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 rudderlabs/rudder-agent-skills --skill rudder-profiles-understandgit clone --depth 1 https://github.com/rudderlabs/rudder-agent-skillsWrote 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-profiles-understand)<a href="https://agentmods.dev/skills/rudderlabs/rudder-agent-skills/rudder-profiles-understand"><img src="https://agentmods.dev/badge/skills/rudderlabs/rudder-agent-skills/rudder-profiles-understand/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-profiles-understand"><img src="https://agentmods.dev/badge/skills/rudderlabs/rudder-agent-skills/rudder-profiles-understand.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 | $0.00053 | $0.01218 |
| Opus 5 | $0.00026 | $0.00609 |
| Sonnet 5 | $0.00011 | $0.00244 |
| Haiku 4.5 | $0.00005 | $0.00122 |
Grade A, and why
rudder-profiles-understand 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 — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
RudderStack Profiles Project Understanding
Read an existing Profiles project and summarize what it builds, how it resolves identities, and what the latest run produced.
Workflow
- Read project files:
pb_project.yaml— entities, id_types, connection, schema_version, and anyfeature_views(using_idsre-keys output for activation)models/inputs.yaml— input tables, event streams, ID mappingsmodels/profiles.yaml— entity_vars, id_stitcher config, anyentity_cohortmodels (filtered audiences) andfeature_table_modelselections; var_groups scoped withentity_cohort:compute over a cohortmodels/sql_models.yaml(if present) —sql_templateintermediate modelsmodels/profiles-ml.yaml/models/attribution.yaml(if present) — propensity / attribution modelsmodels/optimizations.yaml/models/macros.yaml(if present) — performance flags and reusable macros
- Run
pb show modelsto get the model dependency structure. - Check outputs (if the project has been run; these are profiles-mcp tools the agent calls, not
pbCLI commands):- Call the profiles-mcp tool
initialize_warehouse_connection(<connection_name>)once before anyrun_query()— a hard precondition documented in the MCP tool; skipping it produces "warehouse not initialized". - Call
get_profiles_output_details()for output metadata (output schema, entity/id-graph materials, latestseq_no). - Run targeted SQL for health metrics (see references).
- Identify the latest
seq_noand output tables. Materials are namedMaterial_<model>_<hash>_<seq_no>; pb also maintains stable views (e.g.,<entity>_var_table) repointed at the latest material each run — prefer the view.
- Call the profiles-mcp tool
- Present a summary covering:
- What entity the project resolves and which id_types it uses.
- Which input tables feed data, how IDs map, and which are event streams vs dimensions.
- Which features (entity_vars) are computed, with descriptions.
- Whether the project is discrete or incremental: any entity_var with a
merge:clause (or an id_stitcher / sql_template withrun_type: incremental) makes the project incremental. Call this out — users who don't know their project is incremental are surprised by checkpoint behavior. - Model dependency structure from
pb show models. - Latest run details: seq_no, output schema, output tables.
- Identity resolution health: stitching ratio, over-stitching candidates.
- Read-only graph lenses to offer:
pb audit id_stitcher(interactive viewer),pb show idstitcher-report(pre/post-stitch counts, convergence, largest cluster), andpb show entity-lookup -v <id_value>(one entity's stitched IDs and features by any known ID).
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 · 80 lines · 53 tokens per session scan A 905fbf646f14
rudder-profiles-understand is a skill published in the GitHub repository rudderlabs/rudder-agent-skills (18 stars, last pushed 7d ago), licensed MIT. It adds 53 tokens to every session and 1,218 once invoked, about $0.0003 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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