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Agent skill

Forgecad Grade Model

by ForgeCAD in ForgeCAD/forgecad-public-kit

Grade a ForgeCAD or CAD-as-code model against a requirement, brief, prompt, reference, or acceptance criteria with evidence and a 0-10 score.

MITAuto-check passedProduct & Project Management

Install Forgecad Grade Model

skills CLI
$ npx skills add ForgeCAD/forgecad-public-kit --skill forgecad-grade-model -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install ForgeCAD/forgecad-public-kit forgecad-grade-model --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/ForgeCAD/forgecad-public-kit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/forgecad-grade-model .claude/skills/forgecad-grade-model && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
forgecad-grade-model
GitHub stars
941
Token cost
~1.3k tokens
SKILL.md length
627 words
Files
2
Skills in repo
10
Repo updated
First seen
Licence
MIT

At a glance

Grade a ForgeCAD or CAD-as-code model against a requirement, brief, prompt, reference, or acceptance criteria with evidence and a 0-10 score.

  • Works in 6 steps: Extract the requirement into a… → Run the model: forgecad run .forge.js… → Render at least iso, front, right, top… → …
  • Tasks that involve User stories
  • SKILL.md covers Workflow, Rubric, Evidence Caps and Report Format, plus 1 more section
  • Calls node

What it does

Forgecad Grade Model is an agent skill from ForgeCAD/forgecad-public-kit. Grade a ForgeCAD or CAD-as-code model against a requirement, brief, prompt, reference, or acceptance criteria with evidence and a 0-10 score.

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).

It sits in Product & Project Management, covering User stories. The repository describes itself as: Public companion kit for ForgeCAD: examples, agent skills, docs links, and issue tracking. The hosted CAD app and core source live elsewhere. The licence is MIT.

When your agent uses it

  • Tasks that involve User stories

Example prompts

  • “/forgecad-grade-model”

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Extract the requirement into a checklist, must-haves separate from nice-to-haves. If the brief is vague, grade the most reasonable literal…
  2. Run the model: forgecad run .forge.js (in the ForgeCAD repo use the local build, node dist-cli/forgecad.js run ...). If it fails to…
  3. Render at least iso, front, right, top to a scratch dir; add views (back, bottom, close-up, section) when the model is asymmetric, hollow…
  4. Open and look at every PNG — never score from command output alone. Check silhouette, proportions, required features, part boundaries…
  5. Inspect whenever hidden internals, fit, wall thickness, or assembly behavior are central to the brief — grading without inspecting them…
  6. Score: fill the rubric, apply caps, give a final 0-10 in whole or .5 increments. Unknowns count against the score.

What it can do on your machine

Read from SKILL.md and the folder at commit 7523f68. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • node

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Forgecad Grade Model loads about 1.3k tokens when it runs. Until then it costs about 41 tokens; SKILL.md has 627 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~41
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from ForgeCAD/forgecad-public-kit at commit 7523f68, republished under its MIT licence (© ForgeCAD). 627 words, ~1,294 tokens.

Download SKILL.mdSave it as .claude/skills/forgecad-grade-model/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
forgecad-grade-model
description
Grade a ForgeCAD or CAD-as-code model against a requirement, brief, prompt, reference, or acceptance criteria with evidence and a 0-10 score.
forgecad-public
true

Grade Model

Grade the delivered model against the requirement, not against what could be fixed later. Never edit the model unless the user explicitly requests repairs — then record the baseline grade first, change, and re-grade.

Workflow

  1. Extract the requirement into a checklist, must-haves separate from nice-to-haves. If the brief is vague, grade the most reasonable literal interpretation and mark unverifiable items Unknown.
  2. Run the model: forgecad run <model>.forge.js (in the ForgeCAD repo use the local build, node dist-cli/forgecad.js run ...). If it fails to execute, stop and apply the caps.
  3. Render at least iso, front, right, top to a scratch dir; add views (back, bottom, close-up, section) when the model is asymmetric, hollow, mechanical, or likely to hide mistakes.
  4. Open and look at every PNG — never score from command output alone. Check silhouette, proportions, required features, part boundaries, interfaces, and whether the model reads as the requested artifact from more than one angle.
  5. Inspect whenever hidden internals, fit, wall thickness, or assembly behavior are central to the brief — grading without inspecting them caps the score. Delegate evidence choice, commands, and manifest reading to the forgecad-inspect-model skill. Findings (unexpected collisions, thin regions, floating bodies, wrong component counts) are evidence, not warnings to wave away.
  6. Score: fill the rubric, apply caps, give a final 0-10 in whole or .5 increments. Unknowns count against the score.

Rubric

DimensionPointsWhat To Look For
Requirement fit4Satisfies the stated must-haves, captures the intended object/function, no drift into a generic substitute.
Geometric completeness2Correct silhouette, proportions, visible details, part boundaries, internal structure when required, no missing major components.
Mechanical/manufacturing plausibility2Believable materials/process, real interfaces, clear load paths, fasteners/seats/clearances where needed, no impossible assembly.
Validation health1Runs cleanly, renders from multiple views, targeted inspections reveal no major unaddressed issues.
Code/model quality1Parametric clarity, readable organization, meaningful names, no debug junk, appropriate ForgeCAD APIs.

