crestapps-core-ai-markdown

crestapps-core-ai-markdown is a skill for Claude Code, Codex from CrestApps/CrestApps.AgentSkills. It costs 26 tokens per session (484 once invoked), scanned A, original, MIT.

A Markdown text normalizer for CrestApps.Core AI document and retrieval systems. It removes HTML, reads Markdown structure, extracts plain text, and cleans up spacing and titles.

In plain words
What is it for?
Use it when registering Markdown-aware text cleanup in CrestApps.Core AI services, including document processing and retrieval-augmented generation workflows.
Why use it?
It makes Markdown documents more consistent before they are split into passages and used for AI search or retrieval.

Skill for Claude CodeCodex

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

Good fit Use it when registering Markdown-aware text cleanup in CrestApps.Core AI services, including document processing and retrieval-augmented generation workflows.

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Install with agentmods
npx agentmods add skills/crestapps/crestapps.agentskills/crestapps-core-ai-markdown
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 CrestApps/CrestApps.AgentSkills --skill crestapps-core-ai-markdown
Clone the repo
git clone --depth 1 https://github.com/CrestApps/CrestApps.AgentSkills

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 crestapps-core-ai-markdown

README.md
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Your own site
<a href="https://agentmods.dev/skills/crestapps/crestapps.agentskills/crestapps-core-ai-markdown"><img src="https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-ai-markdown/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 crestapps-core-ai-markdown

Your own site · 80×15
<a href="https://agentmods.dev/skills/crestapps/crestapps.agentskills/crestapps-core-ai-markdown"><img src="https://agentmods.dev/badge/skills/crestapps/crestapps.agentskills/crestapps-core-ai-markdown.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 484 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
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 $0.00026 $0.00484
Opus 5 $0.00013 $0.00242
Sonnet 5 $0.00005 $0.00097
Haiku 4.5 $0.00003 $0.00048

Measured 9d ago against content hash 14568c963d85, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

crestapps-core-ai-markdown 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 9d 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/crestapps-core/skills/crestapps-core-ai-markdown/SKILL.md · 54 lines

How it starts

The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CrestApps.Core AI Markdown - Prompt Templates

Normalize Markdown for AI

You are a CrestApps.Core expert. Generate code and guidance for Markdown-aware text normalization used by CrestApps.Core document-processing and RAG workflows.

Guidelines

  • Reference the standalone CrestApps.Core.AI.Markdown package when Markdown-aware normalization is needed.
  • Call AddMarkdown() on CrestAppsAISuiteBuilder, or call AddCoreAIMarkdown() directly on IServiceCollection.
  • Registration adds MarkdownAITextNormalizer as the singleton IAITextNormalizer.
  • The normalizer delegates content, chunking, and title cleanup to RagTextNormalizer.
  • It strips HTML, parses Markdown through Microsoft.Extensions.DataIngestion.Markdig, and extracts plain text before normalizing whitespace.

Register Markdown Support

builder.Services.AddCrestAppsCore(crestApps => crestApps
    .AddAISuite(ai => ai
        .AddMarkdown()
        .AddDocumentProcessing(documentProcessing => documentProcessing
            .AddEntityCoreStores()
            .AddOpenXml()
            .AddPdf())));

For direct service registration:

builder.Services.AddCoreAIMarkdown();

Register Markdown after the base AI services when replacing their default IAITextNormalizer.

Normalization Behavior

Operation MarkdownAITextNormalizer method Behavior
Document content NormalizeContentAsync HTML stripping, Markdown parsing, text extraction, whitespace cleanup
Retrieval chunks NormalizeAndChunkAsync Markdown parsing followed by token-aware chunking
Titles NormalizeTitle HTML stripping and whitespace cleanup

The default chunker uses the gpt-4o tokenizer with 500 tokens per chunk and 50 overlapping tokens. If Markdig encounters an unsupported inline type, the normalizer uses its built-in plain-text fallback instead of failing the ingestion flow.

Use with Document Processing

AddMarkdown() complements AddDocumentProcessing(...); it does not register document stores, upload endpoints, PDF readers, or Office readers. Add those separately according to the formats and storage provider the application needs.

Read the full file on GitHub · 54 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. 9d ago First seen · 54 lines · 26 tokens per session scan A 14568c963d85

Subscribe to this mod's changes

crestapps-core-ai-markdown is a skill published in the GitHub repository CrestApps/CrestApps.AgentSkills (13 stars, last pushed 11d ago), licensed MIT. It adds 26 tokens to every session and 484 once invoked, about $0.0001 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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