autocad-mcp-pro/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Next: closed-loop refiner (critique→repair→re-critique with transaction-stack isolation), pre-plan clarification pass, ISO 286 fit-table lookup (H7/g6 → deviations), and a local-VLM visual judge.

Fixed

• Install from source — pip install -e ".[full]" failed at "Preparing editable metadata" because the flat layout has no directory matching the project name, so hatchling could not infer which files to ship. pyproject.toml now declares the wheel file selection explicitly (server.py, config.py, security.py, backends/, engineering/). (#2)
• dimension_linear on the COM backend — always crashed with <unknown>.AddDimLinear: the AutoCAD ActiveX API has no AddDimLinear method. Linear dimensions are now created via AddDimRotated (identical argument order), with a mocked regression test. (#3)

[1.2.0] — 2026-07-07

Production-ISO parity + a measurable quality moat. 360 tests, ruff-clean. Tool count: 111 → 116.

Added

• drawing_settings — read or change common AutoCAD drawing settings by friendly name (units mm/cm/m/inch/feet, linear/angular precision, LTSCALE, DIMSCALE, text size, point mode/size, OSMODE, fillet radius) without memorising system-variable names. Call with no argument for a full snapshot. A convenience facade over system_get_variable / system_set_variable; cross-backend.
• In-place editing — entity_edit_text re-labels or resizes an existing TEXT/MTEXT entity, and entity_edit_geometry re-drives a CIRCLE/LINE/ARC (center, radius, endpoints, arc angles) — both preserve the entity handle, so the user can adjust a drawing without delete-and-recreate. Cross-backend.
• 2D GD&T (ISO 1101 / ASME Y14.5) — gd_frame draws a feature control frame (all 14 geometric characteristics, ⌀ zone prefix, Ⓜ/Ⓛ/Ⓢ material modifiers, multi-datum references) and datum_feature places a datum symbol. Frames are composed from LINE + TEXT so they render identically on both the COM and ezdxf backends (ezdxf's native TOLERANCE entity renders blank via matplotlib). No competing CAD MCP or surveyed text-to-CAD product ships 2D GD&T authoring.
• GD&T datum-consistency gate — a new gdt critique focus fails drawing_finalize when a feature control frame references a datum with no matching datum feature (a meaningless FCF per ISO 1101).
• ISO 129 dimension tolerances — dimension_linear / dimension_radius / dimension_diameter gain tol_upper / tol_lower / tol_mode (symmetric ±, deviation +a/-b, limit stacked, basic boxed) and a text_override (e.g. ⌀20 H7). Toleranced production dimensions are now possible — previously the single biggest functional gap.
• Scalar drawing-score + invalidity ratio (engineering/scoring.py) — the drawing_finalize payload now carries a 0-100 score, an invalidity_ratio, and an A-F grade over the union of the structural validator and the premium critique, so drawing quality is regression-trackable (MUSE / CadBench grade an Invalidity Ratio, not shape).

Fixed

• Honesty: the COM backend advertised a false all_entity_types capability (it authors 2D entities only, no 3D solids) — corrected to entities_2d.

[1.1.1] — 2026-06-20

Added

• selection_get (Entity Query, COM backend): reads AutoCAD's implied ("pickfirst") viewport selection — the entities the user highlighted with grips before invoking the AI — and returns their handles + EntityInfo. This lets the AI scope work to exactly what the user picked (dimension_auto(selection_get()["handles"])) instead of acting on the whole drawing. Resolves #1 — the layer-juggling workaround is no longer needed. Surfaces the PICKFIRST sysvar state so an empty selection is self-explanatory. The ezdxf headless backend has no viewport, so it returns ok=False with an empty handle list (same shape, never raises). Tool count: 110 → 111.

[1.1.0] — 2026-06-19

Correctness, cross-backend parity, and an enforced quality gate, landed across four audited sprints (see docs/analysis/). 318 tests, ruff-clean.

