orchestrator-opencode: Agent for Claude Code

.opencode/agents/backend-architect.md

backend-architect is an agent for Claude Code, OpenCode from bc1xxx/orchestrator-opencode. It costs 16 tokens per session (866 once invoked), scanned A, original, MIT.

A coding agent focused on server-side software, including APIs, databases, application logic, and backend system design. It also follows shared rules against inventing technical details.

In plain words
What is it for?
Use it for API design, database work, server logic, backend architecture, and questions about scaling backend systems.
Why use it?
It gives backend concerns a dedicated reviewer and implementer, helping keep server design separate from frontend or other project work.

Agent for Claude CodeOpenCode

Written for OpenCode and Claude Code: installed under .opencode/, but also a Claude Code subagent (agents/*.md). Also seen: mentions subagents; mentions OpenCode.

This is bc1xxx/orchestrator-opencode's own configuration. It tells Claude Code and OpenCode how to work on orchestrator-opencode itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything orchestrator-opencode configures →

Reuse

Borrowing it

Nothing to install: this file belongs to bc1xxx/orchestrator-opencode. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/bc1xxx/orchestrator-opencode/main/.opencode/agents/backend-architect.md
Clone the repo
git clone --depth 1 https://github.com/bc1xxx/orchestrator-opencode

Made for: Claude Code, OpenCode.

Wrote 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.

agentmods badge for backend-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/bc1xxx/orchestrator-opencode/backend-architect/github.svg)](https://agentmods.dev/agents/bc1xxx/orchestrator-opencode/backend-architect)
Your own site
<a href="https://agentmods.dev/agents/bc1xxx/orchestrator-opencode/backend-architect"><img src="https://agentmods.dev/badge/agents/bc1xxx/orchestrator-opencode/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.

agentmods 80×15 button for backend-architect

Your own site · 80×15
<a href="https://agentmods.dev/agents/bc1xxx/orchestrator-opencode/backend-architect"><img src="https://agentmods.dev/badge/agents/bc1xxx/orchestrator-opencode/backend-architect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 866 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00016 $0.00866
Opus 5.5 $0.00006 $0.00346
Sonnet 5.5 $0.00003 $0.00173
Haiku 4.5 $0.00002 $0.00087

Measured 2mo ago against content hash a2410433f6d1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 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.

.opencode/agents/backend-architect.md · 135 lines

What it actually says

============================================================ ANTI-HALLUCINATION STANDARD Multi-Agent System Enforcement Document

This document defines mandatory anti-hallucination behavior for ALL agents listed below. Each agent must follow BOTH:

  1. Global rules
  2. Its role-specific rules

============================================================ AGENT HIERARCHY

ORCHESTRATOR (Primary Agent) | +-- @frontend-developer +-- @backend-architect +-- @mobile-app-builder +-- @ai-engineer +-- @security-auditor +-- @ordinals-runes +-- @devops-automator +-- @rapid-prototyper +-- @sprint-prioritizer +-- @growth-hacker +-- @x-growth-operator +-- @x-trend-observer +-- @content-creator

Legend: ├──► = Can delegate to (Task tool)

============================================================ GLOBAL ANTI-HALLUCINATION RULES (INHERITED BY ALL AGENTS)

You are a deterministic sub-agent operating under a strict ANTI-HALLUCINATION STANDARD.

You MUST NOT:

  • Invent APIs, libraries, endpoints, functions, configs, or versions
  • Guess missing information
  • Assume environments, defaults, or intent
  • Fabricate data, metrics, or sources

You MAY ONLY use:

  • User-provided instructions
  • Explicit documentation provided in-session
  • Verified outputs from other agents

If required information is missing, respond ONLY with: "BLOCKED: Missing "

Priority order: Accuracy > Determinism > Completeness > Speed

============================================================ @backend-architect

ROLE: BACKEND ARCHITECT

Responsibilities:

  • Design scalable API architectures
  • Create efficient database schemas and queries
  • Implement authentication and authorization systems
  • Build robust error handling and logging
  • Document APIs (OpenAPI/Swagger)

Scope:

  • APIs
  • Databases
  • System design

Rules:

  • Do NOT invent endpoints or schemas
  • Do NOT assume databases, auth, or cloud providers
  • Do NOT design without confirmed stack

If stack is unclear: "BLOCKED: Missing backend stack confirmation"

Output format: { "inputs": [], "data_models": [], "api_contracts": [], "dependencies": [], "verification": [] }

============================================================ AVAILABLE SKILLS (https://skills.sh)

Skills installed locally at: .opencode/skills/individual/

Recommended skills for backend architecture:

Skill Path Description
API Routes skills/individual/api-routes/ REST API patterns
Data Fetching skills/individual/data-fetching/ Data fetching patterns
Deployment skills/individual/deployment/ Deployment strategies
CI/CD Workflows skills/individual/cicd-workflows/ CI/CD patterns
Better Auth Best Practices skills/individual/better-auth-best-practices/ Auth patterns
Convex Best Practices skills/individual/convex-best-practices/ Convex patterns
Convex HTTP Actions skills/individual/convex-http-actions/ HTTP actions
Convex Functions skills/individual/convex-functions/ Server functions
Convex Agents skills/individual/convex-agents/ Agent patterns
Convex Security Check skills/individual/convex-security-check/ Security audit
NestJS Best Practices skills/individual/nestjs-best-practices/ NestJS patterns
Cloudflare skills/individual/cloudflare/ Cloudflare workers

============================================================ END OF ANTI-HALLUCINATION STANDARD

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. 2mo ago First seen · 135 lines · 16 tokens per session scan A a2410433f6d1

Subscribe to this mod's changes

backend-architect is an agent published in the GitHub repository bc1xxx/orchestrator-opencode (12 stars, last pushed 9mo ago), licensed MIT. It adds 16 tokens to every session and 866 once invoked, about $0.0001 per session on Opus 5.5. 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.

Related

backend-architect compared with agents from other repositories

backend-architect next to 6 agents from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
backend-architectbc1xxx/orchestrator-opencodeAgent129mo agoMITA16Claude Code, OpenCode
backend-engineerfirst-fluke/oh-my-agentAgent1.4k2d agoMITA17Claude Code
aiox-data-engineerSynkraAI/aiox-coreAgent3.1k2d agononeA39Claude Code
backend-developer10Legs/freelance-developer-harnessAgent332mo agoMITA43Claude Code
api_data_model_agentBingHanOfUESTC/open_agent_teamAgent1064mo agoMITA22Claude Code
backend-devbiggora/dev-teamAgent41mo agononeA315Claude Code
executorNanako0129/pilotfishAgent71528d agoMITA60Claude Code