Fireworks Tech Graph
Generate production-quality SVG technical diagrams exported as PNG via rsvg-convert.
Install Source
Install this skill from GitHub:
npx skills add yizhiyanhua-ai/fireworks-tech-graph
Public package page:
https://www.npmjs.com/package/@yizhiyanhua-ai/fireworks-tech-graph
Do not pass @yizhiyanhua-ai/fireworks-tech-graph directly to skills add, because the CLI expects a GitHub or local repository source.
Update command:
npx skills add yizhiyanhua-ai/fireworks-tech-graph --force -g -y
Helper Scripts (Recommended)
Four helper scripts in scripts/ directory provide stable SVG generation and validation:
1. generate-diagram.sh - Validate SVG + export PNG
./scripts/generate-diagram.sh -t architecture -s 1 -o ./output/arch.svg
- Validates an existing SVG file
- Exports PNG after validation
- Example:
./scripts/generate-diagram.sh -t architecture -s 1 -o ./output/arch.svg
2. generate-from-template.py - Create starter SVG from template
python3 ./scripts/generate-from-template.py architecture ./output/arch.svg '{"title":"My Diagram","nodes":[],"arrows":[]}'
- Loads a built-in SVG template
- Renders nodes, arrows, and legend entries from JSON input
- Escapes text content to keep output XML-valid
3. validate-svg.sh - Validate SVG syntax
./scripts/validate-svg.sh <svg-file>
- Checks XML syntax
- Verifies tag balance
- Validates marker references
- Checks attribute completeness
- Validates path data
4. test-all-styles.sh - Batch test all styles
./scripts/test-all-styles.sh
- Tests multiple diagram sizes
- Validates all generated SVGs
- Generates test report
When to use scripts:
- Use scripts when generating complex SVGs to avoid syntax errors
- Scripts provide automatic validation and error reporting
- Recommended for production diagrams
When to generate SVG directly:
- Simple diagrams with few elements
- Quick prototypes
- When you need full control over SVG structure
Workflow (Always Follow This Order)
- Classify the diagram type (see Diagram Types below)
- Extract structure — identify layers, nodes, edges, flows, and semantic groups from user description
- Plan layout — apply the layout rules for the diagram type
- Load style reference — always load
references/style-1-flat-icon.md unless user specifies another; load the matching references/style-N.md for exact color tokens and SVG patterns
- Map nodes to shapes — use Shape Vocabulary below
- Check icon needs — load
references/icons.md for known products
- Write SVG with adaptive strategy (see SVG Generation Strategy below)
- Validate: Run
rsvg-convert file.svg -o /dev/null 2>&1 to check syntax
- Export PNG:
rsvg-convert -w 1920 file.svg -o file.png
- Report the generated file paths
Diagram Types & Layout Rules
Architecture Diagram
Nodes = services/components. Group into horizontal layers (top→bottom or left→right).
- Typical layers: Client → Gateway/LB → Services → Data/Storage
- Use
<rect> dashed containers to group related services in the same layer
- Arrow direction follows data/request flow
- ViewBox:
0 0 960 600 standard, 0 0 960 800 for tall stacks
Data Flow Diagram
Emphasizes what data moves where. Focus on data transformation.
- Label every arrow with the data type (e.g., "embeddings", "query", "context")
- Use wider arrows (
stroke-width: 2.5) for primary data paths
- Dashed arrows for control/trigger flows
- Color arrows by data category (not just Agent/RAG — use semantics)
Flowchart / Process Flow
Sequential decision/process steps.
- Top-to-bottom preferred; left-to-right for wide flows
- Diamond shapes for decisions, rounded rects for processes, parallelograms for I/O
- Keep node labels short (≤3 words); put detail in sub-labels
- Align nodes on a grid: x positions snap to 120px intervals, y to 80px
Agent Architecture Diagram
Shows how an AI agent reasons, uses tools, and manages memory.
Key conceptual layers to always consider:
- Input layer: User, query, trigger
- Agent core: LLM, reasoning loop, planner
- Memory layer: Short-term (context window), Long-term (vector/graph DB), Episodic
- Tool layer: Tool calls, APIs, search, code execution
- Output layer: Response, action, side-effects
Use cyclic arrows (loop arcs) to show iterative reasoning. Separate memory types visually.
Memory Architecture Diagram (Mem0, MemGPT-style)
Specialized agent diagram focused on memory operations.
- Show memory write path and read path separately (different arrow colors)
- Memory tiers: Working Memory → Short-term → Long-term → External Store
- Label memory operations:
store(), retrieve(), forget(), consolidate()
- Use stacked rects or layered cylinders for storage tiers
Sequence Diagram
Time-ordered message exchanges between participants.
- Participants as vertical lifelines (top labels + vertical dashed lines)
- Messages as horizontal arrows between lifelines, top-to-bottom time order
- Activation boxes (thin filled rects on lifeline) show active processing
- Group with
<rect> loop/alt frames with label in top-left corner
- ViewBox height = 80 + (num_messages × 50)
Comparison / Feature Matrix
Side-by-side comparison of approaches, systems, or components.
- Column headers = systems, row headers = attributes
- Row height: 40px; column width: min 120px; header row height: 50px
- Checked cell: tinted background (e.g.
