readwise-vector-db: Instructions file for Claude Code

CLAUDE.md

readwise-vector-db CLAUDE.md is an instructions file for Claude Code from leonardsellem/readwise-vector-db. It costs 2,018 tokens per session, scanned A, original, MIT.

Project instructions for a service that syncs Readwise reading data into a searchable vector database. Readwise is a service for saving and reviewing highlights; a vector database finds text by meaning as well as exact words.

In plain words
What is it for?
It is for full or incremental Readwise syncs, running the API, managing the PostgreSQL database, applying migrations, and measuring test coverage.
Why use it?
It gives developers a repeatable process for installing, running, syncing, migrating, and testing the service.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is leonardsellem/readwise-vector-db's own configuration. It tells Claude Code how to work on readwise-vector-db itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything readwise-vector-db configures →

Reuse

Borrowing it

Nothing to install: this file belongs to leonardsellem/readwise-vector-db. 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/leonardsellem/readwise-vector-db/master/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/leonardsellem/readwise-vector-db

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.

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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.

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Per session 2,018 This file is loaded in full into every session.
When invoked 2,018 The same file — it is already loaded in full.
Security scan A 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.02018 $0.02018
Opus 5.5 $0.00807 $0.00807
Sonnet 5.5 $0.00404 $0.00404
Haiku 4.5 $0.00202 $0.00202

Measured 2mo ago against content hash b82cb62fae88, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

readwise-vector-db CLAUDE.md scanned grade A with 1 finding 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 2mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -N -H "Accept: text/event-stream" "http://127.0.0.1:8000/mcp/stream?q=test&k=5"
CLAUDE.md · 249 lines

How it starts

The opening of the file, as written. The whole thing — 249 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Essential Commands

Development Workflow

# Setup and installation
poetry install --with dev                        # Install all dependencies
poetry run pre-commit install                    # Setup code quality hooks

# Core development commands
poetry run uvicorn readwise_vector_db.api:app --reload  # Run dev server (localhost:8000)
docker compose up -d db                          # Start PostgreSQL with pgvector
docker compose up -d api                         # Start API container

# CLI operations
poetry run rwv sync --backfill                   # Initial full sync from Readwise
poetry run rwv sync --since $(date -Idate -d 'yesterday')  # Incremental sync

# Database management
poetry run alembic upgrade head                  # Run migrations
make migrate-supabase                            # Migrate Supabase database

Testing and Quality

# Testing
poetry run pytest                               # Run test suite
make cov                                        # Run tests with targeted coverage analysis
make perf                                       # Performance testing (P95 < 500ms requirement)

# Code quality
poetry run black .                              # Format code
poetry run isort .                              # Sort imports
poetry run ruff check .                         # Lint code
poetry run mypy .                               # Type checking

Deployment

# Local Docker deployment
docker compose up -d                            # Full stack deployment

# Vercel deployment
vercel --prod                                   # Deploy to production
vercel env add SUPABASE_DB_URL                  # Configure environment variables

Architecture Overview

Multi-Backend System

This project supports dual deployment patterns:

  • Local: Docker + PostgreSQL with pgvector
  • Cloud: Vercel serverless + Supabase managed database

Read the full file on GitHub · 249 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.

  1. 2mo ago First seen · 249 lines · 2,018 tokens per session scan A b82cb62fae88

Subscribe to this mod's changes

readwise-vector-db CLAUDE.md is an instructions file published in the GitHub repository leonardsellem/readwise-vector-db (24 stars, last pushed 1y ago), licensed MIT. It adds 2,018 tokens to every session, about $0.0081 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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