flow-develop

A development workflow that uses Codex and Gemini command-line tools together to implement software after checking the project's planning state.

In plain words
What is it for?
Use it when building a feature or new project, updating the project's development status, and carrying out implementation work across frontend, backend, or other code.
Why use it?
It provides a defined sequence for starting development and warns when the project's requirements phase has not been completed.

Skill for Claude CodeCodex

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 skills/ces-ltd/lumi/flow-develop
Any agent
npx skills add CES-Ltd/Lumi --skill flow-develop
Clone the repo
git clone --depth 1 https://github.com/CES-Ltd/Lumi

Made for: Claude Code, Codex.

Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 7,294 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 $0.00057 $0.07294
Opus 5 $0.00028 $0.03647
Sonnet 5 $0.00011 $0.01459
Haiku 4.5 $0.00006 $0.00729

Measured 2d ago against content hash 65046542408e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

flow-develop 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 2d 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.

resources/seed/octopus/skills/flow-develop/SKILL.md · 843 lines

How it starts

The opening of the file, as written. The whole thing — 843 lines — stays where its author put it; the contents beside it link to each section on GitHub.

This file is generated from a template. Edit the .tmpl file, not this file directly. Run scripts/gen-skill-docs.sh to regenerate after changes.

Pre-Development: State Check

Before starting development:

  1. Read .octo/STATE.md to verify Define phase complete
  2. Update STATE.md:
    • current_phase: 3
    • phase_position: "Development"
    • status: "in_progress"
# Verify Define phase is complete
if [[ -f ".octo/STATE.md" ]]; then
  define_status=$("${HOME}/.claude-octopus/plugin/scripts/octo-state.sh" get_phase_status 2)
  if [[ "$define_status" != "complete" ]]; then
    echo "⚠️ Warning: Define phase not marked complete. Consider running definition first."
  fi
fi

# Update state for Development phase
"${HOME}/.claude-octopus/plugin/scripts/octo-state.sh" update_state \
  --phase 3 \
  --position "Development" \
  --status "in_progress"

⚠️ EXECUTION CONTRACT (MANDATORY - CANNOT SKIP)

This skill uses ENFORCED execution mode. You MUST follow this exact sequence.

STEP 1: Detect Work Context (MANDATORY)

Analyze the user's prompt and project to determine context:

Knowledge Context Indicators:

  • Deliverable terms: "PRD", "proposal", "presentation", "report", "strategy document", "business case"
  • Business terms: "market entry", "competitive analysis", "stakeholder", "executive summary"

Dev Context Indicators:

  • Technical terms: "API", "endpoint", "function", "module", "service", "component"
  • Action terms: "implement", "code", "build", "create", "develop" + technical noun

Also check: Does project have package.json, Cargo.toml, etc.? (suggests Dev Context)

Capture context_type = "Dev" or "Knowledge"

Step 1b: Detect Dev Subtype (if Dev context)

When context_type is Dev, determine the subtype to inject domain-appropriate quality guidance into the prompt sent to providers. Append the matching supplement text after the user's prompt.

Subtype Trigger keywords Quality supplement
frontend-ui "page", "widget", "component", "UI", "HTML", "CSS", "form", "dashboard", "layout" See frontend-ui enrichment below.
cli-tool "CLI", "command-line", "terminal", "script", "flag", "argument" Help text via --help flag. Meaningful exit codes (0 success, 1 user error, 2 system error). Stdin/stdout/stderr used correctly. Argument validation with clear error messages.
api-service "API", "endpoint", "REST", "GraphQL", "gRPC", "server", "route" Input validation at boundaries. Consistent error response format. Auth/authz on every endpoint. Rate limiting consideration. OpenAPI/schema documentation.
infra "deploy", "terraform", "docker", "CI", "pipeline", "Kubernetes", "helm" Idempotent operations. Secrets never hardcoded. Rollback path documented. Health checks included.
data "ETL", "pipeline", "migration", "schema", "database", "SQL" Idempotent migrations. Backup/rollback strategy. Data validation at ingestion.
general Default if no subtype matches No supplement — use base implementer persona only.

Read the full file on GitHub · 843 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. 2d ago First seen · 843 lines · 57 tokens per session scan A 65046542408e

Subscribe to this mod's changes

flow-develop is a skill published in the GitHub repository CES-Ltd/Lumi (30 stars, last pushed 3mo ago), licensed MIT. It adds 57 tokens to every session and 7,294 once invoked, about $0.0003 per session on Opus 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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