Show current ProcessOn authentication status.

Reads PROCESSON_API_KEY (or cached OAuth token). Does not make a network call.

Generate an editable online diagram from a natural-language description.

Turn an idea, process, or structure into a professional ProcessOn diagram. Supports flowcharts / swimlane diagrams, sequence diagrams, software & cloud architecture diagrams, ER diagrams, org charts, timelines, infographics and more. Returns a preview image and an editable link.

Use this whenever the user wants to "画个图 / 流程图 / 架构图 / 思维导图 / visualization / create a diagram". If the chart type is ambiguous, ask first.

Args: prompt: A clear description of the diagram. Include the goal, the key nodes/steps/entities, decision points, and any required labels. Write in the user's language; professional layout will be applied. chart_type: Optional hint, e.g. "flowchart", "sequence", "architecture", "er", "org", "timeline", "infographic". Helps the model pick the right style. Leave empty to let the model decide.

Turn an idea into a Mermaid diagram definition (DSL) — the planning / first-draft step of LLM-led diagramming.

Use this FIRST when you want to design a diagram from scratch: it returns editable Mermaid source code (not a rendered image). You — the LLM — then read it, refine it, add/remove nodes and edges, and finally hand the edited Mermaid to processon_render_mermaid to get a real editable ProcessOn chart.

Supported diagrams map to Mermaid types: flowchart/architecture/network deployment (graph TD/LR), mind map (mindmap), sequence (sequenceDiagram), ER model (erDiagram), class diagram (classDiagram), timeline, C4, etc.

This is the recommended workflow for "from 0 to 1 to 100":

1. design_diagram -> get a Mermaid skeleton

2. edit the Mermaid yourself (iterate nodes/edges/labels)

3. render_mermaid -> get preview image + editable link

4. repeat 2-3 until the diagram is right.

Args: prompt: What the diagram should describe (goal, entities, steps, decisions, relationships). Write in the user's language. diagram_type: Hint for the target shape, e.g. "flowchart", "mindmap", "sequence", "er", "architecture", "network-deployment", "timeline". Leave empty to infer.

Render a Mermaid definition YOU wrote into an editable ProcessOn diagram.

This is the "edit → render" step of LLM-led diagramming. Give it the full Mermaid source code (your own, or refined from processon_design_diagram). ProcessOn renders it verbatim into a professional, editable online diagram and returns a preview image + an editable link.

The LLM fully owns the diagram content here — iterate the Mermaid text and call this again to get the next version. Supports the same shapes as Mermaid: flowcharts, architecture / network deployment, mindmaps, sequence, ER, class, timeline, C4, etc.

Args: mermaid_code: The complete Mermaid source (e.g. starts with graph TD, mindmap, sequenceDiagram, erDiagram). title: Optional diagram title. diagram_type: Optional shape hint, e.g. "flowchart", "mindmap", "sequence", "er", "architecture", "network-deployment".

Convert Markdown text into an editable ProcessOn mindmap.

Parses headings and bullet lists in the Markdown and renders them as an editable online mindmap. Great for turning meeting notes, an outline, or a document summary into a visual mindmap.

Args: markdown: The Markdown content (headings + bullet lists). title: Mindmap title. Auto-generated as "po-mcp-" when empty. structure: Layout style. One of: mind_free (自由), mind_right (向右), mind_org (组织), mind_ishikawa_left (鱼骨), mind_timeline_h (时间轴), mind_tree_free (树), mind_treeTable_left_title (树表).

Show cache backend info and whether a token is stored.

Clear cached data. Optionally clear only keys with a given prefix.

Args: prefix: Key prefix to clear (empty = clear everything).