thirdtrail-life

Third Trail provides REST APIs delivering precise astronomical and tidal data for any location on Earth. Their services include sunrise and sunset times, twilight phases, moon phases, solar irradiance, and tide heights, all corrected for elevation. The platform offers a free tier with flat monthly pricing, catering to developers building weather, navigation, photography, and marine applications. Detailed documentation, quickstart guides, and SDKs are available to help integrate the data quickly.

thirdtrail-life publishes 5 API contracts indexed on the APIs.io network, including Ephemerides API, MCP API, Solar API, and 2 more. Tagged areas include Company, Astronomy, Tides, Solar, and API.

The thirdtrail-life catalog on APIs.io includes 1 Spectral governance ruleset.

thirdtrail-life’s developer surface includes authentication, documentation, API reference, getting-started guide, support, engineering blog, pricing, and 17 more developer resources.

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60.5/100 strong Agent 32/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

Company Astronomy Tides SolarAPI

Kin Score

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

Composite quality — 60.5/100 · strong

Contract Quality 9.2 / 21

Developer Ergonomics 10.8 / 17

Access Clarity 12.4 / 17

Operational Transparency 3.1 / 11

Contract Governance 8.1 / 10

Discoverability 5.2 / 9

Regulatory Posture 5.1 / 15

Agent readiness — 32/100 · 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 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 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 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
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
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

7 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 43.5 — up to +14.1 composite points
Operational Transparency scores 28.4 — up to +9.3 composite points
Developer Ergonomics scores 63.6 — up to +7.3 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/thirdtrail-life/apis.yml: open an issue on github.com/api-evangelist/thirdtrail-life 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 5

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

thirdtrail-life Ephemerides API

Sun and moon rise, set, transit, twilight and phase.

thirdtrail-life MCP API

The mcp API from thirdtrail-life — 1 operation(s) for mcp.

thirdtrail-life Solar API

Solar position and clear-sky irradiance (NREL SPA-equivalent, Bird model).

thirdtrail-life Tides API

Astronomical tides from the FES2022 global atlas.

thirdtrail-life Utility API

Connectivity and key-verification helpers.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

thirdtrail-life MCP Server

Remote MCP server at thirdtrail.life.

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

ephemerides

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Thirdtrail Life Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Thirdtrail Life Rate Limits

6 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

thirdtrail-life API Rules

10 rules · 8 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Thirdtrail Life Authentication

1 scheme

SECURITY

Thirdtrail Life Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Thirdtrail Life Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Thirdtrail Life Agentic Access

