WideSWE: Can Coding Agents Coordinate Changes Across Repositories?

A benchmark for implementing one shared feature or bug fix across multiple repositories.

Overview

WideSWE contains 120 real-world software-engineering tasks across 41 software ecosystems, balanced between 60 bug fixes and 60 features. Each task requires coordinated changes across multiple repositories in the same ecosystem.

Agents receive one shared request and a historical workspace containing target repositories and, where available, additional context repositories. Hidden tests evaluate the resulting changes; a task succeeds only when every target repository passes all required checks.

This dataset provides the task definitions, pinned repository revisions, environment configurations, reference patches, and hidden-test definitions. The code repository provides the evaluation harness and instructions for preparing workspaces and running agents.

Browse all tasks   ·   View results   ·   Run evaluation

Dataset Contents

release120.tsv is the canonical task index. Each task is stored under cases/<ecosystem>/<case_id>/.

File or directory	Contents
prompt.md	Shared task prompt shown to the agent.
repos.yaml	Participating repositories and pinned revisions.
task.yaml, harness.yaml, validation.yaml	Task and evaluation configuration.
environment/	Dockerfiles, dependency locks, test profiles, and runtime helpers.
gold/metadata.yaml, gold/patches/	Reference implementation metadata and per-repository patches.
hidden/patches/	Evaluator tests applied during scoring.
oracles/	Hidden-test expectations and scoring manifests.

Repository source trees can be reconstructed from the remotes and revisions in each repos.yaml file. Reference patches and hidden tests are evaluator-side artifacts and must not be exposed to the agent during a benchmark run.

Download

from huggingface_hub import snapshot_download

snapshot_download(
    repo_id="wangbaoyi/WideSWE",
    repo_type="dataset",
    local_dir="wideswe-data",
)

For environment setup and evaluation commands, see the code README.

Citation

@misc{wang2026wideswecodingagentscoordinate,
      title={WideSWE: Can Coding Agents Coordinate Changes Across Repositories?},
      author={Baoyi Wang and Xingliang Wang and Jinyang Wu and Keming Wu and Chen Zhi and Jianwei Yin},
      year={2026},
      eprint={2609.33382},
      archivePrefix={arXiv},
      primaryClass={cs.SE},
      url={https://arxiv.org/abs/2609.33382},
}

Licensing

Repository-derived patches and tests remain subject to the licenses of their respective upstream repositories. Benchmark metadata and harness code may have separate licensing terms in the accompanying code release. Users are responsible for complying with all applicable upstream licenses.