Replaces the manual add_schematic_junction tool with automatic junction
management. WireManager.sync_junctions inserts/removes junction dots
based on wire endpoints plus component pin positions and is invoked
after add_wire, add_polyline_wire, delete_wire, move, and rotate.
- Pin-aware: parses lib_symbols and applies KiCad's mirror/rotate/
translate transform to compute world pin coordinates
- Multi-unit safe: filters lib_symbols sub-units by the placed
symbol's (unit N) field plus the unit-0 common body
- Removes the now-unused WireManager.add_junction static method
- Updates CHANGELOG [Unreleased] with the tool removal notice
- Adds .mcp.json to .gitignore (machine-local paths)
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Promotes BOM / sourcing fields (MPN, Manufacturer, DigiKey_PN, LCSC,
JLCPCB_PN, Voltage, Tolerance, Dielectric, ...) to first-class citizens
on placed schematic symbols.
New MCP tools:
- set_schematic_component_property: add or update one custom property
on a component (convenience wrapper around edit_schematic_component).
- remove_schematic_component_property: delete one custom property.
The four built-in fields (Reference, Value, Footprint, Datasheet) are
protected and rejected.
edit_schematic_component enhancements:
- New `properties` parameter: map of property name to either a string
value or a full spec object { value, x?, y?, angle?, hide?, fontSize? }.
Adds the property when missing, otherwise updates the existing field
(and optionally its label position / visibility). Lets a single tool
call attach an entire BOM payload to a component.
- New `removeProperties` parameter: list of custom property names to
delete in the same call.
- Property values are now backslash-escaped so descriptions containing
a double-quote or a backslash no longer corrupt the .kicad_sch file.
- New properties default to (hide yes) so they appear in BOM exports
without cluttering the schematic canvas.
get_schematic_component description clarified to highlight that it
already returns every field on the symbol, including custom ones.
New MCP prompt component_sourcing_properties guides agents through the
conventional property names recognised by downstream BOM tooling and
the recommended call sequence.
Implementation (python/kicad_interface.py):
- _PROTECTED_PROPERTY_FIELDS frozenset
- _escape_sexpr_string / _find_matching_paren static helpers
- _set_property_in_block / _set_hide_on_property /
_remove_property_from_block surgical text-level edits that preserve
formatting and the property's UUID
- _handle_edit_schematic_component rewritten to orchestrate
add/update/remove and return a per-property summary
- New handlers _handle_set_schematic_component_property and
_handle_remove_schematic_component_property registered in the
command dispatch table
Tests (tests/test_schematic_component_properties.py):
32 tests covering escape helper, paren matcher, add/update/remove
(single + batched), full spec dicts, default position, default
(hide yes), special-character escaping, UUID preservation, protected
built-in field rejection, no-op removal, both new convenience tools,
and input validation. All 590 tests in the project still pass.
Docs: README, SCHEMATIC_TOOLS_REFERENCE, TOOL_INVENTORY, CHANGELOG.
Adds two new MCP tools for working with free-form text annotations
(SCH_TEXT elements) in KiCad schematics:
- add_schematic_text: place a text note with optional angle, font size,
bold/italic, and justification
- list_schematic_texts: list all text annotations with optional
case-insensitive substring filter
Includes WireManager.add_text / list_texts using _text_insert + sexpdata,
handler dispatch in KiCADInterface, TypeScript tool definitions, registry
entry, reference doc updates, and 30 unit tests.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Allows placing a specific unit (A=1, B=2, C=3, …) of a multi-unit KiCad
symbol rather than always defaulting to unit 1. Required for quad
optocouplers, dual op-amps, and other multi-unit parts where each channel
must be placed independently.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Moves a net label (local, global, or hierarchical) to a new position in
place, avoiding the error-prone delete-then-re-add workflow. Supports an
optional currentPosition disambiguator and labelType filter.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add optional netName (exact case-sensitive match) and labelType
(net/global/power enum) parameters. Both are optional and AND
together when combined. Omitting both preserves current behaviour.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Two new tools for managing hierarchical schematic connections:
- add_schematic_hierarchical_label: create sheet interface ports on
sub-sheet schematics. These are the sub-sheet side of hierarchical
connections, linking to sheet pins on the parent.
