Skymerse

Skymerse is a Y Combinator-backed aviation company building one AI system for airline flight operations — from planning and monitoring in the operations center to real-time support in the cockpit. Its first product, Notamify, interprets NOTAMs (Notices to Airmen) with specialized aeronautical models and ships the Notamify API V2: a REST API over global NOTAM data with AI-enhanced interpretation, active/nearby/raw/archive NOTAM endpoints, AI NOTAM prioritisation, synchronous and asynchronous flight briefings, and a Watcher API that pushes matching interpreted NOTAMs to signed webhooks. Notamify already serves airline customers and thousands of pilots and aviation professionals, with an official Python SDK and an MCP server for agents.

Skymerse publishes 1 API on the APIs.io network: Notams API. Tagged areas include Company, Aviation, NOTAM, Flight Operations, and Aeronautical.

The Skymerse catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Skymerse’s developer surface includes authentication, changelog, sandbox, documentation, API reference, getting-started guide, engineering blog, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub

49.0/100 developing ▬ flat Agent 35/100 agent ready saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0

1 APIs 1 MCP Servers

Company Aviation NOTAMFlight OperationsAeronauticalWeather Artificial Intelligence Webhook

Kin Score

Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0

Composite quality — 49.0/100 · developing

Contract Quality 13.3 / 25

Developer Ergonomics 14.6 / 20

Access Clarity 6.8 / 20

Operational Transparency 6.2 / 13

Contract Governance 0.5 / 12

Discoverability 7.6 / 10

Agent readiness — 35/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 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 7 / 7

Typed Event Surface 6 / 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

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 github.com/api-evangelist/skymerse: open an issue to ask a question, or submit a pull request to add artifacts. 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.

MCP Servers 1

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

Skymerse MCP Server

MCP SERVER

Rate Limits 1

Documented rate limits and quota policies.

Get Started 4

Portal, sign-up, and the first successful call

Sandbox

DeveloperPortal

GettingStarted

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

Webhooks

DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

RateLimits

RateLimits

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 1

The organization behind the API

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: skymerse
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/skymerse.png
name: Skymerse
description: 'Skymerse is a Y Combinator-backed aviation company building one AI system for airline flight operations — from
  planning and monitoring in the operations center to real-time support in the cockpit. Its first product, Notamify, interprets
  NOTAMs (Notices to Airmen) with specialized aeronautical models and ships the Notamify API V2: a REST API over global NOTAM
  data with AI-enhanced interpretation, active/nearby/raw/archive NOTAM endpoints, AI NOTAM prioritisation, synchronous and
  asynchronous flight briefings, and a Watcher API that pushes matching interpreted NOTAMs to signed webhooks. Notamify already
  serves airline customers and thousands of pilots and aviation professionals, with an official Python SDK and an MCP server
  for agents.'
url: https://raw.githubusercontent.com/api-evangelist/skymerse/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: profiled
x-tier-reason: enriched-from-stub
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Aviation
- NOTAM
- Flight Operations
- Aeronautical
- Weather
- Artificial Intelligence
- Webhook
tags_raw:
- Company
- Aviation
- NOTAM
- Flight Operations
- Aeronautical
- Weather
- AI
- Webhooks
apis:
- aid: skymerse:skymerse-notams-api
  name: Skymerse Notams API
  description: The Notams API from Skymerse — 9 operation(s) for notams.
  humanURL: https://skymerse.gitbook.io/notamify-api
  baseURL: https://api.notamify.com/api/v2
  tags:
  - NOTAMs
  tags_raw:
  - Notams
  properties:
  - type: OpenAPI
    url: openapi/skymerse-notams-api-openapi.yml
  - type: Webhooks
    url: asyncapi/skymerse-watcher-webhooks.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/skymerse-domain-security.yml
- type: Authentication
  url: authentication/skymerse-authentication.yml
- type: Packages
  url: packages/skymerse-packages.yml
- type: SDKs
  url: packages/skymerse-packages.yml
- type: MCPServer
  url: mcp/skymerse-mcp.yml
- type: LLMsTxt
  url: llms/skymerse-llms.txt
- type: WellKnown
  url: well-known/skymerse-well-known.yml
- type: Conventions
  url: conventions/skymerse-conventions.yml
- type: ErrorCatalog
  url: errors/skymerse-problem-types.yml
- type: Lifecycle
  url: lifecycle/skymerse-lifecycle.yml
- type: ChangeLog
  url: changelog/skymerse-changelog.yml
- type: RateLimits
  url: rate-limits/skymerse-rate-limits.yml
- type: Conformance
  url: conformance/skymerse-conformance.yml
- type: Webhooks
  url: asyncapi/skymerse-watcher-webhooks.yml
- type: Sandbox
  url: sandbox/skymerse-sandbox.yml
- type: DataModel
  url: data-model/skymerse-data-model.yml
- type: Overlay
  url: overlays/skymerse-notamify-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
- type: DeveloperPortal
  url: https://skymerse.gitbook.io/notamify-api
- type: Documentation
  url: https://skymerse.gitbook.io/notamify-api
- type: APIReference
  url: https://skymerse.gitbook.io/notamify-api/active-notams-endpoint
- type: GettingStarted
  url: https://skymerse.gitbook.io/notamify-api/basics/quick-start
- type: Blog
  url: https://notamify.com/blog
- type: GitHubOrganization
  url: https://github.com/skymerse
- type: PrivacyPolicy
  url: https://www.skymerse.com/privacy
- type: Pricing
  url: https://skymerse.gitbook.io/notamify-api/basics/notamify-api-credits-and-costs
- type: SignUp
  url: https://notamify.com/api-manager
- type: Support
  url: https://www.skymerse.com/contact
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 21
  pass: local-v1

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Skymerse

Kin Score

APIs 1

Skymerse Notams API

Open Collections 2

API Collection

Notamify API V2 Notams API