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Chapar

Open-source Go tool for fast, private API testing over HTTP and gRPC with Python scripting and secure tunnels.

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Chapar

Chapar's Top Features

Fast performance (Go-based)
Privacy-focused (local-only data)
Secrets encryption
Zero telemetry
HTTP support
gRPC support
Python scripting with SDK
Pre- and post-request scripts
Secure tunnel to development environments
Config as code (file-based)

Frequently asked questions about Chapar

Chapar is a native API testing tool built with Go that simplifies and speeds up testing for HTTP and gRPC APIs.

Yes. Chapar is open source under the BSD-3-Clause license, allowing free use and modification.

It’s built in Go for high performance and designed for efficient API testing workflows.

Chapar keeps data local, encrypts secrets, and has zero telemetry to protect user privacy.

Chapar supports both HTTP and gRPC protocols.

Yes. It offers a Python SDK and supports Python-based pre- and post-request scripts.

Configurations are stored as files, making them easy to save, share, and version-control.

Chapar can create a secure tunnel to your dev environment, ideal for testing non-public gRPC methods.

Yes. It has a clean, intuitive UI and supports sharing configurations within teams.

Chapar is in early beta, actively evolving while offering core API testing features.

Chapar's pricing

Custom

$0/custom

  • Single API to access multiple LLMs and speech models
  • Support for inference, dataset management, and workflows
  • Capabilities for RAG, agents, orchestration, and observability

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