backpressured

backpressured is a skill for Claude Code from lucasfcosta/backpressured. It costs 95 tokens per session (3,216 once invoked), scanned A, original, MIT.

An automated development loop that repeatedly checks implementation work against acceptance requirements and quality checks before calling it complete.

In plain words
What is it for?
Running a development task through planning, implementation, testing, review, and other available checks when the user explicitly asks for a backpressured or backpressure-driven run. It stops only when the checks pass or a specific human-blocking issue remains.
Why use it?
It catches failures from tests, types, linting, benchmarks, and reviews during the work instead of leaving them for a person to discover later.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: reads .claude/ paths; mentions subagents.

Part of the backpressured plugin — 9 skills, 1 agent, 1 MCP server shipped together

Good fit Running a development task through planning, implementation, testing, review, and other available checks when the user explicitly asks for a backpressured or backpressure-driven run. It stops only when the checks pass or a specific human-blocking issue remains.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lucasfcosta/backpressured/goal
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.

Any agent
npx skills add lucasfcosta/backpressured --skill goal
Clone the repo
git clone --depth 1 https://github.com/lucasfcosta/backpressured

Made for: Claude Code.

Or install backpressured, the plugin that ships this one along with the rest of its 9 skills, 1 agent, 1 MCP server.

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 backpressured

README.md
[![agentmods](https://agentmods.dev/badge/skills/lucasfcosta/backpressured/goal.svg)](https://agentmods.dev/skills/lucasfcosta/backpressured/goal)
Your own site
<a href="https://agentmods.dev/skills/lucasfcosta/backpressured/goal"><img src="https://agentmods.dev/badge/skills/lucasfcosta/backpressured/goal.svg" alt="Measured on agentmods" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,216 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00095 $0.03216
Opus 5 $0.00048 $0.01608
Sonnet 5 $0.00019 $0.00643
Haiku 4.5 $0.00010 $0.00322

Measured 8d ago against content hash 9e9e070f976a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

backpressured scanned grade A with 1 finding 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 8d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

"Run for real: curl, browser, full suite, full benchmarks, holistic independent review" [shape=box];
skills/goal/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Backpressured

Overview

You are the producer's backpressure of LAST resort — your job is to replace yourself with machines that say "no" first. A human reading your code should be the last line of defense, never the first. Every "no" a machine can produce — a failing test, a type error, a lint rule, a benchmark regression, a reviewer's objection — must be produced by the machine, before you hand anything back.

So you do not stop when the code "works." You drive the goal through the full loop below and stop only when every acceptance criterion and every quality check passes — or when you are genuinely blocked and can name exactly what is blocking you.

When to Use

  • The user explicitly mentions "backpressured" or "backpressure" — asking for a backpressured loop/run, "do this backpressured", or invoking it by that name (brand-name mentions count too).
  • The user runs the /backpressured:goal command.

Not for: generic "implement X", "fix this bug", "build X and ship it", "open a PR", or a bare /goal request that does not explicitly mention backpressure. A finished, landed result being expected is not by itself enough — wait for one of the two signals above. Also not for one-line factual answers, pure research/exploration, or when the human wants to drive step by step.

First: pin down "done"

"Done" is defined by criteria, so make them explicit before anything else:

  • Acceptance criteria — what must be true for the goal to be met. If the user didn't list them, infer them and state them up front.
  • Quality checks — lint, tests, new behavior covered, project verification scripts, benchmarks, review. These apply on top of acceptance criteria, every time.
  • Project customization — check for an optional BACKPRESSURE.md at the project root and fold its instructions in now (see Figuring out the checks).

The Loop

digraph backpressure_loop {
    "Goal received" [shape=doublecircle];
    "Write lightweight plan (approach + architecture, not details)" [shape=box];
    "Independent reviewer approves the plan?" [shape=diamond];
    "Revise plan" [shape=box];
    "Write the next patch" [shape=box];
    "Run every applicable check (incl. independent code review)" [shape=box];
    "All checks green?" [shape=diamond];
    "Fix the failure" [shape=box];
    "Genuinely blocked?" [shape=diamond];
    "STOP: name the blocker, do NOT mark done" [shape=octagon, style=filled, fillcolor=red, fontcolor=white];
    "All acceptance + quality criteria met?" [shape=diamond];
    "Run for real: curl, browser, full suite, full benchmarks, holistic independent review" [shape=box];
    "Open the PR" [shape=box];
    "Monitor: CI, comments, conflicts" [shape=box];
    "Landed clean with nothing outstanding?" [shape=diamond];
    "Done" [shape=doublecircle];

    "Goal received" -> "Write lightweight plan (approach + architecture, not details)";
    "Write lightweight plan (approach + architecture, not details)" -> "Independent reviewer approves the plan?";
    "Independent reviewer approves the plan?" -> "Revise plan" [label="no"];
    "Revise plan" -> "Independent reviewer approves the plan?";
    "Independent reviewer approves the plan?" -> "Write the next patch" [label="yes"];
    "Write the next patch" -> "Run every applicable check (incl. independent code review)";
    "Run every applicable check (incl. independent code review)" -> "All checks green?";
    "All checks green?" -> "Fix the failure" [label="no"];
    "Fix the failure" -> "Genuinely blocked?";
    "Genuinely blocked?" -> "STOP: name the blocker, do NOT mark done" [label="yes"];
    "Genuinely blocked?" -> "Run every applicable check (incl. independent code review)" [label="no"];
    "All checks green?" -> "All acceptance + quality criteria met?" [label="yes"];
    "All acceptance + quality criteria met?" -> "Write the next patch" [label="no — keep going, do NOT hand back"];
    "All acceptance + quality criteria met?" -> "Run for real: curl, browser, full suite, full benchmarks, holistic independent review" [label="yes"];
    "Run for real: curl, browser, full suite, full benchmarks, holistic independent review" -> "Open the PR";
    "Open the PR" -> "Monitor: CI, comments, conflicts";
    "Monitor: CI, comments, conflicts" -> "Landed clean with nothing outstanding?";
    "Landed clean with nothing outstanding?" -> "Write the next patch" [label="no"];
    "Landed clean with nothing outstanding?" -> "Done" [label="yes"];
}

Read the full file on GitHub · 158 lines

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. 8d ago First seen · 158 lines · 95 tokens per session scan A 9e9e070f976a

Subscribe to this mod's changes

backpressured is a skill published in the GitHub repository lucasfcosta/backpressured (63 stars, last pushed 3mo ago), licensed MIT. It adds 95 tokens to every session and 3,216 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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