# Dependency Allowlist

Dependency Allowlist: what it does, its label on each agent, what it misses, and examples.

Catalog policy verify-dependency-exists, version 0.2.2, labelled blocks on Claude Code.

> Ask the user before running any command on this page: each one changes how their agent or repository behaves.

## What it does

Allowlist gate for new dependencies; no registry lookup. Reads Python, Node, Rust, Ruby, PHP, JVM, .NET, Go, Elixir, Dart and Swift manifests (read, never run); blocks an added name missing from .chock/dependency-allowlist.txt, asks on a lockfile-only one. Not read: computed lists, sources, versions, some forms (see docs). No allowlist file (plugin-only installs): a manifest change warns, never blocks. Repo form is opt-in: seed, observe, \`chock enable\`. Runs: commit, agent write, turn's end.

## On each agent

| Agent | Label | What it does there |
| --- | --- | --- |
| Claude Code | Blocks | Blocks on an agent's file writes and at turn end |
| Cursor | Blocks | Blocks on an agent's file writes and at turn end. Where its description says it asks, it refuses at both points, because this client cannot prompt at either point |
| Codex | Blocks | Blocks on an agent's file writes and at turn end. Where its description says it asks, it refuses at both points, because this client cannot prompt at either point. If the hook errors, the action goes through (not witnessed; the vendor's row is only partly live-run) |
| GitHub Copilot | Blocks | Blocks at turn end only. It does not check a file write when it happens. Where its description says it asks, it refuses at turn end, because this client cannot prompt there. If the hook errors, the action goes through (not witnessed; the vendor's row is only partly live-run) |
| Devin | Blocks | Blocks at turn end only. It does not check a file write when it happens. Where its description says it asks, it refuses at turn end, because this client cannot prompt there. If the hook errors, the action goes through (vendor docs only, not witnessed) |
| Grok | Not graded | Not graded yet for Grok |
| goose | Not graded | Not graded yet for goose |
| Antigravity | Not graded | Not graded yet for Antigravity |
| OpenHands | Not graded | Not graded yet for OpenHands |
| Kimi Code | Not graded | Not graded yet for Kimi Code |
| Factory Droid | Not graded | Not graded yet for Factory Droid |

## What it misses

This policy does not state what it misses.

## Examples from its eval suite

Refused: A package that is not on the allowlist, which may not exist, is added to requirements.txt or package.json.

Allowed: A package already listed in .chock/dependency-allowlist.txt is added.

## More

- [The policy on the catalog pages](https://chock.sh/coding/policies/verify-dependency-exists/)
- [Source at the pinned catalog commit](https://github.com/open-coder-ai/chock-catalog/tree/1e60d211c1bb767152c6ab0167932da06ab3a10f/base/verify-dependency-exists)


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