qcoder-coding-builder

qcoder-coding-builder is a skill for Claude Code, Codex from echoomegaprime/echo-qcoder. It costs 63 tokens per session (537 once invoked), scanned A, original, MIT.

A coding workflow for QCoder, a local tool that can change software in a project. It covers implementation, bug fixes, refactoring, tests, command-line work, and code review.

In plain words
What is it for?
Use it to add or repair features, investigate failures, reorganize code, write or run tests, review changes, and perform related command-line development work.
Why use it?
It gives coding tasks a defined process: inspect the project, read its instructions, make a focused change, and check the result with appropriate tests and other checks.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions CLAUDE.md; mentions AGENTS.md.

Good fit Use it to add or repair features, investigate failures, reorganize code, write or run tests, review changes, and perform related command-line development work.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/echoomegaprime/echo-qcoder/qcoder-coding-builder
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 echoomegaprime/echo-qcoder --skill qcoder-coding-builder
Clone the repo
git clone --depth 1 https://github.com/echoomegaprime/echo-qcoder

Made for: Claude Code, Codex.

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 qcoder-coding-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/echoomegaprime/echo-qcoder/qcoder-coding-builder/github.svg)](https://agentmods.dev/skills/echoomegaprime/echo-qcoder/qcoder-coding-builder)
Your own site
<a href="https://agentmods.dev/skills/echoomegaprime/echo-qcoder/qcoder-coding-builder"><img src="https://agentmods.dev/badge/skills/echoomegaprime/echo-qcoder/qcoder-coding-builder/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 qcoder-coding-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/echoomegaprime/echo-qcoder/qcoder-coding-builder"><img src="https://agentmods.dev/badge/skills/echoomegaprime/echo-qcoder/qcoder-coding-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 537 The whole file, excluding the scripts and references it only reads on demand.
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.
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 $0.00063 $0.00537
Opus 5.5 $0.00025 $0.00215
Sonnet 5.5 $0.00013 $0.00107
Haiku 4.5 $0.00006 $0.00054

Measured 1mo ago against content hash 8e3990976c94, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

qcoder-coding-builder 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 1mo 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.

qwen-skills/qcoder-coding-builder/SKILL.md · 41 lines

How it starts

The opening of the file, as written. The whole thing — 41 lines — stays where its author put it; the contents beside it link to each section on GitHub.

QCoder Coding Builder

Expected input

Require a concrete outcome and a workspace already placed in scope. Resolve ambiguity from the repository before asking. Never infer that a test, commit, deployment, or queue item succeeded.

Required sequence

  1. Read the root and nearest AGENTS.md plus any explicitly routed CLAUDE.md or project overlay before editing.
  2. Inspect git status, the current branch, relevant manifests, tests, and nearby implementation. Preserve all unrelated changes.
  3. Before new code, search ECHO Arcanum, the Code Library, and current official documentation through the scoped SOL SDK. Reuse an existing pattern when it fits.
  4. For nontrivial behavior, make the contract executable with a failing test, implement the smallest complete change, and rerun the focused test.
  5. Run proportional static, build, test, and security checks. Diagnose the actual failure mechanism before changing code after a failed gate.
  6. Commit only owned files with the ECHO repository identity when the active mission requires a commit. Register completed direct work and checkpoint material evidence.

Invoke moving ECHO facts through SYSTEMS/codex_auto/sol_cli.py sdk invoke; the launcher supplies SOL_RUN_ID, SOL_STATE_DB, and the scoped broker token. Never print or persist that token.

Decision points

  • Stay in cli-build for QCoder launcher and terminal integration work.
  • Switch the durable SOL mission when responsibility materially changes; include completed work, the next responsibility, and evidence in the checkpoint.
  • Use an isolated verification copy when the primary checkout is too dirty to produce trustworthy release evidence.
  • A passing unit test is not deployment proof. Use the repository's staging-first release gate when production behavior is in scope.

Facts that must not be inferred

Do not infer ownership of dirty files, successful installation, GPU residency, CI status, a pushed commit, or a live deployment. Read the relevant source of truth.

Read the full file on GitHub · 41 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. 1mo ago First seen · 41 lines · 63 tokens per session scan A 8e3990976c94

Subscribe to this mod's changes

qcoder-coding-builder is a skill published in the GitHub repository echoomegaprime/echo-qcoder (0 stars, last pushed yesterday), licensed MIT. It adds 63 tokens to every session and 537 once invoked, about $0.0003 per session on Opus 5.5. 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.

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