Border0

Border0 is an identity-aware Zero Trust network access platform for securing access to infrastructure — SSH and RDP servers, PostgreSQL/MySQL/MSSQL/MongoDB/Elasticsearch databases, Kubernetes clusters, AWS consoles and S3 buckets, and any internal HTTP or TCP service. Instead of VPNs and shared credentials, Border0 publishes each resource as a policy-gated "socket," authenticates users through their existing SSO/identity provider, and records every session for audit. Its REST admin API (api.border0.com/api/v1) manages sockets, access policies, connectors, organizations, identity providers, service accounts, tokens, sessions, and audit logs, and is complemented by an official Go SDK, a Terraform provider, a CLI, and GitHub Actions. Border0 was acquired by Tailscale in March 2026.

Border0 publishes 15 APIs on the APIs.io network, including Audit Actions API, Client API, Connect API, and 12 more. Tagged areas include Zero Trust, Network Access, Security, Identity and Access Management, and Infrastructure.

Border0’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, changelog, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub

45.3/100 developing ▬ flat Agent 24/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Zero Trust Network Access Security Identity and Access Management Infrastructure VPN SSH Databases Kubernetes Company

Kin Score

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

Composite quality — 45.3/100 · developing

Contract Quality 12.3 / 23

Developer Ergonomics 8.5 / 18

Access Clarity 6.2 / 18

Operational Transparency 4.6 / 12

Contract Governance 0.5 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 2.8 / 10

Agent readiness — 24/100 · 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 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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/border0: 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 15

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

Border0 Audit Actions API

The Audit Actions API from Border0 — 2 operation(s) for audit actions.

Border0 Client API

The Client API from Border0 — 6 operation(s) for client.

Border0 Connect API

The Connect API from Border0 — 1 operation(s) for connect.

Border0 Login API

The Login API from Border0 — 2 operation(s) for login.

Border0 Mtls-Ca API

The Mtls-Ca API from Border0 — 3 operation(s) for mtls-ca.

Border0 Organization API

The Organization API from Border0 — 4 operation(s) for organization.

Border0 Organizations API

The Organizations API from Border0 — 15 operation(s) for organizations.

Border0 Policies API

The Policies API from Border0 — 2 operation(s) for policies.

Border0 Policy API

The Policy API from Border0 — 1 operation(s) for policy.

Border0 Session API

The Session API from Border0 — 3 operation(s) for session.

Border0 Sessions API

The Sessions API from Border0 — 2 operation(s) for sessions.

Border0 Socket API

The Socket API from Border0 — 10 operation(s) for socket.

Border0 Stats API

The Stats API from Border0 — 2 operation(s) for stats.

Border0 User API

The User API from Border0 — 4 operation(s) for user.

Border0 Users API

The Users API from Border0 — 5 operation(s) for users.

Scroll for all 15

Open Collections 16

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

API Collection

OPEN COLLECTION

Border0 Audit Actions API

OPEN COLLECTION

Border0 Audit Actions Client API

OPEN COLLECTION

Border0 Audit Actions Connect API

OPEN COLLECTION

Border0 Audit Actions Login API

OPEN COLLECTION

Border0 Audit Actions Mtls-Ca API

OPEN COLLECTION

Border0 Audit Actions Organization API

OPEN COLLECTION

Border0 Audit Actions Organizations API

OPEN COLLECTION

Border0 Audit Actions Policies API

OPEN COLLECTION

Border0 Audit Actions Policy API

OPEN COLLECTION

Border0 Audit Actions Session API

OPEN COLLECTION

Border0 Audit Actions Sessions API

OPEN COLLECTION

Border0 Audit Actions Socket API

OPEN COLLECTION

Border0 Audit Actions Stats API

OPEN COLLECTION

Border0 Audit Actions User API

OPEN COLLECTION

Border0 Audit Actions Users API

OPEN COLLECTION

Scroll for all 16

Security Posture 3

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

Border0 Authentication

apiKey · 1 scheme

SECURITY

Border0 Domain Security

TLSv1.3 · DMARC

SECURITY

Border0 Vulnerability Disclosure

Hackerone · contact published

SECURITY

Agentic Access 1

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

Border0 Agentic Access

89 operations · 53 acting · 4 human-in-the-loop

89 operations · 53 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Conformance