- add_sheet_pin: add pins to sheet symbol blocks on the parent
schematic. Targets the correct sheet by matching the Sheetname
property. The pinName must match a hierarchical_label in the
sub-sheet.
Both tools use text-based S-expression insertion (not sexpdata
round-trip) to preserve KiCad's native file formatting. Labels
include proper justification based on orientation: left-justify for
rightward labels (0°), right-justify for leftward labels (180°).
Wire manager additions:
- _find_insertion_point(): locates sheet_instances block or final paren
- _text_insert(): inserts formatted S-expression text at the right position
- _make_hierarchical_label_text(): generates hierarchical_label S-expression
- _make_sheet_pin_text(): generates sheet pin S-expression
- WireManager.add_hierarchical_label(): static method for label insertion
- WireManager.add_sheet_pin(): static method for pin insertion into
named sheet blocks
12 unit tests covering insertion, orientation/justification mapping,
parameter validation, multi-sheet targeting, and error handling.
export_netlist was returning "Unknown command" because no Python handler
existed. generate_netlist was timing out (30s) due to an O(nets × components
× pins) wire-graph algorithm with a new PinLocator instantiated per net.
Both handlers now delegate to `kicad-cli sch export netlist`:
- export_netlist: new handler; writes KiCad XML / Spice / Cadstar / OrcadPCB2
to the caller-supplied outputPath. Added schematicPath parameter to the TS
tool definition (was absent, making file export impossible).
- generate_netlist: replaces the slow wire-graph with kicad-cli + XML parse;
returns the same {components, nets} JSON the TS handler already expected.
Also adds _find_kicad_cli_static() so both handlers share CLI discovery
without depending on ExportCommands (which requires a loaded pcbnew board).
Cleaned up generate_netlist schema in tool_schemas.py (removed outputPath and
format fields the handler never used), updated MCP tool descriptions and
SCHEMATIC_TOOLS_REFERENCE.md to clearly distinguish the two tools.
26 unit tests added covering parameter validation, subprocess mocking,
format mapping, XML→JSON parsing, and error/timeout propagation.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
get_pin_net was a superset of get_wire_connections with the same
coordinate-based flood-fill but two extra response fields (net, query_point)
and a reference+pin input mode. Having both tools confused LLM tool selection.
get_wire_connections now:
- Returns net (label name or null) and query_point in all response paths
- Accepts reference+pin input in addition to x/y coordinates,
resolving the pin endpoint via PinLocator internally
get_pin_net tool, handler, schema, TS registration, and tests removed.
test_wire_connectivity.py updated with coverage for all new behaviour.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Answers "what net is pin X of component Y on?" without requiring
callers to triangulate from list_schematic_nets or know a wire
coordinate first.
Accepts either {reference, pin} (resolved via PinLocator) or {x, y}
coordinate. Returns net label name (or null for unnamed nets), all
connected pins, wire segments, and the resolved query point.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Adds a new MCP tool that snaps wire endpoints, junction positions, and
net label coordinates to the nearest grid point (default 2.54 mm). Off-grid
coordinates cause wires that appear visually connected to fail ERC checks
because KiCAD uses exact IU integer matching internally; this tool eliminates
that class of error before running ERC.
- python/commands/schematic_snap.py: core snap logic with in-place sexp mutation
- python/kicad_interface.py: route + handler
- python/schemas/tool_schemas.py: JSON schema (gridSize, elements params)
- src/tools/schematic.ts: TypeScript MCP tool registration
- tests/test_snap_to_grid.py: 20 unit + integration tests (all passing)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Detects wire segments with at least one dangling endpoint — an endpoint
not connected to a component pin, net label, or another wire. These
cause ERC 'wire end unconnected' violations and are a common symptom of
incomplete routing or stray stub wires.
Algorithm uses exact KiCad IU (10 000 IU/mm) coordinate matching,
consistent with wire_connectivity.py:
1. Build an endpoint-frequency map for all wires (IU precision)
2. Collect anchored IU points: component pins (via PinLocator),
net labels / global_labels, power symbol pins
(via _parse_virtual_connections)
3. An endpoint is dangling when it is touched by exactly one wire AND
is not an anchored point; the containing wire is reported
Does not require the KiCad UI to be running.
