ring:adding-multi-tenancy

A guided process for adding database-per-tenant isolation to a Go service. A multi-tenant service serves multiple organizations while keeping each organization's data separated, here by routing a tenant ID from a login token to the correct database.

In plain words
What is it for?
Use it when adding tenant isolation across configuration, request middleware, repositories, metrics, and tests in a Go service.
Why use it?
It provides a defined sequence for checking the existing service, implementing tenant routing, and reviewing the result so data is not accidentally shared between tenants.

Skill for Claude CodeCodex

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 skills/lerianstudio/ring/adding-multi-tenancy
Any agent
npx skills add LerianStudio/ring --skill adding-multi-tenancy
Clone the repo
git clone --depth 1 https://github.com/LerianStudio/ring

Made for: Claude Code, Codex.

Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,586 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 $0.00095 $0.01586
Opus 5 $0.00048 $0.00793
Sonnet 5 $0.00019 $0.00317
Haiku 4.5 $0.00010 $0.00159

Measured 2d ago against content hash ea76831e7ac3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ring:adding-multi-tenancy 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 2d 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.

dev-team/skills/adding-multi-tenancy/SKILL.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Multi-Tenant Development Cycle

When to use

  • User requests multi-tenant implementation for a Go service
  • User asks to add tenant isolation to an existing service
  • Task mentions "multi-tenant", "tenant isolation", "dispatch layer", "postgres.Manager", "WithPG", "WithMB", "EventListener", "TenantCache", "TenantLoader"

Skip when

  • Service is not a Go project
  • Task does not involve multi-tenancy or tenant isolation
  • Service is a shared infrastructure component operating outside tenant context
  • Task is documentation-only or non-code

You orchestrate. Agents implement. NEVER use Edit/Write/Bash on Go source files. All code changes go through Task(subagent_type="ring:backend-go"). TDD mandatory for all implementation gates (RED → GREEN → REFACTOR).

Multi-Tenant Architecture

Isolation: tenantId from JWT → dispatch layer middleware → database-per-tenant. organization_id is NOT multi-tenant. tenantId from JWT is the ONLY mechanism.

Standards reference: https://raw.githubusercontent.com/LerianStudio/ring/main/dev-team/docs/standards/golang/multi-tenant.md

Sub-package import reference:

Alias Import Path Purpose
client github.com/LerianStudio/lib-commons/v5/commons/dispatch layer/client Tenant Manager HTTP client
tmcore github.com/LerianStudio/lib-commons/v5/commons/dispatch layer/core Context helpers, resolvers
tmmiddleware github.com/LerianStudio/lib-commons/v5/commons/dispatch layer/middleware TenantMiddleware (WithPG/WithMB)
tmpostgres github.com/LerianStudio/lib-commons/v5/commons/dispatch layer/postgres PostgresManager
tmmongo github.com/LerianStudio/lib-commons/v5/commons/dispatch layer/mongo MongoManager
tmrabbitmq github.com/LerianStudio/lib-commons/v5/commons/dispatch layer/rabbitmq RabbitMQ Manager
valkey github.com/LerianStudio/lib-commons/v5/commons/dispatch layer/valkey Redis key prefixing
s3 github.com/LerianStudio/lib-commons/v5/commons/dispatch layer/s3 S3 key prefixing
secretsmanager github.com/LerianStudio/lib-commons/v5/commons/secretsmanager M2M credentials

Read the full file on GitHub · 119 lines

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. 2d ago First seen · 119 lines · 95 tokens per session scan A ea76831e7ac3

Subscribe to this mod's changes

ring:adding-multi-tenancy is a skill published in the GitHub repository LerianStudio/ring (210 stars, last pushed 13d ago), licensed Apache-2.0. It adds 95 tokens to every session and 1,586 once invoked, about $0.0005 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 2026-08-30.

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