# Firecracker

**Canonical:** https://apis.io/providers/firecracker/  
**Website:** https://firecracker-microvm.github.io/  
**APIs profiled:** 19

Firecracker is an open source virtual machine monitor (VMM) built by Amazon Web Services that uses KVM to create and manage lightweight microVMs. Designed for serverless computing and container workloads, it provides the security and isolation of traditional VMs with the speed and resource efficiency of containers. Firecracker exposes a RESTful management API over a Unix Domain Socket, specified in OpenAPI (Swagger 2.0).

## Kin Score — 30.9 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 30.9).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 43.2 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 36.8 |
| Developer Ergonomics | 28.6 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 20.5 (agent-aware)

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

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (19)

- **Firecracker Actions API** — The Actions API from Firecracker — 1 operation(s) for actions.
- **Firecracker Balloon API** — The Balloon API from Firecracker — 5 operation(s) for balloon.
- **Firecracker Boot Source API** — The Boot Source API from Firecracker — 1 operation(s) for boot source.
- **Firecracker Cpu Config API** — The Cpu Config API from Firecracker — 1 operation(s) for cpu config.
- **Firecracker Drives API** — The Drives API from Firecracker — 1 operation(s) for drives.
- **Firecracker Entropy API** — The Entropy API from Firecracker — 1 operation(s) for entropy.
- **Firecracker Firecracker API API** — The Firecracker API API from Firecracker — 1 operation(s) for firecracker api.
- **Firecracker Hotplug API** — The Hotplug API from Firecracker — 1 operation(s) for hotplug.
- **Firecracker Logger API** — The Logger API from Firecracker — 1 operation(s) for logger.
- **Firecracker Machine Config API** — The Machine Config API from Firecracker — 1 operation(s) for machine config.
- **Firecracker Metrics API** — The Metrics API from Firecracker — 1 operation(s) for metrics.
- **Firecracker Mmds API** — The Mmds API from Firecracker — 2 operation(s) for mmds.
- **Firecracker Network Interfaces API** — The Network Interfaces API from Firecracker — 1 operation(s) for network interfaces.
- **Firecracker Pmem API** — The Pmem API from Firecracker — 1 operation(s) for pmem.
- **Firecracker Serial API** — The Serial API from Firecracker — 1 operation(s) for serial.
- **Firecracker Snapshot API** — The Snapshot API from Firecracker — 2 operation(s) for snapshot.
- **Firecracker Version API** — The Version API from Firecracker — 1 operation(s) for version.
- **Firecracker Vm API** — The Vm API from Firecracker — 2 operation(s) for vm.
- **Firecracker Vsock API** — The Vsock API from Firecracker — 1 operation(s) for vsock.

## Agentic access (1)

- **Firecracker Agentic Access** — 38 operations · 29 acting · 1 human-in-the-loop

## Plans (1)

- **Firecracker Plans Pricing**

## Tags

Containers, MicroVMs, Open-Source, Serverless, Virtualization, KVM

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