17 tests: round_sig/compact_list rounding, downsample_indices stride vs
peak-preserving (a narrow spike must survive), and extract_waveform/
analyze_signal across AC/transient/x-range/error/all-analysis paths.
11 tests over auto plot-type detection (bode/spectrum/time), missing-signal
and multi-signal-overlay errors, dimension/height defaults, downsampling, and
x-range clipping -- all with hand-built RawFiles, no .raw read or SVG write.
15 tests over build_effective_params, extract_metrics (AC + transient via
hand-built RawFiles), evaluate_targets (all comparison operators +
unmeasurable), and make_suggestions. This logic previously required a full
LTspice run to exercise.
Covers the netlist-first precedence contract (names in both registries),
asc-only/netlist-only resolution, unknown -> None, and the deduped union
in all_template_names -- the lookup logic tune_circuit depends on.
Locks in the exact-match semantics that distinguish resolve_index from
get_variable, so the lookup used by tune_circuit and plot_waveform is now
covered without needing the live LTspice path.
Bridge mcltspice to SpiceBook (spicebook.warehack.ing) with 5 new MCP
tools (publish, list, get, delete, simulate), a status resource, and a
guided publish prompt. Includes LTspice-to-ngspice netlist conversion
(strips .backanno, Rser=, Windows paths) with structured warnings.
Path traversal protection on file reads (extension allowlist + resolve),
notebook ID validation, narrowed exception handling, and size limits.
35 unit tests + 4 live integration tests.
Row-major data from raw_parser was indexed as column-major, producing
garbled plots for digital waveforms. Also adds signals parameter for
overlaying multiple time-domain traces with legend, and adaptive X-axis
labels (ns/µs/ms/s) based on time span.
Expose x_min/x_max/y_min/y_max, max_points, width/height, and title
override through the MCP tool. Data is clipped to X range before
stride-based downsampling for better zoomed resolution. All params
default to None/current behavior for backward compatibility.
Rename package from mcp-ltspice/mcp_ltspice to mcltspice throughout:
source directory, imports, pyproject.toml, tests, and README.
Remove startup banner prints from main() since FastMCP handles
its own banner and stdout is the MCP JSON-RPC transport.
Point repo URL at git.supported.systems/MCP/mcltspice.
CE amplifier schematic: the input coupling cap CC_in was placed
horizontally (R90) at y=336 — the same y as the RB1-to-base bias
wire. Both cap pins sat on the wire, shorting the cap and allowing
Vin's 0V DC to override the bias divider, putting Q1 in cutoff.
Fix: move CC_in to vertical orientation (R0) above the base wire.
Now pinA=(400,256) and pinB=(400,320) are off the y=336 bias path.
The cap properly blocks DC while passing the 1kHz input signal.
Result: V(out) swings 2.2Vpp (gain ≈ 110) instead of stuck at Vcc.
Colpitts oscillator test: the schematic was actually working (V(out)
pp=2.05V) but the test's fallback variable selection picked V(n001)
(the Vcc rail, constant 12V) instead of V(out). Fix: look for V(out)
first since the schematic labels the collector with "out".
Integration tests: 4/4 pass, unit tests: 360/360 pass.
