fabric-ontology

fabric-ontology is a skill for Claude Code from wardawgmalvicious/agent-config. It costs 212 tokens per session (2,624 once invoked), scanned A, original, MIT.

A Microsoft Fabric Ontology definition that describes business entities, their properties, and relationships, then connects them to data in OneLake. Microsoft Fabric is Microsoft's cloud data platform, and OneLake is its shared data store.

In plain words
What is it for?
Use it to define entities such as customers and orders, describe how they relate, and bind those definitions to Fabric data. It also supports Git-based management of the ontology files.
Why use it?
It gives people and agents a shared vocabulary for understanding business data. This reduces confusion when different systems use different names for the same concepts.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

Good fit Use it to define entities such as customers and orders, describe how they relate, and bind those definitions to Fabric data. It also supports Git-based management of the ontology files.

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Install with agentmods
npx agentmods add skills/wardawgmalvicious/agent-config/fabric-ontology
Install

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.

Any agent
npx skills add wardawgmalvicious/agent-config --skill fabric-ontology
Clone the repo
git clone --depth 1 https://github.com/wardawgmalvicious/agent-config

Made for: Claude Code.

Wrote 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.

agentmods badge for fabric-ontology

README.md
[![agentmods](https://agentmods.dev/badge/skills/wardawgmalvicious/agent-config/fabric-ontology/github.svg)](https://agentmods.dev/skills/wardawgmalvicious/agent-config/fabric-ontology)
Your own site
<a href="https://agentmods.dev/skills/wardawgmalvicious/agent-config/fabric-ontology"><img src="https://agentmods.dev/badge/skills/wardawgmalvicious/agent-config/fabric-ontology/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.

agentmods 80×15 button for fabric-ontology

Your own site · 80×15
<a href="https://agentmods.dev/skills/wardawgmalvicious/agent-config/fabric-ontology"><img src="https://agentmods.dev/badge/skills/wardawgmalvicious/agent-config/fabric-ontology.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 212 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,624 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00212 $0.02624
Opus 5 $0.00106 $0.01312
Sonnet 5 $0.00042 $0.00525
Haiku 4.5 $0.00021 $0.00262

Measured 2d ago against content hash 15613d8c2bce, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

fabric-ontology 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 2d 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.

skills/fabric/fabric-ontology/SKILL.md · 208 lines

How it starts

The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fabric Ontology (preview): the item, its definition, and its bindings

An ontology is Fabric IQ's shared business vocabulary: entity types (Customer), properties (email), and relationships (Customer places Order), bound to real OneLake data so agents and people reason in the same terms.

Item type name: Ontology — the metadata.type written into .platform, so a Git-synced workspace serializes it as <display name>.Ontology. Git integration lists it under "IQ (preview) items" alongside Plan — not under Data Science or Real-Time Intelligence, which is where people look first.

Everything below is preview, verified against the docs on 2026-09-02. Re-check before relying on a limit; this surface moves.

Not here, deliberately. The ontology graph is provided by Graph in Microsoft Fabric — a separate GraphModel item. GQL, graph-type DDL and executeQuery belong to fabric-graph; this skill only carries the graph constraints that bite at ontology time. Agent configuration belongs to fabric-data-agent (conversational, ≤5 sources) and fabric-operations-agent (autonomous, single-source) — ontology is one source for each of those.

The Git definition layout

Ontology definitions are JSON. Only the first two are required:

<Name>.Ontology/
  .platform                              # metadata.type = "Ontology"
  definition.json                        # REQUIRED, and literally {}
  EntityTypes/{entityTypeId}/
    definition.json                      # the entity type
    DataBindings/{guid}.json             # one file per binding
    Documents/document{n}.json           # {displayText, url}
    Overviews/definition.json            # preview-page widgets
    ResourceLinks/definition.json        # links to a Power BI report
  RelationshipTypes/{relationshipTypeId}/
    definition.json                      # source/target entityTypeId
    Contextualizations/{guid}.json       # binds the relationship to a table

Read the full file on GitHub · 208 lines

Files

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.

Changes

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.

  1. 2d ago Changed 15613d8c2bce
  2. 8d ago First seen · 208 lines · 212 tokens per session scan A 0defa8c4f54f

Subscribe to this mod's changes

fabric-ontology is a skill published in the GitHub repository wardawgmalvicious/agent-config (1 stars, last pushed today), licensed MIT. It adds 212 tokens to every session and 2,624 once invoked, about $0.0011 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 2026-09-04.

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