qcode

A command for carrying out a planned coding task with tests, formatting, type checking, and linting. TDD, or test-driven development, means writing a failing test before the code that makes it pass.

In plain words
What is it for?
Type `qcode` to implement a planned feature, add or update tests, run the test suite, format files, and check TypeScript and lint rules.
Why use it?
It helps make implementation changes verifiable and keeps them aligned with existing project conventions and automated checks.

Command 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.

agentmods
npx agentmods add commands/brianmontero18/dev-mcp-tools/qcode
Clone the repo
git clone --depth 1 https://github.com/brianmontero18/dev-mcp-tools

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 309 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00309
Opus 5 $0.00000 $0.00154
Sonnet 5 $0.00000 $0.00062
Haiku 4.5 $0.00000 $0.00031

Measured yesterday against content hash 719d190e2fb4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

qcode 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 yesterday.

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/commands/qcode.md · 55 lines

What it actually says

QCODE - Implementation Execution

When user types "qcode", execute this workflow:

1. Implementation

  • 🔨 Implement the planned solution
  • 📝 Follow TDD: scaffold stub → write failing test → implement
  • 🎯 Use existing domain vocabulary for consistency
  • 🏷️ Apply branded types for IDs

2. Testing

  • ✅ Create/update tests for new functionality
  • ✅ Run tests to ensure they pass
  • ✅ Verify no existing tests are broken

3. Code Quality

  • ✅ Run prettier on newly created files
  • ✅ Run turbo typecheck lint for type checking and linting
  • ✅ Fix any formatting/linting issues

4. Execution Commands

# Run tests
npm test

# Format code  
prettier --write [files]

# Type check and lint
turbo typecheck lint

Response Template

⚡ **QCODE - Implementation Complete**

**Files Created/Modified:**
- [List files with changes]

**Tests Status:**
- ✅ New tests created and passing
- ✅ Existing tests still passing
- ✅ Test coverage: [coverage info]

**Code Quality:**
- ✅ Prettier formatting applied
- ✅ TypeScript compilation successful  
- ✅ Linting passed
- ✅ No style violations

**Implementation Summary:**
[Brief description of what was implemented]

Ready for code review (qcheck) or next steps.
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. yesterday First seen · 55 lines · 0 tokens per session scan A 719d190e2fb4

Subscribe to this mod's changes

qcode is a command published in the GitHub repository brianmontero18/dev-mcp-tools (0 stars, last pushed 10mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 309 tokens. 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 2026-09-01.