Keybase

Keybase is an end-to-end encrypted messaging, file-sharing, and key-directory platform built on public-key cryptography, founded by Chris Coyne and Max Krohn and acquired by Zoom in 2020. It maps human-readable usernames to public keys and cryptographically verifiable social-identity proofs (Twitter, GitHub, Reddit, Hacker News, personal domains, and cryptocurrency addresses), and provides encrypted chat, teams, KBFS encrypted filesystem, git, and a wallet. Keybase exposes a public read-oriented HTTP JSON API (version 1.0) at keybase.io/_/api/1.0 for user lookup, PGP key fetch, Merkle-tree verification, and session/signature auth, plus officially supported chat-bot SDKs for Node.js, Python, and Go that script the local keybase client and CLI.

Keybase publishes 1 API on the APIs.io network. Tagged areas include Company, Security, Encryption, Cryptography, and Identity.

Keybase’s developer surface includes documentation, API reference, engineering blog, support, CLI, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

22.0/100 emerging ▬ flat Agent 6/100 agent aware Front door AI 1/6 silent library Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

1 APIs

Company Security Encryption Cryptography Identity Messaging Key ManagementPGPDeveloper Tools

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 22.0/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 10.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 1.5 / 11

Contract Governance 0.5 / 10

Discoverability 6.2 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 6/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/keybase: 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 1

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

Keybase API

Keybase public HTTP JSON API (v1.0). Read-oriented endpoints for user lookup and discovery by social proof, PGP public-key fetch, Merkle-tree root and block retrieval for verifi...

Security Posture 2

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

Keybase Authentication

session-token/signature-based · 2 schemes

SECURITY

Keybase Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 2

Authentication, authorization, and security posture

Security

Security

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Source (apis.yml)

aid: keybase
name: Keybase
description: Keybase is an end-to-end encrypted messaging, file-sharing, and key-directory platform built on public-key cryptography,
  founded by Chris Coyne and Max Krohn and acquired by Zoom in 2020. It maps human-readable usernames to public keys and cryptographically
  verifiable social-identity proofs (Twitter, GitHub, Reddit, Hacker News, personal domains, and cryptocurrency addresses),
  and provides encrypted chat, teams, KBFS encrypted filesystem, git, and a wallet. Keybase exposes a public read-oriented
  HTTP JSON API (version 1.0) at keybase.io/_/api/1.0 for user lookup, PGP key fetch, Merkle-tree verification, and session/signature
  auth, plus officially supported chat-bot SDKs for Node.js, Python, and Go that script the local keybase client and CLI.
url: https://raw.githubusercontent.com/api-evangelist/keybase/refs/heads/main/apis.yml
deliveryModel:
  model: library
  open_source: false
  commercial: false
  callable_host: false
  label: Library · distributed through package registries, no callable service
  confidence: low
  source:
  - none
  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://keybase.io/images/icons/icon-keybase-logo-48.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Security
- Encryption
- Cryptography
- Identity
- Messaging
- Key Management
- PGP
- Developer Tools
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: Keybase API
  description: Keybase public HTTP JSON API (v1.0). Read-oriented endpoints for user lookup and discovery by social proof,
    PGP public-key fetch, Merkle-tree root and block retrieval for verification, and the salt/login/session and signature-posting
    flow. All responses use a status envelope of {code, name}; the API supports CORS.
  humanURL: https://keybase.io/docs/api/1.0
  baseURL: https://keybase.io/_/api/1.0
  tags:
  - Identity
  - Cryptography
  - Key Management
  properties:
  - type: Authentication
    url: authentication/keybase-authentication.yml
  - type: Conventions
    url: conventions/keybase-conventions.yml
  - type: ErrorCatalog
    url: errors/keybase-problem-types.yml
  - type: DataModel
    url: data-model/keybase-data-model.yml
  - type: X-MCPServerCandidate
    url: mcp/keybase-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: AgentSkill
    url: skills/_index.yml
  - type: Conformance
    url: conformance/keybase-conformance.yml
  - type: Lifecycle
    url: lifecycle/keybase-lifecycle.yml
common:
- type: Website
  url: https://www.keybase.io/
- type: ParentCompany
  url: https://apis.io/providers/zoom/
  name: Zoom
  x-relationship: acquired
  x-evidence: Keybase is an end-to-end encrypted messaging, file-sharing, and key-directory platform built on public-key cryptography,
    founded by Chris Coyne and Max Krohn and acquired by Zoom in 2020.
- type: DeveloperPortal
  url: https://keybase.io/docs
- type: Documentation
  url: https://keybase.io/docs
- type: APIReference
  url: https://keybase.io/docs/api/1.0
- type: Blog
  url: https://keybase.io/blog
- type: GitHubOrganization
  url: https://github.com/keybase
- type: Support
  url: https://keybase.io/docs/bug_reporting
- type: Security
  url: https://keybase.io/docs/secadv
- type: Packages
  url: packages/keybase-packages.yml
- type: SDKs
  url: packages/keybase-packages.yml
- type: CLI
  url: cli/keybase-cli.yml
- type: LLMsTxt
  url: llms/keybase-llms.txt
- type: DomainSecurity
  url: security/keybase-domain-security.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 13
  pass: local-v1

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