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BitDive
What it is
BitDive records runtime activity from Java and Kotlin services and turns those executions into replayable JUnit 5 tests. Engineering teams can compare behavior before and after a code change to spot differences such as SQL drift, additional HTTP calls, or performance regressions. Its agent captures method calls, SQL queries, HTTP requests, Kafka messages, JVM metrics, and exception traces, working at the bytecode level without source-code changes. It supports Java 8 through 21, and generated tests run with Maven or Gradle. BitDive also makes runtime context and trace operations available through MCP to AI coding tools such as Cursor, Windsurf, and Claude. Its integrations list includes 49 technologies, among them Spring Boot, PostgreSQL, MongoDB, Kafka, JUnit 5, and Testcontainers. Deployment options include hosted SaaS, on-premise, self-hosted, and air-gapped installations. The free Developer Use plan is free and includes the workflow, but has no SLA, indemnities, or custom engineering. Company Rollout pricing is custom.
For and against
For
- Records calls, queries, requests, messages, metrics, and exceptions
- Generates replayable JUnit 5 tests
- Works with Java 8 through 21
- Offers hosted, on-premise, and air-gapped deployment
- Masks sensitive fields inside the JVM
Against
- Free individual use has no SLA
- Free individual use excludes indemnities and custom engineering
- Enterprise retention policies are custom
The verdict
BitDive connects recorded service behavior with repeatable JUnit verification and before-and-after comparisons. Individual developers can use the workflow free, while company rollout pricing is custom.
Who it suits
BitDive suits JVM engineering teams that want to verify code changes against real service behavior. It is also relevant to teams using AI coding tools or needing self-hosted and air-gapped deployment options.
Plans and prices
Developer Use
Full BitDive workflow for individual developers · runtime traces and comparisons · deterministic JUnit replay · MCP access
Read 7 Oct 2026 · bitdive.io
Company Rollout
Organizational rollout · SSO, RBAC, auditability · private cloud, self-hosted, or air-gapped deployment · priority support
Read 7 Oct 2026 · bitdive.io
On the record
- AI integration
- BitDive exposes runtime context and trace operations through MCP for AI coding tools including Cursor, Windsurf, and Claude.bitdive.io · read 7 Oct 2026
- Data collection limits
- The agent page says it does not collect source files, filesystem contents beyond its temporary directory, or network traffic outside the instrumented application.bitdive.io · read 7 Oct 2026
- Deployment
- Documented deployment options include hosted SaaS, on-premise, and air-gapped installations; the quick start also gives a one-command self-hosted setup.bitdive.io · read 7 Oct 2026
- Integrations
- The integrations page lists 49 supported technologies, including Java, Kotlin, Spring Boot, PostgreSQL, MongoDB, Kafka, JUnit 5, Testcontainers, and Maven.bitdive.io · read 7 Oct 2026
- Intended users
- BitDive describes its intended audience as modern JVM engineering teams verifying changes against real service behavior.bitdive.io · read 7 Oct 2026
- Purpose
- BitDive captures runtime behavior from Java and Kotlin services and turns recorded executions into replay-based JUnit suites for verifying code changes.bitdive.io · read 7 Oct 2026
- Retention
- The architecture page lists default detailed trace retention of 14 days for Starter and 90 days for Pro, with custom policies for Enterprise.bitdive.io · read 7 Oct 2026
- Runtime capture
- The agent records method calls, SQL queries, HTTP requests, Kafka messages, JVM metrics, and exception traces.bitdive.io · read 7 Oct 2026
- Runtime scope
- The agent supports Java 8 through 21 and captures bytecode-level behavior without requiring source-code changes.bitdive.io · read 7 Oct 2026
- Security
- The security page specifies TLS 1.3 in transit, AES-256 at rest, and masking of sensitive fields inside the JVM before data leaves it.bitdive.io · read 7 Oct 2026
- Support and limits
- Free individual developer use is provided as-is without SLA commitments, indemnities, or custom engineering work; company rollout includes priority support.bitdive.io · read 7 Oct 2026
- Test generation
- Recorded executions become replayable JUnit 5 tests that run with standard Maven or Gradle tooling.bitdive.io · read 7 Oct 2026
- Trace comparison
- BitDive compares before-and-after runtime behavior to surface changes such as SQL drift, extra HTTP calls, and performance regressions.bitdive.io · read 7 Oct 2026