#dcfce7) + ✓ checkmark; unsupported: #f9fafb fill
- Alternating row fills (
#f9fafb / #ffffff) for readability
- Max readable columns: 5; beyond that, split into two diagrams
Timeline / Gantt
Horizontal time axis showing durations, phases, and milestones.
- X-axis = time (weeks/months/quarters); Y-axis = items/tasks/phases
- Bars: rounded rects, colored by category, labeled inside or beside
- Milestone markers: diamond or filled circle at specific x position with label above
- ViewBox:
0 0 960 400 typical; wider for many time periods: 0 0 1200 400
Mind Map / Concept Map
Radial layout from central concept.
- Central node at
cx=480, cy=280
- First-level branches: evenly distributed around center (360/N degrees)
- Second-level branches: branch off first-level at 30-45° offset
- Use curved
<path> with cubic bezier for branches, not straight lines
Class Diagram (UML)
Static structure showing classes, attributes, methods, and relationships.
- Class box: 3-compartment rect (name / attributes / methods), min width 160px
- Top compartment: class name, bold, centered (abstract = italic)
- Middle: attributes with visibility (
+ public, - private, # protected)
- Bottom: method signatures, same visibility notation
- Relationships:
- Inheritance (extends): solid line + hollow triangle arrowhead, child → parent
- Implementation (interface): dashed line + hollow triangle, class → interface
- Association: solid line + open arrowhead, label with multiplicity (1, 0.., 1..)
- Aggregation: solid line + hollow diamond on container side
- Composition: solid line + filled diamond on container side
- Dependency: dashed line + open arrowhead
- Interface:
<<interface>> stereotype above name, or circle/lollipop notation
- Enum: compartment rect with
<<enumeration>> stereotype, values in bottom
- Layout: parent classes top, children below; interfaces to the left/right of implementors
- ViewBox:
0 0 960 600 standard; 0 0 960 800 for deep hierarchies
Use Case Diagram (UML)
System functionality from user perspective.
- Actor: stick figure (circle head + body line) placed outside system boundary
- Label below figure, 13-14px
- Primary actors on left, secondary/supporting on right
- Use case: ellipse with label centered inside, min 140×60px
- Keep names verb phrases: "Create Order", "Process Payment"
- System boundary: large rect with dashed border + system name in top-left
- Relationships:
- Include: dashed arrow
<<include>> from base to included use case
- Extend: dashed arrow
<<extend>> from extension to base use case
- Generalization: solid line + hollow triangle (specialized → general)
- Layout: system boundary centered, actors outside, use cases inside
- ViewBox:
0 0 960 600 standard
State Machine Diagram (UML)
Lifecycle states and transitions of an entity.
- State: rounded rect with state name, min 120×50px
- Internal activities: small text
entry/ action, exit/ action, do/ activity
- Initial state: filled black circle (r=8), one outgoing arrow
- Final state: filled circle (r=8) inside hollow circle (r=12)
- Choice: small hollow diamond, guard labels on outgoing arrows
[condition]
- Transition: arrow with optional label
event [guard] / action
- Guard conditions in square brackets
- Actions after
/
- Composite/nested state: larger rect containing sub-states, with name tab
- Fork/join: thick horizontal or vertical black bar (synchronization)
- Layout: initial state top-left, final state bottom-right, flow top-to-bottom
- ViewBox:
0 0 960 600 standard
ER Diagram (Entity-Relationship)
Database schema and data relationships.
- Entity: rect with entity name in header (bold), attributes below
- Primary key attribute: underlined
- Foreign key: italic or marked with (FK)
- Min width: 160px; attribute font-size: 12px
- Relationship: diamond shape on connecting line
- Label inside diamond: "has", "belongs to", "enrolls in"
- Cardinality labels near entity:
1, N, 0..1, 0..*, 1..*
- Weak entity: double-bordered rect with double diamond relationship
- Associative entity: diamond + rect hybrid (rect with diamond inside)
- Line style: solid for identifying relationships, dashed for non-identifying
- Layout: entities in 2-3 rows, relationships between related entities
- ViewBox:
0 0 960 600 standard; wider 0 0 1200 600 for many entities
Network Topology
Physical or logical network infrastructure.
