Dependency-And-Interface-Safety

Dependency-And-Interface-Safety is a cursor rule for Cursor from Fullive-AI/Anima. It costs 320 tokens per session, scanned A, original, Apache-2.0.

A set of rules for safely changing shared interfaces, schemas, contracts, and dependencies in software.

In plain words
What is it for?
Use it when changing public functions, exported types, API shapes, event data, configuration, command-line arguments, database schemas, or file formats.
Why use it?
It helps prevent changes from unexpectedly breaking the code, tests, APIs, data formats, or other parts that depend on them.

Cursor rule for Cursor

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 rules/fullive-ai/anima/dependency-and-interface-safety
Clone the repo
git clone --depth 1 https://github.com/Fullive-AI/Anima

Made for: Cursor.

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 Dependency-And-Interface-Safety

README.md
[![agentmods](https://agentmods.dev/badge/rules/fullive-ai/anima/dependency-and-interface-safety.svg)](https://agentmods.dev/rules/fullive-ai/anima/dependency-and-interface-safety)
Your own site
<a href="https://agentmods.dev/rules/fullive-ai/anima/dependency-and-interface-safety"><img src="https://agentmods.dev/badge/rules/fullive-ai/anima/dependency-and-interface-safety.svg" alt="Measured on agentmods" height="20"></a>
Per session 320 This file is loaded in full into every session.
When invoked 320 The same file — it is already loaded in full.
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 $0.00320 $0.00320
Opus 5 $0.00160 $0.00160
Sonnet 5 $0.00064 $0.00064
Haiku 4.5 $0.00032 $0.00032

Measured 4d ago against content hash 0e23c064c4f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Dependency-And-Interface-Safety 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 4d 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.

.cursor/rules/Dependency-And-Interface-Safety.mdc · 70 lines

What it actually says

Treat shared interfaces, schemas, contracts, and dependency relationships as high-sensitivity areas.

Core rule

Before changing an interface, find who depends on it.

Interfaces include

  • public functions
  • exported types
  • module contracts
  • API request and response shapes
  • event payloads
  • message formats
  • topic names
  • config structures
  • CLI arguments
  • database-facing schemas
  • file formats

Required behavior before changing an interface

Identify:

  • producers
  • consumers
  • callers
  • downstream dependents
  • test coverage around the contract
  • whether the change is backward compatible

Preferred approach

  • preserve backward compatibility by default
  • prefer additive changes over breaking changes
  • update all affected callers when a contract must change
  • keep dependency relationships clear and stable
  • avoid hidden contract drift

Breaking changes

Only make a breaking change when clearly necessary.

If required:

  1. minimize the blast radius
  2. update all affected code paths
  3. update tests
  4. update docs
  5. call out the compatibility impact explicitly in your summary

Dependency safety

  • do not create circular dependencies
  • do not introduce a new dependency for a trivial local need
  • prefer existing project patterns and libraries
  • avoid tight coupling between unrelated modules
  • keep abstractions honest and narrow

Avoid

  • changing one side of an interface without updating the other side
  • silently altering payload meanings
  • reusing a contract for a different semantic purpose
  • weakening types or schemas just to make code compile
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. 4d ago First seen · 70 lines · 320 tokens per session scan A 0e23c064c4f3

Subscribe to this mod's changes

Dependency-And-Interface-Safety is a cursor rule published in the GitHub repository Fullive-AI/Anima (1,049 stars, last pushed 14d ago), licensed Apache-2.0. It adds 320 tokens to every session, about $0.0016 per session on Opus 5. 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.