mx-flow

mx-flow is a skill for Claude Code from maxence2997/mx-harness. It costs 75 tokens per session (4,113 once invoked), scanned A, original, MIT.

A guided development workflow that takes a new feature from an idea through planning, coding, testing, review, verification, and a pull request. It requires approval of the specification before continuing.

In plain words
What is it for?
Use it to start a substantial feature or change from scratch, including creating a separate Git worktree and running the required tests and reviews. Use its finish command for cleanup after merging.
Why use it?
It keeps the work in a defined order and prevents production code from being written before a failing test exists. It also checks the change before proposing it for review.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions CLAUDE.md; mentions subagents.

Good fit Use it to start a substantial feature or change from scratch, including creating a separate Git worktree and running the required tests and reviews. Use its finish command for cleanup after merging.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/maxence2997/mx-harness/mx-flow
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 maxence2997/mx-harness --skill mx-flow
Clone the repo
git clone --depth 1 https://github.com/maxence2997/mx-harness

Made for: Claude Code.

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 mx-flow

README.md
[![agentmods](https://agentmods.dev/badge/skills/maxence2997/mx-harness/mx-flow/github.svg)](https://agentmods.dev/skills/maxence2997/mx-harness/mx-flow)
Your own site
<a href="https://agentmods.dev/skills/maxence2997/mx-harness/mx-flow"><img src="https://agentmods.dev/badge/skills/maxence2997/mx-harness/mx-flow/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 mx-flow

Your own site · 80×15
<a href="https://agentmods.dev/skills/maxence2997/mx-harness/mx-flow"><img src="https://agentmods.dev/badge/skills/maxence2997/mx-harness/mx-flow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,113 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 $0.00075 $0.04113
Opus 5.5 $0.00030 $0.01645
Sonnet 5.5 $0.00015 $0.00823
Haiku 4.5 $0.00007 $0.00411

Measured 23d ago against content hash 52c0e0126587, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mx-flow 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 23d 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.

mx-flow/SKILL.md · 320 lines

How it starts

The opening of the file, as written. The whole thing — 320 lines — stays where its author put it; the contents beside it link to each section on GitHub.

mx-flow

Trigger

/mx-flow <topic>          ← full pipeline: idea to PR
/mx-flow status [name]    ← where every feature stands, next command
/mx-flow finish <name>    ← post-merge cleanup (read references/finish.md and follow it)

Not this skill when the change is one obvious edit with no design choice — a rename, a constant, a one-file fix. Say so and do it directly (/mx-commit for the commit, /mx-pr if it needs a PR). mx-flow's cost is the spec and the review loop; a change that needs neither should not pay for them.

Non-negotiables

Violating any of these is a workflow failure. They bind every phase and every sub-agent this skill dispatches.

  1. Worktree before any code edit — before making any code change, verify the working directory is a git worktree (git rev-parse --git-dir contains worktrees/). If not, STOP and run Phase 4 first.
  2. Iron Law — no production code without a failing test first. Code written before its test exists must be deleted and reimplemented after the test is in place. No exceptions.
  3. Never weaken a gate to get green — no --no-verify, no lint suppressions to silence a finding, no deleting/skipping a failing test, no rewriting a RED test to match broken behavior, no relaxed assertions, no widened timeouts. A gate fighting you is a design signal: apply the wrong-direction rubric (doctrine below) — change approach or ask.
  4. Review before verify — do not enter Phase 6 unless mx-team-review and mx-review-triage have run on the current branch diff at least once in this session. If unsure, check for a review report in .mx/<name>/tmp/.
  5. Retry budget — the same task failing verification twice (regardless of approach) → stop retrying. In a harness with sub-agents, escalate to the strongest tier with the full failure trail (what was tried, exact diffs, exact errors); otherwise present that trail to the user with concrete options. Never a third identical attempt. (Small-tier workers get only ONE attempt before escalating — counting rule: mx-doctrine model-dispatch §6.)

Read the full file on GitHub · 320 lines

Files

What ships with it

8 files beside SKILL.md 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. 23d ago Changed · -1 lines 52c0e0126587
  2. 1mo ago Changed · -603 lines · -3 tokens per session 13f41f54f302
  3. 1mo ago First seen · 924 lines · 78 tokens per session scan A 461699313944

Subscribe to this mod's changes

mx-flow is a skill published in the GitHub repository maxence2997/mx-harness (5 stars, last pushed 24d ago), licensed MIT. It adds 75 tokens to every session and 4,113 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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