOfService
  url: https://www.freeastroapi.com/terms
- type: PrivacyPolicy
  url: https://www.freeastroapi.com/privacy
apis:
- name: AstroService API
  description: AstroService API provides endpoints for natal chart calculations and related astrological data.
  humanURL: https://www.freeastroapi.com/docs
  baseURL: https://api.freeastroapi.com
  aid: freeastroapi-com:astroservice-api
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-30'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://api.uptimerobot.com/openapi.yaml
    status: null
  - url: https://api.freeastroapi.com/openapi.json
    status: null
  - url: https://api.freeastroapi.com/mcp
    status: 401
  - url: https://freeastroapi.com/
    status: 200
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 17
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

freeastroapi-com — frequently asked questions

Does freeastroapi-com have an API?

Yes. APIs.io lists 1 API from freeastroapi-com, including AstroService API.

How do I authenticate with the freeastroapi-com?

freeastroapi-com documents its authentication (1 scheme). The details are profiled on APIs.io as Freeastroapi Com Authentication.

How much does the freeastroapi-com cost?

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

Is the freeastroapi-com ready for AI agents?

freeastroapi-com has a Kin Score of 35.9 out of 100 (thin) and an Agent Readiness score of 28.3 (agent-aware), scored by API Evangelist on 2026-10-31.

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