microservices-architect

Designs distributed system architectures, decomposes monoliths into bounded-context services, recommends communication patterns, and produces service boundary diagrams and resilience strategies. Use when designing distributed systems, decomposing monoliths, or implementing microservices patterns — including service boundaries, DDD, saga patterns, event sourcing, CQRS, service mesh, or distributed tracing.

1.08x

Quality

92%

Does it follow best practices?

Impact

89%

1.08x

Average score across 6 eval scenarios

Securityby

Passed

No known issues

Evaluation results

95%

-1%

E-Commerce Platform Decomposition

Domain-driven monolith decomposition

Criteria

Without context

With context

Capability-based services

73%

No shared databases

100%

Database per service stated

100%

Cross-service data via APIs

100%

Leaf-first migration order

100%

No distributed monolith

100%

90%

Async for cross-aggregate ops

100%

No shared business logic library

100%

Reasonable service count

100%

Anti-patterns section present

100%

96%

11%

Payment Gateway Integration Service

Resilience patterns implementation

Criteria

Without context

With context

Circuit breaker present

100%

Exponential backoff retry

100%

Jitter in retry delays

100%

Idempotency key used

100%

Bulkhead isolation

100%

Timeout configured

100%

87%

Only transient errors retried

100%

Correlation ID propagated

100%

Liveness endpoint

100%

Readiness endpoint

100%

Graceful fallback on circuit open

28%

57%

RESILIENCE_NOTES.md present

100%

81%

Order Service Observability Instrumentation

Observability and API design

Criteria

Without context

With context

Structured JSON logging

100%

Correlation ID in logs

100%

Prometheus metrics exposed

100%

RED method metrics

100%

OpenTelemetry tracing

100%

Trace export configured

75%

100%

Correlation ID in trace span

100%

URL versioning used

Cursor-based pagination

Liveness health endpoint

100%

Readiness health endpoint

100%

42%

SLO definition present

100%

87%

Reliable Checkout Workflow for a Flash-Sale Platform

Saga orchestration with compensation

Criteria

Without context

With context

execute() and compensate() per step

100%

Saga state persisted

100%

State updated after each step

100%

Compensations execute in reverse

100%

Idempotency check per step

70%

100%

No 2PC used

100%

Async service communication

Graceful fallback on failure

57%

100%

Correlation ID propagated

85%

57%

Incomplete sagas resume on restart

100%

No synchronous long-running chain

71%

DESIGN_NOTES.md present

100%

91%

11%

Financial Ledger with Full Audit Trail

Event sourcing and CQRS

Criteria

Without context

With context

Events immutable and append-only

100%

Event schema has causationId

Event schema has correlationId

100%

Event store SQL schema correct

77%

100%

Index on (aggregate_id, version)

85%

100%

Snapshot table defined

100%

Snapshot strategy documented

100%

State reconstruction uses snapshot

100%

CQRS read model separated

100%

Read model updated via event handler

100%

Event versioning present

100%

Temporal query supported

100%

Past tense event naming

100%

84%

Internal API and Event Design for a Product Recommendation Platform

gRPC internal APIs and event schema design

Criteria

Without context

With context

gRPC for internal API

100%

Protobuf service definition

100%

gRPC error status codes used

12%

Event schema has eventId

100%

Event schema has eventVersion

100%

Event schema has correlationId

100%

Event schema has causationId

Past tense domain event names

100%

Domain events contain minimal data

71%

100%

Kafka chosen for multi-consumer events

100%

REST for external/public API

100%

Integration events versioned and backward-compatible

100%

ARCHITECTURE.md present

100%

Repository: jeffallan/claude-skills
Commit: 5b76101

Evaluated: 27 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

E-Commerce Platform Decomposition Payment Gateway Integration Service Order Service Observability Instrumentation Reliable Checkout Workflow for a Flash-Sale Platform Financial Ledger with Full Audit Trail Internal API and Event Design for a Product Recommendation Platform

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