USE CASE
Test coverage that shows up as a pull request
Test generation is the work of covering untested code paths with tests that actually run in your project’s harness. Hyperlane identifies the gaps, writes tests in the repository’s existing framework, executes them in its sandbox, and opens a pull request only when the new tests pass.
Tell the agent which module needs tests. It writes them, runs them, and opens a PR - coverage gain measurable before you merge.
Tests that actually run
The agent writes tests inside the repo’s real harness - same runners, same fixtures - and executes them in its sandbox. If they don’t pass, it keeps iterating until they do.
Target the gaps, not the noise
Point it at uncovered paths, recently-changed files, or a coverage threshold. The deliverable is a focused PR, not a shotgun of superficial cases.
Regression suites from incidents
Pair it with bug fixing: every fixed bug gets a regression test in the same PR, so the same failure can’t ship twice.
What Hyperlane ships
- Autonomous agent loop that plans, edits, runs, and verifies work end-to-end
- Every run executes inside an isolated, resource-capped sandbox
- Live execution traces - diffs, terminal output, and reasoning as it happens
- GitHub-native workflow: pushes branches and opens pull requests itself
- Web app, REST API, TypeScript SDK, CLI, and MCP server interfaces
- Dollar-for-dollar credits - pay $20, get $20 of agent work
Frequently asked
Does it write tests in our framework?
Yes - it detects the existing test setup (vitest, jest, pytest, go test…) and writes in that idiom, verified by actually running the suite.
Last verified 11 Nov 2026.
Sources: Hyperlane documentation Hyperlane pricing
Keep exploring
Delegate the ticket. Review the PR.
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