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 API contracts indexed 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.

The Border0 catalog on APIs.io includes 1 Spectral governance ruleset.

Border0’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, changelog, and 25 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

50.7/100 developing ▬ flat Agent 24/100 agent aware Front door AI 1/6 silent Heartbeat 60/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 3 Agent Skills

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

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Cybersecurity Management

BC-620

Audit ActionsClientMtls-CaOrganizationPoliciesPolicy

GET /organization/identity_providers PUT /policy/{uuid} GET /client/auth/org/{slug} GET /client/resources

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 50.7/100 · developing

Contract Quality 9.3 / 19

Developer Ergonomics 8.8 / 15

Access Clarity 5.1 / 15

Operational Transparency 4.4 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 4.6 / 15

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

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 34.2 — up to +13.2 composite points
Contract Quality scores 49.4 — up to +12.7 composite points
Contract Governance scores 18.2 — up to +9.8 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/border0/apis.yml: open an issue on github.com/api-evangelist/border0 to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
DigitalOcean Marketplace (partner 1-click apps and SaaS add-ons)	builds-on	46.0	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 4

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

IAM

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

SSH

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

VPN

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

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 15

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

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 15

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Audit Border0 sessions and access activity

AGENT SKILL

Create a Border0 socket and attach an access policy

AGENT SKILL

Provision a Border0 service account for automation

AGENT SKILL

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Border0

SLA

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Border0 API Rules

60 rules · 46 errors 10 warnings 4 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Border0 Openapi Overlay

2 actions · update · border0-openapi.json

DERIVED

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 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

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: '2026-11-06'
  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'
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-09-20
tags:
- Zero Trust
- Network Access
- Security
- Identity and Access Management
- Infrastructure
- VPN
- SSH
- Database
- Kubernetes
- Company
tags_raw:
- 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:
  - Sessions
  tags_raw:
  - 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: CapabilityMap
  url: capabilities/border0-capability-edges.yml
  name: Border0 Business Capability Map
- 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

Border0 API — frequently asked questions

Does Border0 have an API?

Yes. APIs.io lists 15 APIs from Border0, including Border0 Audit Actions API, Border0 Client API and Border0 Connect API, and 12 more.

Is there an OpenAPI specification for the Border0 API?

Yes. APIs.io indexes 15 OpenAPI specifications for Border0, each linked for download from this page.

How do I authenticate with the Border0 API?

Border0 uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Border0 Authentication.

Is the Border0 API ready for AI agents?

Border0 has a Kin Score of 50.7 out of 100 (developing) and an Agent Readiness score of 23.6 (agent-aware), scored by API Evangelist on 2026-11-06.

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