Individual skill
data-contract
Define a data contract between a producer and consumers of a dataset/event/API. Use when asked to write a data contract, define a schema agreement, set data SLAs, or stop a producer from silently breaking downstream consumers. Produces a contract — schema with types & constraints, semantics, quality SLAs (freshness/completeness/validity), ownership, versioning & breaking-change policy, and a change process.
plugins/pm-dataeng/skills/data-contract/SKILL.md
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- Last checked
- Nov 9, 2026
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# Data Contract Skill
Most data outages are a producer changing a column without telling anyone downstream. A data contract
fixes that: it's an explicit, versioned agreement on the **schema, semantics, and quality guarantees** of
a dataset/event/stream, with an owner and a breaking-change policy. This skill writes one, so producers
and consumers share a single source of truth and changes can't silently break pipelines.
## Required Inputs
Ask for these only if they aren't already provided:
- **The data asset** — the table, event, topic, or API, and what it represents.
- **Producer & consumers** — who owns it, who depends on it.
- **Schema** — fields, types, and which are required; the semantics of the tricky ones.