ClaudSkills / Engineering / workflow-orchestration

Output Contract Enforcer

Q: What is a Claude Code skill and how does the Output Contract Enforcer skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Output Contract Enforcer is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: workflow-orchestration · Last updated: 2026-06-08

ai:agent

Validates that a DAG node's output matches its declared JSON schema before passing to downstream nodes. The glue that makes multi-agent DAGs reliable. Use when checking output contract compliance, generating validation schemas from descriptions, or debugging contract mismatches between nodes. Activate on "validate output", "output contract", "schema validation", "contract mismatch", "output doesn't match". NOT for content quality assessment (use dag-quality), skill grading (use skill-grader), or general JSON schema work outside DAG context.

About this skill (catalog notes)

Output Contract Enforcer includes pricing or quota commentary; at least one code block. The SKILL.md runs to about 743 words, in the catalog's typical mid-range.

Original author: curiositech
Indexed lastmod: 2026-06-08
Catalog position: Engineering · workflow-orchestration
Indexed related skills: 10

How Output Contract Enforcer fits the catalog

Output Contract Enforcer sits in the Engineering category under the workflow-orchestration sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Validates that a DAG node's output matches its declared JSON schema before passing to downstream nodes. The glue that makes multi-agent DAGs reliable. Without this, downstream nodes receive unpredictable input and the DAG breaks.

What this skill does

Output Contract Enforcer is a community-contributed Claude Code skill in the workflow-orchestration sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/output-contract-enforcer/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when checking output contract compliance, generating validation schemas from descriptions, or debugging contract mismatches between nodes. Activate on "validate output", "output contract", "schema validation", "contract mismatch", "output doesn't match".

Who uses this skill

The Output Contract Enforcer Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 94,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/output-contract-enforcer
curl -L https://claudskills.com/skills/output-contract-enforcer/SKILL.md \
  -o ~/.claude/skills/output-contract-enforcer/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/output-contract-enforcer/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/output-contract-enforcer/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\output-contract-enforcer\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Output Contract Enforcer Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/output-contract-enforcer/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Output Contract Enforcer skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Output Contract Enforcer skill?

Use Output Contract Enforcer when your Claude Code task falls under the Engineering category — specifically in the workflow orchestration area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Output Contract Enforcer" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Output Contract Enforcer skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Output Contract Enforcer is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/curiositech/port-daddy/blob/HEAD/skills/output-contract-enforcer/SKILL.md
Author: curiositech

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

curiositech. (2026). Output Contract Enforcer [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/output-contract-enforcer/

BibTeX

@misc{output-contract-enforcer-2026,
  author    = {curiositech},
  title     = {Output Contract Enforcer [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/output-contract-enforcer/}
}

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