Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/rudderlabs/rudder-agent-skillsnpx agentmods add skills/rudderlabs/rudder-agent-skills/rudder-data-catalogWrote 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/rudderlabs/rudder-agent-skills/rudder-data-catalog)<a href="https://agentmods.dev/skills/rudderlabs/rudder-agent-skills/rudder-data-catalog"><img src="https://agentmods.dev/badge/skills/rudderlabs/rudder-agent-skills/rudder-data-catalog/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/rudderlabs/rudder-agent-skills/rudder-data-catalog"><img src="https://agentmods.dev/badge/skills/rudderlabs/rudder-agent-skills/rudder-data-catalog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00041 | $0.03087 |
| Opus 5 | $0.00020 | $0.01543 |
| Sonnet 5 | $0.00008 | $0.00617 |
| Haiku 4.5 | $0.00004 | $0.00309 |
Grade A, and why
rudder-data-catalog 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 12d 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 — 458 lines — stays where its author put it; the contents beside it link to each section on GitHub.
RudderStack Data Catalog Management
This skill teaches how to create and manage the building blocks of instrumentation: events, properties, categories, and custom types.
Recommended Workflow
When adding or editing catalog resources, author bottom-up (dependencies first) then validate and apply. The referencing order is strict — an event can't reference a property URN until that property exists.
digraph data_catalog_workflow {
rankdir=TB;
"1. Custom types (reusable shapes)" [shape=box];
"2. Properties (vocabulary)" [shape=box];
"3. Categories (grouping)" [shape=box];
"4. Events (reference all of the above)" [shape=box];
"rudder-cli validate -l ./" [shape=box];
"Errors?" [shape=diamond];
"Fix references / URNs / type config" [shape=box];
"rudder-cli apply --dry-run -l ./" [shape=box];
"Diff matches intent?" [shape=diamond];
"rudder-cli apply -l ./" [shape=box];
"Done" [shape=doublecircle];
"1. Custom types (reusable shapes)" -> "2. Properties (vocabulary)";
"2. Properties (vocabulary)" -> "3. Categories (grouping)";
"3. Categories (grouping)" -> "4. Events (reference all of the above)";
"4. Events (reference all of the above)" -> "rudder-cli validate -l ./";
"rudder-cli validate -l ./" -> "Errors?";
"Errors?" -> "Fix references / URNs / type config" [label="yes"];
"Fix references / URNs / type config" -> "rudder-cli validate -l ./";
"Errors?" -> "rudder-cli apply --dry-run -l ./" [label="no"];
"rudder-cli apply --dry-run -l ./" -> "Diff matches intent?";
"Diff matches intent?" -> "Fix references / URNs / type config" [label="no"];
"Diff matches intent?" -> "rudder-cli apply -l ./" [label="yes"];
"rudder-cli apply -l ./" -> "Done";
}
Why bottom-up: properties reference custom types; events reference properties, categories, and custom types. Creating in the reverse order means every intermediate validate fails on missing references. For the validate → dry-run → apply details (error formats, diff reading, auth prereqs), see the rudder-cli-workflow skill.
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.
- 12d ago First seen · 458 lines · 41 tokens per session scan A 25bf66429433
rudder-data-catalog is a skill published in the GitHub repository rudderlabs/rudder-agent-skills (18 stars, last pushed 7d ago), licensed MIT. It adds 41 tokens to every session and 3,087 once invoked, about $0.0002 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 2026-08-30.
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