Changes:
python/commands/schematic_analysis.py — find_orphaned_wires() function
python/kicad_interface.py — handler + route registration
python/schemas/tool_schemas.py — MCP schema entry
src/tools/schematic.ts — TypeScript server.tool() call
tests/test_schematic_analysis.py — 7 integration tests
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
add_schematic_net_label now accepts optional componentRef + pinNumber to
snap the label directly to the exact pin endpoint via PinLocator, removing
all approximation risk. The response always includes actual_position and,
when snapping was used, snapped_to_pin — so the caller gets confirmation
of exactly where the label landed.
connect_to_net return type changed from bool to Dict, returning
pin_location, label_location, and wire_stub on success so agents no
longer need a separate verification call to confirm placement.
connect_passthrough updated to check result.get("success") against the
new dict return. tool_schemas.py and schematic.ts updated to match
(position is now optional, componentRef/pinNumber/labelType/orientation
added, connect_to_net schema field names corrected).
17 new unit tests in tests/test_net_label_pin_snapping.py.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Restore the tool registration order so move_schematic_component appears
before rotate_schematic_component, matching the pre-PR location.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The PR added a second server.tool("move_schematic_component", ...) at line 1127
without removing the original registration at line 722, causing the server to
fail on startup with "Tool move_schematic_component is already registered".
Also adds tests/test_ts_tool_registry.py which scans all src/tools/**/*.ts files
for duplicate server.tool() names so this class of bug is caught automatically.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
When moving a schematic component, connected wires are stretched/shifted
to follow the component (like KiCAD's drag behaviour), preserving
connectivity instead of leaving dangling wire stubs.
Also fixes property labels (value, reference, etc.) so they shift with
the symbol rather than staying at their original positions.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add Prettier as a dev dependency with .prettierrc.json config and
.prettierignore. Hook added via mirrors-prettier in pre-commit config.
All TypeScript, JSON, Markdown, and YAML files auto-formatted.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Rename add_schematic_connection → add_schematic_wire with waypoints[] parameter
- Add snapToPins (default true) to snap wire endpoints to nearest pin
- Expose add_schematic_junction as an MCP tool
- Break existing wires at new wire endpoints for T-junction support
- Remove orphaned add_connection / add_wire / get_pin_location from ConnectionManager
- Update tool registry to reflect renamed schematic tools in TS layer
- Add 76 tests for wire/junction handler dispatch, schema validation, and WireManager corner cases
- Apply Black and Prettier formatting to changed files
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Remove the 0.5mm query tolerance in favour of exact integer-unit matching
on all coordinate lookups (seed, label bridging, pin matching), mirroring
KiCad's own connectivity algorithm. Callers must supply exact wire endpoint
coordinates (e.g. from list_schematic_wires).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Update tool description and Python docstring to make clear that the
query point must be at a wire endpoint or junction — midpoints of
wire segments are not matched.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Given a single (x,y) coordinate on the schematic, flood-fills through all
connected wire segments and returns every component pin reachable on that net,
plus the full list of wire segments with their start/end coordinates.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
KiCad's native ERC already checks for unconnected pins with better
accuracy (hierarchical sheets, bus connections, custom rules). Remove
the reimplemented version and its dead helper _parse_no_connects.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Eliminate repeated file parsing by extracting _extract_lib_symbols helper
that walks already-parsed sexp_data once instead of re-reading the file
per symbol via PinLocator. Support diagonal wire overlap detection using
cross-product parallelism and 1D projection. Fix wire region inclusion to
use AABB intersection for pass-through wires. Normalize view region
coordinates. Clarify tolerance docstrings across Python, TS, and schema.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Wires that start at a component pin but continue through the body were
incorrectly suppressed as "valid connections." Now nudges the pin endpoint
toward the other end and re-tests intersection — if the shortened segment
still hits the bbox, the wire passes through and is flagged.
Renamed the tool from check_wire_collisions to find_wires_crossing_symbols
across all layers (Python, handler, schema, TypeScript) to clarify that it
finds wires crossing over component symbols, which is unacceptable in
schematics.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add five new read-only schematic analysis MCP tools:
- get_schematic_view_region: export cropped schematic region as PNG/SVG
- find_unconnected_pins: list pins with no wire/label/power connection
- find_overlapping_elements: detect duplicate symbols, stacked labels, collinear wire overlaps
- get_elements_in_region: list all symbols/wires/labels in a bounding box
- check_wire_collisions: detect wires passing through component bodies
Includes Python handler dispatch, tool schemas, TypeScript server bindings,
the schematic_analysis command module, and a full test suite (28 tests passing).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- New `get_schematic_component` MCP tool returns component position and
all field values with their label (at x/y/angle) positions
- Extends `edit_schematic_component` with optional `fieldPositions` dict
so callers can reposition Reference/Value/etc. labels in one call
- Adds 18 tests (6 unit, 12 integration) covering parsing, round-trips,
and edge cases
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Remove unused imports in move_schematic_component
- Add warning log when mirror attribute missing on rotate
- Move `import re` out of loop in annotate_schematic
- Include global_label in list_schematic_nets
- Fix SVG export to use directory for kicad-cli --output flag
- Return actual SVG data in get_schematic_view TS handler
- Add isError: true to all failure responses in new tools
- Add connect_passthrough to schematic category in registry
- Simplify power symbol filtering control flow in list_labels
- Fix indentation in list_schematic_labels power section
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Exports schematic to SVG via kicad-cli, then converts to PNG using
cairosvg (same approach as get_board_2d_view). Falls back gracefully
to SVG if cairosvg is not installed. Supports configurable output
size and format (png/svg).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add all missing schematic operations identified in the gap analysis:
Inspection (P0/P2):
- list_schematic_components: enumerate all components with refs, values, pins
- list_schematic_nets: list all nets with their connections
- list_schematic_wires: list all wire geometry
- list_schematic_labels: list net labels, global labels, power flags
Editing (P0/P1):
- annotate_schematic: assign ref designators to unannotated components (R? → R1)
- move_schematic_component: reposition placed symbols
- rotate_schematic_component: rotate/mirror placed symbols
- delete_schematic_wire: remove wires by coordinates
- delete_schematic_net_label: remove labels by name/position
Export (P1):
- export_schematic_svg: schematic SVG export via kicad-cli
- export_schematic_pdf: enhanced with file path return & blackAndWhite support
Also registers list_schematic_components and annotate_schematic as
direct tools (always visible) since they're prerequisites for
reference-based workflows.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- add_schematic_net_label: warn in description that coords must be exact pin endpoints; recommend connect_to_net instead
- connect_to_net: stub wire direction now follows pin angle (was hardcoded +X)
- pin_locator.py: add get_pin_angle() and _get_lib_id() helpers
- new tool: get_schematic_pin_locations(schematicPath, reference) → returns exact x/y of every pin endpoint, so Claude can place labels correctly
Bug 1 - add_schematic_component: footprint parameter silently ignored
The footprint value from MCP params was never passed through to
DynamicSymbolLoader.add_component() / create_component_instance().
Every placed symbol had an empty Footprint field regardless of input.
Fix: added footprint: str='' to both functions, passed through all
call sites, added footprint to schematic.ts tool schema.
Bug 2 - delete_schematic_component: only deleted first duplicate
When a reference appeared multiple times (e.g. after a failed
add attempt), only the first instance was removed due to break
after first match. Fix: collect all matching blocks first, then
delete back-to-front to preserve indices. Response now includes
deleted_count.
New tool - edit_schematic_component
Update footprint, value or reference of a placed symbol in-place.
More efficient than delete+re-add: preserves position and UUID.
Accepts: schematicPath, reference, footprint?, value?, newReference?
