Zenbu 2

Zenbu is a Y Combinator (Spring 2026) developer-tools startup building a fully hackable desktop interface for managing AI coding agents. The macOS app is a customizable client for the "Pi" coding agent, letting developers run multiple agents in parallel across Git worktrees, review changes, and extend the app at runtime through plugins. Zenbu is built on Zenbu.js, the company's open-source TypeScript framework for building extensible ("hackable") applications, which handles plugin loading, cross-process state sync, RPC, and hot reloading. The framework and its scaffolding tooling are published to npm under the zenbu-labs organization. Zenbu does not currently expose a hosted HTTP/REST developer API; its developer surface is the client-side Zenbu.js framework, its plugin model, and its command-line scaffolders. Founded by Rob Pruzan (ex-Vercel Next.js core, co-author of React Scan).

Zenbu 2 is profiled on the APIs.io network. Tagged areas include Company, Developer Tools, AI Coding Agents, Frameworks, and SDK.

Zenbu 2’s developer surface includes documentation, quickstart, changelog, support, CLI, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

16.6/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyDeveloper ToolsAI Coding AgentsFrameworksSDKOpen SourceDesktop ApplicationY Combinator

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 16.6/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 9.1 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.7 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 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

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/zenbu-2: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Quickstart

Quickstart

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Build 5

SDKs, sample code, and the tooling you integrate with

SourceCode

SourceCode

GitHubOrganization

Packages

SDKs

CLI

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Changelog

Changelog

Support

Support

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: zenbu-2
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/zenbu-2.png
name: Zenbu 2
description: Zenbu is a Y Combinator (Spring 2026) developer-tools startup building a fully hackable desktop interface for
  managing AI coding agents. The macOS app is a customizable client for the "Pi" coding agent, letting developers run multiple
  agents in parallel across Git worktrees, review changes, and extend the app at runtime through plugins. Zenbu is built on
  Zenbu.js, the company's open-source TypeScript framework for building extensible ("hackable") applications, which handles
  plugin loading, cross-process state sync, RPC, and hot reloading. The framework and its scaffolding tooling are published
  to npm under the zenbu-labs organization. Zenbu does not currently expose a hosted HTTP/REST developer API; its developer
  surface is the client-side Zenbu.js framework, its plugin model, and its command-line scaffolders. Founded by Rob Pruzan
  (ex-Vercel Next.js core, co-author of React Scan).
url: https://raw.githubusercontent.com/api-evangelist/zenbu-2/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Developer Tools
- AI Coding Agents
- Frameworks
- SDK
- Open Source
- Desktop Application
- Y Combinator
apis: []
common:
- type: DomainSecurity
  url: security/zenbu-2-domain-security.yml
- type: Website
  url: https://tryzenbu.dev/
- type: DeveloperPortal
  url: https://tryzenbu.dev/
- type: Documentation
  url: https://zenbulabs.mintlify.app/introduction
- type: Quickstart
  url: https://zenbulabs.mintlify.app/quickstart
- type: SourceCode
  url: https://zenbujs.dev
- type: GitHubOrganization
  url: https://github.com/zenbu-labs
- type: Changelog
  url: https://zenbulabs.mintlify.app/changelog/overview
- type: Support
  url: https://discord.gg/t3jzHHfc6z
- type: LLMsTxt
  url: llms/zenbu-2-llms.txt
- type: Packages
  url: packages/zenbu-2-packages.yml
- type: SDKs
  url: packages/zenbu-2-packages.yml
- type: CLI
  url: cli/zenbu-2-cli.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 4
  pass: local-v1