Agent skill

Open Agreements

open-agreements

Fill standard legal agreement templates (NDAs, cloud service agreements, SAFEs) and produce filled DOCX files. Supports Common Paper, Bonterms, and Y Combinator templates. Use when the user needs to draft a legal agreement, create an NDA, fill a contract template, or generate a SAFE. Includes lawyer-reviewed practice guides; see openagreements.org/editors.

Document editing & MCPTemplatesPractice guidesMCP server
✓ Security reviewedApache-2.03 package files

Instructions

SKILL.md

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open-agreements

Fill standard legal agreement templates and produce filled DOCX files.

Route to the narrowest skill

Use open-agreements as the hub when a request spans agreement types, starts with template discovery, or does not yet identify a specific agreement. When the request is precise, route to the narrowest spoke:

User’s task Route to
NDA, confidentiality agreement, mutual or one-way NDA nda
SaaS agreement, MSA, cloud contract, order form, pilot agreement cloud-service-agreement
Consulting contract, contractor agreement, services agreement, SOW services-agreement
Offer letter, employment agreement, PIIA, employee onboarding documents employment-contract
DPA, GDPR addendum, HIPAA BAA, data-processing or AI addendum data-privacy-agreement
YC SAFE, valuation cap, discount, MFN, or pro-rata side letter safe
NVCA or Series A financing documents venture-financing
Explain non-compete or restrictive-covenant law non-compete-contract-explainer
Explain U.S. state consumer-privacy law data-privacy-law-explainer

The spoke names are routing targets, not separate brands. They install from the same open-agreements/open-agreements bundle. Keep this hub as the fallback for mixed or ambiguous agreement work.

Lawyer-reviewed practice guides

OpenAgreements practice guides are lawyer-reviewed. Learn about the editors at <https://openagreements.org/editors>. Third-party standard forms retain their own authorship and license provenance.

Activation

Use this skill when the user wants to:

  • Draft an NDA, confidentiality agreement, or cloud service agreement
  • Generate a SAFE (Simple Agreement for Future Equity) for a startup investment
  • Fill a legal template with their company details
  • Generate a filled DOCX from a standard form

Execution — MCP Tools (Preferred)

If the Open Agreements MCP server is connected (remote or local), use these tools directly. This is the preferred path — no CLI or Node.js needed.

Remote MCP URL: https://openagreements.org/api/mcp

Available MCP Tools

Tool Purpose
list_templates List available templates as a paginated compact catalog (template_id, display_name, category, description, field_count, priority_field_count). Pages with cursor + limit (default 25, max 100).
get_template Get full field metadata for a specific template
fill_template Fill a template with values and return a downloadable DOCX

MCP Workflow

  1. Discover templates: Call list_templates (returns a compact, paginated catalog — page with cursor + limit until next_cursor is null). If you know the topic ahead of time, prefer search_templates over a full catalog walk. If user asked for a specific type (e.g. “NDA”), identify the right template from the list.
  2. Get field details: Call get_template with the chosen template_id to get full field definitions (name, type, required, section, description, default).
  3. Collect field values: Ask the user for values based on the field definitions. Use defaults where the user doesn’t specify.
  4. Fill template: Call fill_template with the template ID and values. Returns a download URL for the DOCX.
  5. User reviews document: Present the download link. Wait for the user to confirm the document looks good.

Confirm-before-signing fields (statutory compliance representations)

A few templates have boolean fields that recite a past statutory-compliance fact someone must actually have performed (e.g. “the required advance notice was given before signing”). Their get_template description begins with CONFIRM-BEFORE-SIGNING, and they default to false.

  • You MUST ask the human to confirm the fact actually happened before setting one of these fields to true. Setting it true asserts a real-world fact; do not infer it from context.
  • When such a field is left false (unconfirmed) and the clause applies, the filled DOCX is not broken — the recital renders followed by a yellow [CONFIRM before signing: …] bracket, and a matching yellow notice appears on page one listing each item still needing confirmation. Tell the user these yellow brackets must be confirmed and deleted before the agreement is signed.
  • Once the human confirms, set the field to true and the document renders clean (no bracket, no page-one notice).

Execution — CLI (Fallback)

If no MCP server is connected, fall back to the CLI.

Step 1: Detect runtime

if command -v open-agreements >/dev/null 2>&1; then
  echo "GLOBAL"
elif command -v node >/dev/null 2>&1; then
  echo "NPX"
else
  echo "PREVIEW_ONLY"
fi
  • GLOBAL: Use open-agreements directly.
  • NPX: Use npx -y open-agreements@0.7.4 as prefix. Always pin the version — never use @latest to avoid pulling unexpected updates.
  • PREVIEW_ONLY: No Node.js. Generate markdown preview only.

Step 2: Discover templates

open-agreements list --json

Parse the items array. Each item has name, description, license, source_url, source, and fields.

Step 3: Help user choose, collect values, fill

Same as MCP workflow steps 2-5, but write values to /tmp/oa-values.json and run:

open-agreements fill <template-name> -d /tmp/oa-values.json -o <output-name>.docx

Clean up: rm /tmp/oa-values.json

Source Code and Audit

Open Agreements is fully open source (Apache-2.0 license). Review the complete source before installing:

All template field definitions and fill logic are auditable in the repository.

A note on versions

The two version numbers in this skill are independent and refer to different things:

  • Skill version (in this file’s frontmatter, currently 0.2.3) — versions the skill documentation itself.
  • npm package version (currently 0.7.4) — the version of the upstream open-agreements npm package this skill recommends pinning. Check npm view open-agreements version for the latest.

A newer skill version means the documentation was updated. A newer npm package version means the underlying tool was updated. They are not synchronized.

Install-Time vs Runtime Network Behavior

Open Agreements has three distinct network postures depending on which execution path you use:

Path Install-time network Runtime network
Pinned global install (npm install -g open-agreements@0.7.4) One-time fetch from registry.npmjs.org None for list/fill.
Pinned npx (npx -y open-agreements@0.7.4) Fetch from registry.npmjs.org on first run, cached afterward Same as above
Remote MCP (https://openagreements.org/api/mcp) None Template contents and any field values are sent to openagreements.org. Use only if you accept transmitting these values to the hosted service.

Use the local CLI path (global or npx) if you need guaranteed offline behavior with no third-party data transfer.

Offline / Pinned Installation

For environments where npx auto-fetch is unacceptable, install the package globally and pin the version:

# Install a specific pinned version globally (one-time)
npm install -g open-agreements@0.7.4

# Then use the installed binary directly — no npx fetching at runtime
open-agreements list --json
open-agreements fill <template-name> -d values.json -o output.docx

Before upgrading, review the changelog: https://github.com/open-agreements/open-agreements/blob/main/CHANGELOG.md

Pin the version even when using npx

Even with npx, always pin the version:

npx -y open-agreements@0.7.4 list --json

Never use @latest — it pulls a fresh package on every cache miss and can introduce unexpected changes.

Shared Execution Reference

For the full template-filling workflow (applicable to all agreement skills), see template-filling-execution.md.

Notes

  • All templates produce Word DOCX files that preserve original formatting
  • Templates are licensed by their respective authors (CC BY 4.0, CC0, or CC BY-ND 4.0)
  • External templates (CC BY-ND 4.0, e.g. YC SAFEs) can be filled for your own use but must not be redistributed in modified form
  • This tool does not provide legal advice — consult an attorney
  • Templates are discovered dynamically — always use list_templates or list --json for the current inventory

Feedback

If this skill helped, star us on GitHub: https://github.com/open-agreements/open-agreements On ClawHub: clawhub star open-agreements/open-agreements