Visual judgment for AI agents

Agents can write. Agents can code. Now let them think visually.

Turn messy context into the right visual—not another wall of text or boxes-and-arrows diagram.

Install the diagram skill →See it live ↓

17 private local diagrams · your approved brand profile · source-editable HTML & SVG

35 structured visual families·9 confirmed engines·341-framework reference ontology

The difference is the choice

A diagram agent should know what deserves to exist.

Most agents turn every situation into prose—or the same rounded boxes and arrows. Diagrams for Agents reads the decision hiding inside the context, chooses a fitting visual form, then applies structure, evidence, and your brand.

Messy context

“AWS cost increased 37%. RDS caused 48% of the increase, idle EKS nodes 31%, NAT traffic 14%, and other costs 7%. Engineering can address EKS now; the database team owns RDS.”

Without visual judgmentGeneric flowchart

Cloud costs

Review spend

Take action

Reduce cost

It draws the topic. It does not reveal the decision.

With Diagrams for AgentsDrivers + ownership + action

Cost increase+37%

01RDS48%DatabaseRight-size

02EKS31%EngineeringRemove idle nodes

03NAT14%PlatformReduce transfer

04Other7%FinOpsReview

The visual exposes contribution, owner, and the next intervention at a glance.

01 · Chosen visualAgent-selected

Agent's choiceBusiness Model Canvasvalidated

I chose the Business Model Canvas because it clearly maps all the core elements of your B2B SaaS for AI meeting notes in a single visual.

02 · Your context

Describe the situation.Don't choose a diagram.

Include concrete facts such as actors, steps, comparisons, dependencies, trade-offs, or numbers. If the context is too thin, we'll ask for more instead of forcing a bad visual.

No format required. The agent chooses a supported visual and validates it against your words.

Safe examplessituations, not diagram types

For developers & agents

Add it in one call.

Diagrams for Agents is an API and an MCP server. Your app or agent sends the situation in plain language; you get back a validated VisualPayload plus a hosted render link with SVG and PNG downloads. Local Mode can also carry an approved brand profile and decision brief, so the artifact looks native to the work around it. No diagram service to run.

1
Get a key, or drop the MCP server into Claude or Cursor.
2
Make one call with your context. Diagrams for Agents chooses a supported visual and rejects unsupported evidence.
3
Use the result as structured JSON, or open the render link to download SVG or PNG.

Get your free API key →

render.sh

# Try without a key. Add Authorization for 25 renders/day.
curl -X POST https://diagrams.4agents.fyi/api/v1/render \
  -H "Content-Type: application/json" \
  -d '{ "context": "Fintech: partner-led instant KYC, lower CAC,
                    no licence, short runway, UPI rails opening,
                    RBI tightening",
        "intent": "strategic options" }'   # intent optional

# → { "ok": true, "framework": "swot", "payload": {…} }

SWOTPorter's Five ForcesBusiness Model CanvasValue Proposition CanvasBlue Ocean Value CurveCustomer JourneyService BlueprintEmpathy MapDouble DiamondRACIFishboneSIPOCMcKinsey 7SStrategy MapPESTELAnsoffFunnel2×2 MatrixMind MapOrg ChartC4 ArchitectureSequenceER DiagramState MachineGanttTimelineFlowchartSankeyRadarHeatmapBar & LineGaugeSWOTPorter's Five ForcesBusiness Model CanvasValue Proposition CanvasBlue Ocean Value CurveCustomer JourneyService BlueprintEmpathy MapDouble DiamondRACIFishboneSIPOCMcKinsey 7SStrategy MapPESTELAnsoffFunnel2×2 MatrixMind MapOrg ChartC4 ArchitectureSequenceER DiagramState MachineGanttTimelineFlowchartSankeyRadarHeatmapBar & LineGauge

Type anything. Get the right diagram.

35 structured families. 9 confirmed engines.

Describe a situation in plain words and Diagrams for Agents chooses a production-supported visual family or syntax engine—from a boardroom SWOT to a microservice map. You can still name the format when you want control.

0structured visual families

0confirmed syntax engines

0framework reference ontology

1plain-English prompt

Frameworks & canvases

SWOT · Porter Five Forces · Business Model Canvas · Value Proposition Canvas · Ansoff · PESTEL · +more

Flowcharts & process

Flowchart · Process map · Swimlane · SIPOC · Value stream · BPMN · +more

Software & UML

Sequence · Class · State · Activity · Component · C4 context/container · +more

Data & charts

Bar · Line · Area · Scatter · Heatmap · Funnel · +more

Structure & trees

Org chart · Hierarchy · Mind map · Pyramid · Fishbone · Value chain · +more

Time & planning

Timeline · Gantt · Roadmap · Cycle / flywheel · Double diamond · Kanban · +more

One product · two trust boundaries

Start open and local. Call the judgment engine when the work demands it.