26 operations · 8 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

MCPServer

MCPServer

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

Vocabulary

Vocabulary

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

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: thirdtrail-life
name: thirdtrail-life
description: Third Trail provides REST APIs delivering precise astronomical and tidal data for any location on Earth. Their
  services include sunrise and sunset times, twilight phases, moon phases, solar irradiance, and tide heights, all corrected
  for elevation. The platform offers a free tier with flat monthly pricing, catering to developers building weather, navigation,
  photography, and marine applications. Detailed documentation, quickstart guides, and SDKs are available to help integrate
  the data quickly.
url: https://artifacts.apis.io/thirdtrail-life/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: '2026-10-31'
modified: '2026-10-31'
tags:
- Company
- Astronomy
- Tides
- Solar
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/thirdtrail-life-agentic-access.yml
- type: RateLimits
  url: rate-limits/thirdtrail-life-rate-limits.yml
- type: Plans
  url: plans/thirdtrail-life-plans-pricing.yml
- type: Spectral
  url: rules/thirdtrail-life-rules.yml
- type: Vocabulary
  url: vocabulary/thirdtrail-life-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Authentication
  url: authentication/thirdtrail-life-authentication.yml
- type: Conformance
  url: conformance/thirdtrail-life-conformance.yml
- type: ToolCrosswalk
  url: mcp/thirdtrail-life-tool-crosswalk.yml
- type: MCPServer
  url: mcp/thirdtrail-life-mcp.yml
- type: Hosts
  url: hosts/thirdtrail-life-hosts.yml
- type: Vendors
  url: vendors/thirdtrail-life-vendors.yml
- type: DomainSecurity
  url: security/thirdtrail-life-domain-security.yml
- type: Website
  url: https://thirdtrail.life/
- type: DeveloperPortal
  url: https://thirdtrail.life/docs/
- type: Documentation
  url: https://thirdtrail.life/docs/
- type: APIReference
  url: https://thirdtrail.life/docs/
- type: GettingStarted
  url: https://thirdtrail.life/docs/
- type: Support
  url: https://thirdtrail.life/support/
- type: Blog
  url: https://thirdtrail.life/blog/
- type: Pricing
  url: https://thirdtrail.life/pricing/
- type: SignUp
  url: https://thirdtrail.life/accounts/signup/
- type: TermsOfService
  url: https://thirdtrail.life/terms/
- type: PrivacyPolicy
  url: https://thirdtrail.life/privacy/
apis:
- aid: thirdtrail-life:thirdtrail-life-ephemerides-api
  name: thirdtrail-life Ephemerides API
  description: Sun and moon rise, set, transit, twilight and phase.
  humanURL: https://thirdtrail.life/docs/
  baseURL: https://thirdtrail.life
  tags:
  - Ephemerides
  properties:
  - type: OpenAPI
    url: openapi/thirdtrail-life-ephemerides-api-openapi.yml
- aid: thirdtrail-life:thirdtrail-life-mcp-api
  name: thirdtrail-life MCP API
  description: The mcp API from thirdtrail-life — 1 operation(s) for mcp.
  humanURL: https://thirdtrail.life/docs/
  baseURL: https://thirdtrail.life
  tags:
  - mcp
  properties:
  - type: OpenAPI
    url: openapi/thirdtrail-life-mcp-api-openapi.yml
- aid: thirdtrail-life:thirdtrail-life-solar-api
  name: thirdtrail-life Solar API
  description: Solar position and clear-sky irradiance (NREL SPA-equivalent, Bird model).
  humanURL: https://thirdtrail.life/docs/
  baseURL: https://thirdtrail.life
  tags:
  - Solar
  properties:
  - type: OpenAPI
    url: openapi/thirdtrail-life-solar-api-openapi.yml
- aid: thirdtrail-life:thirdtrail-life-tides-api
  name: thirdtrail-life Tides API
  description: Astronomical tides from the FES2022 global atlas.
  humanURL: https://thirdtrail.life/docs/
  baseURL: https://thirdtrail.life
  tags:
  - Tides
  properties:
  - type: OpenAPI
    url: openapi/thirdtrail-life-tides-api-openapi.yml
- aid: thirdtrail-life:thirdtrail-life-utility-api
  name: thirdtrail-life Utility API
  description: Connectivity and key-verification helpers.
  humanURL: https://thirdtrail.life/docs/
  baseURL: https://thirdtrail.life
  tags:
  - Utility
  properties:
  - type: OpenAPI
    url: openapi/thirdtrail-life-utility-api-openapi.yml
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 28
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

thirdtrail-life API — frequently asked questions

Does thirdtrail-life have an API?

Yes. APIs.io lists 5 APIs from thirdtrail-life, including thirdtrail-life Ephemerides API, thirdtrail-life MCP API and thirdtrail-life Solar API, and 2 more.

Is there an OpenAPI specification for the thirdtrail-life API?

Yes. APIs.io indexes 5 OpenAPI specifications for thirdtrail-life, each linked for download from this page.

How do I authenticate with the thirdtrail-life API?

thirdtrail-life uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Thirdtrail Life Authentication.

How much does the thirdtrail-life API cost?

APIs.io lists 4 pricing plans for thirdtrail-life, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does thirdtrail-life have an MCP server?

Yes. APIs.io lists 1 MCP server for thirdtrail-life: Remote MCP server at thirdtrail.life.

Is the thirdtrail-life API ready for AI agents?

thirdtrail-life has a Kin Score of 60.5 out of 100 (strong) and an Agent Readiness score of 32.3 (agent-ready), scored by API Evangelist on 2026-10-31.

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