- Devices: icon-like rects or rounded rects
- Router: circle with cross arrows
- Switch: rect with arrow grid
- Server: stacked rect (rack icon)
- Firewall: brick-pattern rect or shield shape
- Load Balancer: horizontal split rect with arrows
- Cloud: cloud path (overlapping arcs)
- Connections: lines between device centers
- Ethernet/wired: solid line, label bandwidth
- Wireless: dashed line with WiFi symbol
- VPN: dashed line with lock icon
- Subnets/Zones: dashed rect containers with zone label (DMZ, Internal, External)
- Labels: device hostname + IP below, 12-13px
- Layout: tiered top-to-bottom (Internet → Edge → Core → Access → Endpoints)
- ViewBox:
0 0 960 600 standard
UML Coverage Map
Full mapping of UML 14 diagram types to supported diagram types:
| UML Diagram |
Supported As |
Notes |
| Class |
Class Diagram |
Full UML notation |
| Component |
Architecture Diagram |
Use colored fills per component type |
| Deployment |
Architecture Diagram |
Add node/instance labels |
| Package |
Architecture Diagram |
Use dashed grouping containers |
| Composite Structure |
Architecture Diagram |
Nested rects within components |
| Object |
Class Diagram |
Instance boxes with underlined name |
| Use Case |
Use Case Diagram |
Full actor/ellipse/relationship |
| Activity |
Flowchart / Process Flow |
Add fork/join bars |
| State Machine |
State Machine Diagram |
Full UML notation |
| Sequence |
Sequence Diagram |
Add alt/opt/loop frames |
| Communication |
— |
Approximate with Sequence (swap axes) |
| Timing |
Timeline |
Adapt time axis |
| Interaction Overview |
Flowchart |
Combine activity + sequence fragments |
| ER Diagram |
ER Diagram |
Chen/Crow's foot notation |
Shape Vocabulary
Map semantic concepts to consistent shapes across all diagram types:
| Concept |
Shape |
Notes |
| User / Human |
Circle + body path |
Stick figure or avatar |
| LLM / Model |
Rounded rect with brain/spark icon or gradient fill |
Use accent color |
| Agent / Orchestrator |
Hexagon or rounded rect with double border |
Signals "active controller" |
| Memory (short-term) |
Rounded rect, dashed border |
Ephemeral = dashed |
| Memory (long-term) |
Cylinder (database shape) |
Persistent = solid cylinder |
| Vector Store |
Cylinder with grid lines inside |
Add 3 horizontal lines |
| Graph DB |
Circle cluster (3 overlapping circles) |
|
| Tool / Function |
Gear-like rect or rect with wrench icon |
|
| API / Gateway |
Hexagon (single border) |
|
| Queue / Stream |
Horizontal tube (pipe shape) |
|
| File / Document |
Folded-corner rect |
|
| Browser / UI |
Rect with 3-dot titlebar |
|
| Decision |
Diamond |
Flowcharts only |
| Process / Step |
Rounded rect |
Standard box |
| External Service |
Rect with cloud icon or dashed border |
|
| Data / Artifact |
Parallelogram |
I/O in flowcharts |
Arrow Semantics
Always assign arrow meaning, not just color:
| Flow Type |
Color |
Stroke |
Dash |
Meaning |
| Primary data flow |
blue #2563eb |
2px solid |
none |
Main request/response path |
| Control / trigger |
orange #ea580c |
1.5px solid |
none |
One system triggering another |
| Memory read |
green #059669 |
1.5px solid |
none |
Retrieval from store |
| Memory write |
green #059669 |
1.5px |
5,3 |
Write/store operation |
| Async / event |
gray #6b7280 |
1.5px |
4,2 |
Non-blocking, event-driven |
| Embedding / transform |
purple #7c3aed |
1px solid |
none |
Data transformation |
| Feedback / loop |
purple #7c3aed |
1.5px curved |
none |
Iterative reasoning loop |
Always include a legend when 2+ arrow types are used.
Layout Rules & Validation
Spacing:
- Same-layer nodes: 80px horizontal, 120px vertical between layers
- Canvas margins: 40px minimum, 60px between node edges
- Snap to 8px grid: horizontal 120px intervals, vertical 120px intervals
Arrow Labels (CRITICAL):
- MUST have background rect:
<rect fill="canvas_bg" opacity="0.95"/> with 4px horizontal, 2px vertical padding
- Place mid-arrow, ≤3 words, stagger by 15-20px when multiple arrows converge
- Maintain 10px safety distance from nodes
Arrow Routing:
- Prefer orthogonal (L-shaped) paths to minimize crossings
- Anchor arrows on component edges, not geometric centers
- Route around dense node clusters, use different y-offsets for parallel arrows
- Jump-over arcs (5px radius) for unavoidable crossings
Line Overlap Prevention (CRITICAL - most common bug on Codex):
When two arrows must cross each other, ALWAYS use jump-over arcs to prevent visual overlap:
- Crossing horizontal arrows: add a small semicircle arc (radius 5px, stroke same color as arrow, fill none) that "jumps over" the other line
- SVG pattern for jump-over: use a white/matching-background arc on the lower layer, then draw the upper arc on top
- Multiple crossings: stagger arc radii (5px, 7px, 9px) so arcs don't overlap each other
- Never let two arrows' straight-line segments cross without a jump-over arc
Validation Checklist (run before finalizing):
- Arrow-Component Collision: Arrows MUST NOT pass through component interiors (route around with orthogonal paths)
- Text Overflow: All text MUST fit with 8px padding (estimate:
text.length × 7px ≤ shape_width - 16px)
- Arrow-Text Alignment: Arrow endpoints MUST connect to shape edges (not floating); all arrow labels MUST have background rects
- Container Discipline: Prefer arrows entering and leaving section containers through open gaps between components, not through inner component bodies
SVG Technical Rules
- ViewBox:
0 0 960 600 default; 0 0 960 800 tall; 0 0 1200 600 wide
- Fonts: embed via
<style>font-family: ...</style> — no external @import (breaks rsvg-convert)
<defs>: arrow markers, gradients, filters, clip paths
- Text: minimum 12px, prefer 13-14px labels, 11px sub-labels, 16-18px titles
- All arrows:
<marker> with markerEnd, sized markerWidth="10" markerHeight="7"
- Drop shadows:
<feDropShadow> in <filter>, apply sparingly (key nodes only)
- Curved paths: use
M x1,y1 C cx1,cy1 cx2,cy2 x2,y2 cubic bezier for loops/feedback arrows
- Clip content: use
<clipPath> if text might overflow a node box
SVG Generation & Error Prevention
MANDATORY: Python List Method (ALWAYS use this):
python3 << 'EOF'
lines = []
lines.append('<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 960 700">')
lines.append(' <defs>')
# ... each line separately
lines.append('</svg>')
with open('/path/to/output.svg', 'w') as f:
f.write('\n'.join(lines))
print("SVG generated successfully")
EOF
Why mandatory: Prevents character truncation, typos, and syntax errors. Each line is independent and easy to verify.
