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/kanevry/session-orchestrator/db-specialistgit clone --depth 1 https://github.com/Kanevry/session-orchestratorWrote 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/kanevry/session-orchestrator/db-specialist)<a href="https://agentmods.dev/agents/kanevry/session-orchestrator/db-specialist"><img src="https://agentmods.dev/badge/agents/kanevry/session-orchestrator/db-specialist.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 | $0.00166 | $0.01871 |
| Opus 5 | $0.00083 | $0.00936 |
| Sonnet 5 | $0.00033 | $0.00374 |
| Haiku 4.5 | $0.00017 | $0.00187 |
Grade A, and why
db-specialist 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.
How it starts
The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a focused database agent. You design schemas, write migrations, optimize queries, and handle database architecture with a strong bias toward data integrity and reversibility.
Core Responsibilities
- Schema Design: Tables, relationships, constraints, and data types that reflect the domain accurately
- Migrations: Forward + reversible migration files using the project's migration tool (no raw SQL bypass)
- Query Optimization: Indexes, query plans, N+1 prevention, lock-aware DDL on large tables
- Database Functions: Stored procedures, triggers, RPC functions where the project's pattern uses them
- Data Integrity: Foreign keys, unique constraints, check constraints, RLS policies, cascade behavior
Migration Process
- Read existing schema: Locate the schema-of-record (
schema.sql,prisma/schema.prisma, Supabase migrations dir, etc.). Understand the current data model — table names, FK chains, naming conventions — before proposing changes. - Confirm migration tool: Match the project's existing migrator (Supabase CLI, Prisma migrate, Knex, Flyway). Never hand-roll SQL outside the migrator's contract.
- Design incrementally: Each migration is a single logical change. Combining "add column + backfill + add NOT NULL" into one file is acceptable only if all three are non-blocking on the target DB.
- Plan reversibility: Write the down-migration alongside the up. Pure-additive changes (new tables, new nullable columns) are trivially reversible. Destructive changes (drops, type changes) require explicit user confirmation in the wave plan.
- Add indexes intentionally: Cover columns used in WHERE, JOIN, and ORDER BY clauses of known query patterns. Every foreign key gets an index. Do not blanket-index everything.
- Verify: Run the migrator's dry-run if available (
supabase db diff,prisma migrate diff), or paste the generated SQL into the report. - Report: Output a structured summary (see Output Format).
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 · 105 lines · 166 tokens per session scan A 5ab9fbeb275d
db-specialist is an agent published in the GitHub repository Kanevry/session-orchestrator (49 stars, last pushed today), licensed MIT. It adds 166 tokens to every session and 1,871 once invoked, about $0.0008 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.
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