OPNsense

OPNsense is an open source FreeBSD-based firewall and routing platform providing stateful packet filtering, VPN (IPsec, OpenVPN, WireGuard), intrusion detection (Suricata), traffic shaping, captive portal, and high availability for home, enterprise, and managed service provider deployments. The platform features a web UI, plugin ecosystem, and a comprehensive Business Edition. OPNsense exposes a REST API for managing every core module and plugin, using HTTP basic authentication with an API key and secret.

OPNsense publishes 3 APIs on the APIs.io network: Core API, Diagnostics API, and Firewall API. Tagged areas include Firewall, Networking, Security, VPN, and Routing.

OPNsense’s developer surface includes authentication, documentation, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

25.1/100 emerging ▬ flat Agent 17/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Firewall Networking Security VPN Routing Open-Source

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 25.1/100 · emerging

Contract Quality 12.1 / 23

Developer Ergonomics 4.7 / 18

Access Clarity 0.0 / 18

Operational Transparency 0.3 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/opnsense: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

OPNsense Core REST API

REST API covering all core OPNsense modules including firewall, NAT, interfaces, VPN (IPsec, OpenVPN, WireGuard), routing, DHCP, DNS, users, and system administration. Authentic...

OPNsense Core API

Core OPNsense service controllers.

OPNsense Diagnostics API

Interface and system diagnostics.

OPNsense Firewall API

Firewall filter and aliases.

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

OPNsense REST Core API

OPEN COLLECTION

OPNsense REST Core Diagnostics API

OPEN COLLECTION

OPNsense REST Core Firewall API

OPEN COLLECTION

OPNsense Core REST API

OPEN COLLECTION

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Opnsense Authentication

http · 1 scheme

SECURITY

Opnsense Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Opnsense Agentic Access

6 operations · 2 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Forums

Forums

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 3

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Download

Download

Business Edition

Business Edition

Source (apis.yml)

aid: opnsense
name: OPNsense
description: OPNsense is an open source FreeBSD-based firewall and routing platform providing stateful packet filtering, VPN
  (IPsec, OpenVPN, WireGuard), intrusion detection (Suricata), traffic shaping, captive portal, and high availability for
  home, enterprise, and managed service provider deployments. The platform features a web UI, plugin ecosystem, and a comprehensive
  Business Edition. OPNsense exposes a REST API for managing every core module and plugin, using HTTP basic authentication
  with an API key and secret.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/opnsense.png
tags:
- Firewall
- Networking
- Security
- VPN
- Routing
- Open-Source
tags_raw:
- Firewall
- Networking
- Security
- VPN
- Routing
- Open Source
url: https://raw.githubusercontent.com/api-evangelist/opnsense/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.23'
apis:
- aid: opnsense:core-api
  name: OPNsense Core REST API
  description: REST API covering all core OPNsense modules including firewall, NAT, interfaces, VPN (IPsec, OpenVPN, WireGuard),
    routing, DHCP, DNS, users, and system administration. Authentication uses HTTP basic auth with an API key as username
    and API secret as password.
  humanURL: https://docs.opnsense.org/development/api.html
  baseURL: https://opnsense.local/api
  tags:
  - Firewall
  - Networking
  - VPN
  - System Administration
  properties:
  - type: Documentation
    url: https://docs.opnsense.org/development/api.html
  - type: Core API Reference
    url: https://docs.opnsense.org/development/api.html#core-api
  - type: Plugins API Reference
    url: https://docs.opnsense.org/development/api.html#plugins
  - type: Authentication
    url: https://docs.opnsense.org/development/how-tos/api.html
- aid: opnsense:opnsense-core-api
  name: OPNsense Core API
  description: Core OPNsense service controllers.
  humanURL: https://docs.opnsense.org/development/api.html
  baseURL: https://opnsense.local/api
  tags:
  - Core
  properties:
  - type: OpenAPI
    url: openapi/opnsense-core-api-openapi.yml
- aid: opnsense:opnsense-diagnostics-api
  name: OPNsense Diagnostics API
  description: Interface and system diagnostics.
  humanURL: https://docs.opnsense.org/development/api.html
  baseURL: https://opnsense.local/api
  tags:
  - Diagnostics
  properties:
  - type: OpenAPI
    url: openapi/opnsense-diagnostics-api-openapi.yml
- aid: opnsense:opnsense-firewall-api
  name: OPNsense Firewall API
  description: Firewall filter and aliases.
  humanURL: https://docs.opnsense.org/development/api.html
  baseURL: https://opnsense.local/api
  tags:
  - Firewall
  properties:
  - type: OpenAPI
    url: openapi/opnsense-firewall-api-openapi.yml
common:
- type: CapabilityMap
  url: capabilities/opnsense-capability-edges.yml
  name: OPNsense Business Capability Map
- type: AgenticAccess
  url: agentic-access/opnsense-agentic-access.yml
- type: DomainSecurity
  url: security/opnsense-domain-security.yml
- type: Authentication
  url: authentication/opnsense-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/showcase/opnsense
- type: Website
  url: https://opnsense.org
- type: Documentation
  url: https://docs.opnsense.org
- type: Download
  url: https://opnsense.org/download/
- type: Forums
  url: https://forum.opnsense.org
- type: GitHubOrganization
  url: https://github.com/opnsense
- type: Business Edition
  url: https://shop.opnsense.com
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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