Mermaid Diagram Templates
Start from practical architecture, database, AI, and documentation examples, then export locally with no signup, no watermark, and no upload. Every template opens directly in the Mermaid Online.
Architecture, deployment, identity, and service diagrams ready for technical docs.
ER diagrams for SaaS, commerce, permissions, and content systems.
RAG, agents, ETL, ML pipelines, and LLM system diagrams for modern AI docs.
Engineering process diagrams for README files, runbooks, and release docs.
Software Architecture
Architecture, deployment, identity, and service diagrams ready for technical docs.
OAuth Login Flow
OAuth 2.0 login sequence: token exchange, user upsert, and authenticated API access.
API Gateway Microservices
Flowchart showing API gateway routing, auth, rate limiting, and service fan-out.
CI/CD Deployment Pipeline
CI/CD release pipeline: PR checks, staging, approval, production, and rollback.
Kubernetes Deployment
Cluster flowchart with ingress, service, app replicas, ConfigMap, secrets, and database.
Database Design
ER diagrams for SaaS, commerce, permissions, and content systems.
AI & Data
RAG, agents, ETL, ML pipelines, and LLM system diagrams for modern AI docs.
RAG Application Architecture
RAG flowchart: chunking, embeddings, vector search, reranking, and LLM answer generation.
AI Agent Tool Calling
Agent sequence diagram: planning, tool calls, observations, and a cited final answer.
ETL Data Pipeline
ETL flowchart from raw sources through validation, transformation, and warehouse load.
Documentation
Engineering process diagrams for README files, runbooks, and release docs.
Git Branching Workflow
Git graph for feature branches, review, release branch, hotfix, and production tag.
Incident Response Flow
Incident runbook flowchart: triage, severity call, mitigation, updates, and postmortem.
Feature Release Process
Release flowchart from idea intake through design, build, QA, beta, launch, and metrics.