Add Dataset Items

Add items to an Opik dataset

An Opik dataset is the set of inputs an example is evaluated against. In this repo each example keeps a canonical source file (e.g. data/eval_cases.json) that a loader reads and inserts into Opik — so dataset items live in two places and must stay in sync.

Reference implementation: use-cases/f1_radio_rag — source data/eval_cases.json, loaded by data.py, inserted by build_dataset in evaluation.py.

When to refuse

You need both:

• A target example (a folder under use-cases/, guides/, etc.) or an explicit dataset name.
• The item content — at minimum the query/input; ideally the expected output and any context fields the metrics need.

If either is missing, ask one short question. Do not fabricate dataset rows — bad data silently corrupts every downstream eval and optimization run.

Step 1 — Match the existing item schema

Read the example's source data file and copy the exact key set of existing items. Opik dataset items are free-form dicts, but the evaluation task and metrics read specific keys. For f1_radio_rag each item is:

{
  "query": "What tyre problems did drivers report?",
  "expected_output": "Verstappen reported front-left graining ...",
  "messages": ["VER: Front-left is graining ...", "..."],
  "assertions": ["Reports the front-left graining ...", "..."]
}

New items must provide every key the task/metrics consume. Mismatched or missing keys throw at eval time (KeyError in the task) — not at insert time.

Step 2 — Append to the canonical source file

Add the new item(s) to the source JSON (the SSOT), preserving formatting. This is the change that gets committed and reviewed. Keep entries grounded and self-consistent (the expected output must actually follow from the provided context).

Step 3 — Sync to Opik

Insert is idempotent: Opik content-hashes each item, so re-inserting the whole file only adds genuinely new rows. The simplest sync is re-running the example's dataset builder.

import opik

client = opik.Opik()  # env-driven; never hardcode workspace/keys
dataset = client.get_or_create_dataset(name=DATASET_NAME)
dataset.insert(items)  # items = the full list from the source file; identical rows are deduped

For f1_radio_rag, build_dataset(client, load_eval_cases()) does exactly this, and uv run f1rag eval calls it as part of the eval — so adding to data/eval_cases.json and running eval is enough; no separate insert step needed.

Step 4 — Dry-run / credentials

dataset.insert needs OPIK_API_KEY + OPIK_WORKSPACE. Without them, the example runs in DRY_RUN and prints what it would create instead of calling Opik (see the repo convention in AGENTS.md). Verify the new items appear in the dry-run output:

cd use-cases/f1_radio_rag && uv run f1rag eval   # [DRY RUN] lists the dataset items it would create

Verify

• The new item(s) show up in the dry-run listing (or in the Opik UI dataset when creds are set).
• The item's keys match what the eval task and metrics read — otherwise eval throws later.
• The source file is still valid JSON (jq . data/eval_cases.json).