oarx-api-lookup

oarx-api-lookup is a skill for Claude Code from dantte-lp/oarx-docs-mcp. It costs 72 tokens per session (599 once invoked), scanned A, original, MIT.

A documentation lookup tool for Autodesk ObjectARX APIs, including C++, .NET, and AutoLISP interfaces. ObjectARX is Autodesk's programming framework for extending AutoCAD.

In plain words
What is it for?
Use it to find documentation for classes, functions, namespaces, and programming tasks such as creating custom entities, iterating through polyline vertices, or handling transactions.
Why use it?
It saves time searching through large AutoCAD reference libraries and helps match a question to the relevant programming guide. It can look up an exact API name or search by concept.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the oarx-docs plugin — 4 skills, 2 commands, 1 hook shipped together

Good fit Use it to find documentation for classes, functions, namespaces, and programming tasks such as creating custom entities, iterating through polyline vertices, or handling transactions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dantte-lp/oarx-docs-mcp/oarx-api-lookup
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 dantte-lp/oarx-docs-mcp --skill oarx-api-lookup
Clone the repo
git clone --depth 1 https://github.com/dantte-lp/oarx-docs-mcp

Made for: Claude Code.

Or install oarx-docs, the plugin that ships this one along with the rest of its 4 skills, 2 commands, 1 hook.

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 oarx-api-lookup

README.md
[![agentmods](https://agentmods.dev/badge/skills/dantte-lp/oarx-docs-mcp/oarx-api-lookup/github.svg)](https://agentmods.dev/skills/dantte-lp/oarx-docs-mcp/oarx-api-lookup)
Your own site
<a href="https://agentmods.dev/skills/dantte-lp/oarx-docs-mcp/oarx-api-lookup"><img src="https://agentmods.dev/badge/skills/dantte-lp/oarx-docs-mcp/oarx-api-lookup/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 oarx-api-lookup

Your own site · 80×15
<a href="https://agentmods.dev/skills/dantte-lp/oarx-docs-mcp/oarx-api-lookup"><img src="https://agentmods.dev/badge/skills/dantte-lp/oarx-docs-mcp/oarx-api-lookup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 599 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 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 $0.00072 $0.00599
Opus 5 $0.00036 $0.00300
Sonnet 5 $0.00014 $0.00120
Haiku 4.5 $0.00007 $0.00060

Measured 9d ago against content hash 11965e629a1f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

oarx-api-lookup 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 9d 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.

plugin/skills/oarx-api-lookup/SKILL.md · 63 lines

What it actually says

ObjectARX API Lookup

Look up ObjectARX 2026 documentation using the oarx-docs MCP server tools.

MCP Tools Available

Three tools from the oarx-docs MCP server:

lookup_class — Exact name match

Use when you know the class or function name:

lookup_class("AcDbLine")
lookup_class("AcDbLine", guide="arxref")
lookup_class("acedCommand")
lookup_class("vlax-ename->vla-object", guide="AutoCAD-AutoLISP-Reference")

Returns all documentation chunks for the matched class/function. Tries exact title match first, falls back to semantic search.

search_docs — Semantic search

Use for conceptual queries or when you do not know the exact name:

search_docs("how to create a custom entity")
search_docs("polyline vertex iteration", guide="arxdev")
search_docs("transaction commit rollback", guide="arxmgd_dev", limit=5)

Returns ranked results with relevance scores.

list_guides — Available guides

Returns all 22 documentation guides. Use to discover which guide covers your topic.

Guide Selection

Language API Reference Developer Guide
C++ arxref arxdev
.NET (C#) arxmgd arxmgd_dev
AutoLISP AutoCAD-AutoLISP-Reference AutoCAD-AutoLISP
ActiveX/VBA AutoCAD-ActiveX-Reference AutoCAD-ActiveX
JavaScript AutoCAD-JavaScript-Reference AutoCAD-JavaScript
DXF format AutoCAD-DXF
Customization AutoCAD-Customization
Migration arxmgr
Interop (C++/.NET) arxiop

Lookup Workflow

  1. Known class/function namelookup_class("ExactName", guide="best_guide")
  2. Concept or patternsearch_docs("description", guide="best_guide", limit=5)
  3. Unsure which guide → omit the guide parameter to search all 22 guides
  4. Need more context → follow up with lookup_class on specific classes found in search results
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. 9d ago First seen · 63 lines · 72 tokens per session scan A 11965e629a1f

Subscribe to this mod's changes

oarx-api-lookup is a skill published in the GitHub repository dantte-lp/oarx-docs-mcp (0 stars, last pushed 6mo ago), licensed MIT. It adds 72 tokens to every session and 599 once invoked, about $0.0004 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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