project-knowledge

project-knowledge is a skill for Codex from arctan303/creator.skill. It costs 55 tokens per session (946 once invoked), scanned A, original, MIT.

A process for keeping current project knowledge, decisions, conventions, limitations, and task status up to date. It records changes in the appropriate authoritative documentation.

In plain words
What is it for?
Use it during authorized knowledge updates, repository orientation, documentation reconciliation, and cleanup.
Why use it?
It prevents important project context from becoming outdated or being duplicated in multiple places.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it during authorized knowledge updates, repository orientation, documentation reconciliation, and cleanup.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/arctan303/creator.skill/project-knowledge
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 arctan303/creator.skill --skill project-knowledge
Clone the repo
git clone --depth 1 https://github.com/arctan303/creator.skill

Made for: 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 project-knowledge

README.md
[![agentmods](https://agentmods.dev/badge/skills/arctan303/creator.skill/project-knowledge/github.svg)](https://agentmods.dev/skills/arctan303/creator.skill/project-knowledge)
Your own site
<a href="https://agentmods.dev/skills/arctan303/creator.skill/project-knowledge"><img src="https://agentmods.dev/badge/skills/arctan303/creator.skill/project-knowledge/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 project-knowledge

Your own site · 80×15
<a href="https://agentmods.dev/skills/arctan303/creator.skill/project-knowledge"><img src="https://agentmods.dev/badge/skills/arctan303/creator.skill/project-knowledge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 946 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 $0.00055 $0.00946
Opus 5.5 $0.00022 $0.00378
Sonnet 5.5 $0.00011 $0.00189
Haiku 4.5 $0.00006 $0.00095

Measured 7d ago against content hash a6be56750d1d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

project-knowledge 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 7d 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.

.agents/skills/project-knowledge/SKILL.md · 54 lines

How it starts

The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Project knowledge

Purpose

Keep the project's current state, effective expectations and active work easy to recover. Capture useful project conventions from ordinary collaboration without requiring a separate “remember this” request. Preserve one authoritative home for each rule and the evidence for changes.

Trigger

  • The user states or corrects a project design, development or release convention during an authorized task.
  • Implemented or verified work changes the relevant current-state entry, limitation or task status.
  • A capability or decision is replaced or removed, affecting current documentation or unfinished work.
  • The user requests repository orientation, documentation reconciliation, cleanup or migration. Orientation is read-only unless editing is also authorized.

Do not run a repository-wide sweep on every turn. Update only the affected scope at meaningful decisions, handoffs or milestones. A transient tool failure belongs in the task; a workflow defect belongs to self-evolver. New product choices still belong to the product/design skills.

Required context

  • Repository instructions, working-tree changes and the user's effective scope, authorization and restrictions.
  • Registered entrypoints in .creator/docs-state.json, or verified equivalent README, MANUAL or PROJECT-CONTEXT files.
  • The affected current rules, relevant active tasks and evidence; historical material only when needed to resolve a replacement or source.
  • The user's actual statement or a stable task/decision reference. Distinguish it from an inference and from observed implementation.

Workflow

  1. Identify the narrow knowledge change and its existing owner. Reuse Design-Principles, Design-Brief, Development-Release or their equivalents; do not create a universal memory file containing copies of them.
  2. Classify the information as an explicit project convention, a verified project fact, an inferred candidate, or a task-specific authorization/constraint. Preserve its scope and source. Clear project conventions can be captured immediately; frequency is not a prerequisite. Inferences remain candidates and do not become user decisions through repetition or silence.
  3. Reconcile current clauses in place, including affected references and exceptions. Record what replaces or withdraws the old clause. Retain the original historical outcome and unknowns; do not merely append an opposite rule.
  4. For affected tasks, decide current applicability separately from historical implementation, validation, review and release. Removed capabilities close obsolete validation obligations as retired, not passed. For partial replacement, retain the still-effective outcomes and obligations with their actual evidence.
  5. Update verified current facts and relevant active-plan links after implementation or verification. Keep unimplemented requirements explicit. Use a small entrypoint/index with links; keep detailed decisions, commands and evidence in their existing homes.
  6. At an authorized cleanup or milestone, consolidate only the affected material, preserve unique evidence and repair navigation. Do not delete a document because it is old, large or unreferenced. Do not alter concurrent work, sibling projects or global preferences without scope authorization.
  7. Check relevant structure and links, then review the meaning of the changes: no invented decisions, resurrected retired tasks, lost live requirements or inflated evidence. Follow the user's language and the existing document's language. Briefly report the actual update and any material uncertainty.

Read the full file on GitHub · 54 lines

Files

What ships with it

2 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. 7d ago First seen · 54 lines · 55 tokens per session scan A a6be56750d1d

Subscribe to this mod's changes

project-knowledge is a skill published in the GitHub repository arctan303/creator.skill (19 stars, last pushed 7d ago), licensed MIT. It adds 55 tokens to every session and 946 once invoked, about $0.0002 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 2026-10-15.

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