spec-flow

spec-flow is a skill for Claude Code, Codex from alexei-led/cc-thingz. It costs 71 tokens per session (1,087 once invoked), scanned A, original, MIT.

A lightweight workflow for planning and carrying out software changes one small, checkable task at a time, using Markdown files to track requirements and progress.

In plain words
What is it for?
Use it for spec-driven development: plan a task, implement it, record progress, and close or resume the work through the bundled command-line helper.
Why use it?
It prevents a large change from becoming an unclear list of unfinished work. Checkpoints make it easier to stop and resume without losing the current state.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for spec-driven development: plan a task, implement it, record progress, and close or resume the work through the bundled command-line helper.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/alexei-led/cc-thingz/spec-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 alexei-led/cc-thingz --skill spec-flow
Clone the repo
git clone --depth 1 https://github.com/alexei-led/cc-thingz

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 spec-flow

README.md
[![agentmods](https://agentmods.dev/badge/skills/alexei-led/cc-thingz/spec-flow/github.svg)](https://agentmods.dev/skills/alexei-led/cc-thingz/spec-flow)
Your own site
<a href="https://agentmods.dev/skills/alexei-led/cc-thingz/spec-flow"><img src="https://agentmods.dev/badge/skills/alexei-led/cc-thingz/spec-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 spec-flow

Your own site · 80×15
<a href="https://agentmods.dev/skills/alexei-led/cc-thingz/spec-flow"><img src="https://agentmods.dev/badge/skills/alexei-led/cc-thingz/spec-flow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,087 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00071 $0.01087
Opus 5.5 $0.00028 $0.00435
Sonnet 5.5 $0.00014 $0.00217
Haiku 4.5 $0.00007 $0.00109

Measured 27d ago against content hash 0eb10cacc361, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

spec-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 27d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/specctl.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

src/skills/spec-flow/SKILL.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spec flow

Lightweight loop for controlled work, one task at a time: plan one slice, execute one task, checkpoint or close, repeat.

scripts/specctl (written specctl below) owns state. Do not edit task status or .spec/SESSION.yaml by hand. references/specctl-commands.md lists every command. references/method.md covers task quality, templates, the planning output, and the mini-interview.

State model

  • .spec/tasks/TASK-*.md — executable vertical slices. Required for work.
  • .spec/epics/EPIC-*.md — optional group for multi-task plans.
  • .spec/reqs/REQ-*.md — optional WHY/WHAT context for ambiguous work.
  • .spec/SESSION.yaml — active task, step, base commit.
  • .spec/PROGRESS.md — append-only activity log.

Task states: todo, in-progress, done.

Modes

Orient

For status, the next task, resume, or health: run specctl status, ready, session handoff, and validate. Report the active session, the next ready task, validation issues, and the smallest next action.

Plan

For an idea, requirement, bug, or project gap that needs an executable plan. Done when the smallest useful artifact set exists and passes specctl validate, and its first task appears in specctl ready (a REQ-only plan has no ready task yet). Create tasks and requirements with specctl new task|req, then fill in the details; write an EPIC-* file by hand. Pick the smallest set:

  • one clear slice: one TASK-*
  • several slices: one EPIC-* plus tasks
  • unclear WHY or WHAT: one REQ-* first

Run specctl init when .spec/ is missing, and check status and session before changing files. In an existing project, read the code and project instructions first, and link REQ or EPIC context only when it reduces ambiguity. Ask questions only when the slice is unclear. Show the proposed plan before writing it unless the user already authorized that scope. Build a full backlog only on request, and keep implementation code out of plan files.

Execute

For work, continue, or implement. Done when the relevant build/test/lint checks pass on what you changed, or you name each check that did not run and why. Before closing, confirm the acceptance criteria and show the scoped diff or specctl session handoff; if the task cannot finish, checkpoint it instead.

Read the full file on GitHub · 119 lines

Files

What ships with it

5 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. 27d ago Changed · -42 lines 0eb10cacc361
  2. 1mo ago Changed d6bf82f1273d
  3. 1mo ago First seen · 161 lines · 71 tokens per session scan A 10f71a7d744d

Subscribe to this mod's changes

spec-flow is a skill published in the GitHub repository alexei-led/cc-thingz (38 stars, last pushed today), licensed MIT. It adds 71 tokens to every session and 1,087 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 2026-08-30.

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