furl

furl is a plugin for Claude Code from omar-y-abdi/furl-ctx. Its token cost is not measured, scanned A, original, Apache-2.0.

A context-compression tool for Claude Code that shrinks large tool outputs before they enter the agent’s working context. The original output remains retrievable exactly through stored markers.

In plain words
What is it for?
Use it to compress, retrieve, search, list, inspect, or purge stored tool outputs and to automatically process large results after tools run.
Why use it?
It reduces the amount of space large command or tool results occupy while preserving access to the complete originals.

Plugin for Claude Code

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.

Claude Code
/plugin marketplace add omar-y-abdi/furl-ctx
agentmods
npx agentmods add plugins/omar-y-abdi/furl-ctx/furl
Clone the repo
git clone --depth 1 https://github.com/omar-y-abdi/furl-ctx

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 furl

README.md
[![agentmods](https://agentmods.dev/badge/plugins/omar-y-abdi/furl-ctx/furl.svg)](https://agentmods.dev/plugins/omar-y-abdi/furl-ctx/furl)
Your own site
<a href="https://agentmods.dev/plugins/omar-y-abdi/furl-ctx/furl"><img src="https://agentmods.dev/badge/plugins/omar-y-abdi/furl-ctx/furl.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

furl 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 3d 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.

plugins/furl/.claude-plugin/plugin.json · 24 lines

What it actually says

{
  "name": "furl",
  "version": "1.4.0",
  "description": "Furl context compression for Claude Code: bundles the Furl MCP server (furl_compress / furl_retrieve / furl_stats / furl_purge / furl_search / furl_list) and a fail-open PostToolUse hook that shrinks large tool outputs before they land in context. Originals stay byte-exactly retrievable via <<ccr:HASH>> markers.",
  "author": {
    "name": "Omar Y. Abdi",
    "url": "https://github.com/omar-y-abdi/furl-ctx"
  },
  "homepage": "https://github.com/omar-y-abdi/furl-ctx",
  "license": "Apache-2.0",
  "keywords": [
    "claude-code",
    "mcp",
    "context",
    "compression",
    "tokens",
    "ccr",
    "hook"
  ],
  "skills": [
    "./skills/"
  ]
}
Contents

What it installs

The manifest is a name and a version. 3 hooks travel with it, and installing the plugin installs all of them. Each is measured on its own page, and each can be installed alone.

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. 3d ago First seen · 24 lines scan A 39581bdcd83e

Subscribe to this mod's changes

furl is a plugin published in the GitHub repository omar-y-abdi/furl-ctx (4 stars, last pushed 8d ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.

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