Chapar

Spec sheet

Purpose

Chapar is an API client for REST, gRPC and GraphQL services.Read 8 Oct 2026 · chapar.rest

Product

Chapar describes itself as a fast, private, offline API client for REST, gRPC, and GraphQL.Read 8 Oct 2026 · chapar.rest

Available platforms

desktopRead 20 Sep 2026 · chapar.rest

Free plan

YesRead 20 Sep 2026 · chapar.rest

Integrations

The import documentation lists OpenAPI specifications, protobuf files, Postman collections, requests and environments as supported import formats.Read 8 Oct 2026 · chapar.rest

Support

The project lists GitHub issues, email, X, Slack and YouTube as contact or community channels.Read 8 Oct 2026 · chapar.rest

License

The site footer says Chapar is released under the BSD 3-Clause licence.Read 8 Oct 2026 · chapar.rest

Maker

The About page says the project was started by Mohsen Mirzakhani.Read 8 Oct 2026 · chapar.rest

Configuration

Spaces, requests and environments are stored as YAML files that users can review and share in git.Read 8 Oct 2026 · chapar.rest

Encryption and telemetry

The home page says secrets are encrypted with the operating system keychain and Chapar has zero telemetry.Read 8 Oct 2026 · chapar.rest

Environment variables

Environments hold API keys, base URLs, and other API-specific settings, and their variables can be referenced in requests with double-brace syntax.Read 8 Oct 2026 · chapar.rest

Environments

Environments store API keys, base URLs and other API-specific settings, and variables can be used in requests with double-brace syntax.Read 8 Oct 2026 · chapar.rest

GraphQL support

YesRead 20 Sep 2026 · chapar.rest

gRPC support

YesRead 20 Sep 2026 · chapar.rest

Imports

Chapar supports importing Postman collections and environments, OpenAPI specifications, proto files and curl commands.Read 8 Oct 2026 · chapar.rest

Local data

The documentation says Chapar stores data locally on the machine and allows changing the data location in settings.Read 8 Oct 2026 · chapar.rest

Mock server

Chapar provides a free public mock API that supports REST and gRPC; GraphQL, WebSocket, and MQTT support are described as planned.Read 8 Oct 2026 · chapar.rest

Mock server limits

The shared mock server limits clients to 10 requests per second with bursts up to 30, 10 concurrent requests, and 10 MiB request bodies.Read 8 Oct 2026 · chapar.rest

Organization

Workspaces organize requests and collections.Read 8 Oct 2026 · chapar.rest

Project status

The About page describes Chapar as an early beta project under active development.Read 8 Oct 2026 · chapar.rest

Release status

The home page links to release v0.9.1, and the About page describes Chapar as early beta and under active development.Read 8 Oct 2026 · chapar.rest

Requests

It supports HTTP methods and body types, gRPC with reflection or proto files, and GraphQL queries.Read 8 Oct 2026 · chapar.rest

Scripting

It supports Python pre-request and post-request scripts with tests in a sandboxed executor.Read 8 Oct 2026 · chapar.rest

Scripts

It supports Python pre-request and post-request scripts with tests in a sandboxed executor.Read 8 Oct 2026 · chapar.rest

Sensitive data limit

The documentation warns that environment variables are stored as files, so sensitive values can remain in the filesystem when sharing data.Read 8 Oct 2026 · chapar.rest

Support and community

The site lists GitHub issue reporting, Slack, X, and YouTube as community contact channels.Read 8 Oct 2026 · chapar.rest

Testing

Users can chain requests into test cases with assertions and captures, then run them in CI with chapar-cli.Read 8 Oct 2026 · chapar.rest

Testing and CI

Users can chain requests into test cases with assertions and captures, then run them in CI with chapar-cli.Read 8 Oct 2026 · chapar.rest

WebSocket support

NoRead 20 Sep 2026 · chapar.rest

Workspaces

Workspaces organize requests and collections.Read 8 Oct 2026 · chapar.rest

Plans and prices

Every Chapar plan and price →

Where Specifiction places it

• API clients#17 of 388.3