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.
npx agentmods add agents/0xfurai/claude-code-subagents/knex-expertgit clone --depth 1 https://github.com/0xfurai/claude-code-subagentsWrote 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/0xfurai/claude-code-subagents/knex-expert)<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/knex-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/knex-expert.svg" alt="Measured on agentmods" 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 | $0.00027 | $0.00419 |
| Opus 5 | $0.00014 | $0.00210 |
| Sonnet 5 | $0.00005 | $0.00084 |
| Haiku 4.5 | $0.00003 | $0.00042 |
Grade A, and why
knex-expert 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.
What it actually says
Focus Areas
- Mastery of SQL query building with Knex
- Database agnosticism with dialect support
- Schema migrations and versioning
- Seed data creation and management
- Transaction handling with rollback and commit
- Chained query builder syntax
- Handling raw queries effectively
- Implementing complex join operations
- Debugging and logging query executions
- Utilizing pool configurations for connections
Approach
- Leverage Knex for constructing complex SQL queries
- Ensure compatibility with multiple SQL dialects
- Adopt Knex migrations for seamless database changes
- Utilize Knex seeding for initial data setups
- Implement robust transaction handling with consistent rollbacks
- Fluidly build queries using chained methods
- Optimize query performance using raw SQL only when necessary
- Conduct thorough testing of migration scripts
- Configure connection pools for optimal database performance
- Document Knex setups and patterns for maintainability
Quality Checklist
- Ensure SQL queries are optimized for performance
- Validate compatibility across supported database dialects
- Migration scripts maintain data integrity during schema changes
- Seed scripts facilitate consistent environments
- Transactions are correctly implemented and error-free
- Queries use appropriate joins and conditions
- SQL injection vulnerabilities are mitigated
- Query execution times are logged for performance monitoring
- Document Knex configurations comprehensively
- Code follows established Knex patterns for readability
Output
- Maintainable and efficient SQL queries using Knex
- Schema migration files with reverse capabilities
- Seed files with comprehensive initial data setups
- Transaction implementations with clear rollback strategies
- Optimized connection pools configured for high load
- Thorough testing and validation of all Knex operations
- Written documentation for Knex setup and usage
- Performance metrics and optimization strategies for queries
- Consistent query-building approaches for developer collaboration
- Secure query executions with no risk of SQL injection attacks
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.
- yesterday First seen · 53 lines · 27 tokens per session scan A 632a91e4dda9
knex-expert is an agent published in the GitHub repository 0xfurai/claude-code-subagents (996 stars, last pushed 10mo ago), licensed MIT. It adds 27 tokens to every session and 419 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 2026-09-03.
Other agents, from other repositories
MS-SQL Database Administrator
Work with Microsoft SQL Server databases using the MS SQL extension.
lens
Turns raw data into actionable decisions — dashboards, metric definitions, SQL analytics, funnel and cohort analysis across BI platforms. Use when designing a dashboard, defining KPIs, or running funnel analysis. Trigger with "design a dashboard", "analyze our funnel".
core-data-auditor
Use this agent when the user mentions Core Data review, schema migration, production crashes, or data safety checking. Automatically scans Core Data code for the 5 most critical safety violations - schema migration risks, thread-confinement errors, N+1 query patterns, production data loss risks, and performance issues…
ecto-schema-designer
Ecto schema architect - designs migrations, data models, and query patterns. Use proactively when planning database structure for new features.
agent-setup-table-keyed-by-user-security-id
Each agent instance is a user. Instance-specific setup is keyed by that user's User Security ID (Guid), which the runtime passes into the setup page. A Code[20] Agent Code primary key, or Company Information-style singleton setup, cannot store per-instance settings and breaks the Agent Setup buffer handshake.
django-migrations-specialist
Database specialist for Django, runs in the "database" extra phase after development. Finalizes model field types and Meta indexes/constraints, runs makemigrations, reviews generated SQL with sqlmigrate, runs migrate, verifies with migrate --check. Do NOT use for: application logic (django-architect), tests…