# Capsule8

**Canonical:** https://apis.io/providers/capsule8/  
**Website:** https://capsule8.com/  
**APIs profiled:** 0

Capsule8 was a New York-based cybersecurity company (founded 2016) that built high-performance runtime visibility, detection, and response for Linux production servers and containers across on-premises and cloud workloads. Its open-source sensor exposed a gRPC (v0) telemetry API for subscribing to security events. Sophos acquired Capsule8 in July 2021 and absorbed the technology into its Adaptive Cybersecurity Ecosystem (Intercept X server protection, XDR, and Managed Threat Response). The capsule8.com domain now redirects to Sophos, the flagship open-source sensor/API repository has been removed, and no independent Capsule8 developer API, portal, or documentation remains live. This profile was surfaced as a Bessemer Venture Partners portfolio company and is retained as an acquired-company record.

## Kin Score — 5.3 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 5.3).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 0.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

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

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Tags

Company, Cybersecurity, Linux Security, Runtime Security, Container Security, Cloud Workload Protection, Acquired

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/capsule8/). Scores are computed from the provider's own public artifacts under a published rubric.