Anchors: 9-10 = evidence-backed match for the brief; 7-8 = recognizable and mostly complete, fixable gaps; 5-6 = main idea only; below 5 = broken or loosely related.

Show full SKILL.md (286 more words)Show less

Evidence Caps

Maximum scores, applied after the rubric:

  • Model does not execute: max 2.
  • Executes but cannot be rendered: max 4.
  • No rendered images visually inspected: max 5.
  • Only one flattering view inspected: max 6.
  • A must-have requirement is absent: max 6.
  • Visually recognizable but physically impossible for the requested use: max 6.
  • Internals, fit, walls, or assembly central to the brief but uninspected: max 7.
  • Multi-part assembly violates the ForgeCAD component model — sibling imports, assembly-space coordinates inside parts, structural translate() placement, missing connector mates, or parent/child data flow confusion: max 7; max 6 when the violation makes the assembly brittle or mechanically wrong.
  • Inspection finds unexpected collisions, floating bodies, critical thin walls, or wrong connectivity: max 6; max 5 when the defect invalidates the main function.
  • Delivered as a finished product/prototype but presented with default flat lighting (no scene() rig), a generically colorful or material-false palette, or teaching-diagram styling: max 8. Does not apply when the brief asks for a blockout or bare technical study.
  • Any score relying on an assumption the evidence cannot verify: mark it Unknown, never score above 8.

Report Format

markdown
Score: N / 10

Requirement checklist:
| Item | Result | Evidence |
| --- | --- | --- |
| ... | Pass/Partial/Fail/Unknown | render/inspection/file evidence |

Evidence reviewed: run outcome; views inspected; inspection highlights.
Why this score: decisive strengths and defects.
Caps applied: list, or `None`.
Next fixes: the 2-5 highest-leverage improvements.

Grading Rules

  • A beautiful render with missing functional geometry is not a high score.
  • Grade the default returned model unless the user names a parameter set or variant.
  • No points for comments, labels, or intentions absent from the geometry.
  • Decorative screws, floating labels, and teaching-diagram callouts are not real mechanical interfaces.
  • For multi-part assemblies, require the component model: parts build locally at origin, expose connectors/metadata, the parent positions them, and inter-part data flows through parent props and returned metadata.
  • Cite which render or inspection finding drove the grade.
  • When comparing models, use identical checklist, cameras, inspection evidence, and caps for all.

© ForgeCAD, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in skills/forgecad-grade-model of ForgeCAD/forgecad-public-kit.

  • SKILL.md
  • agents/openai.yaml

Open the folder on GitHubat commit 7523f68

Compare with similar skills

Forgecad Grade Model next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

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Categories

Questions about Forgecad Grade Model

What does Forgecad Grade Model do?

Grade a ForgeCAD or CAD-as-code model against a requirement, brief, prompt, reference, or acceptance criteria with evidence and a 0-10 score. Forgecad Grade Model is an agent skill from ForgeCAD/forgecad-public-kit. Grade a ForgeCAD or CAD-as-code model against a requirement, brief, prompt, reference, or acceptance criteria with evidence and a 0-10 score.

When should I use Forgecad Grade Model?

Forgecad Grade Model fits situations like: tasks that involve User stories.

How do I install Forgecad Grade Model in Claude Code?

Run `npx skills add ForgeCAD/forgecad-public-kit --skill forgecad-grade-model -a claude-code`. Or copy the skill folder (skills/forgecad-grade-model in ForgeCAD/forgecad-public-kit) into .claude/skills/forgecad-grade-model in your project. Claude Code loads it when a task matches its description.

How do I install Forgecad Grade Model in Codex?

Run `npx skills add ForgeCAD/forgecad-public-kit --skill forgecad-grade-model -a codex`. Or copy the skill folder (skills/forgecad-grade-model in ForgeCAD/forgecad-public-kit) into .agents/skills/forgecad-grade-model in your project. Codex loads it when a task matches its description.

Can I use Forgecad Grade Model in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ForgeCAD/forgecad-public-kit --skill forgecad-grade-model -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/forgecad-grade-model, .gemini/skills/forgecad-grade-model, .github/skills/forgecad-grade-model and .opencode/skills/forgecad-grade-model in your project.

What does Forgecad Grade Model need to run?

Going by SKILL.md and its folder, Forgecad Grade Model needs the command-line tools its instructions call (node).

Does Forgecad Grade Model access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Forgecad Grade Model safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Forgecad Grade Model use?

Forgecad Grade Model is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Forgecad Grade Model use?

About 1.3k tokens (SKILL.md is roughly 5.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Forgecad Grade Model?

Skills that share tags, products or a category with Forgecad Grade Model: Developer Docs Audience Research (hashgraph-online/awesome-codex-plugins, 1.2k stars), User Story Writer (deanpeters/Product-Manager-Skills, 7.2k stars), Ralph Tui Create Beads (subsy/ralph-tui, 2.5k stars) and Agile Product Owner (alirezarezvani/claude-skills, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Forgecad Grade Model?

ForgeCAD (a GitHub organization) maintains it in ForgeCAD/forgecad-public-kit, which has 941 GitHub stars. The repository holds 10 skills in this directory. The repository was last updated on June 15, 2026.

Source: ForgeCAD/forgecad-public-kit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.