What is modifying-theme-json?

A skill for creating, applying, standardizing, auditing, and validating Power BI report themes through the pbir command-line tool.

Use it to change theme colors, copy or apply themes, and check whether a Power BI report theme follows the required standards.

It helps correct inconsistent visual formatting, default themes, and excessive one-off formatting changes across a report.

modifying-theme-json — Skill for Claude Code by data-goblin

About the project

Power BI Agentic Development is a marketplace of skills, plugins, agents, commands, and an MCP server that help coding agents work with Power BI and Microsoft Fabric. It is for creating and managing semantic models, DAX, TMDL, reports, dashboards, workspaces, and deployment processes, with the catalogue entries providing these specialized agent resources.

data-goblin/power-bi-agentic-development · 1,060 stars · on GitHub · data-goblins.com

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 data-goblin/power-bi-agentic-development --skill modifying-theme-json

Clone the repo

git clone --depth 1 https://github.com/data-goblin/power-bi-agentic-development

Made for: Claude Code.

Or install reports, the plugin that ships this one along with the rest of its 5 skills, 4 agents.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/data-goblin/power-bi-agentic-development/modifying-theme-json/github.svg)](https://agentmods.dev/skills/data-goblin/power-bi-agentic-development/modifying-theme-json)

Your own site

<a href="https://agentmods.dev/skills/data-goblin/power-bi-agentic-development/modifying-theme-json"><img src="https://agentmods.dev/badge/skills/data-goblin/power-bi-agentic-development/modifying-theme-json/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/data-goblin/power-bi-agentic-development/modifying-theme-json"><img src="https://agentmods.dev/badge/skills/data-goblin/power-bi-agentic-development/modifying-theme-json.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 92 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,479 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00092	$0.01479
Opus 5.5	$0.00037	$0.00592
Sonnet 5.5	$0.00018	$0.00296
Haiku 4.5	$0.00009	$0.00148

Measured 16d ago against content hash 11d8d4a2007d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

modifying-theme-json 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 16d 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.

plugins/reports/skills/modifying-theme-json/SKILL.md · 142 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

52 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.

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.

16d ago Changed · +2 lines · +4 tokens per session 11d8d4a2007d
1mo ago First seen · 140 lines · 88 tokens per session scan A 7964c573cbcc

Subscribe to this mod's changes

modifying-theme-json is a skill published in the GitHub repository data-goblin/power-bi-agentic-development (1,060 stars, last pushed 2d ago), licensed GPL-3.0. It adds 92 tokens to every session and 1,479 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.

Analytics and metrics Design and UX agentic-development business-intelligence microsoft-fabric power-bi reporting semantic-model

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