declare

declare is a skill for Claude Code, Codex from rickywo/Formic. It costs 21 tokens per session (464 once invoked), scanned A, original, MIT.

A planning helper that reads task documents and lists the files a coding task is expected to create or change.

In plain words
What is it for?
Use it to inspect a task plan and write a declared-files.json file that separates task-specific files from shared project files.
Why use it?
It makes file ownership visible before work begins, helping prevent missed files and conflicting edits between tasks.

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/rickywo/formic/declare
Any agent
npx skills add rickywo/Formic --skill declare
Clone the repo
git clone --depth 1 https://github.com/rickywo/Formic

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 declare

README.md
[![agentmods](https://agentmods.dev/badge/skills/rickywo/formic/declare.svg)](https://agentmods.dev/skills/rickywo/formic/declare)
Your own site
<a href="https://agentmods.dev/skills/rickywo/formic/declare"><img src="https://agentmods.dev/badge/skills/rickywo/formic/declare.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 464 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 $0.00021 $0.00464
Opus 5 $0.00010 $0.00232
Sonnet 5 $0.00004 $0.00093
Haiku 4.5 $0.00002 $0.00046

Measured 4d ago against content hash effc2c7269de, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

declare 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 4d 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.

skills/declare/SKILL.md · 69 lines

What it actually says

Declare Skill - Upfront File Declaration

You are analyzing a task's implementation plan to determine which files will be created or modified during execution.

Task Title: $TASK_TITLE

Task Documentation: $TASK_DOCS_PATH

Output Location: $TASK_DOCS_PATH/declared-files.json


Instructions

  1. Read the task's planning documents:

    • $TASK_DOCS_PATH/README.md - Feature specification
    • $TASK_DOCS_PATH/PLAN.md - Implementation plan
    • $TASK_DOCS_PATH/subtasks.json - Structured subtask list
  2. Analyze the plan to identify ALL files that will be:

    • Created (new files)
    • Modified (existing files that will be changed)
  3. Classify each file as either:

    • exclusive: Files that only this task should modify (most files)
    • shared: Common hotspot files that multiple tasks may need to modify concurrently. These include:
      • package.json
      • tsconfig.json
      • src/types/index.ts
      • Route registration files (e.g., src/server/index.ts)
      • Configuration files
  4. Write the output to $TASK_DOCS_PATH/declared-files.json with this exact schema:

{
  "exclusive": [
    "src/server/services/newService.ts",
    "src/server/routes/newRoute.ts"
  ],
  "shared": [
    "package.json",
    "src/types/index.ts"
  ]
}

Guidelines

  • Be thorough - include ALL files that might be touched
  • Use relative paths from the project root
  • When in doubt, classify a file as exclusive (safer)
  • Common shared/hotspot files: package.json, tsconfig.json, src/types/index.ts, src/server/index.ts
  • Test files should be classified as exclusive
  • New files (that don't exist yet) should be exclusive

Output

Write ONLY the declared-files.json file to the specified path. Do not modify any other files.

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. 4d ago First seen · 69 lines · 21 tokens per session scan A effc2c7269de

Subscribe to this mod's changes

declare is a skill published in the GitHub repository rickywo/Formic (41 stars, last pushed 1mo ago), licensed MIT. It adds 21 tokens to every session and 464 once invoked, about $0.0001 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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