The open skill is the distribution surface. Verified MCP is the dependable intelligence layer for broader, higher-stakes, or product-integrated work.

Open LocalPrivate by default

Useful in five minutes.

Install the skill, keep the source on your machine, and create a branded artifact your team can inspect and edit.

17 bounded diagram primitives
Portable brand profile and decision brief
Self-contained HTML, SVG, JSON spec, and receipt
Local Mermaid redraw and artifact validation

Install the open skill →

Verified MCP + APIExplicit opt-in

Judgment you can build a product on.

Send messy context when you want the hosted system to select from the broader catalogue, validate the structure, and return a stable application contract.

Automatic selection across 35 supported visual families
341-framework reference ontology
Evidence and schema validation
Renderer routing across nine confirmed engines
Structured VisualPayload and hosted render links

Get a free API key →

The rule: open the taste, primitives, artifacts, and brand contract. Keep broad automatic judgment, hosted validation, renderer operations, and API reliability MCP-driven.

Whatever you work on

Built for every domain.

A 341-framework reference ontology across 12 disciplines helps Diagrams for Agents recognize the job. It renders the result through 35 supported visual families and 9 confirmed engines today.

43frameworks

Strategy

SWOT Analysis · TOWS Matrix · PESTLE Analysis

42frameworks

Operations & process

APQC Process Classification Framework (PCF) · Business Process Model and Notation (BPMN) · SIPOC Diagram

38frameworks

Product & UX

Product Strategy Stack · Product Vision Board · Product-Market Fit Pyramid

32frameworks

Business model

Business Model Canvas · Value Proposition Canvas · Lean Canvas

28frameworks

Marketing & growth

STP Framework · 4Ps Marketing Mix · 7Ps Services Marketing Mix

28frameworks

Org & people

Operating Model Canvas · Business Capability Map · Organization Chart

26frameworks

Delivery & change

Project Charter · Work Breakdown Structure (WBS) · Gantt Chart

26frameworks

Decision & systems

Issue Tree · MECE Framework · Minto Pyramid Principle

22frameworks

Sales & GTM

GTM Strategy Canvas · Sales Funnel · BANT

20frameworks

Finance & metrics

Three Financial Statements Model · Discounted Cash Flow (DCF) · Dividend Discount Model

20frameworks

Risk & governance

COSO ERM Framework · COSO Internal Control Framework · ISO 31000 Risk Process

16frameworks

ESG & impact

Triple Bottom Line · ESG Materiality Matrix · Double Materiality Matrix

Not another text-to-diagram toy

Three things nobody else does together.

Anyone can turn a prompt into boxes. Diagrams for Agents turns messy context into the correct framework, filled and verified.

Picks the right diagram

SWOT, Porter, RACI, funnels, journey maps, flowcharts, UML, ER diagrams, charts, timelines and more. It reads your context and picks the fit, so you don't have to name it.

Evidence before assertion

A validation gate rejects empty or malformed output and retries. Business-framework items need an exact supporting quote from your prompt. No "Strength 1", no "lorem ipsum", no invented SWOT threat.

Renders on your brand

Core structured families render natively and technical diagrams use a confirmed engine set. The hosted viewer provides SVG and PNG downloads; the API also preserves the structured payload.

Real output · one prompt each

Diagrams most people never get to make.

Every one of these came from a single plain-English prompt. The kind of diagram that normally takes a consultant, a template, and an afternoon.

Blue Ocean Value CurvePrompt“Plot our budget airline against legacy carriers across price, meals, lounges, seat comfort, frequency, boarding speed and friendliness.”

Business Model CanvasPrompt“A B2B SaaS selling AI meeting notes: partners, activities, resources, value props, channels, segments, costs and revenue.”

Value Proposition CanvasPrompt“Map the value proposition for a meal-kit startup for busy professionals who want healthy dinners without the planning.”

Double DiamondPrompt“Redesign a checkout flow: discover, define, develop, deliver.”

Empathy MapPrompt“A first-time home buyer using a mortgage app: what they say, think, do and feel, plus their pains and gains.”

Service BlueprintPrompt“Blueprint a hotel check-in across arrival, reception, room, in-stay and checkout, with frontstage, backstage and support lanes.”

Give your agent a better way to think visually.

Install the local skill for private diagrams, or try the hosted engine before integrating the API.

Try the live demo Install the diagram skill →