project-context-migration

A procedure for reviewing scattered repository notes and deciding which information belongs in an agent's project context. It separates task notes, trusted references, material to leave in place, and stale material that may be archived.

In plain words
What is it for?
Use it to inventory existing notes, classify them, and move only appropriate working context into the project-context structure.
Why use it?
It prevents old or unrelated documentation from being treated as current instructions or shared project facts.

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/perhapsspy/project-legibility/project-context-migration
Any agent
npx skills add perhapsspy/project-legibility --skill project-context-migration
Clone the repo
git clone --depth 1 https://github.com/perhapsspy/project-legibility

Made for: Claude Code, Codex.

Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 474 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 $0.00027 $0.00474
Opus 5 $0.00014 $0.00237
Sonnet 5 $0.00005 $0.00095
Haiku 4.5 $0.00003 $0.00047

Measured 3d ago against content hash ef6647c6bcf3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

project-context-migration 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 3d 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.

plugins/project-legibility/skills/project-context-migration/SKILL.md · 34 lines

How it starts

The opening of the file, as written. The whole thing — 34 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Project Context Migration

Purpose

Audit scattered repository docs and notes before moving the right working context into project-context. Apply the main project-context contract first. Use this companion only for existing legacy context, not to initialize an empty repo.

Classification

  • TASK: material that belongs in agent working context but is task-local, historical, exploratory, unresolved, or not trusted as current truth.
  • REFERENCE: current trusted rules, facts, or shared contracts another task can directly reuse.
  • LEAVE: product/user/team docs, human-facing top-level notes, and origin/about/repository narrative that do not belong in agent working context.
  • ARCHIVE: stale duplicates or superseded docs only when cleanup is authorized; it is not a default project-context destination.

LEAVE is a valid result. If membership in agent working context is uncertain, use LEAVE; if membership is clear but current truth or adoption is uncertain, use TASK. Do not promote content to REFERENCE merely because it is technical.

Migration Contract

Inventory candidate sources read-only, then resolve each source or separable part to a classification, currentness, existing owner, target or leave decision, and reason. Persist this map in one dated migration task before rewriting, moving, archiving, or deleting content.

Apply only the resolved map. Preserve existing canonical and human-facing owners; merge overlapping working context into one preferred task or reference owner. Rewrite current reference truth instead of copying timeline noise, and keep comparison detail, rationale, uncertainty, and change trace in the migration task.

Preserve shipped authority and human-facing documents outside project-context. Normalize saved paths to repo-relative paths or stable placeholders. If an item lacks a trustworthy date, use the migration date and record that uncertainty in its task.

Run the main runtime-shape checker, then reconcile the map and spot-review representative or high-risk classifications and owner transitions. Shape success does not prove migration correctness.

Read the full file on GitHub · 34 lines

Files

What ships with it

1 file 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. 3d ago First seen · 34 lines · 27 tokens per session scan A ef6647c6bcf3

Subscribe to this mod's changes

project-context-migration is a skill published in the GitHub repository perhapsspy/project-legibility (5 stars, last pushed 5d ago), licensed MIT. It adds 27 tokens to every session and 474 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 2026-08-31.