context-authoring

context-authoring is a skill for Claude Code, Codex from event4u-app/agent-config. It costs 33 tokens per session (2,167 once invoked), scanned A, original, MIT.

A guided skill for filling project context files about authentication, tenant boundaries, data sensitivity, deployment order, and monitoring. These files record project facts that other review skills can use.

In plain words
What is it for?
Use it to document roles and permissions, how customer data is separated, sensitive data, deployment dependencies, and observability details.
Why use it?
It helps replace empty templates with project-specific information before security, data, or deployment reviews depend on them.

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/event4u-app/agent-config/context-authoring
Any agent
npx skills add event4u-app/agent-config --skill context-authoring
Clone the repo
git clone --depth 1 https://github.com/event4u-app/agent-config

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 context-authoring

README.md
[![agentmods](https://agentmods.dev/badge/skills/event4u-app/agent-config/context-authoring.svg)](https://agentmods.dev/skills/event4u-app/agent-config/context-authoring)
Your own site
<a href="https://agentmods.dev/skills/event4u-app/agent-config/context-authoring"><img src="https://agentmods.dev/badge/skills/event4u-app/agent-config/context-authoring.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,167 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 5.1 $0.00033 $0.02167
Opus 5 $0.00016 $0.01084
Sonnet 5 $0.00007 $0.00433
Haiku 4.5 $0.00003 $0.00217

Measured 5d ago against content hash 0bae180ab2e5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

context-authoring 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 5d 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.

src/skills/context-authoring/SKILL.md · 197 lines

How it starts

The opening of the file, as written. The whole thing — 197 lines — stays where its author put it; the contents beside it link to each section on GitHub.

context-authoring

When to use

Use this skill when:

  • A new project has been scaffolded and the agents/settings/contexts/ files are still template stubs from event4u/agent-config.
  • The user asks "help me fill in the auth model context", "set up tenant boundaries", or similar knowledge-layer work.
  • A reviewer skill (authz-review, data-flow-mapper, migration-safety, multi-tenant-boundary-review, secrets-and-config-review) reports "I cannot proceed — agents/settings/contexts/<file>.md is still a template".
  • After a significant architecture change that invalidates one of the five context files.

Do NOT use when:

  • Writing a regular roadmap or feature doc — use agent-docs-writing.
  • Creating a generic context document that does not map to one of the five knowledge-layer templates — use context-create.
  • Filling in the engineering-memory YAML files (domain-invariants.yml, etc.) — use /memory-add.

The five files

File What it answers Who reads it
auth-model.md Roles, permission model, impersonation, known exceptions authz-review, judge-security-auditor, threat-modeling
tenant-boundaries.md Tenancy type, scope propagation, known cross-tenant paths multi-tenant-boundary-review, blast-radius-analyzer, judge-security-auditor
data-sensitivity.md Field classification, masking rules, log-safe types data-flow-mapper, logging reviewers
deployment-order.md Migration strategy, feature flags, rollback plan migration-safety, judge-bug-hunter, release reviewers
observability.md Error tracking, log channels, metrics, known alerts deploy reviewers, bug-analyzer, incident mode

The templates ship in src/agent-src/templates/contexts/ and are copied into agents/settings/contexts/ by the installer.

Procedure: context-authoring

Step 0: Inspect

  1. List agents/settings/contexts/ — which of the five files exist? Which still contain the <!-- Template shipped by event4u/agent-config. --> HTML comment?
  2. Ask the user which file to work on. Use numbered options:

Read the full file on GitHub · 197 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. 5d ago First seen · 197 lines · 33 tokens per session scan A 0bae180ab2e5

Subscribe to this mod's changes

context-authoring is a skill published in the GitHub repository event4u-app/agent-config (10 stars, last pushed today), licensed MIT. It adds 33 tokens to every session and 2,167 once invoked, about $0.0002 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.

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