outlines

outlines is a skill for Claude Code, Codex from Heldinhow/hermes-agent-skills. It costs 50 tokens per session (4,041 once invoked), scanned B, original, no licence file.

A library for generating text, JSON, XML, and code that follow a required structure. It also supports type-safe output models, local language models, and faster generation.

In plain words
What is it for?
Use it to generate valid structured data or code, define output shapes with Pydantic, run local models, or improve generation speed.
Why use it?
It helps prevent invalid or badly structured output when an application needs responses in a specific format.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to generate valid structured data or code, define output shapes with Pydantic, run local models, or improve generation speed.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/heldinhow/hermes-agent-skills/outlines
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 Heldinhow/hermes-agent-skills --skill outlines
Clone the repo
git clone --depth 1 https://github.com/Heldinhow/hermes-agent-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 outlines

README.md
[![agentmods](https://agentmods.dev/badge/skills/heldinhow/hermes-agent-skills/outlines/github.svg)](https://agentmods.dev/skills/heldinhow/hermes-agent-skills/outlines)
Your own site
<a href="https://agentmods.dev/skills/heldinhow/hermes-agent-skills/outlines"><img src="https://agentmods.dev/badge/skills/heldinhow/hermes-agent-skills/outlines/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 outlines

Your own site · 80×15
<a href="https://agentmods.dev/skills/heldinhow/hermes-agent-skills/outlines"><img src="https://agentmods.dev/badge/skills/heldinhow/hermes-agent-skills/outlines.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,041 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00050 $0.04041
Opus 5 $0.00025 $0.02021
Sonnet 5 $0.00010 $0.00808
Haiku 4.5 $0.00005 $0.00404

Measured 9d ago against content hash b4424902dcc9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade B, and why

outlines scanned grade B 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 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.

Asks the agent to reveal its instructionsmediumSystem prompt leakage

Directions to print, repeat or translate the system prompt extract configuration the operator did not intend to expose.

# Generate structured output prompt = "Extract user: John Doe, 30 years old, [email protected]"
mlops/inference/outlines/SKILL.md · 656 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

3 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.

  1. 9d ago First seen · 656 lines · 50 tokens per session scan B b4424902dcc9

Subscribe to this mod's changes

outlines is a skill published in the GitHub repository Heldinhow/hermes-agent-skills (2 stars, last pushed 4mo ago), with no licence file. It adds 50 tokens to every session and 4,041 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (asks the agent to reveal its instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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