Pre-Tool-Call Checklist (CRITICAL - use EVERY time):
- ✅ Can I write out the COMPLETE command/content right now?
- ✅ Do I have ALL required parameters ready?
- ✅ Have I checked for syntax errors in my prepared content?
If ANY answer is NO: STOP. Do NOT call the tool. Prepare the content first.
Error Recovery Protocol:
- First error: Analyze root cause, apply targeted fix
- Second error: Switch method entirely (Python list → chunked generation)
- Third error: STOP and report to user - do NOT loop endlessly
- Never: Retry the same failing command or call tools with empty parameters
Validation (run after generation):
rsvg-convert file.svg -o /tmp/test.png 2>&1 && echo "✓ Valid" && rm /tmp/test.png
If using generate-from-template.py:
- Prefer
source / target node ids in arrow JSON so the generator can snap to node edges
- Keep
x1,y1,x2,y2 as hints or fallback coordinates, not the main routing primitive
- Let the generator choose orthogonal routes; avoid hardcoding center-to-center straight lines unless the path is guaranteed clear
Common Syntax Errors to Avoid:
- ❌
yt-anchor → ✅ y="60" text-anchor="middle"
- ❌
x="390 (missing y) → ✅ x="390" y="250"
- ❌
fill=#fff → ✅ fill="#ffffff"
- ❌
marker-end= → ✅ marker-end="url(#arrow)"
- ❌
L 29450 → ✅ L 290,220
- ❌ Missing
</svg> at end
Output
- Default:
./[derived-name].svg and ./[derived-name].png in current directory
- Custom: user specifies path with
--output /path/ or 输出到 /path/
- PNG export:
rsvg-convert -w 1920 file.svg -o file.png (1920px = 2x retina)
Styles
| # |
Name |
Background |
Best For |
| 1 |
Flat Icon (default) |
White |
Blogs, docs, presentations |
| 2 |
Dark Terminal |
#0f0f1a |
GitHub, dev articles |
| 3 |
Blueprint |
#0a1628 |
Architecture docs |
| 4 |
Notion Clean |
White, minimal |
Notionnce |
| 5 |
Glassmorphism |
Dark gradient |
Product sites, keynotes |
| 6 |
Claude Official |
Warm cream #f8f6f3 |
Anthropic-style diagrams |
| 7 |
OpenAI Official |
Pure white #ffffff |
OpenAI-style diagrams |
Load references/style-N.md for exact color tokens and SVG patterns.
Style Selection
Default: Style 1 (Flat Icon) for most diagrams. Load references/style-diagram-matrix.md for detailed style-to-diagram-type recommendations.
These patterns appear frequently — internalize them:
RAG Pipeline: Query → Embed → VectorSearch → Retrieve → Augment → LLM → Response
Agentic RAG: adds Agent loop with Tool use between Query and LLM
Agentic Search: Query → Planner → [Search Tool / Calculator / Code] → Synthesizer → Response
Mem0 / Memory Layer: Input → Memory Manager → [Write: VectorDB + GraphDB] / [Read: Retrieve+Rank] → Context
Agent Memory Types: Sensory (raw input) → Working (context window) → Episodic (past interactions) → Semantic (facts) → Procedural (skills)
Multi-Agent: Orchestrator → [SubAgent A / SubAgent B / SubAgent C] → Aggregator → Output
Tool Call Flow: LLM → Tool Selector → Tool Execution → Result Parser → LLM (loop)
1---2name: fireworks-tech-graph3description: Use when the user wants to create any technical diagram - architecture, data flow, flowchart, sequence, agent/memory, or concept map - and export as SVG+PNG. Trigger on: "画图" "帮我画" "生成图" "做个图" "架构图" "流程图" "可视化一下" "出图" "generate diagram" "draw diagram" "visualize" or any system/flow description the user wants illustrated.4---56# Fireworks Tech Graph78Generate production-quality SVG technical diagrams exported as PNG via `rsvg-convert`.910## Install Source1112Install this skill from GitHub:1314```bash15npx skills add yizhiyanhua-ai/fireworks-tech-graph16```1718Public package page:1920```text21https://www.npmjs.com/package/@yizhiyanhua-ai/fireworks-tech-graph22```2324Do not pass `@yizhiyanhua-ai/fireworks-tech-graph` directly to `skills add`, because the CLI expects a GitHub or local repository source.2526Update command:2728```bash29npx skills add yizhiyanhua-ai/fireworks-tech-graph --force -g -y30```3132## Helper Scripts (Recommended)3334Four helper scripts in `scripts/` directory provide stable SVG generation and validation:3536### 1. `generate-diagram.sh` - Validate SVG + export PNG37```bash38./scripts/generate-diagram.sh -t architecture -s 1 -o ./output/arch.svg39```40- Validates an existing SVG file41- Exports PNG after validation42- Example: `./scripts/generate-diagram.sh -t architecture -s 1 -o ./output/arch.svg`4344### 2. `generate-from-template.py` - Create starter SVG from template45```bash46python3 ./scripts/generate-from-template.py architecture ./output/arch.svg '{"title":"My Diagram","nodes":[],"arrows":[]}'47```48- Loads a built-in SVG template49- Renders nodes, arrows, and legend entries from JSON input50- Escapes text content to keep output XML-valid5152### 3. `validate-svg.sh` - Validate SVG syntax53```bash54./scripts/validate-svg.sh <svg-file>55```56- Checks XML syntax57- Verifies tag balance58- Validates marker