Constellation Space

Constellation Space Corp (ConstellationOS) is the ML-native operations platform for satellite fleets, founded in 2025 in Seattle and backed by Y Combinator. Operators connect ground telemetry through one API and one schema, run machine-learning link forecasts on live fleet context (SNR and link fade, traffic, weather, jamming, and conjunction), and act under operator policy with automated routing, stream isolation, and failover. The ConstellationOS HTTP API exposes fleet topology reads, telemetry ingestion, and predictions, secured with scoped bearer tokens, alongside a web console, a fleet agent CLI, and a public status page.

Constellation Space publishes 3 API contracts indexed on the APIs.io network: Predictions API, Telemetry API, and Topology API. Tagged areas include Company, Satellite, Space, Telemetry, and Machine Learning.

The Constellation Space catalog on APIs.io includes 1 Spectral governance ruleset.

Constellation Space’s developer surface includes documentation, API reference, getting-started guide, signup flow, pricing, support, authentication, and 24 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

48.5/100 developing ▬ flat Agent 19/100 agent aware Front door AI 3/6 light saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers 2 Agent Skills

Company Satellite Space Telemetry Machine Learning Fleet OperationsGround SegmentPredictions

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 48.5/100 · developing

Contract Quality 10.7 / 19

Developer Ergonomics 9.6 / 15

Access Clarity 4.7 / 15

Operational Transparency 2.6 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 5.2 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 19/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 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 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 31.6 — up to +13.7 composite points
Contract Quality scores 57.1 — up to +10.7 composite points
Contract Governance scores 18.2 — up to +9.8 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/constellation-space/apis.yml: open an issue on github.com/api-evangelist/constellation-space 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Space and Satellite (operators, earth observation, ground segment)	distribution	9.6 (thin)	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 3

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

Constellation Space Predictions API

Run ML link forecasts on live fleet context.

Constellation Space Telemetry API

Ingest ground telemetry metrics aligned to the fleet graph.

Constellation Space Topology API

Read the fleet graph — nodes, links, health scores, and routing state.

Open Collections 3

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

ConstellationOS Predictions API

OPEN COLLECTION

ConstellationOS Predictions Telemetry API

OPEN COLLECTION

ConstellationOS Predictions Topology API

OPEN COLLECTION

MCP Servers 1

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

Constellation Space MCP Server

Remote MCP server over HTTP; 3 tools listed. A candidate, not confirmed as published by the provider.

MCP SERVER

Agent Skills 2

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

Ingest ground telemetry

AGENT SKILL

Read fleet topology and run a link forecast

AGENT SKILL

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Constellation Space

SLA

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Constellation Space API Rules

45 rules · 43 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Constellation Space Openapi Overlay

3 actions · update · constellation-space-openapi.yml

DERIVED

Security Posture 4

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

Constellation Space Authentication

http · 1 scheme

SECURITY

Constellation Space Domain Security

TLSv1.3 · DMARC

SECURITY

Constellation Space Vulnerability Disclosure

no policy recorded

SECURITY

Constellation Space Trust Center

trust center published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Constellation Space Scopes

3 scopes

SCOPES

Agentic Access 1

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

Constellation Space Agentic Access

3 operations · 2 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

MCPServer

LLMsTxt

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Lifecycle

ErrorCatalog

DataModel

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

CLI

CLI

Packages

Packages

Access & Security 6

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

TrustCenter

TrustCenter

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 3

The organization behind the API

Website

Website

LinkedIn

X (Twitter)

X (Twitter)

