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Atrahasis
API Client and Development Platform.
Flexible by design.
Why Atrahasis?
The full API lifecycle, from design to production.
Lifecycle: Context-switching is the biggest invisible cost in software. Atrahasis is a platform built to minimize it across the entire API lifecycle.
Portability: Atrahasis provides solutions that are independent, yet work seamlessly together. Nothing is strict. Use one solution or several together, or alongside tools you already have. This is the Atrahasis Code: Flexibility.
Fragments
Atrahasis
API Client and Development Platform. Everything a modern API workflow needs, from Clients, Design and Flows to Load Tests, Mocks and Git, bundled into one native desktop app.
- HTTP, GraphQL, WebSocket, SSE, and Kafka clients in one app
- Local-first: no cloud, no account, no telemetry
- Git integration and Secret management
Flow Runner
Chain multiple HTTP requests into automated workflows. Extract variables, add assertions, configure retries, and run iterations, all from a visual step-by-step interface.
- Variable extraction & step chaining
- Assertions, retry logic, iterations
- Import steps from OpenAPI Projects
Visual API Designer
Design, edit, and test your APIs in one place. Switch between visual editor and JSON/YAML. Hit "Try it out" to execute requests directly from your spec.
- Visual + Code editor in split view
- Import from URL, file, or clipboard
- Schemas, security schemes, webhooks
Kafka Client
Produce to a topic and tail one in the same window as your requests. It never joins a consumer group and never commits an offset, so watching production traffic takes nothing away from the applications already reading it.
- SASL, TLS and mutual TLS, including OAUTHBEARER
- Read from latest, an offset, a time, or the last N
- Schema Registry and Avro, or bring your own schema
Load Test
Put your APIs under real pressure. Five built-in traffic shapes, live percentile metrics, and threshold gates that turn every run into a clean pass/fail verdict.
- Load, stress, spike, soak, and custom profiles
- Thresholds on latency percentiles, error rate, throughput
- Run comparison with per-step deltas
