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
Sequence diagram for OAuth 2.0 login, 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
Release pipeline from pull request through tests, staging, approval, production, and rollback.
Kubernetes Deployment
Cluster view with ingress, service, deployment replicas, config, secrets, and database dependency.
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
Flowchart for document ingestion, chunking, embeddings, vector search, reranking, and LLM response generation.
AI Agent Tool Calling
Sequence diagram showing an agent planning, calling tools, observing results, and returning a final answer.
ETL Data Pipeline
Data pipeline from raw sources through validation, transformation, warehouse load, and dashboard refresh.
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
Operational runbook flow for alert triage, severity decision, mitigation, communication, and postmortem.
Feature Release Process
Product release journey from idea intake through design, build, QA, beta, launch, and measurement.