---
title: "Outlines - Air Market"
description: "Asking a model for JSON and getting something almost-valid back means writing repair code and retries. Outlines constrains generation so the structure is correct as it is produced. Reach for it when…"
canonical: "https://airmarket.ai/app/outlines"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Outlines

Skill by [Orchestra Research](/@orchestra-research)

# Outlines

Model output that parses every time, not most of the time

## What this does

Asking a model for JSON and getting something almost-valid back means writing repair code and retries. Outlines constrains generation so the structure is correct as it is produced. Reach for it when the model's output feeds straight into code that expects a particular shape.

### Top 3 things it does for you

- Get JSON back that is always valid
- Define the shape you want with a Pydantic model
- Run structured generation on a local model

## Information

**Outlines at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Orchestra Research](/@orchestra-research) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Version | 1.0.0 |
| Size | 65 KB |
| Licence | MIT |
| Repository | [orchestra-research/ai-research-skills](https://github.com/orchestra-research/ai-research-skills/tree/28f2d29236f2bade2eb92cadb2585189589a5828/16-prompt-engineering/outlines) |
| GitHub stars | 11,987 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Outlines and flagged nothing. AIR's verdict: **safe**.

**What Outlines's check was run against**

|  |  |
| --- | --- |
| Commit | 28f2d29236f2bade2eb92cadb2585189589a5828 |
| Content hash | b7e5765da873d029ecfc0091779111b48a32466fcf2bb70a14f3c21befc8bd61 |
| Files read | [Browse the files at this exact commit](https://github.com/orchestra-research/ai-research-skills/blob/28f2d29236f2bade2eb92cadb2585189589a5828/16-prompt-engineering/outlines/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Outlines](/security/outlines)

## About Outlines

Outlines is dottxt.ai's structured generation library. It guarantees valid JSON, XML or code structure during generation, rather than checking after the fact.

You describe the output you want with Pydantic models for type-safe results, and it supports local models through Transformers and vLLM while keeping inference speed in view.

## What's inside

- SKILL.md - instructions
- references/backends.md - reference
- references/examples.md - reference
- references/json_generation.md - reference

## Questions

### Is Outlines safe to install?

AIR scanned this exact version of Outlines and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 28f2d29236f2, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/outlines.

### How do I install Outlines?

Open https://airmarket.ai/app/outlines on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/orchestra-research/ai-research-skills/tree/28f2d29236f2bade2eb92cadb2585189589a5828/16-prompt-engineering/outlines. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Orchestra Research](/@orchestra-research)

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Canonical URL: <https://airmarket.ai/app/outlines>