underpass marketplace

underpass marketplace is a plugin for Claude Code from underpass-ai/kmp. Its token cost is not measured, scanned A, original, Apache-2.0.

A local-first memory add-on for coding agents. It records what happened, when it happened, and why, and shows it in a shared ChronoLoom view.

In plain words
What is it for?
Keeping a shared record of agent activity, including its timing and reasons. Reviewing that history through the ChronoLoom view.
Why use it?
It helps keep useful session context available without relying on a remote service. This can make past decisions and events easier to review.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Keeping a shared record of agent activity, including its timing and reasons. Reviewing that history through the ChronoLoom view.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add underpass-ai/kmp
/plugin install underpass marketplace
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.

Clone the repo
git clone --depth 1 https://github.com/underpass-ai/kmp

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 underpass marketplace

README.md
[![agentmods](https://agentmods.dev/badge/plugins/underpass-ai/kmp/marketplace/github.svg)](https://agentmods.dev/plugins/underpass-ai/kmp/marketplace)
Your own site
<a href="https://agentmods.dev/plugins/underpass-ai/kmp/marketplace"><img src="https://agentmods.dev/badge/plugins/underpass-ai/kmp/marketplace/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for underpass marketplace

Your own site · 80×15
<a href="https://agentmods.dev/plugins/underpass-ai/kmp/marketplace"><img src="https://agentmods.dev/badge/plugins/underpass-ai/kmp/marketplace.svg" alt="Reviewed on agentmods" width="80" 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. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

underpass marketplace 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 16d 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.

.claude-plugin/marketplace.json · 21 lines

What it actually says

{
  "name": "underpass",
  "description": "KMP by Underpass",
  "owner": {
    "name": "Underpass AI",
    "url": "https://underpassai.com"
  },
  "plugins": [
    {
      "name": "kmp",
      "description": "Local-first agent memory that preserves what happened, when and why, with a shared ChronoLoom view.",
      "source": {
        "source": "git-subdir",
        "url": "https://github.com/underpass-ai/kmp.git",
        "path": "plugins/kmp",
        "ref": "v0.25.0"
      }
    }
  ]
}
Contents

The plugins it lists here

This marketplace lists 1 plugin kept in the same repository. Each has its own page, its own measurements and its own install command.

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. 16d ago Changed 9e6a11da9fa0
  2. 23d ago Changed aba0bd5e0d2e
  3. 24d ago Changed 6f0790931cfe
  4. 26d ago Changed 0636025626df
  5. 27d ago Changed 72bbcf4bf16b
  6. 1mo ago Changed 0cad718f7c57
  7. 1mo ago Changed d391013658f6
  8. 1mo ago Changed cd40aa10b867
  9. 1mo ago Changed e3e20ad59a66
  10. 1mo ago First seen · 21 lines scan A 61a558d20d22

Subscribe to this mod's changes

underpass marketplace is a plugin published in the GitHub repository underpass-ai/kmp (0 stars, last pushed 10d 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.