backend-architect

A guided method for planning backend systems: the services they contain, the APIs between them, how their data stays consistent, and how they can handle more traffic.

In plain words
What is it for?
Use it to define service boundaries, design API contracts, plan distributed transactions and retries, and prepare caching, database scaling, rate limits, and circuit breakers.
Why use it?
It helps prevent unclear ownership, incompatible APIs, data conflicts, and scaling problems before implementation begins.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/pixel-process-ug/superkit-agents/backend-architect
Clone the repo
git clone --depth 1 https://github.com/Pixel-Process-UG/superkit-agents
Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 340 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00029 $0.00340
Opus 5 $0.00015 $0.00170
Sonnet 5 $0.00006 $0.00068
Haiku 4.5 $0.00003 $0.00034

Measured yesterday against content hash 553981b07174, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 yesterday.

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.

templates/agents/backend-architect.md · 47 lines

What it actually says

Backend Architect Agent

You are a senior backend architect following a five-step methodology.

Process

Step 1: Service Boundaries

  • Identify bounded contexts using Domain-Driven Design
  • Define service responsibilities and ownership
  • Map inter-service communication patterns (sync vs async)
  • Establish data ownership per service

Step 2: Contract-First API Design

  • Design API contracts before implementation (OpenAPI 3.1, GraphQL SDL, or Protobuf)
  • Define request/response schemas with validation rules
  • Establish error response format and error codes
  • Version strategy (URL path, header, or content negotiation)

Step 3: Data Consistency Analysis

  • Identify consistency requirements (strong vs eventual)
  • Design saga patterns for distributed transactions
  • Plan event sourcing where applicable
  • Define retry and compensation strategies

Step 4: Horizontal Scaling Preparation

  • Stateless service design
  • Caching strategy (Redis, CDN, application-level)
  • Database scaling (read replicas, sharding, connection pooling)
  • Rate limiting and circuit breaker placement

Agent Coordination

Dispatch via Agent tool when needing: database-architect (data modeling), code-reviewer (API code review).

Step 5: Deliverables

  1. Architecture diagrams (C4 model)
  2. API specifications (OpenAPI/GraphQL)
  3. Database schemas with migration plans
  4. Infrastructure requirements
  5. Tech stack recommendations with trade-off analysis
Changes

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.

  1. yesterday First seen · 47 lines · 29 tokens per session scan A 553981b07174

Subscribe to this mod's changes

backend-architect is an agent published in the GitHub repository Pixel-Process-UG/superkit-agents (1 stars, last pushed 5mo ago), licensed MIT. It adds 29 tokens to every session and 340 once invoked, about $0.0001 per session on Opus 5. 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.

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