add-template

A reusable text template for plain specification files. It uses Liquid, a template language, to insert the same structure into multiple files with different values.

In plain words
What is it for?
Use it for shared specification patterns whose names, paths, or settings vary between files.
Why use it?
It avoids copying and maintaining the same specification text in several places. Updating one template can keep all included versions consistent.

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/plainlang/plain-forge/add-template
Any agent
npx skills add plainlang/plain-forge --skill add-template
Clone the repo
git clone --depth 1 https://github.com/plainlang/plain-forge

Made for: Claude Code, Codex.

Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 655 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 $0.00041 $0.00655
Opus 5 $0.00020 $0.00328
Sonnet 5 $0.00008 $0.00131
Haiku 4.5 $0.00004 $0.00065

Measured 2d ago against content hash 535570d80f82, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

add-template 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 2d 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.

forge/skills/add-template/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Add Template

Always use the skill load-plain-reference to retrieve the ***plain syntax rules — but only if you haven't done so yet.

Templates use Liquid syntax ({% include %}) to reuse the same spec content across multiple .plain files. Each inclusion can pass different parameters, producing tailored output from a single source. This is distinct from import and requires — templates are about textual reuse with parameterization, not module dependencies.

When to Use Templates

  • The exact same spec structure is needed in more than one .plain file.
  • The reused content differs only in specific values (names, paths, config) that can be parameterized.
  • You want a single source of truth for a pattern that appears in multiple modules.

Format

Including a Template

Use {% include %} with the template path and parameters:

{% include "console_app_template.plain", main_file_name: "app.py", app_name: "MyApp" %}

Parameters are passed as key-value pairs after the template path. Inside the template, parameters are accessed using Liquid variable syntax ({{ main_file_name }}).

Writing a Template

Templates live in the template/ directory. Only variables ({{ variable_name }}) are supported — conditionals, loops, and other Liquid features are not available:

***definitions***
- :{{ app_name }}MainFile: is the entry point file for :{{ app_name }}:.

***implementation reqs***
- :{{ app_name }}MainFile: should be called "{{ main_file_name }}".

Workflow: Including an Existing Template

  1. Check the template/ directory to see what templates are available.
  2. Read the template to understand what parameters it expects and what content it produces.
  3. Add the {% include %} statement to the target .plain file with the correct parameters.
  4. Verify that the expanded content does not introduce concept name collisions or duplicate sections.

Workflow: Creating a New Template

  1. Identify the repeated pattern — find spec content that is duplicated (or will be duplicated) across multiple .plain files.
  2. Extract the common content into a new .plain file in the template/ directory.
  3. Parameterize the differences — replace the varying parts with Liquid variables.
  4. Update the original files to use {% include %} instead of the duplicated content.

Read the full file on GitHub · 66 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. 2d ago First seen · 66 lines · 41 tokens per session scan A 535570d80f82

Subscribe to this mod's changes

add-template is a skill published in the GitHub repository plainlang/plain-forge (55 stars, last pushed 4d ago), licensed MIT. It adds 41 tokens to every session and 655 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 2026-08-30.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

next-cache-components-adoption

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…

vercel/next.js · 95 tokens

babysit-pr

Babysit a GitHub pull request after creation by continuously polling review comments, CI checks/workflow runs, and mergeability state until the PR is merged/closed or user help is required. Diagnose failures, retry likely flaky failures up to 3 times, auto-fix/push branch-related issues when appropriate, and keep…

openai/codex · 114 tokens

imagegen

Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, or transparent-background cutouts. Use when Codex should create a brand-new image, transform an existing image, or derive visual variants from references, and the output…

openai/codex · 113 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens

next-cache-components-optimizer

Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to green, one verified route at a time; the shipped test then…

vercel/next.js · 170 tokens