dabsLabs/harness-adapter-corpus

Harness Adapter Corpus

Outcome-gated agent session trajectories from one operator's real infrastructure work, published as training data for harness adapters — small LoRA adapters that make a coding-agent harness more efficient, following the Hugging Face harness-adapters recipe. Every record ties a real session to a verifiable outcome: a governance record that landed and passed its schema gate, or a commit inside the session's worktree window.

4,193 trajectories · 4,017 outcome-verified · 2026-07-06 .. 2026-11-08

Dataset structure

Three configs, one per source surface. Each line is one session trajectory:

{
  "id": "dsh-3f9c2a1b",
  "family": "session-trajectory",
  "source_surface": "dsh",
  "source_ref": "session-store-relative-path",
  "messages": [
    {"role": "user", "content": "..."},
    {"role": "assistant", "tool_calls": [...]},
    {"role": "tool", "content": "..."}
  ],
  "outcome": {"gate": "ddr-landed", "verdict": "pass",
               "evidence": "the governance record exists in the landed set"},
  "difficulty": "high"
}

• messages are the real session turns (user requests, assistant replies with tool calls, tool results), clipped at 6,000/4,000 characters, max 200 messages per trajectory.
• outcome.verdict is pass for 4,017 records; the remaining 176 are held with their failing evidence — useful negatives for reward shaping.
• Thinking parts, mount notices and credential-pin events are dropped.

Loading

from datasets import load_dataset

ds = load_dataset("dabsLabs/harness-adapter-corpus", "omp-macbook")

Provenance

config	records	source	period
dsh-studio	1,726	DSH agent sessions, Mac Studio	2026-10-22 .. 2026-11-08
omp-studio	260	OMP agent sessions, Mac Studio (post-trim remnant)	2026-10-25 .. 2026-11-07
omp-macbook	2,207	OMP agent sessions, MacBook Pro (the pre-trim history)	2026-07-06 .. 2026-11-06

Session stores were inventoried read-only before extraction (3,674 DSH transcripts, 4,553 OMP files); substantive sessions (>20 KB) were selected stratified across size terciles.

Redaction and sensitive information

Two layers, applied before upload:

1. safeagents scrub (the harness-hub tooling) — credentials, secret-named environment values, emails, home directories and public IP addresses redacted in place; records are kept with values masked so the trajectory shape survives.
2. gitleaks as the drop-gate, iterated to zero findings — records that still tripped a secret detector were dropped, never published: 69 from the Studio sources, 614 from the MacBook source.

Report a leak: open a Discussion on this dataset or contact the owners through the dabsLabs org — confirmed leaks are pulled immediately and the affected records re-scrubbed.

Out-of-scope uses

Not a benchmark; not instruction-tuning data for public assistants. The sessions are one operator's infrastructure operations (Kubernetes, GitOps, CI, governance records) — general coding assistants will not find web-app-style tasks here.

Limitations

• Outcome gates are date-correlated, not causal. A session counted as DDR-landed may correlate with a record the operator landed the same day. Treat the OMP gates as weak supervision; the DSH worktree-commit subset is the sharper signal.
• The OMP period coverage is complete for what survives at the source: the Studio-side store was trimmed on 2026-10-26, and the MacBook-side store supplied the pre-trim history. Earlier sessions were deleted at the source, not by us.
• Tool results are clipped; very long sessions are truncated at 200 messages.
• Assistant turns come from several models over the period (a local fleet); no per-model attribution is included.

License

The dataset files are released under CC-BY-4.0. The underlying session content is the operator's own work product on his own infrastructure.

Citation

@misc{dabslabs_harness_adapter_corpus_2026,
  author = {dabsLabs},
  title = {Harness Adapter Corpus: outcome-gated agent session trajectories},
  year = {2026},
  howpublished = {\\url{https://huggingface.co/datasets/dabsLabs/harness-adapter-corpus}}
}