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object

object is a skill for Claude Code, Codex from antoinebou12/uml-mcp. It costs 50 tokens per session (621 once invoked), scanned A, a copy of activity, MIT.

A writing guide for object diagrams, which show particular instances of classes and the relationships between those instances.

In plain words
What is it for?
Use it to show objects such as a specific user, order, or service and the links between them in PlantUML through uml-mcp.
Why use it?
It makes concrete system examples easier to describe than a general class definition diagram.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 109repo +1 yesterday A scan 50 tokens copy · 89% MIT

Good fit Use it to show objects such as a specific user, order, or service and the links between them in PlantUML through uml-mcp.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/antoinebou12/uml-mcp/object
View source ↗ antoinebou12/uml-mcp antoinebou12.github.io
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.

Any agent
npx skills add antoinebou12/uml-mcp --skill object
Clone the repo
git clone --depth 1 https://github.com/antoinebou12/uml-mcp

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 object

README.md
[![agentmods](https://agentmods.dev/badge/skills/antoinebou12/uml-mcp/object/github.svg)](https://agentmods.dev/skills/antoinebou12/uml-mcp/object)
Your own site
<a href="https://agentmods.dev/skills/antoinebou12/uml-mcp/object"><img src="https://agentmods.dev/badge/skills/antoinebou12/uml-mcp/object/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for object

Your own site · 80×15
<a href="https://agentmods.dev/skills/antoinebou12/uml-mcp/object"><img src="https://agentmods.dev/badge/skills/antoinebou12/uml-mcp/object.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 621 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 89% copy Near-identical to another mod 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 $0.00050 $0.00621
Opus 5.5 $0.00020 $0.00248
Sonnet 5.5 $0.00010 $0.00124
Haiku 4.5 $0.00005 $0.00062

Measured 14d ago against content hash edd1ed824261, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

object 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 14d 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.

Origin

This is a copy

89% identical to activity — 51 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.skill/skills/object/SKILL.md · 71 lines

What it actually says

object diagram (uml-mcp)

diagram_type: object
Backend: plantuml
Output formats: png, svg, pdf, txt, base64

Shows instances of classes and their relationships

Load the workflow skill uml-mcp-diagrams for URL-first replies, progressive discovery, and which MCP tool to call. This file is notation only; it does not add an MCP tool.

Themes

Pass theme to generate_uml / generate_uml_image (PlantUML built-in name). The server injects !theme <name> after @startuml when the source has no !theme yet.

Recommended: cerulean, materia, sketchy, cyborg, plain, aws-orange, blueprint, sandstone.

Match the page background (also see MCP prompt diagram_theme):

  • light / white: cerulean, materia, plain, sketchy, sandstone
  • dark / black: blueprint, cyborg, black-knight, carbon-gray, crt-green
  • B&W / print: plain, sketchy, sketchy-outline, mimeograph, lightgray

Or embed in source:

@startuml
!theme cerulean
' … diagram …
@enduml

Starter template

@startuml
object user1 as "User"
object sys1 as "System"
user1 --> sys1: uses
@enduml

Example

@startuml
object order1 as "Order #1"
object item1 as "Item A"
object item2 as "Item B"
object customer as "Customer"
order1 --> item1: contains
order1 --> item2: contains
order1 --> customer: placed by
@enduml

Render with uml-mcp

  1. Set diagram_type to object exactly.
  2. Call validate_uml when the source is untrusted (prefer strict: true for Mermaid sequence).
  3. Call generate_uml, generate_uml_image (chat PNG), or generate_uml_batch.
  4. Pass theme when this skill's Themes section lists supported values.
  5. Surface the returned url / playground (see the workflow skill).

Confirm formats with uml://formats or list_diagram_types when unsure.

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. 14d ago First seen · 71 lines · 50 tokens per session scan A edd1ed824261

Subscribe to this mod's changes

object is a skill published in the GitHub repository antoinebou12/uml-mcp (109 stars, last pushed yesterday), licensed MIT. It adds 50 tokens to every session and 621 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 89% identical to activity, differing in 51 lines, and is treated as a copy.

mcpuml
Related

object compared with skills from other repositories

object next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
objectantoinebou12/uml-mcpSkill109yesterdayMITA50Claude Code, Codex
detailed-designpan94u/forgeSkill405d agononeA27Claude Code
writing-skillstakaakit/superpowers-umlSkill121mo agononeA20Claude Code
brainstormingtakaakit/superpowers-umlSkill121mo agononeA37Claude Code
finishing-a-development-branchtakaakit/superpowers-umlSkill121mo agononeA27Claude Code
systematic-debuggingtakaakit/superpowers-umlSkill121mo agononeA21Claude Code
test-driven-developmenttakaakit/superpowers-umlSkill121mo agononeA17Claude Code