What is property-shared CLAUDE.md?

Repository guidance for Property Shared, a Python service and library for UK property data, calculations, listings, planning, and company searches.

Use it when developing or operating the property service, including transaction analysis, energy certificates, planning searches, or stamp-duty calculations.

It documents the main data sources, required credentials, and commands for installing, running, and using the API or command-line tools.

How paulieb89/property-shared configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to paulieb89/property-shared. 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/paulieb89/property-shared/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/paulieb89/property-shared

Made for: Claude Code.

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README.md

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<a href="https://agentmods.dev/instructions/paulieb89/property-shared/claude-md"><img src="https://agentmods.dev/badge/instructions/paulieb89/property-shared/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 3,258 This file is loaded in full into every session.

When invoked 3,258 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	$0.03258	$0.03258
Opus 5.5	$0.01303	$0.01303
Sonnet 5.5	$0.00652	$0.00652
Haiku 4.5	$0.00326	$0.00326

Measured 2mo ago against content hash edfa6ca74dc7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

property-shared 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 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.

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 · 218 lines

How it starts

The opening of the file, as written. The whole thing — 218 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

@GUIDELINES.md

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

Project Overview

Property Shared is a FastAPI service + pure-Python core library for UK property data. It integrates:

PPD (Price Paid Data) - Land Registry transactions via SPARQL/Linked Data API
EPC - Energy Performance Certificates (requires API credentials)
Rightmove - Property listings via scraping with built-in politeness
Planning - UK council planning applications via vision-guided browser automation (99 verified councils)
Stamp Duty - SDLT calculator with April 2025 bands, additional property/FTB/non-resident surcharges
Block Analyzer - Groups PPD transactions by building to find bulk-buy opportunities
Companies House - Company search and lookup via free API (requires API key)

Commands

# Install dependencies (dev tooling installs by default via [dependency-groups])
uv sync

# Run API server
uv run --extra api --env-file .env property-api              # production mode
uv run --extra api --env-file .env uvicorn app.main:app --reload  # dev mode with reload

# Run CLI (core mode - no server needed)
uv run --extra cli property-cli meta
uv run --extra cli property-cli ppd comps "SW1A 1AA" --months 24
uv run --extra cli property-cli rightmove search-url "SW1A 1AA"
uv run --extra cli property-cli calc stamp-duty 300000
uv run --extra cli property-cli ppd blocks "B1 1AA"
uv run --extra cli property-cli companies search "Tesco"
uv run --extra cli property-cli analysis yield "NG1 1AA"
uv run --extra cli property-cli analysis rental "NG1 1AA"

# CLI targeting running API (add --api-url)
uv run --extra cli property-cli ppd comps "SW1A 1AA" --api-url http://localhost:8000

# Full validation (lockfile check, pre-commit, all extras, full suite) —
# run this, don't hand-assemble the extras yourself; it's the same
# entrypoint CI and the release gate use.
./scripts/validate.sh                        # unit tests (mocked)
RUN_LIVE_TESTS=1 ./scripts/validate.sh        # + live network tests

# Single test
uv run --extra api --extra apps --extra cli pytest tests/test_ppd_service_live.py -v

Read the full file on GitHub · 218 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.

2mo ago Changed · +6 lines · +82 tokens per session edfa6ca74dc7
2mo ago Changed · +9 lines · +82 tokens per session 3427c6e8d402
2mo ago First seen · 203 lines · 3,094 tokens per session scan A ec4a20979a6e

Subscribe to this mod's changes

property-shared CLAUDE.md is an instructions file published in the GitHub repository paulieb89/property-shared (18 stars, last pushed 2mo ago), licensed MIT. It adds 3,258 tokens to every session, about $0.0130 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.

Backend and APIs Languages Python ai-skills claude epc land-registry mcp mcp-server

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property-shared: Instructions file for Claude Code