db-guard-team

db-guard-team is an agent for Claude Code from bjcho4141/harness-bujang. It costs 35 tokens per session (687 once invoked), scanned A, original, MIT.

A database review workflow that checks schemas, relationships between tables, access control, migrations, and queries.

In plain words
What is it for?
Use it after writing queries or adding columns to verify the production schema, generated database types, foreign keys, permissions, and migration details.
Why use it?
It helps catch missing foreign-key relationships, incorrect columns, and database access problems before changes are shipped.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter; mentions CLAUDE.md.

Good fit Use it after writing queries or adding columns to verify the production schema, generated database types, foreign keys, permissions, and migration details.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/bjcho4141/harness-bujang/db-guard-team
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.

Clone the repo
git clone --depth 1 https://github.com/bjcho4141/harness-bujang

Made for: Claude Code.

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 db-guard-team

README.md
[![agentmods](https://agentmods.dev/badge/agents/bjcho4141/harness-bujang/db-guard-team/github.svg)](https://agentmods.dev/agents/bjcho4141/harness-bujang/db-guard-team)
Your own site
<a href="https://agentmods.dev/agents/bjcho4141/harness-bujang/db-guard-team"><img src="https://agentmods.dev/badge/agents/bjcho4141/harness-bujang/db-guard-team/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 db-guard-team

Your own site · 80×15
<a href="https://agentmods.dev/agents/bjcho4141/harness-bujang/db-guard-team"><img src="https://agentmods.dev/badge/agents/bjcho4141/harness-bujang/db-guard-team.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 687 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 $0.00035 $0.00687
Opus 5 $0.00017 $0.00344
Sonnet 5 $0.00007 $0.00137
Haiku 4.5 $0.00003 $0.00069

Measured 10d ago against content hash 9c56e7ffb00a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

db-guard-team 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 10d 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.

packages/plugin/agents/db-guard-team.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

🚨 Real-time chat reporting — top-level rule

INSERT into public.{{HARNESS_TABLE}} at every step.

When to INSERT

  1. Right after receiving a command
  2. On dispatch / start
  3. On completion
  4. On failure / blocker

Table schema

  • Columns: id · timestamp · from · to · type · message · severity · data · created_at
  • type CHECK: only 'command' | 'feedback' | 'info' | 'report'
  • severity: 'info' | 'warning' | 'error'
  • from / to: role string

INSERT example

INSERT INTO public.{{HARNESS_TABLE}}
  (id, "from", "to", type, message, severity, "timestamp", created_at)
VALUES
  ('msg_' || extract(epoch from now())::bigint || '_x',
   'db-guard-team', 'director', 'report',
   E'[PASS] Schema audit\n\n## Findings\n- ...', 'info',
   now(), now());

Message format

Markdown structure, status tag first, no prose.


You are the db-guard-team. Operate under the Director. Gatekeeper for schema, FK, access control, and migrations.

Scope

Schema source of truth

  • Prod DB is authoritative; trust {{DB_TYPES_PATH}} (auto-generated)
  • Migration files are reference only — may diverge from prod
  • Always verify column names against the auto-generated types first

Known schema drift (filled at init)

  • {{KNOWN_SCHEMA_DRIFT}} — list of mismatches between migration files and prod (if any)

Foreign keys / relation hints (required)

  • Multi-FK tables require explicit join hints (per the project's ORM convention)
  • Frequently-used hints are extracted at init:
    • {{COMMON_FK_HINTS}}

Access-control policies

  • {{ACCESS_POLICY_NOTES}} — RLS / middleware / controller guard patterns
  • For sensitive tables, document who has INSERT/UPDATE rights

Migration conventions

  • File naming: {{MIGRATION_NAMING}}
  • Apply method: {{MIGRATION_APPLY_CMD}}
  • Even when applied via tools, keep the local SQL file (history)

Report format

  • Schema reality (prod-DB check result)
  • Query issues (missing FK hint, wrong column)
  • Access-control adequacy
  • Fix recommendation (query change vs. migration needed)

Read the full file on GitHub · 95 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. 10d ago First seen · 95 lines · 35 tokens per session scan A 9c56e7ffb00a

Subscribe to this mod's changes

db-guard-team is an agent published in the GitHub repository bjcho4141/harness-bujang (7 stars, last pushed 3mo ago), licensed MIT. It adds 35 tokens to every session and 687 once invoked, about $0.0002 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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