Borrowing it
Nothing to install: this file belongs to DaniGhosy/civil3d-mcp-civil3d-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/DaniGhosy/civil3d-mcp-civil3d-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/DaniGhosy/civil3d-mcp-civil3d-mcpWrote 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.
[](https://agentmods.dev/instructions/danighosy/civil3d-mcp-civil3d-mcp/claude-md)<a href="https://agentmods.dev/instructions/danighosy/civil3d-mcp-civil3d-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/danighosy/civil3d-mcp-civil3d-mcp/claude-md/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.
<a href="https://agentmods.dev/instructions/danighosy/civil3d-mcp-civil3d-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/danighosy/civil3d-mcp-civil3d-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.03953 | $0.03953 |
| Opus 5 | $0.01976 | $0.01976 |
| Sonnet 5 | $0.00791 | $0.00791 |
| Haiku 4.5 | $0.00395 | $0.00395 |
Grade A, and why
civil3d-mcp-civil3d-mcp CLAUDE.md 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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 213 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Guía para trabajar en este repo. Complementa a README.md (setup, tabla de acciones) y a
C_References/README.md (DLLs) — no los duplica.
Qué es esto
MCP de automatización para Autodesk Civil 3D. Dos procesos:
Asistente de IA ──stdio (MCP)── Servidor Node/TS ──TCP/JSON-RPC (8080)── Plugin C# dentro de Civil3D
- Servidor MCP (
src/, TypeScript/Node): expone tools MCP, valida input con Zod, reenvía cada acción al plugin como un método JSON-RPC. - Plugin C# (
plugin/Civil3dMcpPlugin/, .NET 8.0-windows): corre dentro de Civil3D, recibe el JSON-RPC, ejecuta contra la API real de Civil3D/AutoCAD.
Esta sesión de Claude Code (desarrollo) no tiene las herramientas civil3d_* cargadas — esas
solo existen en la sesión de asistente de IA que el usuario conecta contra el plugin ya corriendo
dentro de Civil3D (C3DMCPSTART). Para probar un cambio contra un dibujo real, el usuario debe
recompilar el plugin, recargarlo (NETLOAD) y probarlo desde esa otra sesión — no se puede
verificar aquí más allá de que compile.
Filosofía: primitivas, no comandos de negocio
En vez de un comando monolítico por tarea, se construyen primitivas atómicas reutilizables
(detectar, filtrar, leer propiedades, modificar, calcular) más comandos específicos por dominio.
Esto permite componer tareas no anticipadas de antemano combinando primitivas en el momento, en vez
de depender de que exista un comando exacto ya escrito. Las primitivas genéricas clave, todas en
plugin/Civil3dMcpPlugin/GenericObjectCommands.cs (tool civil3d_object):
resolve_location— ubicar CUALQUIER punto por coordenadas, click interactivo del mouse, o relativo a un objeto de referencia + offset. Diseñado para componerse con comandos de creación existentes, no como un "crear cualquier cosa" monolítico.get_properties/list_by_type— introspección genérica vía reflexión (GenericObjectCommands.SerializeSimpleProperties, reutilizado en ~8 dominios distintos).set_style_name— motor de estilos universal: cualquier objeto con una propiedadStyleNameescribible puede recibir un estilo por nombre; Civil3D resuelve el ObjectId internamente.EnsureLayerId(db, tr, layerName, colorIndex?)— crea la capa si no existe, devuelve suObjectId. Consolida 3 copias casi idénticas (inline en SurfaceCommands.cs, helper privado en ProfileCommands.cs, y la ausencia total del patrón en GeometryCommands.cs — causa raíz del bug deeKeyNotFoundreportado en pruebas en vivo). También expuesta comoensure_layer. Usarla siempre que se vaya a asignarEntity.Layera un nombre que podría no existir todavía.delete_entity/move_entity/copy_entity/rotate_entity/get_entity_bounds/set_layer/list_layers— primitivas genéricas sobre cualquierEntitypor handle (post-Mes 9). Cierran el ciclo de prueba/limpieza: antes de esto no había forma de deshacer objetos de prueba sin entrar manualmente a Civil3D.
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.
- 12d ago First seen · 213 lines · 3,953 tokens per session scan A cfc8e0f23d3e
civil3d-mcp-civil3d-mcp CLAUDE.md is an instructions file published in the GitHub repository DaniGhosy/civil3d-mcp-civil3d-mcp (2 stars, last pushed 24d ago), licensed MIT. It adds 3,953 tokens to every session, about $0.0198 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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