# Epsilon3

**Canonical:** https://apis.io/providers/epsilon3/  
**Website:** https://www.epsilon3.io/  
**APIs profiled:** 3

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.

## Kin Score — 63.4 / 100 (strong)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 63.4).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 51.6 |
| Governance | 12.5 |
| Operational Transparency | 78.9 |
| Developer Ergonomics | 60.9 |
| Commercial Clarity | 92.1 |

## Agent readiness — 48.2 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | yes |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (3)

- **Epsilon3 REST API** — REST API for the Epsilon3 operations platform, organized into roughly twenty API families: Builds (work orders, parts, inventory, purchase and sale orders, vendors, tooling, shi...
- **Epsilon3 Realtime API** — SocketIO and webhook realtime interface for integrating third-party systems with running Epsilon3 procedures. Four namespaces are published: commanding (/v1/commands/realtime), ...
- **Epsilon3 MCP Server** — 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 ...

## MCP servers (1)

- **epsilon3-mcp.yml**

## Security (3)

- **Epsilon3 Authentication** — http/oauth2 · 4 schemes
- **Epsilon3 Domain Security** — TLSv1.3 · HSTS · DMARC
- **Epsilon3 Trust Center** — SOC 2 Type II, FedRAMP High Authorization, NIST SP 800-171, DFARS 252.204-7012, CMMC, ITAR, EAR

## Plans (1)

- **Epsilon3 Plans Pricing**

## Tags

Company, Operations, Aerospace, Space, Defense, Manufacturing, Procedures, Workflow, Inventory, Telemetry, Test Management, Project Management, MCP

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/epsilon3/). Scores are computed from the provider's own public artifacts under a published rubric.