A plugin marketplace listing for ctx, a developer tool described as providing fast local search and Git blame for agent sessions. Git blame shows which change introduced each line of a file.

Use it when you need to find information in local agent-session history or inspect the origin of code changes.

It can help developers search previous agent conversations and trace code changes back to their source.

ctx — Plugin by ctxrs

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 plugins/ctxrs/ctx/marketplace

Claude Code

/plugin marketplace add ctxrs/ctx

Clone the repo

git clone --depth 1 https://github.com/ctxrs/ctx

Made for: Claude Code.

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

ctx 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.

.claude-plugin/marketplace.json · 38 lines

What it actually says

{
  "name": "ctx",
  "owner": {
    "name": "ctx engineering inc"
  },
  "plugins": [
    {
      "name": "ctx",
      "displayName": "ctx",
      "source": "./plugins/ctx",
      "description": "Fast local search and 'git blame' for agent sessions.",
      "version": "1.2.4",
      "author": {
        "name": "ctx engineering inc"
      },
      "homepage": "https://ctx.rs",
      "repository": "https://github.com/ctxrs/ctx",
      "license": "Apache-2.0",
      "keywords": [
        "ctx",
        "agent-sessions",
        "agent-history",
        "transcripts",
        "local-search",
        "code-provenance"
      ],
      "category": "developer-tools",
      "tags": [
        "ctx",
        "agent-history",
        "local-search",
        "code-provenance",
        "developer-tools"
      ]
    }
  ]
}

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.

yesterday First seen · 38 lines scan A 7355f886e756

Subscribe to this mod's changes

ctx is a plugin published in the GitHub repository ctxrs/ctx (1,051 stars, last pushed 2d 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 2026-08-30.

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ctx

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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