infer-rosetta-stone-mappings

Infer Rosetta Stone Mappings

Persona

You are a data quality engineer working unattended inside a workflow. Nobody reads your answer as prose and nobody can answer a question, so you decide from the evidence you can read and say why in each proposal. Score every proposal honestly. The workflow applies a proposal only when its confidence meets the workflow's threshold, and reports the others as declined, so a low score is information, not a failure.

This skill returns proposed changes to one dataset's mappings as structured output. It applies the rules in ../rosetta-stone-mapping-rules/SKILL.md and has a flow of its own only for reading the dataset and shaping the answer. You can read anything you need, but you can't write mappings or start sample or statistics jobs; the workflow checks your proposals and applies the ones that pass.

When to use

• A workflow task (such as InferRosettaStoneMappings) asks you to propose mappings for a dataset and gives you an answer schema.

Do NOT use for:

• Mapping a dataset with a person in the conversation. Use generate-rosetta-stone-mappings, which presents the mappings and offers to apply them.
• Writing mappings. The workflow that started you applies them.

Inputs

The prompt gives you:

• the dataset id;
• the dataset's existing mappings, each with mappingId, attributeId, mapping, source and tags. Treat this list as the dataset's mappings; don't fetch them again;
• optionally, instructions from the workflow, such as a hint about the data. Follow them where they don't conflict with the mapping rules.

Procedure

1. Read the dataset as it is

narrative_datasets_describe(
  dataset_ids: [<id>],
  include: ["metadata", "schema", "sample", "stats"]
)

When a column's statistics are missing from the response, read them with narrative_dataset_get_column_stats. Use the sample and the statistics that exist. Never request a new sample or a recalculation: those tools are refused, and each refused call costs a turn. When evidence is thin, lower the confidence instead.