Clockwork Labs

aid: clockwork-labs
name: Clockwork Labs
description: 'Clockwork Labs is a San Francisco software company (founded 2019) that builds SpacetimeDB, a relational database
  that is also an application server: developers upload their schema and server-side business logic as a WebAssembly "module"
  (written in Rust, C#, TypeScript, or C++) directly into the database, and clients connect over WebSocket to invoke reducers
  and subscribe to real-time state updates with no separate application server in between. SpacetimeDB exposes a versioned
  HTTP API (/v1/database and /v1/identity) for publishing modules, invoking reducers, running SQL, streaming subscriptions,
  and managing identities and JWT tokens, plus a first-party `spacetime` CLI and client SDKs for TypeScript, C#/Unity, Rust,
  Python, and C++. It is the production backend of BitCraft, the company''s MMO. Clockwork Labs is backed by a16z, Supercell,
  Firstminute Capital, Skycatcher, 1Up Ventures, and Supernode.'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - 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
  - security
  generated: '2026-09-03'
  method: derived
image: https://spacetimedb.com/og-home.png
url: https://raw.githubusercontent.com/api-evangelist/clockwork-labs/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Database
- Real-Time
- WebSocket
- Game Backend
- Multiplayer
- Serverless
- WebAssembly
- Developer Tools
- Infrastructure
apis:
- name: SpacetimeDB HTTP API
  description: 'The SpacetimeDB HTTP API lets clients and tools interact with SpacetimeDB databases: publish and delete database
    modules, manage database names, retrieve schema and logs, invoke reducers, run SQL queries, open real-time subscription
    WebSockets, and create/verify Spacetime identities and JWT tokens. Authentication is a Bearer JWT (SpacetimeAuth/OIDC,
    or an anonymously generated identity token). Base host is the hosted SpacetimeDB Cloud (Maincloud); the same API is served
    by any self-hosted `spacetime start` instance.'
  humanURL: https://spacetimedb.com/docs/http/database/
  baseURL: https://maincloud.spacetimedb.com
  tags:
  - Database
  - Real-Time
  - WebSocket
  - Identity
  properties:
  - type: Documentation
    url: https://spacetimedb.com/docs/http/database/
  - type: APIReference
    url: https://spacetimedb.com/docs/http/database/
  - type: Authentication
    url: authentication/clockwork-labs-authentication.yml
  - type: ErrorCatalog
    url: errors/clockwork-labs-problem-types.yml
  - type: Conventions
    url: conventions/clockwork-labs-conventions.yml
  - type: Conformance
    url: conformance/clockwork-labs-conformance.yml
  - type: X-MCPServerCandidate
    url: mcp/clockwork-labs-mcp.yml
    note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list
      derived from the published API contracts, not an existing server. The scorer already read the manifest and reported
      mcp_server correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
common:
- type: Website
  url: https://spacetimedb.com/
- type: DeveloperPortal
  url: https://spacetimedb.com/docs
- type: Documentation
  url: https://spacetimedb.com/docs
- type: APIReference
  url: https://spacetimedb.com/docs/http/database/
- type: GettingStarted
  url: https://spacetimedb.com/docs/
- type: GitHubOrganization
  url: https://github.com/clockworklabs
- type: Blog
  url: https://spacetimedb.com/blog
- type: Support
  url: https://discord.gg/spacetimedb
- type: StatusPage
  url: https://status.spacetimedb.com
- type: Pricing
  url: https://spacetimedb.com/pricing
- type: SignUp
  url: https://spacetimedb.com/login
- type: Login
  url: https://spacetimedb.com/login
- type: TermsOfService
  url: https://spacetimedb.com/terms-of-service
- type: PrivacyPolicy
  url: https://spacetimedb.com/privacy
- type: LLMsTxt
  url: llms/clockwork-labs-llms.txt
- type: Packages
  url: packages/clockwork-labs-packages.yml
- type: SDKs
  url: packages/clockwork-labs-packages.yml
- type: CLI
  url: cli/clockwork-labs-cli.yml
- type: WellKnown
  url: well-known/clockwork-labs-well-known.yml
- type: Authentication
  url: authentication/clockwork-labs-authentication.yml
- type: OpenIDConnect
  url: well-known/clockwork-labs-openid-configuration.json
- type: ErrorCatalog
  url: errors/clockwork-labs-problem-types.yml
- type: Conventions
  url: conventions/clockwork-labs-conventions.yml
- type: Conformance
  url: conformance/clockwork-labs-conformance.yml
- type: Lifecycle
  url: lifecycle/clockwork-labs-lifecycle.yml
- type: ChangeLog
  url: changelog/clockwork-labs-changelog.yml
- type: X-MCPServerCandidate
  url: mcp/clockwork-labs-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AgentSkill
  url: skills/_index.yml
- type: DomainSecurity
  url: security/clockwork-labs-domain-security.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence