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 metabase/agent-skills --skill metabase-representation-formatgit clone --depth 1 https://github.com/metabase/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/metabase/agent-skills/metabase-representation-format)<a href="https://agentmods.dev/skills/metabase/agent-skills/metabase-representation-format"><img src="https://agentmods.dev/badge/skills/metabase/agent-skills/metabase-representation-format/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/metabase/agent-skills/metabase-representation-format"><img src="https://agentmods.dev/badge/skills/metabase/agent-skills/metabase-representation-format.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 7 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 4 Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
- medium MCP Rug Pull · line 12 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 81 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 91 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 94 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 102 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 105 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00098 | $0.02241 |
| Opus 5.5 | $0.00039 | $0.00896 |
| Sonnet 5.5 | $0.00020 | $0.00448 |
| Haiku 4.5 | $0.00010 | $0.00224 |
Grade A, and why
metabase-representation-format 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 yesterday.
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 — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Metabase Representation Format
Metabase represents user-created content as a tree of YAML files. Each file is one entity (a collection, card, dashboard, etc.). The format is portable across Metabase instances: numeric database IDs are replaced with human-readable names and entity IDs.
The format is defined by a spec bundled alongside this file as spec.md (upstream source: the @metabase/representations npm package). The same package ships a CLI (npx @metabase/representations validate-schema) that validates a tree of YAML files against the format.
Entities
The format defines 14 entity types.
| Entity | SerDes Model | Description |
|---|---|---|
| Collection | Collection |
Folder-like container for organizing content. Hierarchy via parent_id. Namespaces: null (main), "snippets", "transforms", "data-actions", "data-apps". |
| Card | Card |
Question, model, or metric. Holds an MBQL or native dataset_query. Display types: table, bar, line, pie, scalar, etc. Card types: "question", "model", "metric". |
| Dashboard | Dashboard |
Grid layout (24 columns) of cards with filter parameters and optional tabs. Contains dashcards array for card placement and parameters array for filter controls. |
| Document | Document |
Rich text page using ProseMirror AST. Can embed cards via cardEmbed nodes and link to entities via smartLink nodes. |
| Segment | Segment |
Saved filter definition scoped to a table. Definition is a pMBQL query with a single stage containing only source-table and filters. |
| Measure | Measure |
Saved aggregation definition scoped to a table. Definition is a pMBQL query with a single stage containing only source-table and exactly one aggregation. |
| Snippet | NativeQuerySnippet |
Reusable SQL fragment referenced in native queries via {{snippet: Name}}. |
| Transform | Transform |
Materializes query or Python script results into a database table. Source is either MBQL/native query or Python script. |
| TransformTag | TransformTag |
Label for categorizing transforms. Built-in types: "hourly", "daily", "weekly", "monthly", or null for custom. |
| TransformJob | TransformJob |
Scheduled job (cron) that executes transforms matching specific tags. |
| TransformTest | TransformTest |
Runs a transform against test inputs and checks its output against expectations. Stored next to its transform: collections/transforms/{transform_slug}/{test_slug}.yaml. |
| PythonLibrary | PythonLibrary |
Shared Python source file available to Python-based transforms. |
| Action | Action |
Writes to a database. type is "query" (parameterized native SQL); "implicit" and model_id are deprecated. Without a model_id it lives in the data-actions namespace (its root or a data actions collection) or in a data app's collection, set by collection_id; data apps run only those. Exactly one of the nested query and implicit arrays holds the definition its type names; the other is []. |
| Data App | DataApp |
A custom React app that runs inside Metabase, in data_apps/<slug>/: a data_app.yaml manifest (with serdes/meta [{model: DataApp}], and slug equal to the directory name), its built bundle beside it, and a root Collection of the data-apps namespace under collections/data_apps/ holding the Cards and Actions it runs. |
What ships with it
2 files 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.
- yesterday Changed · -2 tokens per session 3bf0bd92ea8a
- 17d ago Changed 4e23e5796b44
- 22d ago Changed · +4 lines · +8 tokens per session 606750a510f4
- 1mo ago First seen · 107 lines · 92 tokens per session scan A b0a6ad49aabf
metabase-representation-format is a skill published in the GitHub repository metabase/agent-skills (53 stars, last pushed today), licensed MIT. It adds 98 tokens to every session and 2,241 once invoked, about $0.0004 per session on Opus 5.5. 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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