plimeor/meta-context-engineering-global

Global Context Engineering

Goal

Maintain the user's global rules file as a small, durable context layer for behavior that should apply across tasks, projects, and sessions.

Success Criteria

A good result:

• Classifies each candidate or existing rule as global, project, skill, tooling, task context, or reject.
• Preserves the user's original intent and scope.
• Proposes directly applicable text only for rules that belong in the global layer.
• Identifies insertion, replacement, deletion, or migration targets.
• Stops once the core classification and concrete edits are justified.

Constraints

This skill covers global rules files only, such as ~/.claude/CLAUDE.md, global AGENTS.md, or equivalent files.

It does not cover repo-local AGENTS.md / CLAUDE.md, new-project context setup, current-task context packing, session compaction, skill routing fixes, or tooling enforcement. Route those to meta-context-engineering-project or a more specific skill.

When the user explicitly asks to update, modify, or optimize a global rules file, treat that as authorization to edit the requested file. Do not extend that authorization to installation sync, manifests, lockfiles, commits, remote services, project-local files, or other global state.

Treat must, always, never, and only as reserved for true invariants: safety, exact output contracts, irreversible side effects, and required fields. Preserve artifact intent, length, structure, and boundary unless the user asks for a broader rewrite.

Input Routing

For collaboration friction, classify the root cause before proposing global text: global rule, project context, skill protocol, tooling, task evidence, or model capability boundary.

For a proposed rule, read the current global rules file, classify each candidate, then provide replacement text and insertion location only for candidates that belong globally.

For an existing global file review, audit each rule as keep, shorten, delete, or migrate. Provide a rewritten file only when the user asked for a rewrite.

For extraction from files, conversation history, or research, collect only the requested context, extract global candidates, and classify them before proposing edits.

Evidence Budget

Read the directly relevant artifact first: the target global rules file, candidate rule text, or user-provided friction evidence.

Fetch current external prompt guidance only when:

• the user asks to align with current model guidance
• the existing skill cites external standards and the task is to update or evaluate those standards
• the answer would otherwise rely on an unsupported factual claim about model behavior

Useful references when needed:

• https://developers.openai.com/api/docs/guides/prompt-guidance?model=gpt-5.5
• https://platform.claude.com/docs/en/build-with-claude/prompt-engineering/claude-prompting-best-practices
• https://code.claude.com/docs/en/best-practices

Stop retrieval once the core classification and proposed text are supported. Do not search again for phrasing, examples, or nonessential background.

Evaluation Rules

For each candidate rule, ask:

1. Cross-task: Does it hold across most task types?
2. Cross-project: Does it avoid repo, stack, team, or workflow specifics?
3. Cross-session: Is it worth loading in every future conversation?
4. Non-obvious: Would the model fail to infer it from the request, code, or local context?
5. Observable: Can violation be seen in output or actions?
6. Non-redundant: Does it differ from default model behavior and existing rules?
7. Compact: Is it the shortest effective expression?
8. Motivated: Does it explain why when motivation changes behavior?
9. Outcome-bound: Does it define result, success criteria, and stop conditions instead of piling on process?
10. Consistent: Does it avoid conflict with existing global rules?

Prefer rules that define outcomes, constraints, evidence behavior, final output shape, or stopping conditions. Reject rules that are project-local, temporary, tool-enforceable, redundant, or primarily a specialized workflow that belongs in a skill.

Validation

For read-only review, state which files or sources were read.

After edits, run the smallest relevant checks:

• Inspect the final diff for accidental scope expansion.
• Verify no project-local file, sync state, lockfile, commit, or remote state changed unless requested.
• When editing a skill, confirm the frontmatter name: still matches its parent directory.

If validation cannot run, say why and name the next best check.

Output

Default output:

1. Key findings or classifications, ordered by impact.
2. Concrete global-rule edits, with replacement text and insertion location.
3. Non-global items and their correct layer.
4. Rejected or intentionally unchanged content.

Omit empty sections. For review requests, lead with findings. For rewrite requests, include directly applicable text.

Stop Rules

Stop when the requested classification, edit text, evidence status, and non-global routing are clear.

Do not continue pruning, syncing, committing, installing, or improving adjacent skills just because they look related. Ask one narrow question only when missing information would change the target file, authorization boundary, or classification result.