What is dbcrust CLAUDE.md?

A project guide for Claude Code, an AI coding tool, describing how to build, test, package, and understand the DBCrust codebase. DBCrust is a database client that works with several database systems and file formats.

Building and testing DBCrust, checking its Rust code, working on its Python bindings, and building its Tauri desktop interface.

It gives the coding agent the project’s commands, technologies, and module structure in one place. This helps it choose the right commands and files when working on the project.

How clement-tourriere/dbcrust configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to clement-tourriere/dbcrust. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/clement-tourriere/dbcrust/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/clement-tourriere/dbcrust

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/clement-tourriere/dbcrust/claude-md/github.svg)](https://agentmods.dev/instructions/clement-tourriere/dbcrust/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/clement-tourriere/dbcrust/claude-md"><img src="https://agentmods.dev/badge/instructions/clement-tourriere/dbcrust/claude-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/clement-tourriere/dbcrust/claude-md"><img src="https://agentmods.dev/badge/instructions/clement-tourriere/dbcrust/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 11,345 This file is loaded in full into every session.

When invoked 11,345 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.11345	$0.11345
Opus 5.5	$0.04538	$0.04538
Sonnet 5.5	$0.02269	$0.02269
Haiku 4.5	$0.01134	$0.01134

Measured 18d ago against content hash bef1c20b3a8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

dbcrust CLAUDE.md 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 18d 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.

CLAUDE.md · 232 lines

How it starts

The opening of the file, as written. The whole thing — 232 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

DBCrust — high-performance multi-engine interactive client in Rust with Python bindings. Supports PostgreSQL, MySQL, SQLite, MongoDB, ClickHouse, Elasticsearch, White Dragon, Redis/Valkey, SQL Server/Azure SQL, Amazon Redshift, libSQL/Turso, InfluxDB (v1 InfluxQL, v2 Flux, v3 SQL), Amazon S3/R2/MinIO, DynamoDB and CloudWatch Logs (opt-in AWS connectors), DuckDB/DuckLake (opt-in duckdb feature, embedded C++ engine), and file formats (Parquet, CSV, JSON) via Apache DataFusion.

Build Commands

mise.toml requires mise 2026.8.16+ and routes Cargo through the pinned Mr Boxington build cache. Run mise install once; use mise run tasks (or an activated mise shell) so Cargo is wrapped. Diagnose cache setup with mbx doctor.

mise install
mise run build:dev        # dev build
mise run build            # release build
mise run build:slim       # release build of the slim `standard` preset (PostgreSQL, MySQL, SQLite)
mise run check:features   # cargo check of zero-engine, standard and each feature alone
mise run install          # install dbcrust + dbc into ~/.cargo/bin
mise run test             # run tests
cargo test -- --nocapture # tests with output
cargo run -- postgres://localhost/test  # run CLI directly

# Python bindings
mise run py:dev           # maturin dev build
mise run py:build         # wheel

# Desktop app (GPUI Kit, pure Rust) — see gui/ARCHITECTURE.md
mise run gui:dev          # run it
mise run gui:test         # backend tests (dbcrust-gui-core, no GPUI)
mise run gui:lint         # clippy on both GUI crates (--no-deps)
mise run gui:screenshots  # regenerate docs/README screenshots headlessly

# Build cache — Mr Boxington (mbx), the `[wrappers.cargo]` entry in mise.toml
mise run cache:stats      # savings + disk use
mise run cache:gc         # reclaim disk space (`-- --dry-run` to preview)

Run Cargo through mise (mise run … or mise exec -- cargo …) so builds hit the shared mbx cache; calling ~/.cargo/bin/cargo directly bypasses it. mbx turns target/ into a link to a managed directory with a disk budget.
No mise installed? ./bin/mise (committed wrapper, pinned mise version) works for every command above; regenerate it with mise generate install-script --write --windows.

Read the full file on GitHub · 232 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.

18d ago Changed · -2 lines · +562 tokens per session bef1c20b3a8d
20d ago Changed · +58 lines · +8,077 tokens per session 2d2ac5fef48c
26d ago Changed · +13 lines · +370 tokens per session 097f27aa6852
1mo ago Changed · +11 lines · +403 tokens per session b9590e726504
2mo ago First seen · 152 lines · 1,933 tokens per session scan A 6a440a7288aa

Subscribe to this mod's changes

dbcrust CLAUDE.md is an instructions file published in the GitHub repository clement-tourriere/dbcrust (92 stars, last pushed 8d ago), licensed MIT. It adds 11,345 tokens to every session, about $0.0454 per session on Opus 5.5. 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 2026-08-30.

Databases ai cli clickhouse csv datafusion

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dbcrust: Instructions file for Claude Code