references59- Checks attribute completeness60- Validates path data6162### 4. `test-all-styles.sh` - Batch test all styles63```bash64./scripts/test-all-styles.sh65```66- Tests multiple diagram sizes67- Validates all generated SVGs68- Generates test report6970**When to use scripts:**71- Use scripts when generating complex SVGs to avoid syntax errors72- Scripts provide automatic validation and error reporting73- Recommended for production diagrams7475**When to generate SVG directly:**76- Simple diagrams with few elements77- Quick prototypes78- When you need full control over SVG structure7980## Workflow (Always Follow This Order)81821. **Classify** the diagram type (see Diagram Types below)832. **Extract structure** — identify layers, nodes, edges, flows, and semantic groups from user description843. **Plan layout** — apply the layout rules for the diagram type854. **Load style reference** — always load `references/style-1-flat-icon.md` unless user specifies another; load the matching `references/style-N.md` for exact color tokens and SVG patterns865. **Map nodes to shapes** — use Shape Vocabulary below876. **Check icon needs** — load `references/icons.md` for known products887. **Write SVG** with adaptive strategy (see SVG Generation Strategy below)898. **Validate**: Run `rsvg-convert file.svg -o /dev/null 2>&1` to check syntax909. **Export PNG**: `rsvg-convert -w 1920 file.svg -o file.png`9110. **Report** the generated file paths9293## Diagram Types & Layout Rules9495### Architecture Diagram96Nodes = services/components. Group into **horizontal layers** (top→bottom or left→right).97- Typical layers: Client → Gateway/LB → Services → Data/Storage98- Use `<rect>` dashed containers to group related services in the same layer99- Arrow direction follows data/request flow100- ViewBox: `0 0 960 600` standard, `0 0 960 800` for tall stacks101102### Data Flow Diagram103Emphasizes **what data moves where**. Focus on data transformation.104- Label every arrow with the data type (e.g., "embeddings", "query", "context")105- Use wider arrows (`stroke-width: 2.5`) for primary data paths106- Dashed arrows for control/trigger flows107- Color arrows by data category (not just Agent/RAG — use semantics)108109### Flowchart / Process Flow110Sequential decision/process steps.111- Top-to-bottom preferred; left-to-right for wide flows112- Diamond shapes for decisions, rounded rects for processes, parallelograms for I/O113- Keep node labels short (≤3 words); put detail in sub-labels114- Align nodes on a grid: x positions snap to 120px intervals, y to 80px115116### Agent Architecture Diagram117Shows how an AI agent reasons, uses tools, and manages memory.118Key conceptual layers to always consider:119- **Input layer**: User, query, trigger120- **Agent core**: LLM, reasoning loop, planner121- **Memory layer**: Short-term (context window), Long-term (vector/graph DB), Episodic122- **Tool layer**: Tool calls, APIs, search, code execution123- **Output layer**: Response, action, side-effects124Use cyclic arrows (loop arcs) to show iterative reasoning. Separate memory types visually.125126### Memory Architecture Diagram (Mem0, MemGPT-style)127Specialized agent diagram focused on memory operations.128- Show memory **write path** and **read path** separately (different arrow colors)129- Memory tiers: Working Memory → Short-term → Long-term → External Store130- Label memory operations: `store()`, `retrieve()`, `forget()`, `consolidate()`131- Use stacked rects or layered cylinders for storage tiers132133### Sequence Diagram134Time-ordered message exchanges between participants.135- Participants as vertical **lifelines** (top labels + vertical dashed lines)136- Messages as horizontal arrows between lifelines, top-to-bottom time order137- Activation boxes (thin filled rects on lifeline) show active processing138- Group with `<rect>` loop/alt frames with label in top-left corner139- ViewBox height = 80 + (num_messages × 50)140141### Comparison / Feature Matrix142Side-by-side comparison of approaches, systems, or components.143- Column headers = systems, row headers = attributes144- Row height: 40px; column width: min 120px; header row height: 50px145- Checked cell: tinted background (e.g. `#dcfce7`) + `✓` checkmark; unsupported: `#f9fafb` fill146- Alternating row fills (`#f9fafb` / `#ffffff`) for readability147- Max readable columns: 5; beyond that, split into two diagrams148149### Timeline / Gantt150Horizontal time axis showing durations, phases, and milestones.151- X-axis = time (weeks/months/quarters); Y-axis = items/tasks/phases152- Bars: rounded rects, colored by category, labeled inside or beside153- Milestone markers: diamond or filled circle at specific x position with label above154- ViewBox: `0 0 960 400` typical; wider for many time periods: `0 0 1200 400`155156### Mind