ErrorCatalog

Lifecycle

DataModel

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 4

Authentication, authorization, and security posture

Security

Security

DomainSecurity

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: border0
name: Border0
description: Border0 is an identity-aware Zero Trust network access platform for securing access to infrastructure — SSH and
  RDP servers, PostgreSQL/MySQL/MSSQL/MongoDB/Elasticsearch databases, Kubernetes clusters, AWS consoles and S3 buckets, and
  any internal HTTP or TCP service. Instead of VPNs and shared credentials, Border0 publishes each resource as a policy-gated
  "socket," authenticates users through their existing SSO/identity provider, and records every session for audit. Its REST
  admin API (api.border0.com/api/v1) manages sockets, access policies, connectors, organizations, identity providers, service
  accounts, tokens, sessions, and audit logs, and is complemented by an official Go SDK, a Terraform provider, a CLI, and
  GitHub Actions. Border0 was acquired by Tailscale in March 2026.
url: https://raw.githubusercontent.com/api-evangelist/border0/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  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://cdn.prod.website-files.com/6329655518c5f56d63ac0eb8/673ac517dcc68218bae5a42d_img-border0-opengraph.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: enriched
x-tier-reason: portfolio-lead-enriched
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Zero Trust
- Network Access
- Security
- Identity and Access Management
- Infrastructure
- VPN
- SSH
- Databases
- Kubernetes
- Company
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: border0:border0-audit-actions-api
  name: Border0 Audit Actions API
  description: The Audit Actions API from Border0 — 2 operation(s) for audit actions.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Audit Actions
  properties:
  - type: OpenAPI
    url: openapi/border0-audit-actions-api-openapi.yml
- aid: border0:border0-client-api
  name: Border0 Client API
  description: The Client API from Border0 — 6 operation(s) for client.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Clients
  tags_raw:
  - Client
  properties:
  - type: OpenAPI
    url: openapi/border0-client-api-openapi.yml
- aid: border0:border0-connect-api
  name: Border0 Connect API
  description: The Connect API from Border0 — 1 operation(s) for connect.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Connect
  properties:
  - type: OpenAPI
    url: openapi/border0-connect-api-openapi.yml
- aid: border0:border0-login-api
  name: Border0 Login API
  description: The Login API from Border0 — 2 operation(s) for login.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Login
  properties:
  - type: OpenAPI
    url: openapi/border0-login-api-openapi.yml
- aid: border0:border0-mtls-ca-api
  name: Border0 Mtls-Ca API
  description: The Mtls-Ca API from Border0 — 3 operation(s) for mtls-ca.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Mtls-Ca
  properties:
  - type: OpenAPI
    url: openapi/border0-mtls-ca-api-openapi.yml
- aid: border0:border0-organization-api
  name: Border0 Organization API
  description: The Organization API from Border0 — 4 operation(s) for organization.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Organization
  properties:
  - type: OpenAPI
    url: openapi/border0-organization-api-openapi.yml
- aid: border0:border0-organizations-api
  name: Border0 Organizations API
  description: The Organizations API from Border0 — 15 operation(s) for organizations.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Organization
  tags_raw:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/border0-organizations-api-openapi.yml
- aid: border0:border0-policies-api
  name: Border0 Policies API
  description: The Policies API from Border0 — 2 operation(s) for policies.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Policies
  properties:
  - type: OpenAPI
    url: openapi/border0-policies-api-openapi.yml
- aid: border0:border0-policy-api
  name: Border0 Policy API
  description: The Policy API from Border0 — 1 operation(s) for policy.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Policy
  properties:
  - type: OpenAPI
    url: openapi/border0-policy-api-openapi.yml
- aid: border0:border0-session-api
  name: Border0 Session API
  description: The Session API from Border0 — 3 operation(s) for session.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Session
  properties:
  - type: OpenAPI
    url: openapi/border0-session-api-openapi.yml
- aid: border0:border0-sessions-api
  name: Border0 Sessions API
  description: The Sessions API from Border0 — 2 operation(s) for sessions.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Sessions
  properties:
  - type: OpenAPI
    url: openapi/border0-sessions-api-openapi.yml
- aid: border0:border0-socket-api
  name: Border0 Socket API
  description: The Socket API from Border0 — 10 operation(s) for socket.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Socket
  properties:
  - type: OpenAPI
    url: openapi/border0-socket-api-openapi.yml
- aid: border0:border0-stats-api
  name: Border0 Stats API
  description: The Stats API from Border0 — 2 operation(s) for stats.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - Stats
  properties:
  - type: OpenAPI
    url: openapi/border0-stats-api-openapi.yml
- aid: border0:border0-user-api
  name: Border0 User API
  description: The User API from Border0 — 4 operation(s) for user.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/border0-user-api-openapi.yml
- aid: border0:border0-users-api
  name: Border0 Users API
  description: The Users API from Border0 — 5 operation(s) for users.
  humanURL: https://docs.border0.com/reference
  baseURL: https://api.border0.com/api/v1
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/border0-users-api-openapi.yml
common:
- type: Overlay
  url: overlays/border0-openapi-overlay.yaml
- type: Website
  url: https://www.border0.com
- type: DeveloperPortal
  url: https://portal.border0.com
- type: Documentation
  url: https://docs.border0.com
- type: APIReference
  url: https://docs.border0.com/reference
- type: GettingStarted
  url: https://docs.border0.com/docs/quick-start-copy
- type: Support
  url: https://docs.border0.com/docs/getting-help
- type: Blog
  url: https://www.border0.com/blog
- type: GitHubOrganization
  url: https://github.com/borderzero
- type: SignUp
  url: https://portal.border0.com/register
- type: Login
  url: https://portal.border0.com/login
- type: TermsOfService
  url: https://www.border0.com/terms-of-service
- type: PrivacyPolicy
  url: https://www.border0.com/privacy-policy
- type: StatusPage
  url: https://status.border0.com
- type: ChangeLog
  url: changelog/border0-changelog.yml
- type: Security
  url: https://docs.border0.com/docs/security-policy
- type: DomainSecurity
  url: security/border0-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/border0-vulnerability-disclosure.yml
- type: AgenticAccess
  url: agentic-access/border0-agentic-access.yml
- type: Authentication
  url: authentication/border0-authentication.yml
- type: Conventions
  url: conventions/border0-conventions.yml
- type: Conformance
  url: conformance/border0-conformance.yml
- type: ErrorCatalog
  url: errors/border0-problem-types.yml
- type: Lifecycle
  url: lifecycle/border0-lifecycle.yml
- type: DataModel
  url: data-model/border0-data-model.yml
- type: Packages
  url: packages/border0-packages.yml
- type: SDKs
  url: packages/border0-packages.yml
- type: CLI
  url: cli/border0-cli.yml
- type: X-MCPServerCandidate
  url: mcp/border0-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/border0-llms.txt
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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