Diagram

aid: diagram-la
name: Diagram
description: Diagram (diagram.la) is a hosted service for making and sharing diagrams drawn by AI. Users connect an AI tool
  such as Claude, ChatGPT, Claude Code, Codex, Cursor or Gemini CLI, describe a diagram in plain words, and the AI publishes
  it to Diagram through its MCP server or API, where it lives as an HTML page at a permanent private or public link; asking
  for a change updates the diagram at the same URL. It also supports publishing from CI, and its guides cover flowcharts,
  architecture, C4, ER, sequence and Mermaid diagrams.
url: https://artifacts.apis.io/diagram-la/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-05 (modular-v1; was harvest)
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  probe_state: covered
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.20'
created: '2026-11-05'
modified: '2026-11-05'
tags:
- Company
- Diagramming
- Visualization
- Artificial Intelligence
- MCP
- Collaboration
- Developer Tools
tags_raw:
- Company
- Diagrams
- Visualization
- Artificial Intelligence
- MCP
- Collaboration
- Developer Tools
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://diagram.la/brand/diagram-logo.svg
common:
- type: AgenticAccess
  url: agentic-access/diagram-la-agentic-access.yml
- type: RateLimits
  url: rate-limits/diagram-la-rate-limits.yml
- type: Plans
  url: plans/diagram-la-plans-pricing.yml
- type: Spectral
  url: rules/diagram-la-rules.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Idempotency
  url: conventions/diagram-la-conventions.yml
- type: Conventions
  url: conventions/diagram-la-conventions.yml
- type: Deprecation
  url: lifecycle/diagram-la-lifecycle.yml
- type: Lifecycle
  url: lifecycle/diagram-la-lifecycle.yml
- type: ErrorCatalog
  url: errors/diagram-la-error-codes.yml
- type: Conformance
  url: conformance/diagram-la-conformance.yml
- type: Overlay
  url: overlays/diagram-la-openapi-overlay.yaml
- type: LLMsTxt
  url: llms/diagram-la-llms.txt
- type: ToolCrosswalk
  url: mcp/diagram-la-tool-crosswalk.yml
- type: MCPServer
  url: mcp/diagram-la-mcp.yml
- type: WellKnown
  url: well-known/diagram-la-well-known.yml
- type: Hosts
  url: hosts/diagram-la-hosts.yml
- type: IntegrationEdges
  url: integrations/diagram-la-integration-edges.yml
- type: Vendors
  url: vendors/diagram-la-vendors.yml
- type: Authentication
  url: authentication/diagram-la-authentication.yml
- type: DomainSecurity
  url: security/diagram-la-domain-security.yml
- type: Website
  url: https://diagram.la/
- type: Documentation
  url: https://diagram.la/docs
- type: GettingStarted
  url: https://diagram.la/docs
- type: APIReference
  url: https://diagram.la/docs/reference
- type: Support
  url: https://diagram.la/docs/faq
- type: Pricing
  url: https://diagram.la/pricing
- type: SignUp
  url: https://diagram.la/signin/dashboard
- type: Login
  url: https://diagram.la/start
- type: TermsOfService
  url: https://diagram.la/terms
- type: PrivacyPolicy
  url: https://diagram.la/privacy
- type: LLMsTxt
  url: https://diagram.la/llms.txt
apis:
- aid: diagram-la:diagram-mcp-server
  name: Diagram MCP Server
  description: Remote MCP server at https://diagram.la/mcp that lets AI tools save, edit, publish and fetch diagrams (documented
    tools include save_diagram, edit_diagram, publish_diagram, setup_repo and get_diagram); sign-in via browser OAuth or a
    Diagram API key. Anonymous requests return 401.
  humanURL: https://diagram.la/docs/reference
  baseURL: https://diagram.la/mcp
  tags:
  - MCP
  properties:
  - type: Documentation
    url: https://diagram.la/docs/chat-apps
- aid: diagram-la:diagram-la-diagrams-api
  name: Diagram Diagrams API
  description: The Diagrams API from Diagram — 2 operation(s) for diagrams.
  humanURL: https://diagram.la/docs/api
  baseURL: https://diagram.la/api/v1
  tags:
  - Diagramming
  tags_raw:
  - Diagrams
  properties:
  - type: OpenAPI
    url: openapi/diagram-la-diagrams-api-openapi.yml
  - type: Documentation
    url: https://diagram.la/docs/api
- aid: diagram-la:diagram-la-projects-api
  name: Diagram Projects API
  description: The Projects API from Diagram — 4 operation(s) for projects.
  humanURL: https://diagram.la/docs/api
  baseURL: https://diagram.la/api/v1
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/diagram-la-projects-api-openapi.yml
  - type: Documentation
    url: https://diagram.la/docs/api
x-coverage:
  state: covered
  reason: identity-verified
  detail: 'Name, description, tags, image and link pointers taken from https://diagram.la/ (title "Diagram: Make and share
    diagrams with AI", og:site_name "Diagram") and its footer/nav links; all fetched 200 on 2026-11-05.'
  evidence:
  - url: https://diagram.la/
    status: 200
  - url: https://diagram.la/docs
    status: 200
  - url: https://diagram.la/docs/reference
    status: 200
  - url: https://diagram.la/docs/faq
    status: 200
  - url: https://diagram.la/pricing
    status: 200
  - url: https://diagram.la/signin/dashboard
    status: 200
  - url: https://diagram.la/start
    status: 200
  - url: https://diagram.la/terms
    status: 200
  - url: https://diagram.la/privacy
    status: 200
  - url: https://diagram.la/llms.txt
    status: 200
  - url: https://diagram.la/brand/diagram-logo.svg
    status: 200
x-enrichment:
  date: '2026-11-05'
  status: enriched
  artifacts_added: 31
  pass: modular-v1
  engine: identity=anthropic,contract=anthropic,surfaces=anthropic,docs=anthropic,regulatory=anthropic