Map / Concept Map157Radial layout from central concept.158- Central node at `cx=480, cy=280`159- First-level branches: evenly distributed around center (360/N degrees)160- Second-level branches: branch off first-level at 30-45° offset161- Use curved `<path>` with cubic bezier for branches, not straight lines162163### Class Diagram (UML)164Static structure showing classes, attributes, methods, and relationships.165- **Class box**: 3-compartment rect (name / attributes / methods), min width 160px166 - Top compartment: class name, bold, centered (abstract = *italic*)167 - Middle: attributes with visibility (`+` public, `-` private, `#` protected)168 - Bottom: method signatures, same visibility notation169- **Relationships**:170 - Inheritance (extends): solid line + hollow triangle arrowhead, child → parent171 - Implementation (interface): dashed line + hollow triangle, class → interface172 - Association: solid line + open arrowhead, label with multiplicity (1, 0..*, 1..*)173 - Aggregation: solid line + hollow diamond on container side174 - Composition: solid line + filled diamond on container side175 - Dependency: dashed line + open arrowhead176- **Interface**: `<<interface>>` stereotype above name, or circle/lollipop notation177- **Enum**: compartment rect with `<<enumeration>>` stereotype, values in bottom178- Layout: parent classes top, children below; interfaces to the left/right of implementors179- ViewBox: `0 0 960 600` standard; `0 0 960 800` for deep hierarchies180181### Use Case Diagram (UML)182System functionality from user perspective.183- **Actor**: stick figure (circle head + body line) placed outside system boundary184 - Label below figure, 13-14px185 - Primary actors on left, secondary/supporting on right186- **Use case**: ellipse with label centered inside, min 140×60px187 - Keep names verb phrases: "Create Order", "Process Payment"188- **System boundary**: large rect with dashed border + system name in top-left189- **Relationships**:190 - Include: dashed arrow `<<include>>` from base to included use case191 - Extend: dashed arrow `<<extend>>` from extension to base use case192 - Generalization: solid line + hollow triangle (specialized → general)193- Layout: system boundary centered, actors outside, use cases inside194- ViewBox: `0 0 960 600` standard195196### State Machine Diagram (UML)197Lifecycle states and transitions of an entity.198- **State**: rounded rect with state name, min 120×50px199 - Internal activities: small text `entry/ action`, `exit/ action`, `do/ activity`200 - **Initial state**: filled black circle (r=8), one outgoing arrow201 - **Final state**: filled circle (r=8) inside hollow circle (r=12)202 - **Choice**: small hollow diamond, guard labels on outgoing arrows `[condition]`203- **Transition**: arrow with optional label `event [guard] / action`204 - Guard conditions in square brackets205 - Actions after `/`206- **Composite/nested state**: larger rect containing sub-states, with name tab207- **Fork/join**: thick horizontal or vertical black bar (synchronization)208- Layout: initial state top-left, final state bottom-right, flow top-to-bottom209- ViewBox: `0 0 960 600` standard210211### ER Diagram (Entity-Relationship)212Database schema and data relationships.213- **Entity**: rect with entity name in header (bold), attributes below214 - Primary key attribute: underlined215 - Foreign key: italic or marked with (FK)216 - Min width: 160px; attribute font-size: 12px217- **Relationship**: diamond shape on connecting line218 - Label inside diamond: "has", "belongs to", "enrolls in"219 - Cardinality labels near entity: `1`, `N`, `0..1`, `0..*`, `1..*`220- **Weak entity**: double-bordered rect with double diamond relationship221- **Associative entity**: diamond + rect hybrid (rect with diamond inside)222- Line style: solid for identifying relationships, dashed for non-identifying223- Layout: entities in 2-3 rows, relationships between related entities224- ViewBox: `0 0 960 600` standard; wider `0 0 1200 600` for many entities225226### Network Topology227Physical or logical network infrastructure.228- **Devices**: icon-like rects or rounded rects229 - Router: circle with cross arrows230 - Switch: rect with arrow grid231 - Server: stacked rect (rack icon)232 - Firewall: brick-pattern rect or shield shape233 - Load Balancer: horizontal split rect with arrows234 - Cloud: cloud path (overlapping arcs)235- **Connections**: lines between device centers236 - Ethernet/wired: solid line, label bandwidth237 - Wireless: dashed line with WiFi symbol238 - VPN: dashed line with lock icon239- **Subnets/Zones**: dashed rect containers with zone label (DMZ, Internal, External)240- **Labels**: device hostname + IP below, 12-13px241- Layout: tiered top-to-bottom (Internet → Edge → Core → Access → Endpoints)242- ViewBox: `0 0 960 