capabilities-ownership

A set of project rules for describing database capabilities reported by adapters, which are the components that connect an application to a database. The contract lists required capabilities and records the resulting profile with a profile hash.

In plain words
What is it for?
It is for reviewing or writing contracts and documentation about database connections, supported capabilities, and negotiated adapter profiles.
Why use it?
It prevents documentation and code from treating requirements as if they define what a database adapter supports.

Cursor rule for Codex

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 rules/prisma/prisma-next/capabilities-ownership
Clone the repo
git clone --depth 1 https://github.com/prisma/prisma-next

Made for: Codex.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 127 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00000 $0.00127
Opus 5 $0.00000 $0.00063
Sonnet 5 $0.00000 $0.00025
Haiku 4.5 $0.00000 $0.00013

Measured 2d ago against content hash 7c989e928d6a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

capabilities-ownership 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.

Origin

This is a copy

100% identical to capabilities-ownership — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/rules/capabilities-ownership.mdc · 20 lines

What it actually says

Capability Ownership

Capabilities describe the database environment and are reported by adapters. The contract only declares required capabilities in contract.capabilities and pins the resulting profileHash.

Do

  • Describe capabilities as adapter-reported and negotiated at connect time
  • Frame contract capabilities as requirements, not definitions

Avoid

  • Wording that implies the contract owns or defines capabilities
  • Treating sql.* as a separate “SQL family” capability set rather than shared adapter keys
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 · 20 lines · 0 tokens per session scan A 7c989e928d6a

Subscribe to this mod's changes

capabilities-ownership is a cursor rule published in the GitHub repository prisma/prisma-next (420 stars, last pushed 8d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 127 tokens. A static security scan graded it A with 0 findings. It is 100% identical to capabilities-ownership, differing in 0 lines, and is treated as a copy.