tokenjam

A Claude Code plugin marketplace for TokenJam, a local tool that tracks and helps reduce the token cost of coding-agent work.

In plain words
What is it for?
Use it to inspect token usage, review savings or optimization reports, and run local cost-control checks for Claude Code agents.
Why use it?
It helps you see where agent usage may be wasting tokens and review ways to lower that cost without sending your telemetry to a hosted account.

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 Metabuilder-Labs/tokenjam
agentmods
npx agentmods add plugins/metabuilder-labs/tokenjam/marketplace
Clone the repo
git clone --depth 1 https://github.com/Metabuilder-Labs/tokenjam

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

tokenjam 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 2d 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 · 16 lines

What it actually says

{
  "name": "tokenjam",
  "owner": {
    "name": "Metabuilder Labs",
    "url": "https://tokenjam.dev"
  },
  "description": "Claude Code plugin marketplace for tokenjam: local-first token-cost observability and fixes.",
  "plugins": [
    {
      "name": "tokenjam",
      "source": "./plugin",
      "description": "Local-first observability and cost control for Claude Code agents: a zero-token statusline showing context re-read %, savings/optimize reports, and a health check."
    }
  ]
}
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. 2d ago First seen · 16 lines scan A 5bd7dea5c8ee

Subscribe to this mod's changes

tokenjam is a plugin published in the GitHub repository Metabuilder-Labs/tokenjam (106 stars, last pushed 4d ago), licensed MIT. 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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