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 CrestApps/CrestApps.AgentSkills --skill crestapps-core-ai-markdowngit clone --depth 1 https://github.com/CrestApps/CrestApps.AgentSkillsWrote 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/crestapps/crestapps.agentskills/crestapps-core-ai-markdown)<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.
<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>- NVIDIA SkillSpector pass
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 | $0.00026 | $0.00484 |
| Opus 5 | $0.00013 | $0.00242 |
| Sonnet 5 | $0.00005 | $0.00097 |
| Haiku 4.5 | $0.00003 | $0.00048 |
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.
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.Markdownpackage when Markdown-aware normalization is needed. - Call
AddMarkdown()onCrestAppsAISuiteBuilder, or callAddCoreAIMarkdown()directly onIServiceCollection. - Registration adds
MarkdownAITextNormalizeras the singletonIAITextNormalizer. - 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.
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.
- 9d ago First seen · 54 lines · 26 tokens per session scan A 14568c963d85
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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