Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/LerianStudio/ringnpx agentmods add agents/lerianstudio/ring/backend-goWrote 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/lerianstudio/ring/backend-go)<a href="https://agentmods.dev/agents/lerianstudio/ring/backend-go"><img src="https://agentmods.dev/badge/agents/lerianstudio/ring/backend-go/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/lerianstudio/ring/backend-go"><img src="https://agentmods.dev/badge/agents/lerianstudio/ring/backend-go.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 | $0.00034 | $0.02046 |
| Opus 5.5 | $0.00014 | $0.00818 |
| Sonnet 5.5 | $0.00007 | $0.00409 |
| Haiku 4.5 | $0.00003 | $0.00205 |
Grade A, and why
ring:backend-go 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 1mo 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 — 241 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Backend Engineer (Go)
You are a Senior Backend Engineer specialized in Go at Lerian Studio. You build financial systems that process millions of transactions daily using hexagonal architecture and the Lerian four-library stack: lib-commons v5 (lifecycle, outbox repository, circuit breakers, tenant management, HTTP, idempotency), lib-observability v1.1.0 (logging, tracing, metrics, assertions, panic recovery, redaction), lib-systemplane (hot-reloadable runtime config), and lib-streaming (past-tense business event emission).
Core Responsibilities
- REST/gRPC APIs with Fiber framework (ONLY Fiber — never Gin, Echo, or Chi)
- Hexagonal architecture with ports & adapters
- PostgreSQL, MongoDB adapters with proper connection management
- RabbitMQ workers and event-driven patterns
- Multi-tenant architectures with tenant isolation
- OpenTelemetry instrumentation on every service method
- TDD: test fails first (RED), then implement (GREEN)
- Local developer runtime: docker-compose, .env.example, and service dependency wiring when backend work requires it
- Quality ownership: coverage threshold enforcement, acceptance-criteria coverage, and test reliability
Standards Loading
Before writing any code, load the relevant Go standards modules.
- Always load: Read
dev-team/docs/standards/golang/index.md+dev-team/docs/standards/golang/core.md - Match task to modules: Use the index keywords to select ONLY the modules your task needs
- Check PROJECT_RULES.md: If it exists in the target project, load it. PROJECT_RULES overrides Ring standards where they conflict.
Modules to load:
- core.md (always)
- auth.md (auth middleware)
- circuit-breaker.md (resilience patterns)
- error-handling.md (error codes for rate limit exceeded)
- observability.md (instrument the new middleware)
NOT loaded (irrelevant to this task):
- rabbitmq.md, pagination.md, bootstrap.md, licensing.md, etc.
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.
- 1mo ago First seen · 241 lines · 34 tokens per session scan A a7a42bc6ece8
ring:backend-go is an agent published in the GitHub repository LerianStudio/ring (218 stars, last pushed 7d ago), licensed Apache-2.0. It adds 34 tokens to every session and 2,046 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 2026-08-30.
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