throughline

A development workflow built around PRDs, TDDs, and ADRs: documents describing the product, tests that define expected behavior, and records of important technical decisions. It uses review gates before implementation is accepted.

In plain words
What is it for?
Use it to bootstrap a project, critique designs, implement one test-defined change per pull request, verify the result, and run formatting and lint checks.
Why use it?
It breaks large development work into documented decisions and checked steps, reducing the chance that code is built from unclear requirements or unverified tests.

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 cahenesy/throughline
agentmods
npx agentmods add plugins/cahenesy/throughline/marketplace
Clone the repo
git clone --depth 1 https://github.com/cahenesy/throughline

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

throughline 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 · 13 lines

What it actually says

{
  "name": "throughline",
  "description": "Throughline development kit: a PRD/TDD/ADR design-doc pipeline with phase-gate PRs, an independent design-critique gate, toolchain bootstrap, and gated unattended implementation (failing-test-first + mechanical verify + independent review on a diverse model before any TDD is marked done; one PR per TDD).",
  "owner": { "name": "Chris Henesy" },
  "plugins": [
    {
      "name": "throughline",
      "source": "./",
      "description": "Throughline bootstrap kit: project-setup skill, standard subagents (incl. an independent design-reviewer), gated test-first/verify implementation, and a format+lint hook. Superpowers and pr-review-toolkit are optional delegates."
    }
  ]
}
Files

What ships with it

2 files beside marketplace.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 13 lines scan A e7208c6d22ed

Subscribe to this mod's changes

throughline is a plugin published in the GitHub repository cahenesy/throughline (2 stars, last pushed 16d 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 2026-08-31.