Momentus

Momentus is a U.S.-based commercial space company providing in-space transportation and infrastructure services. Founded in 2017 and headquartered in San Jose, California, the publicly traded company (NASDAQ: MNTS) designs, manufactures, and operates Orbital Service Vehicles such as its Vigoride platform, using water plasma propulsion technology to move satellites and payloads between orbits, host payloads, and deliver last-mile satellite deployment. Momentus serves private satellite operators, government agencies, and research institutions. As of this profile it publishes no public developer API, developer portal, SDK, or technical integration surface; it was surfaced as a Y Combinator (S18) portfolio company and added to the API Evangelist network as a company profile.

Momentus is profiled on the APIs.io network. Tagged areas include Company, Space, Aerospace, Space Transportation, and Satellite.

Momentus’ developer surface includes engineering blog and 1 more developer resources.

🌐 Visit website 📡 Source on GitHub

5.5/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Space AerospaceSpace TransportationSatelliteIn-Space InfrastructureSpace LogisticsY Combinator

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 5.5/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.5 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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

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.

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/momentus: 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 →

Resources

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: momentus
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/momentus.png
name: Momentus
description: 'Momentus is a U.S.-based commercial space company providing in-space transportation and infrastructure services.
  Founded in 2017 and headquartered in San Jose, California, the publicly traded company (NASDAQ: MNTS) designs, manufactures,
  and operates Orbital Service Vehicles such as its Vigoride platform, using water plasma propulsion technology to move satellites
  and payloads between orbits, host payloads, and deliver last-mile satellite deployment. Momentus serves private satellite
  operators, government agencies, and research institutions. As of this profile it publishes no public developer API, developer
  portal, SDK, or technical integration surface; it was surfaced as a Y Combinator (S18) portfolio company and added to the
  API Evangelist network as a company profile.'
url: https://raw.githubusercontent.com/api-evangelist/momentus/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: '2026-07-20'
tags:
- Company
- Space
- Aerospace
- Space Transportation
- Satellite
- In-Space Infrastructure
- Space Logistics
- Y Combinator
apis: []
common:
- type: Website
  url: https://momentus.space
- type: Blog
  url: https://momentus.space/updates/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 0
  pass: local-v1

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