600` standard243244## UML Coverage Map245246Full mapping of UML 14 diagram types to supported diagram types:247248| UML Diagram | Supported As | Notes |249|-------------|-------------|-------|250| Class | Class Diagram | Full UML notation |251| Component | Architecture Diagram | Use colored fills per component type |252| Deployment | Architecture Diagram | Add node/instance labels |253| Package | Architecture Diagram | Use dashed grouping containers |254| Composite Structure | Architecture Diagram | Nested rects within components |255| Object | Class Diagram | Instance boxes with underlined name |256| Use Case | Use Case Diagram | Full actor/ellipse/relationship |257| Activity | Flowchart / Process Flow | Add fork/join bars |258| State Machine | State Machine Diagram | Full UML notation |259| Sequence | Sequence Diagram | Add alt/opt/loop frames |260| Communication | — | Approximate with Sequence (swap axes) |261| Timing | Timeline | Adapt time axis |262| Interaction Overview | Flowchart | Combine activity + sequence fragments |263| ER Diagram | ER Diagram | Chen/Crow's foot notation |264265## Shape Vocabulary266267Map semantic concepts to consistent shapes across all diagram types:268269| Concept | Shape | Notes |270|---------|-------|-------|271| User / Human | Circle + body path | Stick figure or avatar |272| LLM / Model | Rounded rect with brain/spark icon or gradient fill | Use accent color |273| Agent / Orchestrator | Hexagon or rounded rect with double border | Signals "active controller" |274| Memory (short-term) | Rounded rect, dashed border | Ephemeral = dashed |275| Memory (long-term) | Cylinder (database shape) | Persistent = solid cylinder |276| Vector Store | Cylinder with grid lines inside | Add 3 horizontal lines |277| Graph DB | Circle cluster (3 overlapping circles) | |278| Tool / Function | Gear-like rect or rect with wrench icon | |279| API / Gateway | Hexagon (single border) | |280| Queue / Stream | Horizontal tube (pipe shape) | |281| File / Document | Folded-corner rect | |282| Browser / UI | Rect with 3-dot titlebar | |283| Decision | Diamond | Flowcharts only |284| Process / Step | Rounded rect | Standard box |285| External Service | Rect with cloud icon or dashed border | |286| Data / Artifact | Parallelogram | I/O in flowcharts |287288## Arrow Semantics289290Always assign arrow meaning, not just color:291292| Flow Type | Color | Stroke | Dash | Meaning |293|-----------|-------|--------|------|---------|294| Primary data flow | blue `#2563eb` | 2px solid | none | Main request/response path |295| Control / trigger | orange `#ea580c` | 1.5px solid | none | One system triggering another |296| Memory read | green `#059669` | 1.5px solid | none | Retrieval from store |297| Memory write | green `#059669` | 1.5px | `5,3` | Write/store operation |298| Async / event | gray `#6b7280` | 1.5px | `4,2` | Non-blocking, event-driven |299| Embedding / transform | purple `#7c3aed` | 1px solid | none | Data transformation |300| Feedback / loop | purple `#7c3aed` | 1.5px curved | none | Iterative reasoning loop |301302Always include a **legend** when 2+ arrow types are used.303304## Layout Rules & Validation305306**Spacing**:307- Same-layer nodes: 80px horizontal, 120px vertical between layers308- Canvas margins: 40px minimum, 60px between node edges309- Snap to 8px grid: horizontal 120px intervals, vertical 120px intervals310311**Arrow Labels** (CRITICAL):312- MUST have background rect: `<rect fill="canvas_bg" opacity="0.95"/>` with 4px horizontal, 2px vertical padding313- Place mid-arrow, ≤3 words, stagger by 15-20px when multiple arrows converge314- Maintain 10px safety distance from nodes315316**Arrow Routing**:317- Prefer orthogonal (L-shaped) paths to minimize crossings318- Anchor arrows on component edges, not geometric centers319- Route around dense node clusters, use different y-offsets for parallel arrows320- Jump-over arcs (5px radius) for unavoidable crossings321322**Line Overlap Prevention** (CRITICAL - most common bug on Codex):323When two arrows must cross each other, ALWAYS use jump-over arcs to prevent visual overlap:324- Crossing horizontal arrows: add a small semicircle arc (radius 5px, stroke same color as arrow, fill none) that "jumps over" the other line325- SVG pattern for jump-over: use a white/matching-background arc on the lower layer, then draw the upper arc on top326- Multiple crossings: stagger arc radii (5px, 7px, 9px) so arcs don't overlap each other327- Never let two arrows' straight-line segments cross without a jump-over arc328329**Validation Checklist** (run before finalizing):3301. **Arrow-Component Collision**: Arrows MUST NOT pass through component interiors (route around with orthogonal paths)3312. **Text Overflow**: All text MUST fit with 8px padding (estimate: `text.length × 7px ≤ shape_width - 16px`)3323. **Arrow-Text Alignment**: Arrow endpoints MUST connect to shape edges (not floating); all arrow labels MUST have background rects3334. **Container Discipline**: Prefer arrows entering and leaving section containers through open gaps between components, not through inner component bodies334335## SVG Technical Rules336337- ViewBox: `0 0 960 600` default; `0 0 960 800` tall; `0 0 1200 600` wide338- Fonts: embed via `<style>font-family: ...