uk-property-mcp: Skill for Claude Code

.agents/skills/block-buy/SKILL.md

block-buy is a skill for Claude Code, Codex from paulieb89/uk-property-mcp. It costs 122 tokens per session (1,614 once invoked), scanned A, original, MIT.

A research skill that looks for buildings where several flats were sold during a chosen period. This pattern can indicate a developer selling units, investors leaving, or a possible bulk purchase.

In plain words
What is it for?
Finding possible block-buy opportunities, developer sell-downs, investor exits, and buildings with multiple recent flat sales in a specified area.
Why use it?
It helps replace a manual review of many property transactions with a focused search for multi-unit activity.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is paulieb89/uk-property-mcp's own configuration. It tells Claude Code and Codex how to work on uk-property-mcp 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 uk-property-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to paulieb89/uk-property-mcp. 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/uk-property-mcp/main/.agents/skills/block-buy/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/paulieb89/uk-property-mcp

Made for: Claude Code, Codex.

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.

agentmods badge for block-buy

README.md
[![agentmods](https://agentmods.dev/badge/skills/paulieb89/uk-property-mcp/block-buy/github.svg)](https://agentmods.dev/skills/paulieb89/uk-property-mcp/block-buy)
Your own site
<a href="https://agentmods.dev/skills/paulieb89/uk-property-mcp/block-buy"><img src="https://agentmods.dev/badge/skills/paulieb89/uk-property-mcp/block-buy/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.

agentmods 80×15 button for block-buy

Your own site · 80×15
<a href="https://agentmods.dev/skills/paulieb89/uk-property-mcp/block-buy"><img src="https://agentmods.dev/badge/skills/paulieb89/uk-property-mcp/block-buy.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 122 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,614 The whole file, excluding the scripts and references it only reads on demand.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00122 $0.01614
Opus 5 $0.00061 $0.00807
Sonnet 5 $0.00024 $0.00323
Haiku 4.5 $0.00012 $0.00161

Measured 12d ago against content hash 94824a85925a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

block-buy 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 12d 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.

.agents/skills/block-buy/SKILL.md · 153 lines

How it starts

The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Block-Buy Opportunity Analyser

You identify buildings where multiple flats have traded in a given period — a signal of developer selldowns, investor exits, or bulk-buy opportunities. This is specialist investor research: the patterns matter as much as the raw numbers.

When to Use This Skill

  • "Is there a block buy opportunity near [postcode]?"
  • "Has a developer been selling off flats in [area]?"
  • "Find buildings where multiple units have changed hands"
  • "I want to buy multiple flats in the same building — what's active?"
  • "Is there investor exit activity in [postcode]?"

Not this skill: If the user wants to analyse a single property or area for rental yield, use property-report or property-search.

Before calling any tools, confirm:

  1. Postcode — the area to scan. If the user gives a building name or address, extract the postcode.
  2. Timeframe — how far back to look (default 24 months). A shorter window (6–12 months) catches active selldowns; a longer window (36–48 months) reveals slower investor exits.
  3. Search scope — should you look at just this postcode, the sector, or the wider district? Sector is the default and usually right. Postcode-level is best for a specific building; district-level for broad area scouting.
  4. Minimum transactions — how many sales in a building to qualify (default 2). Lower this to 1 only if the user wants to see all buildings with any recent activity; keep at 2+ for genuine block signals.

Step 2: Run property_blocks

Call property_blocks with:

  • postcode — the area
  • months — lookback period
  • min_transactions — 2 (default) or as clarified
  • search_level"sector" (default), "postcode", or "district"
  • limit — 50 (default) is fine for most searches; reduce if the output is too broad
  • property_type"F" (flats, the default) for block-buy research; pass None if the user wants all property types

The tool groups Land Registry transactions by building name and returns blocks sorted by transaction count.

Read the full file on GitHub · 153 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. 12d ago First seen · 153 lines · 122 tokens per session scan A 94824a85925a

Subscribe to this mod's changes

block-buy is a skill published in the GitHub repository paulieb89/uk-property-mcp (2 stars, last pushed 1mo ago), licensed MIT. It adds 122 tokens to every session and 1,614 once invoked, about $0.0006 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 2026-08-31.

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