Added

• Premium drafting workflow (shared across both backends): drawing_plan, drawing_critique (ISO-128 focuses), point_from_snap, drawing_apply_iso_layers, dimension_auto, entity_select_smart, construction_xline / construction_clear.
• Deterministic geometry for exact OSNAP coordinates: point_intersection (line/line, line/circle, circle/circle) and point_tangent (external point → circle).
• Engineering / deterministic CAD layer: involute gear front view + section A-A, DIN 6885 keyed bore, ISO A3 title block, and the 8-step drawing_finalize validator.
• HTTP bearer-token auth: StaticTokenVerifier wired into FastMCP when MCP_AUTH_TOKEN is set.
• Mocked-COM test harness (tests/test_com_backend.py + Sprint-3/4 suites) — COM logic is now regression-tested on Linux CI without a live AutoCAD.
• entity_create_mtext rotation parameter; dimension_auto layer override; bounding_box / ARC length / TEXT-MTEXT rotation+char_height on both backends; BlockInfo.description.
• Security module (security.py), centralized config (config.py), .env.example, path validation, command/LISP sanitization, ruff config, pre-commit hooks, pytest-cov.

Changed

• drawing_finalize now enforces the premium critique in addition to the structural validator: leftover construction geometry, non-ISO-128 lineweights, untrimmed corners, duplicate entities, and dimension overlap block the gate (was advisory-only). strict_critique=True fails on warnings too.
• drawing_save_as derives the on-disk format from the file extension — part.dxf writes DXF, not DWG. ezdxf refuses to mislabel a .dwg file.
• Dimension and construction layers resolve from the active layer set (iso13567 → M-DIMEN-T-N / M-CONST-E-N, not the hardcoded DIM / CONSTRUCTION).
• Premium meta-tools lifted into the shared AutoCADBackend base class (single source of truth).
• Dead code removed (section.py, generate_tooth_profile, CommandResult, set_layer_active, …).

Fixed

• ezdxf dimension_aligned / dimension_angular raised TypeError (wrong ezdxf 1.4 args) — fixed.
• Full-circle polar array placed a duplicate copy over the original — fixed (divisor = count).
• entity_offset ignored side_x/side_y on both backends — now honored (and COM no longer leaks extras).
• COM entity_create_hatch built an associative hatch then deleted its boundary — now non-associative.
• Lineweight mm-vs-hundredths truncation wiped ISO-128 weights — fixed via normalize_lineweight.
• view_screenshot / drawing_export_pdf could SIGSEGV (matplotlib GUI backend in a worker thread) — now render headless via Agg (Figure + FigureCanvasAgg).
• entity_select_smart length_range silently rejected all ARCs (no length) — fixed.
• Gear tooth profile self-overlapped for high tooth counts (z ≥ ~42); section view drew duplicate bore lines; validator keyway heuristic was a permanent false-negative — all fixed.
• COM system_run_lisp always reported "nil"; system_set_variable didn't coerce numeric sysvars — fixed. system_about tool groups / _registered_tool_count no longer drift or surface -1.
• drawing_new bootstrap failures now surface as degraded instead of reporting success.

Security

• HTTP remote-bind guard now fires on every launch path (including fastmcp run server.py:mcp), not only the __main__ block — closing an anonymous-remote-bind gap.
• AutoLISP allowlist bypass-vector regression tests (newline injection, symbol aliasing, vla*/acet-*, c: custom commands).
• COM apartment leak bounded (CoUninitialize on teardown); transaction commit/rollback and system_run_lisp now respect the CMDACTIVE guard.

[1.0.0] — 2026-03-01

Added

• Initial release with 67 tools, 6 resources, 5 prompt templates
• Dual-engine architecture: COM backend (live AutoCAD) + ezdxf backend (headless)
• FastMCP 3.0 server with middleware stack (error handling, audit, timing, logging)
• Drawing management: new, open, save, save-as, export DXF/PDF, purge, audit, undo/redo
• Entity creation: line, circle, arc, polyline, rectangle, text, mtext, hatch, spline, ellipse, point, block reference
• Dimensions: linear, aligned, angular, radius, diameter
• Entity modification: move, copy, rotate, scale, mirror, offset, delete, rectangular/polar array
• Layer management: create, delete, set current, modify, freeze/thaw, lock/unlock, hide/show, isolate
• Block operations: list, insert, explode, attributes, create from entities, find references
• Analysis: entity stats, region search, distance/area measurement, bounding box, select by layer/type
• View control: zoom extents/window, screenshot
• Transaction support: begin, commit, rollback
• System tools: status, variables, command execution, AutoLISP evaluation
• 5 prompt templates: floor plan, P&ID, electrical schematic, mechanical drawing, quick drawing