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 rules/stratokit/strato-db/jsonmodelgit clone --depth 1 https://github.com/StratoKit/strato-dbWrote 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/rules/stratokit/strato-db/jsonmodel)<a href="https://agentmods.dev/rules/stratokit/strato-db/jsonmodel"><img src="https://agentmods.dev/badge/rules/stratokit/strato-db/jsonmodel.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 5.1 | $0.00875 | $0.00875 |
| Opus 5 | $0.00438 | $0.00438 |
| Sonnet 5 | $0.00175 | $0.00175 |
| Haiku 4.5 | $0.00088 | $0.00088 |
Grade A, and why
JsonModel 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 — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
JsonModel Module (src/JsonModel)
This module provides the JsonModel class, a powerful Object-Relational Mapper (ORM)-like interface for storing and querying JSON-style documents within SQLite tables.
Core Components
JsonModel.js (JsonModelImpl class)
- Purpose: Manages a specific SQLite table, mapping rows to JavaScript objects. It handles schema definition, data serialization/deserialization, CRUD operations, querying, indexing, migrations, and caching.
- Key Features:
- Schema Definition: Defines table structure through a
columnsobject, supporting various data types (TEXT, INTEGER, JSON, etc.), primary keys (idCol), automatic value generation (value), indexing (index), and aliasing. - JSON Handling: Stores primary data in a
jsoncolumn but can extract specific JSON paths (path) into virtual columns for efficient querying and indexing. - CRUD: Provides comprehensive methods:
set(): Inserts or updates (upserts) an object.get(): Retrieves an object by its ID.getAll(): Retrieves multiple objects by IDs.update(): Updates an existing object.remove()/delete(): Deletes an object by ID or the object itself.changeId(): Updates the ID of an object.
- Querying: Offers flexible search capabilities:
search(),searchOne(),searchAll(): Finds objects based on attribute matching (where), sorting (sort), limiting results (limit), and cursor-based pagination.exists(): Checks if an object matching criteria exists.count(): Counts matching objects.- Aggregate functions:
max(),min(),sum(),avg().
- Caching: Integrates
dataloaderfor efficient batching and caching ofgetoperations viagetCached(). - Migrations: Manages database schema evolution through registered migration functions.
- Customization: Allows specifying a custom class (
ItemClass) for instantiated objects. - Utilities: Includes internal helpers for SQL generation, object cloning, cursor encoding/decoding (
jsurl2).
- Schema Definition: Defines table structure through a
- Dependencies:
DB(likely via passeddbinstance),dataloader,lodash,debug,jsurl2, internal helpers.
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 · 70 lines · 875 tokens per session scan A 8d56550e590a
JsonModel is a cursor rule published in the GitHub repository StratoKit/strato-db (14 stars, last pushed 6mo ago), licensed MIT. It adds 875 tokens to every session, about $0.0044 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 2026-09-04.
Other cursor rules, from other repositories
chdb
See CONTRIBUTING.md for the full contributor guide, including the crash-diagnosis rule (always capture the stack trace before changing code on SIGSEGV / SIGABRT / SIGFPE / SIGILL / SIGBUS / SIGSYS).
git-conventions
See CONTRIBUTING.md → "PR & commit conventions" for PR title format, commit messages, and branch naming.
chdb-ds
See AGENTS.md for chdb-ds design and testing principles.
cursorrules
BEFORE making any changes or starting work, ALWAYS.
architect
Global Architect rules for sandraschi's dev environment (Unity and other integrations, FastMCP, React). See mcp-central-docs integrations.
ponytail
Ponytail, lazy senior dev mode. Always pick the simplest solution that works.