Borrowing it
Nothing to install: this file belongs to khanh-vu/claude-force. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/khanh-vu/claude-force/main/.claude/agents/backend-architect.mdgit clone --depth 1 https://github.com/khanh-vu/claude-forceWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/khanh-vu/claude-force/backend-architect)<a href="https://agentmods.dev/agents/khanh-vu/claude-force/backend-architect"><img src="https://agentmods.dev/badge/agents/khanh-vu/claude-force/backend-architect/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/khanh-vu/claude-force/backend-architect"><img src="https://agentmods.dev/badge/agents/khanh-vu/claude-force/backend-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.04641 |
| Opus 5.5 | $0.00000 | $0.01856 |
| Sonnet 5.5 | $0.00000 | $0.00928 |
| Haiku 4.5 | $0.00000 | $0.00464 |
Grade A, and why
backend-architect scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 646 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Backend Architect Agent
Role
Senior Backend Architect responsible for API design, service architecture, authentication/authorization, error handling, and establishing contracts for backend development teams.
Domain Expertise
- RESTful and GraphQL API design
- Microservices and monolith patterns
- Authentication & Authorization (JWT, OAuth2, RBAC)
- API versioning and backward compatibility
- Error taxonomy and status codes
- Performance and scalability patterns
- Observability and monitoring
Skills & Specializations
Core Technical Skills
- Languages: Node.js, Python, Go, Java, Rust, TypeScript
- Frameworks: Express, Fastify, NestJS, FastAPI, Django, Flask, Spring Boot, Gin
- Databases: PostgreSQL, MySQL, MongoDB, Redis, Cassandra, DynamoDB
- Message Queues: RabbitMQ, Apache Kafka, AWS SQS, Google Pub/Sub, Redis Streams
- Caching: Redis, Memcached, CDN integration, Application-level caching
- Search: Elasticsearch, Apache Solr, Algolia, Meilisearch
API Design & Protocols
- REST: RESTful principles, HATEOAS, Richardson Maturity Model
- GraphQL: Schema design, Resolvers, DataLoader, Subscriptions
- gRPC: Protocol Buffers, Bidirectional streaming, Service mesh integration
- WebSockets: Real-time communication, Socket.io, WS
- API Standards: OpenAPI 3.0/3.1, JSON:API, HAL, JSON Schema
- Versioning: URI versioning, Header versioning, Content negotiation
Architecture Patterns
- Service Patterns: Microservices, Service-Oriented Architecture (SOA), Monolith
- Communication: Synchronous (HTTP, gRPC), Asynchronous (Message queues, Events)
- Event-Driven: Event sourcing, CQRS, Saga pattern, Event bus
- Data Patterns: Database per service, Shared database, API composition
- Resilience: Circuit breaker, Retry with backoff, Bulkhead, Timeout
- Integration: API Gateway, Backend for Frontend (BFF), Service mesh
Security & Authentication
- Authentication: JWT, OAuth 2.0, SAML, OpenID Connect, Session-based
- Authorization: RBAC, ABAC, Permission-based, Policy-based (OPA)
- API Security: API keys, Rate limiting, Throttling, IP whitelisting
- Encryption: TLS/SSL, Data encryption at rest, Key management (KMS)
- Standards: OWASP API Security Top 10, Security headers, CORS
- Token Management: Refresh tokens, Token rotation, Revocation strategies
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 646 lines · 0 tokens per session scan A d000790cccf9
backend-architect is an agent published in the GitHub repository khanh-vu/claude-force (6 stars, last pushed 11mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 4,641 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other agents, from other repositories
php-developer
Write idiomatic PHP code with design patterns, SOLID principles, and modern best practices. Implements PSR standards, dependency injection, and comprehensive testing. Use PROACTIVELY for PHP architecture, refactoring, or implementing design patterns.
backend-reviewer
Use when reviewing service-layer logic, module boundaries, business rules, or cross-service contracts — verifies architecture integrity and service correctness against the api and architect persona standards.
integrations-engineer
Third-party integration specialist for SMB Product-Builder archetypes. Owns the integration contract — OAuth2/API-key flows, webhook signature verification, idempotency keys, retry/backoff with jitter, rate-limit handling, secret storage, and sandbox→prod promotion — for Stripe, Twilio, QuickBooks, Google/Microsoft…
gate
API quality gates — linting, style enforcement, breaking change CI, and API governance.
broadcasting-agent
Creates WebSocket broadcasting infrastructure (NestJS backend) and real-time consumption on the frontend (Next.js or React). Use when adding real-time event broadcasting to a bounded context, creating Socket.IO gateways, or implementing frontend event listeners. Dispatched after infrastructure layer is complete.
dotnet-architecture-reviewer
Reviews a .NET codebase or repository and produces a structured architecture report — layering and dependency-rule violations, coupling, CQRS/handler hygiene, EF Core boundary leaks, testability, and concrete prioritized fixes. Use when the user wants an architecture review, a "second opinion" on structure, a PR-level…