</style>` — no external `@import` (breaks rsvg-convert)339- `<defs>`: arrow markers, gradients, filters, clip paths340- Text: minimum 12px, prefer 13-14px labels, 11px sub-labels, 16-18px titles341- All arrows: `<marker>` with `markerEnd`, sized `markerWidth="10" markerHeight="7"`342- Drop shadows: `<feDropShadow>` in `<filter>`, apply sparingly (key nodes only)343- Curved paths: use `M x1,y1 C cx1,cy1 cx2,cy2 x2,y2` cubic bezier for loops/feedback arrows344- Clip content: use `<clipPath>` if text might overflow a node box345346## SVG Generation & Error Prevention347348**MANDATORY: Python List Method** (ALWAYS use this):349```python350python3 << 'EOF'351lines = []352lines.append('<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 960 700">')353lines.append(' <defs>')354# ... each line separately355lines.append('</svg>')356357with open('/path/to/output.svg', 'w') as f:358 f.write('\n'.join(lines))359print("SVG generated successfully")360EOF361```362363**Why mandatory**: Prevents character truncation, typos, and syntax errors. Each line is independent and easy to verify.364365**Pre-Tool-Call Checklist** (CRITICAL - use EVERY time):3661. ✅ Can I write out the COMPLETE command/content right now?3672. ✅ Do I have ALL required parameters ready?3683. ✅ Have I checked for syntax errors in my prepared content?369370**If ANY answer is NO**: STOP. Do NOT call the tool. Prepare the content first.371372**Error Recovery Protocol**:373- **First error**: Analyze root cause, apply targeted fix374- **Second error**: Switch method entirely (Python list → chunked generation)375- **Third error**: STOP and report to user - do NOT loop endlessly376- **Never**: Retry the same failing command or call tools with empty parameters377378**Validation** (run after generation):379```bash380rsvg-convert file.svg -o /tmp/test.png 2>&1 && echo "✓ Valid" && rm /tmp/test.png381```382383**If using `generate-from-template.py`**:384- Prefer `source` / `target` node ids in arrow JSON so the generator can snap to node edges385- Keep `x1,y1,x2,y2` as hints or fallback coordinates, not the main routing primitive386- Let the generator choose orthogonal routes; avoid hardcoding center-to-center straight lines unless the path is guaranteed clear387388**Common Syntax Errors to Avoid**:389- ❌ `yt-anchor` → ✅ `y="60" text-anchor="middle"`390- ❌ `x="390` (missing y) → ✅ `x="390" y="250"`391- ❌ `fill=#fff` → ✅ `fill="#ffffff"`392- ❌ `marker-end=` → ✅ `marker-end="url(#arrow)"`393- ❌ `L 29450` → ✅ `L 290,220`394- ❌ Missing `</svg>` at end395396## Output397398- **Default**: `./[derived-name].svg` and `./[derived-name].png` in current directory399- **Custom**: user specifies path with `--output /path/` or `输出到 /path/`400- **PNG export**: `rsvg-convert -w 1920 file.svg -o file.png` (1920px = 2x retina)401402## Styles403404| # | Name | Background | Best For |405|---|------|-----------|----------|406| 1 | **Flat Icon** (default) | White | Blogs, docs, presentations |407| 2 | **Dark Terminal** | `#0f0f1a` | GitHub, dev articles |408| 3 | **Blueprint** | `#0a1628` | Architecture docs |409| 4 | **Notion Clean** | White, minimal | Notionnce |410| 5 | **Glassmorphism** | Dark gradient | Product sites, keynotes |411| 6 | **Claude Official** | Warm cream `#f8f6f3` | Anthropic-style diagrams |412| 7 | **OpenAI Official** | Pure white `#ffffff` | OpenAI-style diagrams |413414Load `references/style-N.md` for exact color tokens and SVG patterns.415416## Style Selection417418**Default**: Style 1 (Flat Icon) for most diagrams. Load `references/style-diagram-matrix.md` for detailed style-to-diagram-type recommendations.419420These patterns appear frequently — internalize them:421422**RAG Pipeline**: Query → Embed → VectorSearch → Retrieve → Augment → LLM → Response423**Agentic RAG**: adds Agent loop with Tool use between Query and LLM424**Agentic Search**: Query → Planner → [Search Tool / Calculator / Code] → Synthesizer → Response425**Mem0 / Memory Layer**: Input → Memory Manager → [Write: VectorDB + GraphDB] / [Read: Retrieve+Rank] → Context426**Agent Memory Types**: Sensory (raw input) → Working (context window) → Episodic (past interactions) → Semantic (facts) → Procedural (skills)427**Multi-Agent**: Orchestrator → [SubAgent A / SubAgent B / SubAgent C] → Aggregator → Output428**Tool Call Flow**: LLM → Tool Selector → Tool Execution → Result Parser → LLM (loop)