Epsilon3

aid: epsilon3
name: Epsilon3
description: Epsilon3 is a US-based operations software provider whose platform turns static procedures into live, executable,
  auditable workflows for high-reliability teams in space, defense, aerospace manufacturing, and energy. The product spans
  procedure authoring and execution (runs), work orders, parts and inventory, purchase and sale orders, tooling and maintenance,
  shipments, project schedules, issues, test and requirements management, skills, and telemetry/commanding. Its developer
  surface is a per-workspace API-key REST API at api.epsilon3.io/v1 documented across roughly twenty API families and 200-plus
  endpoints, a SocketIO and webhook realtime interface for commanding, external data, notifications and telemetry streaming,
  and a hosted read-only Model Context Protocol server at mcp.epsilon3.io fronted by OAuth 2.1 with dynamic client registration
  and fifteen published scopes. Customers include NASA, Blue Origin, Redwire, Axiom Space and AeroVironment; deployment options
  span multi-tenant cloud, UK and EU regions, on-premises, and FedRAMP High on AWS GovCloud.
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: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-09-02'
  method: derived
image: https://static1.squarespace.com/static/602ec1c9965913605a250907/t/666747f4afb0bc6004370ebf/1785952863858/Epsilon3+Logo+2130x1200.jpg?format=1500w
url: https://raw.githubusercontent.com/api-evangelist/epsilon3/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-12'
modified: '2026-08-12'
tags:
- Company
- Aerospace
- Space
- Defense
- Manufacturing
- Procedures
- Workflows
- Inventory
- Telemetry
- Test Management
- Project Management
- MCP
tags_raw:
- Company
- Operations
- Aerospace
- Space
- Defense
- Manufacturing
- Procedures
- Workflow
- Inventory
- Telemetry
- Test Management
- Project Management
- MCP
apis:
- name: Epsilon3 REST API
  description: 'REST API for the Epsilon3 operations platform, organized into roughly twenty API families: Builds (work orders,
    parts, inventory, purchase and sale orders, vendors, tooling, shipments), Chat, Commanding, Custom Fields, Dictionaries,
    Events, External Data, Files, Issues, Procedures, Project Schedule, Roles, Runs (v1 and v2), Search, Settings, Skills,
    Snippets, Swimlanes, Telemetry, Test Management, and Users. Resource-oriented URLs, JSON request and response bodies,
    standard HTTP verbs and status codes, authenticated with a per-workspace API key supplied as the username component of
    HTTP Basic auth.'
  humanURL: https://docs.epsilon3.io/
  baseURL: https://api.epsilon3.io/v1
  tags:
  - Procedures
  - Inventory
  - Work Orders
  - Test Management
  tags_raw:
  - Operations
  - Procedures
  - Inventory
  - Work Orders
  - Test Management
  properties:
  - type: Documentation
    url: https://docs.epsilon3.io/
  - type: APIReference
    url: https://docs.epsilon3.io/#introduction
  - type: GettingStarted
    url: https://support.epsilon3.io/en/articles/8779712-generate-api-key
  - type: Authentication
    url: authentication/epsilon3-authentication.yml
  - type: RateLimits
    url: rate-limits/epsilon3-rate-limits.yml
  - type: Conventions
    url: conventions/epsilon3-conventions.yml
  - type: ErrorCatalog
    url: errors/epsilon3-problem-types.yml
- name: Epsilon3 Realtime API
  description: 'SocketIO and webhook realtime interface for integrating third-party systems with running Epsilon3 procedures.
