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Yaak

A fast, secure, and offline API client that works with Git.

Dev Tools · Founded 2024 · Canada

Dev Tools
Productivity
SaaS
Content Creation
Utilities

Visit yaak.app ↗Founder interest ↓

Can you vibecode this?

Yes

Customers pay for a native desktop API client that is open source, local-first and Git-synced.

Build This with Leapd →

The business

Total revenue

$85K+

Verified recently

Monthly revenue

$5K+/mo

↑ Growing · 60-day average

Peak month

~$20K

Best single month

Growth

~1.5×

Early months vs recent

For owners

Own Yaak? List it for sale.

Founders read this page looking for a business to build like your $5K+/mo one — some would rather buy one that already works. They skip the line, you get a clean exit. $25 one-time, no commission.

Why it works

Value proposition
A fast, offline API client with Git sync and a CLI.
Problem
Bloated clients like Postman force accounts, cloud storage and tracking.
Audience
Developers who test HTTP, GraphQL, gRPC and WebSocket APIs.
Business model
Open source with paid plans charged through Stripe.

Good to knowOpen sourceNo account requiredGit syncMCP serverCLI included

Can you vibecode this?

Yes

The whole product, with AI coding tools and public APIs.

Moat

Brand & trust
Community
Switching costs

Why people pay Yaak

The founder built and sold Insomnia, giving Yaak credibility no fresh copy starts with. 149k downloads and an active user community are already concentrated here. Teams storing requests in Git repos accumulate history that is costly to migrate.

Product complexity
Low
A web-based API client with accounts, billing and a dashboard is standard to build.
Data
Low
No external data providers are needed; all request data lives locally with the user.
Integrations & infrastructure
Low
Git sync and import from Postman, Insomnia and OpenAPI are standard API connections.
Human operations
Low
The product is software delivered directly to developers with no manual fulfilment.
Regulation / hardware
Low
Dev tooling for API testing carries no industry-specific licensing or compliance requirements.

Build this business

Use the build specification below with any AI coding tool, or build it directly with Leapd.

Build This with Leapd →

Leapd builds

API client with request builder, Git sync, CLI and multi-protocol support
Subscriptions or one-off payments with Stripe
Postman, Insomnia and OpenAPI import connections
A landing page

Leapd runs

Meta ads
LinkedIn and X posts
SEO and AI-search visibility
A daily report of what shipped

Opportunity check

Passes: Proven market: $5K+/mo already paid for it
Passes: Proven model: Open source with paid plans via Stripe
Passes: Proven need: Developers need a clean, offline API client
Passes: Buildable: Leapd builds it end to end

build-spec.txt

Build a web-based API client product sold to developers on a subscription or one-off payment model.

Product:
- Request builder supporting REST, HTTP, GraphQL, gRPC, WebSocket and Server-Sent Events
- Git sync that stores workspace data as plain-text files compatible with Git and Dropbox
- CLI for agents to create, update and send requests, plus an MCP server integration
- Dynamic request templating with variables, template functions and request chaining
- Authentication handling for OAuth 1/2, AWS v4, JWT, Basic, Bearer, API Key and custom schemes
- Encrypted secrets stored with ChaCha20-Poly1305 and keys held in the OS keychain
- Import from Postman, Insomnia, OpenAPI, Curl and Swagger collections
- Customer dashboard showing workspaces, request history and account settings

Billing:
- Subscription or one-off payment plans charged with Stripe

Integrations:
- Postman, Insomnia, OpenAPI and Swagger connected through their import APIs using the customer's own credentials