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block-unapproved-egress

v0.1.0

Best-effort guard against exfiltration through the tool channel: a network command (curl/wget/Invoke-WebRequest) that UPLOADS data -- POST/PUT, --data/--form, --upload-file, --post-file -- to a host outside the egress allowlist. The allowlist defaults to package registries and code hosting and is meant to be extended with your org's own domains; a host matches by exact name or ".<entry>" suffix. Fetch-only traffic is left alone. A schemeless or protocol-relative target is checked too, from the last non-flag token, but only when no explicit http(s):// URL appears -- once one has, it alone decides. Options are parsed as curl reads them, so -sd @file is an upload. Tool-time FLOOR, not a network sandbox. Known bypasses: ~/.curlrc, obfuscated payloads, non-standard clients, a language runtime. Escape: 'pragma: allowlist egress'. [Session-enforced via a PreToolUse hook; needs git, a usable bash and a Python 3.11+ (python3, python or py, whichever actually runs; the Windows Store stub is skipped). With no working Python the hook refuses (exit 2); without git or bash, fail-open clients allow silently and fail-closed clients refuse matched commands. If the guard itself crashes or times out, the hook asks for confirmation rather than allowing silently.]

Claude Code1 Skill

By chock-coreLicense: Apache-2.02 GitHub starsUpdated 6 days ago

Directory evidence

Runtimes
Claude Code
Parsed components
1 skill or MCP entry
Source updated
Sep 30, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install block-unapproved-egress for Claude Code

Installs for the current user
claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install block-unapproved-egress-5@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/open-coder-ai/chock-copilot-plugins

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is claude/block-unapproved-egress/.

Plugin files

claude/block-unapproved-egress/
├── .claude-plugin/plugin.json
└── skills/block-unapproved-egress/SKILL.md

Included Skills1

block-unapproved-egressskills/block-unapproved-egress/SKILL.md

Best-effort guard against exfiltration through the tool channel: a network command (curl/wget/Invoke-WebRequest) that UPLOADS data -- POST/PUT, --data/--form, --upload-file, --post-file -- to a host outside the egress allowlist. The allowlist defaults to package registries and code hosting and is meant to be extended with your org's own domains; a host matches by exact name or ".<entry>" suffix. Fetch-only traffic is left alone. A schemeless or protocol-relative target is checked too, from the last non-flag token, but only when no explicit http(s):// URL appears -- once one has, it alone decides. Options are parsed as curl reads them, so -sd @file is an upload. Tool-time FLOOR, not a network sandbox. Known bypasses: ~/.curlrc, obfuscated payloads, non-standard clients, a language runtime. Escape: 'pragma: allowlist egress'.

Plugin manifests1

claude/block-unapproved-egress/.claude-plugin/plugin.json
{
  "name": "block-unapproved-egress",
  "description": "Best-effort guard against exfiltration through the tool channel: a network command (curl/wget/Invoke-WebRequest) that UPLOADS data -- POST/PUT, --data/--form, --upload-file, --post-file -- to a host outside the egress allowlist. The allowlist defaults to package registries and code hosting and is meant to be extended with your org's own domains; a host matches by exact name or \".<entry>\" suffix. Fetch-only traffic is left alone. A schemeless or protocol-relative target is checked too, from the last non-flag token, but only when no explicit http(s):// URL appears -- once one has, it alone decides. Options are parsed as curl reads them, so -sd @file is an upload. Tool-time FLOOR, not a network sandbox. Known bypasses: ~/.curlrc, obfuscated payloads, non-standard clients, a language runtime. Escape: 'pragma: allowlist egress'. [Session-enforced via a PreToolUse hook; needs git, a usable bash and a Python 3.11+ (python3, python or py, whichever actually runs; the Windows Store stub is skipped). With no working Python the hook refuses (exit 2); without git or bash, fail-open clients allow silently and fail-closed clients refuse matched commands. If the guard itself crashes or times out, the hook asks for confirmation rather than allowing silently.]",
  "keywords": [
    "chock",
    "policy-as-code",
    "rule",
    "advise",
    "{'control': 'asi02', 'coverage': 'partial', 'note': 'raises the floor against tool-channel data exfiltration to unapproved hosts; a tool-time guard, not a network sandbox -- obfuscated, non-standard-client and runtime egress remain out of reach'}"
  ],
  "version": "0.1.0",
  "author": {
    "name": "chock-core"
  },
  "license": "Apache-2.0",
  "repository": "https://github.com/open-coder-ai/chock"
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[block-unapproved-egress on Agent Plugins Marketplace](https://pluginsmp.com/plugins/block-unapproved-egress-5)