    Four namespaces are published: commanding (/v1/commands/realtime), external data (/v1/external-data/items), notifications
    (/v1/notifications/realtime) and telemetry (/v1/telemetry/realtime). Webhook deliveries are signed with an Epsilon3-Signature
    header verified against a per-workspace webhook key. Realtime authentication requires a team-scoped API key.'
  humanURL: https://docs.epsilon3.io/#realtime-introduction
  baseURL: https://api.epsilon3.io
  tags:
  - Real-Time
  - Webhook
  - Telemetry
  - Commanding
  tags_raw:
  - Realtime
  - Webhooks
  - Telemetry
  - Commanding
  properties:
  - type: Webhooks
    url: asyncapi/epsilon3-realtime-webhooks.yml
  - type: Documentation
    url: https://docs.epsilon3.io/#realtime-introduction
- name: Epsilon3 MCP Server
  description: 'Hosted, remote Model Context Protocol server exposing Epsilon3 procedures, runs, parts and inventory, and
    issues to MCP-capable assistants. Read-only in the current preview: it can search, open, query and trace records but cannot
    create, edit or delete. Authorization is OAuth 2.1 authorization-code with PKCE S256 and dynamic client registration,
    with fifteen scopes advertised via RFC 8414 and RFC 9728 metadata; an Epsilon3 API key may also be presented as a bearer
    token. Regional endpoints are published for the UK and EU.'
  humanURL: https://www.epsilon3.io/behind-the-console/introducing-epsilon3-mcp-preview
  baseURL: https://mcp.epsilon3.io
  tags:
  - MCP
  - Agents
  - Search
  properties:
  - type: MCPServer
    url: mcp/epsilon3-mcp.yml
  - type: ToolCrosswalk
    url: mcp/epsilon3-tool-crosswalk.yml
  - type: OAuthScopes
    url: scopes/epsilon3-scopes.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.epsilon3.io/
- type: DeveloperPortal
  url: https://docs.epsilon3.io/
- type: Documentation
  url: https://docs.epsilon3.io/
- type: APIReference
  url: https://docs.epsilon3.io/#introduction
- type: GettingStarted
  url: https://support.epsilon3.io/en/articles/8779712-generate-api-key
- type: Support
  url: https://www.epsilon3.io/support
- type: HelpCenter
  url: https://support.epsilon3.io/
- type: Blog
  url: https://www.epsilon3.io/behind-the-console
- type: Pricing
  url: https://www.epsilon3.io/pricing
- type: SignUp
  url: https://app.epsilon3.io/
- type: TermsOfService
  url: https://www.epsilon3.io/terms
- type: PrivacyPolicy
  url: https://www.epsilon3.io/privacy
- type: StatusPage
  url: https://status.epsilon3.io/
- type: TrustCenter
  url: security/epsilon3-trust-center.yml
- type: Compliance
  url: https://www.epsilon3.io/security
- type: ChangeLog
  url: changelog/epsilon3-changelog.yml
- type: Lifecycle
  url: lifecycle/epsilon3-lifecycle.yml
- type: Deprecation
  url: lifecycle/epsilon3-lifecycle.yml
- type: Authentication
  url: authentication/epsilon3-authentication.yml
- type: OAuthScopes
  url: scopes/epsilon3-scopes.yml
- type: Conventions
  url: conventions/epsilon3-conventions.yml
- type: RateLimits
  url: rate-limits/epsilon3-rate-limits.yml
- type: Plans
  url: plans/epsilon3-plans-pricing.yml
- type: ErrorCatalog
  url: errors/epsilon3-problem-types.yml
- type: Conformance
  url: conformance/epsilon3-conformance.yml
- type: WellKnown
  url: well-known/epsilon3-well-known.yml
- type: MCPServer
  url: mcp/epsilon3-mcp.yml
- type: ToolCrosswalk
  url: mcp/epsilon3-tool-crosswalk.yml
- type: Webhooks
  url: asyncapi/epsilon3-realtime-webhooks.yml
- type: LLMsTxt
  url: llms/epsilon3-llms.txt
- type: Packages
  url: packages/epsilon3-packages.yml
- type: DomainSecurity
  url: security/epsilon3-domain-security.yml
x-enrichment:
  date: '2026-08-12'
  status: enriched
  artifacts_added: 20
  pass: local-v1