sync-contracts

sync-contracts is a command for Claude Code from alinaqi/maggy. It costs 0 tokens per session (1,913 once invoked), scanned A, original, MIT.

A command that updates workspace contracts, which are written descriptions of APIs and shared data types. It performs a focused check instead of re-analyzing the whole project.

In plain words
What is it for?
Updating or validating contracts after changing API endpoints or shared types, checking for differences, and running lightweight post-commit synchronization in a monorepo, a repository containing multiple related projects or packages.
Why use it?
It keeps documentation such as CONTRACTS.md consistent after interface changes while reducing the time needed for routine updates.

Command for Claude Code

Written for Claude Code: a Claude Code command (commands/*.md).

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.

agentmods
npx agentmods add commands/alinaqi/maggy/sync-contracts
Clone the repo
git clone --depth 1 https://github.com/alinaqi/maggy

Made for: Claude Code.

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 sync-contracts

README.md
[![agentmods](https://agentmods.dev/badge/commands/alinaqi/maggy/sync-contracts.svg)](https://agentmods.dev/commands/alinaqi/maggy/sync-contracts)
Your own site
<a href="https://agentmods.dev/commands/alinaqi/maggy/sync-contracts"><img src="https://agentmods.dev/badge/commands/alinaqi/maggy/sync-contracts.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,913 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00000 $0.01913
Opus 5 $0.00000 $0.00957
Sonnet 5 $0.00000 $0.00383
Haiku 4.5 $0.00000 $0.00191

Measured 6d ago against content hash 0a92da9d2478, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

sync-contracts scanned grade A with 0 findings 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 6d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

commands/sync-contracts.md · 338 lines

How it starts

The opening of the file, as written. The whole thing — 338 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/sync-contracts

Lightweight incremental update of workspace contracts without full re-analysis.

Purpose

Fast contract synchronization that:

  • Checks only contract source files (not full workspace)
  • Updates CONTRACTS.md with changes
  • Validates consistency
  • Takes ~15 seconds instead of ~2 minutes

When to Use

Scenario Command
After modifying API endpoints /sync-contracts
After changing shared types /sync-contracts
Session start shows stale contracts /sync-contracts
Post-commit hook (automatic) /sync-contracts --lightweight
Before pushing changes /sync-contracts --validate
See what changed without updating /sync-contracts --diff

Behavior

Step 1: Load Existing Topology

🔄 Loading workspace context...

Workspace: myapp (Monorepo)
Last full analysis: 2026-01-18T10:00:00Z
Last sync: 2026-01-20T14:32:00Z

Does NOT re-discover workspace structure - uses existing TOPOLOGY.md.

Step 2: Check Contract Sources

📋 Checking contract sources...

Monitored files (from .contract-sources):
  ✓ apps/api/openapi.json (modified 2h ago)
  ✓ packages/shared-types/src/index.ts (modified 2h ago)
  ○ packages/db/schema/campaigns.ts (unchanged)
  ○ packages/db/schema/users.ts (unchanged)
  ○ apps/api/app/schemas/campaign.py (unchanged)

Changes detected: 2 files

Step 3: Extract Changes

📝 Extracting contract changes...

apps/api/openapi.json:
  + POST /api/campaigns/bulk (new endpoint)
  ~ GET /api/campaigns (added 'status' query param)

packages/shared-types/src/index.ts:
  ~ Campaign interface (added 'tags: string[]' field)
  + CampaignBulkCreate interface (new)

Step 4: Update Artifacts

✏️  Updating workspace artifacts...

Updated: _project_specs/workspace/CONTRACTS.md
  - Added POST /api/campaigns/bulk to endpoints
  - Updated Campaign type definition
  - Added CampaignBulkCreate type

Updated: _project_specs/workspace/CROSS_REPO_INDEX.md
  - Added bulk create capability

Timestamps updated:
  Last sync: 2026-01-20T16:45:00Z

Read the full file on GitHub · 338 lines

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. 6d ago First seen · 338 lines · 0 tokens per session scan A 0a92da9d2478

Subscribe to this mod's changes

sync-contracts is a command published in the GitHub repository alinaqi/maggy (705 stars, last pushed 19d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,913 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.