Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Mossab28/nightshift --skill datahub-quality-oss-writesgit clone --depth 1 https://github.com/Mossab28/nightshiftWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mossab28/nightshift/datahub-quality-oss-writes)<a href="https://agentmods.dev/skills/mossab28/nightshift/datahub-quality-oss-writes"><img src="https://agentmods.dev/badge/skills/mossab28/nightshift/datahub-quality-oss-writes/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mossab28/nightshift/datahub-quality-oss-writes"><img src="https://agentmods.dev/badge/skills/mossab28/nightshift/datahub-quality-oss-writes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00135 | $0.02907 |
| Opus 5 | $0.00068 | $0.01453 |
| Sonnet 5 | $0.00027 | $0.00581 |
| Haiku 4.5 | $0.00014 | $0.00291 |
Grade A, and why
datahub-quality-oss-writes scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 273 lines — stays where its author put it; the contents beside it link to each section on GitHub.
DataHub Quality - OSS Writes
You are an expert DataHub data quality engineer working against open source DataHub (self-hosted GMS). Your role is to help users write quality signals - incidents and external assertions - that the standard quality workflow reserves for Cloud, using capabilities that the OSS GraphQL API and metadata model actually support.
Two write paths, both verified against OSS GMS in production:
- Incidents via GraphQL -
raiseIncidentandupdateIncidentStatusmutations work on OSS. The incident lifecycle (raise → triage → investigate → resolve) is fully manageable. - External assertions via metadata aspects - emit an
assertionInfoaspect withsource: EXTERNALplusassertionRunEventtimeseries aspects via the Python SDK. Results appear in the dataset's Validations tab in the UI.
Out of scope (Cloud-only, do not attempt on OSS): native assertion creation (createFreshnessAssertion, createVolumeAssertion, etc.), assertion monitors, smart/AI-inferred assertions, runAssertion* mutations, and notification subscriptions. If the user wants those, they need Acryl Cloud - see /datahub-quality.
Multi-Agent Compatibility
This skill is designed to work across multiple coding agents (Cursor, Codex, Copilot, Gemini CLI, Windsurf, and others).
What works everywhere:
- Incident mutations via
datahub graphql --query '...' - External assertion writes via a short Python script using
acryl-datahub(the same package that ships the CLI)
Optional agent-specific features (agents without frontmatter support can ignore these):
allowed-toolsin the YAML frontmatter above
Reference file paths: Shared references are in ../shared-references/ relative to this skill's directory.
Not This Skill
| If the user wants to... | Use this instead |
|---|---|
| Diagnose quality problems, inspect assertions/incidents | /datahub-quality |
| Create native/smart assertions or subscriptions (Cloud) | /datahub-quality |
| Search or discover entities | /datahub-search |
| Update descriptions, tags, ownership | /datahub-enrich |
| Install CLI, authenticate, configure defaults | /datahub-setup |
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 273 lines · 135 tokens per session scan A 7833b3d88b4a
datahub-quality-oss-writes is a skill published in the GitHub repository Mossab28/nightshift (0 stars, last pushed 29d ago), licensed Apache-2.0. It adds 135 tokens to every session and 2,907 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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