frozen-paths

A file-access rule set for projects using a Figma pipeline. It defines which directories an agent may write to and makes all other project files read-only, with special restrictions for generated and configuration files.

In plain words
What is it for?
Use it to enforce an allowlist for creating, editing, or deleting pipeline outputs, components, icons, stories, tests, and related configuration files.
Why use it?
It prevents accidental edits outside approved locations and protects dependencies, build output, lockfiles, and environment files from changes.

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/punkadillo/figma-code-composer/frozen-paths
Clone the repo
git clone --depth 1 https://github.com/punkadillo/figma-code-composer

Made for: Cursor.

Per session 435 This file is loaded in full into every session.
When invoked 435 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 $0.00435 $0.00435
Opus 5 $0.00217 $0.00217
Sonnet 5 $0.00087 $0.00087
Haiku 4.5 $0.00044 $0.00044

Measured yesterday against content hash 0588d4482292, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

frozen-paths 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 yesterday.

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/frozen-paths.mdc · 39 lines

What it actually says

Rule 1 — Write-access allowlist

Cursor in agent mode may create / edit / delete files only inside the directories listed in .figma-pipeline/config.jsonwriteScope.allowedDirs. Everything else in the project is read-only.

Before /init-figma-compose runs (bootstrap)

Until .figma-pipeline/config.json exists, only these roots are writable:

  • .figma-pipeline/**
  • .mcp.json
  • /tmp/**

After /init-figma-compose

The wizard composes writeScope.allowedDirs from the configured paths (token output, component dirs, icon output, story / test output when not co-located). Plus always: .figma-pipeline/**, .mcp.json, /tmp/**.

Always-blocked

Regardless of the allowlist:

  • node_modules/**, dist/**, build/**, .next/**, .turbo/**, coverage/**
  • package-lock.json, yarn.lock, pnpm-lock.yaml
  • .env, .env.* (except .env.example — see env-access.mdc)
  • tailwind.config.{js,ts,cjs,mjs} when cssSystem.name == "tailwind-v4" (v4 is CSS-only)

Escape

The escape hatch FP_ALLOW_RESTRICTED_WRITE=1 (legacy HK_ALLOW_RESTRICTED_WRITE=1 still accepted) lives in the shell env, which Cursor cannot read. The user must explicitly tell Cursor to override; otherwise refuse the write and report.

If you find yourself wanting to write outside the allowlist

Stop. Either (a) ask the user to extend config.writeScope.allowedDirs and re-validate, or (b) ask the user to override explicitly. Do not silently bypass.

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. yesterday First seen · 39 lines · 435 tokens per session scan A 0588d4482292

Subscribe to this mod's changes

frozen-paths is a cursor rule published in the GitHub repository punkadillo/figma-code-composer (3 stars, last pushed 13d ago), licensed MIT. It adds 435 tokens to every session, about $0.0022 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 2026-08-31.