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 agentmods add skills/nirholas/three.ws/llms-txt-extraction-guidenpx skills add nirholas/three.ws --skill llms-txt-extraction-guidegit clone --depth 1 https://github.com/nirholas/three.wsWrote 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/nirholas/three.ws/llms-txt-extraction-guide)<a href="https://agentmods.dev/skills/nirholas/three.ws/llms-txt-extraction-guide"><img src="https://agentmods.dev/badge/skills/nirholas/three.ws/llms-txt-extraction-guide.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00061 | $0.00985 |
| Opus 5 | $0.00030 | $0.00492 |
| Sonnet 5 | $0.00012 | $0.00197 |
| Haiku 4.5 | $0.00006 | $0.00098 |
Grade A, and why
llms-txt-extraction-guide scanned grade A with 1 finding 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 yesterday.
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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl https://llm.energy/api/extract?url=https://docs.chat.sperax.io How it starts
The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.
llms.txt Documentation Extraction Guide
llm.energy extracts documentation from websites implementing the llms.txt and install.md standards. It transforms raw documentation into structured, agent-ready formats optimized for LLMs.
Standards
| Standard | Purpose | Specification |
|---|---|---|
| llms.txt | Machine-readable documentation | llmstxt.org |
| install.md | LLM-executable installation instructions | installmd.org |
What It Does
Input: https://docs.chat.sperax.io
│
▼
Auto-detects:
├── /llms.txt (summary)
├── /llms-full.txt (full docs)
└── /install.md (setup instructions)
│
▼
Output:
├── Individual markdown files per section
├── Single concatenated document
├── JSON structured output
└── MCP-compatible tool responses
Quick Start
Web Interface
Visit llm.energy, paste a URL, and extract.
CLI
npx @llm-energy/cli extract https://docs.chat.sperax.io
MCP Server
{
"mcpServers": {
"llm-energy": {
"command": "npx",
"args": ["@llm-energy/mcp-server"]
}
}
}
MCP Tools
| Tool | Description |
|---|---|
extractDocs |
Extract llms.txt from a URL |
extractFull |
Extract llms-full.txt (complete documentation) |
extractInstall |
Extract install.md (setup instructions) |
detectStandards |
Check which standards a site supports |
batchExtract |
Extract from multiple URLs at once |
REST API
# Extract documentation
curl https://llm.energy/api/extract?url=https://docs.chat.sperax.io
# Detect standards support
curl https://llm.energy/api/detect?url=https://docs.chat.sperax.io
# Batch extract
curl -X POST https://llm.energy/api/batch \
-d '{"urls": ["https://docs.chat.sperax.io", "https://docs.aave.com"]}'
Export Formats
| Format | Best For |
|---|---|
| Markdown | Human reading, GitHub, documentation sites |
| JSON | Programmatic consumption, databases |
| Plain text | LLM context windows, RAG pipelines |
| Split files | Individual section storage |
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.
- yesterday First seen · 143 lines · 61 tokens per session scan A 004bf4e50eae
llms-txt-extraction-guide is a skill published in the GitHub repository nirholas/three.ws (110 stars, last pushed today), licensed Apache-2.0. It adds 61 tokens to every session and 985 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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