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: constellation-space
name: Constellation Space
description: Constellation Space Corp (ConstellationOS) is the ML-native operations platform for satellite fleets, founded
  in 2025 in Seattle and backed by Y Combinator. Operators connect ground telemetry through one API and one schema, run machine-learning
  link forecasts on live fleet context (SNR and link fade, traffic, weather, jamming, and conjunction), and act under operator
  policy with automated routing, stream isolation, and failover. The ConstellationOS HTTP API exposes fleet topology reads,
  telemetry ingestion, and predictions, secured with scoped bearer tokens, alongside a web console, a fleet agent CLI, and
  a public status page.
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
  - scopes
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://constellation.space/og-image.png
url: https://raw.githubusercontent.com/api-evangelist/constellation-space/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-24
tags:
- Company
- Satellite
- Space
- Telemetry
- Machine Learning
- Fleet Operations
- Ground Segment
- Predictions
tags_raw:
- Company
- Satellites
- Space
- Telemetry
- Machine Learning
- Fleet Operations
- Ground Segment
- Predictions
- Machine-Learning
apis:
- aid: constellation-space:constellation-space-predictions-api
  name: Constellation Space Predictions API
  description: Run ML link forecasts on live fleet context.
  humanURL: https://docs.constellation.space
  baseURL: https://api.constellation.space
  tags:
  - Predictions
  properties:
  - type: OpenAPI
    url: openapi/constellation-space-predictions-api-openapi.yml
  - type: Documentation
    url: https://docs.constellation.space
  - type: APIReference
    url: https://docs.constellation.space/api/overview
- aid: constellation-space:constellation-space-telemetry-api
  name: Constellation Space Telemetry API
  description: Ingest ground telemetry metrics aligned to the fleet graph.
  humanURL: https://docs.constellation.space
  baseURL: https://api.constellation.space
  tags:
  - Telemetry
  properties:
  - type: OpenAPI
    url: openapi/constellation-space-telemetry-api-openapi.yml
  - type: Documentation
    url: https://docs.constellation.space
  - type: APIReference
    url: https://docs.constellation.space/api/overview
- aid: constellation-space:constellation-space-topology-api
  name: Constellation Space Topology API
  description: Read the fleet graph — nodes, links, health scores, and routing state.
  humanURL: https://docs.constellation.space
  baseURL: https://api.constellation.space
  tags:
  - Topology
  properties:
  - type: OpenAPI
    url: openapi/constellation-space-topology-api-openapi.yml
  - type: Documentation
    url: https://docs.constellation.space
  - type: APIReference
    url: https://docs.constellation.space/api/overview
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/constellation-space-openapi-overlay.yaml
- type: AgenticAccess
  url: agentic-access/constellation-space-agentic-access.yml
- type: DomainSecurity
  url: security/constellation-space-domain-security.yml
- url: https://constellation.space
  type: Website
- url: https://docs.constellation.space
  type: DeveloperPortal
- url: https://docs.constellation.space
  type: Documentation
- url: https://docs.constellation.space/api/overview
  type: APIReference
- url: https://docs.constellation.space/getting-started/quick-start
  type: GettingStarted
- url: https://console.constellation.space/app/
  type: SignUp
- url: https://console.constellation.space/app/
  type: Login
- url: https://docs.constellation.space/getting-started/plans-and-billing
  type: Pricing
- url: https://status.constellation.space/
  type: StatusPage
- url: mailto:contact@constellation.space
  type: Support
- url: https://www.linkedin.com/company/constellationspace/
  type: LinkedIn
- url: https://x.com/constspace
  type: X (Twitter)
- url: authentication/constellation-space-authentication.yml
  type: Authentication
- url: scopes/constellation-space-scopes.yml
  type: OAuthScopes
- url: conventions/constellation-space-conventions.yml
  type: Conventions
- url: lifecycle/constellation-space-lifecycle.yml
  type: Lifecycle
- url: errors/constellation-space-problem-types.yml
  type: ErrorCatalog
- url: data-model/constellation-space-data-model.yml
  type: DataModel
- url: mcp/constellation-space-mcp.yml
  type: MCPServer
- url: sandbox/constellation-space-sandbox.yml
  type: Sandbox
- url: cli/constellation-space-cli.yml
  type: CLI
- url: packages/constellation-space-packages.yml
  type: Packages
- url: llms/constellation-space-llms.txt
  type: LLMsTxt
- url: conformance/constellation-space-conformance.yml
  type: Conformance
- url: skills/_index.yml
  type: AgentSkill
- url: security/constellation-space-vulnerability-disclosure.yml
  type: VulnerabilityDisclosure
- url: https://constellation.space/security
  type: Security
- url: security/constellation-space-trust-center.yml
  type: TrustCenter
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Constellation Space API — frequently asked questions

Does Constellation Space have an API?

Yes. APIs.io lists 3 APIs from Constellation Space, including Constellation Space Predictions API, Constellation Space Telemetry API and Constellation Space Topology API.

Is there an OpenAPI specification for the Constellation Space API?

Yes. APIs.io indexes 3 OpenAPI specifications for Constellation Space, each linked for download from this page.

How do I authenticate with the Constellation Space API?

Constellation Space uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Constellation Space Authentication.

Does Constellation Space have an MCP server?

Yes. APIs.io lists 1 MCP server for Constellation Space: Remote MCP server over HTTP; 3 tools listed. A candidate, not confirmed as published by the provider.

Is the Constellation Space API ready for AI agents?

Constellation Space has a Kin Score of 48.5 out of 100 (developing) and an Agent Readiness score of 18.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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