muapi-blog-header

muapi-blog-header is a skill for Claude Code, Codex from SamurAIGPT/Generative-Media-Skills. It costs 30 tokens per session (715 once invoked), scanned B, original, MIT.

A blog-header image generator for creating a 1200×628 web image from a post topic. It can follow a publication style and an optional main color direction.

In plain words
What is it for?
Use it to create header artwork for blog posts, choosing an editorial, modern, professional, or other specified visual style.
Why use it?
It gives a blog post a purpose-built header image without requiring the author to design one manually.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to create header artwork for blog posts, choosing an editorial, modern, professional, or other specified visual style.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/samuraigpt/generative-media-skills/blog-header
About the project

Generative-Media-Skills is a toolkit that lets AI agents generate, edit, and display images, videos, and audio through the muapi command-line interface. It is for users of Claude Code, Cursor, Gemini CLI, and OpenCode who need multimodal media-generation workflows. The catalogue entries are the skills that expose these media capabilities to coding agents.

SamurAIGPT/Generative-Media-Skills · 25 stars · on GitHub · muapi.ai

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 SamurAIGPT/Generative-Media-Skills --skill blog-header
Clone the repo
git clone --depth 1 https://github.com/SamurAIGPT/Generative-Media-Skills

Made for: Claude Code, Codex.

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 muapi-blog-header

README.md
[![agentmods](https://agentmods.dev/badge/skills/samuraigpt/generative-media-skills/blog-header/github.svg)](https://agentmods.dev/skills/samuraigpt/generative-media-skills/blog-header)
Your own site
<a href="https://agentmods.dev/skills/samuraigpt/generative-media-skills/blog-header"><img src="https://agentmods.dev/badge/skills/samuraigpt/generative-media-skills/blog-header/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 muapi-blog-header

Your own site · 80×15
<a href="https://agentmods.dev/skills/samuraigpt/generative-media-skills/blog-header"><img src="https://agentmods.dev/badge/skills/samuraigpt/generative-media-skills/blog-header.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 715 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 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 Data Exfiltration · line 60
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 60
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
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 $0.00030 $0.00715
Opus 5.5 $0.00012 $0.00286
Sonnet 5.5 $0.00006 $0.00143
Haiku 4.5 $0.00003 $0.00072

Measured 1mo ago against content hash ff7326088a43, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

muapi-blog-header scanned grade B with 2 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 1mo 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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

- For model IDs without a CLI alias yet, fall back to the raw endpoint via `curl -X POST https://api.muapi.ai/api/v1/<endpoint> -H "x-api-key: $MUAPI_API_KEY" -H 'content-type: application/json' -d '{...}'` and poll with

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- For model IDs without a CLI alias yet, fall back to the raw endpoint via `curl -X POST https://api.muapi.ai/api/v1/<endpoint> -H "x-api-key: $MUAPI_API_KEY" -H 'content-type: application/json' -d '{...}'` and poll with
library/visual/blog-header/SKILL.md · 62 lines

How it starts

The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Blog Header

Create a professional, eye-catching blog post header image sized for web (1200×628) with optional title composition guidance.

Inputs

Name Type Required Default Description
topic text yes — The blog post topic or title (e.g. "10 productivity hacks for remote developers").
publication_style text no clean, editorial, modern, professional Visual style matching the blog's brand (e.g. "dark tech blog", "warm lifestyle", "minimalist corporate").
dominant_color text no — Optional primary color direction (e.g. "deep blue", "warm amber", "monochrome").

Steps

Generate a single, publication-quality blog header in one shot — no plan needed unless the user requests variants.

  1. Derive a strong visual metaphor for {{topic}}:
    • Avoid cliché stock photo compositions (handshake, lightbulb alone).
    • Prefer: dynamic flat lay, abstract concept visualization, illustrated scene, or dramatic lifestyle moment.
  2. Build the image prompt:
    • Subject derived from the metaphor above.
    • Style: {{publication_style}}, editorial photography, 16:9 wide, professional blog header, ample negative space on the left side for title text overlay, {{dominant_color}} color palette.
    • Tier: quality.
    • Aspect ratio: 1.91:1 (standard Open Graph / blog hero).
  3. Call muapi image generate (model=gpt-image-2-text-to-image, aspect_ratio=21:9).

Deliverables

Return:

  • The header image asset.
  • Title placement guidance: where to overlay the blog title for best readability.
  • Quick alt-text: SEO-friendly image alt text (1 sentence).

Notes

  • Leave empty space (negative space) intentionally so titles can be overlaid without clashing.
  • If the user uploads an existing brand photo, use muapi image edit to adapt it instead of generating from scratch.
  • For dark-mode blogs, suggest a dark background; for light, keep backgrounds bright.

Trigger Keywords

blog header, blog image, article image, featured image, og image, open graph image, hero image

Read the full file on GitHub · 62 lines

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. 1mo ago First seen · 62 lines · 30 tokens per session scan B ff7326088a43

Subscribe to this mod's changes

muapi-blog-header is a skill published in the GitHub repository SamurAIGPT/Generative-Media-Skills (25 stars, last pushed 28d ago), licensed MIT. It adds 30 tokens to every session and 715 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

mlops-automation

Automate an MLOps project with mise tasks, lefthook hooks, Docker images, GitHub Actions, and MLflow tracking on a SQL backend. Use when adding a task runner, git hooks, CI/CD, or experiment tracking to a working package.

MLOps-Courses/mlops-coding-skills · 58 tokens

mlops-validation

Add the validation layers that gate a merge — ty typing, Ruff linting, pytest coverage, structured logging, and the trivy, pip-audit, and gitleaks scans. Use when hardening code quality or wiring the mise run check task.

MLOps-Courses/mlops-coding-skills · 55 tokens

mlops-prototyping

Structure reproducible Jupyter notebooks with a fixed section layout, hoisted configuration, and leakage-free scikit-learn pipelines. Use when exploring a dataset, training a first model, or preparing a notebook for promotion.

MLOps-Courses/mlops-coding-skills · 50 tokens

mlops-collaboration

Prepare a project for public collaboration — license, code of conduct, docs, branch rulesets, templates, and git-cliff releases. Use when open-sourcing a repository, onboarding contributors, or cutting a tagged release.

MLOps-Courses/mlops-coding-skills · 50 tokens

mlops-observability

Make an ML system a glass box with reproducible runs, MLflow dataset lineage, drift monitoring, alerting, and SHAP explanations. Use when a deployed model needs traceability, monitoring, alerting, or explanation.

MLOps-Courses/mlops-coding-skills · 51 tokens

mlops-industrialization

Convert notebook prototypes into a distributable Python package with a src layout, a domain/io/application split, and validated OmegaConf plus Pydantic configuration. Use when moving code out of notebooks or designing entrypoints.

MLOps-Courses/mlops-coding-skills · 48 tokens