Opens the draw.io editor with a diagram from XML content. Use this to view, edit, or create diagrams in draw.io format. The XML should be valid draw.io/mxGraph XML format. IMPORTANT: Do NOT use double hyphens (--) inside XML comments, as this is invalid XML and will break the parser. Use single hyphens or rephrase instead.

Opens the draw.io editor with a diagram generated from CSV data. The CSV format should follow draw.io's CSV import specification which allows creating org charts, flowcharts, and other diagrams from tabular data.

Opens the draw.io editor with a diagram generated from Mermaid.js syntax. Supports flowcharts, sequence diagrams, class diagrams, state diagrams, entity relationship diagrams, and more using Mermaid.js syntax.

Opens the draw.io editor with engineering diagram XML and automatically loads 240+ engineering stencil libraries in the sidebar. Libraries cover RF components (amplifiers, mixers, filters, switches, antennas, oscillators), electrical (power ICs, connectors, test equipment), PCB (stackup layers, vias, impedance), wireless/telecom (protocol badges, spectrum, modulation), and general engineering (system blocks, rack diagrams, cables, thermal management, passive components). Use this instead of open_drawio_xml when creating engineering block diagrams. IMPORTANT: Do NOT use double hyphens (--) inside XML comments.

Generates an RF signal chain block diagram from a JSON description and opens it in draw.io. Provide an array of blocks with type, label, and optional RF parameters. The tool auto-layouts blocks left-to-right with signal flow arrows and color-coded shapes. Injection sources (e.g. LO for a mixer) are placed below their target block with dashed arrows. Supports cumulative gain and noise figure annotations using the Friis formula.

Supported block types: Amplifiers: lna, pa, amplifier, driver Filters: bpf, lpf, hpf, notch Mixer: mixer Attenuators: attenuator, dsa Converters: adc, dac Oscillators: vco, oscillator, pll Antenna: antenna Passive: coupler, splitter, combiner, circulator, isolator, balun, duplexer, diplexer Switches: switch, spdt, sp4t Other: detector, custom

Each block object in the chain array accepts: type (required): one of the types above label: display name (defaults to standard abbreviation) sublabel: smaller text below the label (e.g. frequency) gain_db: gain in dB (defaults from component database) nf_db: noise figure in dB (defaults from component database) inject_to: label of the main chain block this injects into (for LO sources, etc.)

Generates an EMC test setup cross-section diagram from a template and opens it in draw.io. Shows equipment layout with ground plane, EUT on table, antenna on mast, and test instruments.

Available templates: cispr25_re: CISPR 25 Radiated Emissions - semi-anechoic chamber, antenna 1m from EUT, 150 kHz - 2.5 GHz cispr25_ce: CISPR 25 Conducted Emissions - LISN on each power line, 150 kHz - 108 MHz iso11452_2_ri: ISO 11452-2 Radiated Immunity - absorber-lined enclosure, 200 MHz - 18 GHz iso11452_4_ci: ISO 11452-4 Conducted Immunity (BCI) - BCI clamp on harness, 1 MHz - 400 MHz

Each template includes standard equipment, distances, and cable connections. Equipment labels can be overridden. Distance annotations are shown by default.

Generates a PCB stackup cross-section diagram and opens it in draw.io. Shows each layer as a color-coded horizontal rectangle with labels and material properties.

Available templates: 4layer: Standard 4-Layer (L1 Signal / L2 GND / L3 PWR / L4 Signal, FR-4) 6layer: Standard 6-Layer (L1 Signal / L2 GND / L3-L4 Signal / L5 PWR / L6 Signal, FR-4) custom: Provide your own layers array

Layer types and colors: copper: Signal (red), GND (blue), PWR (orange) - weight in oz prepreg: Light yellow with material properties (Dk, Df) core: Light gray with material properties (Dk, Df) soldermask: Green (outer surfaces)

Available materials: fr4, rogers_4003c, rogers_4350b, megtron6, isola_370hr Copper weights: 0.5oz (17.5um), 1oz (35um), 2oz (70um)

Opens a schematic screenshot in draw.io with engineering annotations overlaid. The original image becomes a locked background layer. Annotations (redline circles, revision clouds, delta callouts, arrows, text notes) are placed on a foreground layer. Use this to mark up existing schematics with proposed changes, issues, or review comments. Claude can analyze a screenshot with vision first, then call this tool with coordinates and descriptions for each annotation.

Reads and parses a .drawio or .xml diagram file, returning structured JSON with all shapes, edges, and their properties (labels, positions, styles, connections). Use this to analyze existing diagrams, extract component lists, or understand diagram structure before making modifications. Supports both uncompressed mxGraphModel XML and .drawio file format.

Exports a draw.io diagram XML to an SVG or PNG file. For SVG export, the diagram is converted locally without requiring a browser. For PNG export, a headless browser (puppeteer) is used if available. Returns the file path of the exported image.