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The first major addition to the Harbor task format: tasks split into sequential steps, each with its own instruction and verifier.
April 23, 2026 · The Harbor Team
We’re releasing the first major addition to the Harbor task format: multi-step tasks. A multi-step task runs an agent through a sequence of ordered steps against a single, shared environment. Each step has its own instruction and verifier. Multi-step tasks are helpful when implementing long-horizon tasks with early stopping conditions, testing continual learning methods like memory, and observing an agent’s ability to build on its prior work.
task.toml
environment/
Dockerfile
steps/
step-one/
instruction.md
workdir/
setup.sh
...
tests/
test.sh
solution/
solve.sh
step-two/
instruction.md
...
tests/
test.sh
uv tool install "harbor>=0.5.0"
pip install "harbor>=0.5.0"
create-task skill:
npx skills add harbor-framework/harbor --skill create-task
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