All 3 fixes verified by live tests on a real JLCPCB/KiCAD 9 project:
- R_TEST1: footprint Resistor_SMD:R_0603_1608Metric written correctly
- J1 duplicate: deleted_count=2 with single call
- J2 edit: PinSocket footprint assigned in-place, no delete+add needed
- PCB update (F8) confirmed: only components with footprint imported
New tools - datasheet:
- get_datasheet_url: construct LCSC datasheet PDF URL + product page URL
without any API key (URL schema: https://www.lcsc.com/datasheet/<C#>.pdf)
- enrich_datasheets: scan .kicad_sch, write LCSC datasheet URL into every
symbol that has an LCSC property but an empty Datasheet field; supports
dry_run=true for preview; text-based implementation (no skip writes)
Implementation: python/commands/datasheet_manager.py
New tool - schematic:
- delete_schematic_component: remove a placed symbol from a .kicad_sch file
by reference designator (e.g. R1, U3)
Bug fix - delete_schematic_component (two separate root causes):
1. No MCP tool named delete_schematic_component was registered at all.
Any delete-symbol request fell through to the PCB-only delete_component
tool which searches pcbnew.BOARD and always returned 'Component not found'
for schematic symbols.
2. component_schematic.py::remove_component() still used skip for writes.
PR #40 rewrote DynamicSymbolLoader (add path) to avoid skip-induced
schematic corruption, but the delete path was not touched by that PR.
Fix: _handle_delete_schematic_component in kicad_interface.py uses direct
text manipulation with parenthesis-depth tracking (same technique as PR #40),
bypassing component_schematic.py entirely. Error message explicitly guides
users: 'use delete_component for PCB footprints'.
Files changed:
- python/commands/datasheet_manager.py (new)
- src/tools/datasheet.ts (new)
- python/kicad_interface.py: 3 new handlers + dispatch entries
- src/tools/schematic.ts: delete_schematic_component tool
- src/server.ts: registerDatasheetTools import + call
- src/tools/index.ts: export registerDatasheetTools
- CHANGELOG.md: document all above
Adds comprehensive local KiCad symbol library search functionality and fixes KICAD9_3RD_PARTY environment variable resolution.
Features:
- Symbol library search by name, LCSC ID, description, manufacturer, MPN
- Support for 3rd party libraries installed via Plugin and Content Manager
- New MCP tools: search_symbols, list_symbol_libraries, get_symbol_info
- Enhanced library path resolution for KiCad 8 and 9
This enables users with locally installed JLCPCB libraries to search and use components directly.
Co-authored-by: l3wi <l3wi@users.noreply.github.com>
Major improvements to schematic editing capabilities:
## Python Implementation (connection_schematic.py)
- Implemented pin-to-pin connection logic using kicad-skip
- Added get_pin_location() to find absolute pin positions
- Implemented add_connection() for wire connections between component pins
- Added add_net_label() for creating net labels
- Added connect_to_net() to connect pins to named nets
- Implemented get_net_connections() to query net connectivity
- Added generate_netlist() for schematic netlist extraction
## MCP Handlers (kicad_interface.py)
- Added 5 new command handlers:
- add_schematic_connection - Pin-to-pin wiring
- add_schematic_net_label - Net label placement
- connect_to_net - Connect pin to named net
- get_net_connections - Query net connectivity
- generate_netlist - Export netlist data
## TypeScript Tools (schematic.ts)
- Added 5 new MCP tools with proper schemas and validation
- Enhanced user feedback with descriptive messages
- Total schematic tools increased from 3 to 8
## Features
- Pin location calculation with symbol rotation support
- Automatic wire stub creation for net labels
- Comprehensive netlist generation with component and net info
- Full logging for debugging connection issues
This resolves the schematic editing limitations and enables users to:
- Wire component pins together directly
- Use net labels for cleaner schematics
- Query schematic connectivity
- Generate netlists for manufacturing
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
- Added comprehensive documentation (BUILD_AND_TEST, CLIENT_CONFIG, KNOWN_ISSUES, ROADMAP, etc.)
- Updated core functionality for board outline, size, and utilities
- Added new tools for project, routing, schematic, and UI management
- Included TypeScript SDK with full MCP implementation
- Updated configuration examples for all platforms
- Added changelog and status tracking
- Improved Python utilities with KiCAD process management
- Enhanced resource helpers and server capabilities
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
