account-expansion

account-expansion is a skill for Claude Code from sorrek/mcp. It costs 81 tokens per session (915 once invoked), scanned A, original, MIT.

A workflow for finding sales prospects connected to an existing customer through ownership relationships. These connections include subsidiaries, sister companies, and other companies backed by the same private-equity firm.

In plain words
What is it for?
Use it to confirm a customer’s ownership, find its corporate family and shared private-equity portfolio, and rank possible expansion targets.
Why use it?
It turns one customer relationship into a structured list of related prospects with a reason they may be easier to approach than unrelated companies.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the magellan-data plugin — 3 skills, 2 MCP servers shipped together

Good fit Use it to confirm a customer’s ownership, find its corporate family and shared private-equity portfolio, and rank possible expansion targets.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sorrek/mcp/account-expansion
Install

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.

Any agent
npx skills add sorrek/mcp --skill account-expansion
Clone the repo
git clone --depth 1 https://github.com/sorrek/mcp

Made for: Claude Code.

Or install magellan-data, the plugin that ships this one along with the rest of its 3 skills, 2 MCP servers.

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 account-expansion

README.md
[![agentmods](https://agentmods.dev/badge/skills/sorrek/mcp/account-expansion/github.svg)](https://agentmods.dev/skills/sorrek/mcp/account-expansion)
Your own site
<a href="https://agentmods.dev/skills/sorrek/mcp/account-expansion"><img src="https://agentmods.dev/badge/skills/sorrek/mcp/account-expansion/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 account-expansion

Your own site · 80×15
<a href="https://agentmods.dev/skills/sorrek/mcp/account-expansion"><img src="https://agentmods.dev/badge/skills/sorrek/mcp/account-expansion.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 915 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 $0.00081 $0.00915
Opus 5 $0.00041 $0.00458
Sonnet 5 $0.00016 $0.00183
Haiku 4.5 $0.00008 $0.00092

Measured 6d ago against content hash 0836e5f427c7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

account-expansion 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 6d 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.

skills/account-expansion/SKILL.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Account Expansion

Turn one closed-won account into a ranked list of warm targets by walking its ownership graph.

The logic

A company you already sell to is connected to other companies two ways:

  1. Corporate family — subsidiaries and sister companies under the same parent. The parent often has shared procurement, a shared MSA, and internal referral paths.
  2. PE portfolio — companies held by the same private equity firm. PE firms actively push vendor standardization across their portfolio, and a reference from one portfolio company carries real weight with the others.

Both are warmer than cold outbound because there's a structural reason for the introduction to happen.

Steps

  1. Establish the anchor. Confirm which account is the anchor and get its domain. If the user gave you a company name, ask for the domain or website rather than guessing.

  2. Check the balance. Call check_credits first. It's free, and it prevents starting a pipeline you can't finish.

  3. Resolve ownership. submit_batch([anchor_domain]), then process_batch(batch_id, ["pe_ownership", "parent_companies"]). Poll get_run_status until both runs are completed. This costs at most 140 credits at download (70 per run where something was found; a run that finds no parent or no PE owner is free) — read the exact price off each completed run, state it, and confirm before downloading.

  4. Branch on what you find:

    • PE-backed → take the firm, submit_batch([firm_domain])process_batch(batch_id, ["pe_portfolios"]). This is priced per record, so read the price off the completed run and surface it before downloading.
    • Has a corporate parent → take the parent, then process_batch(batch_id, ["corporate_families"]). Also per record.
    • Neither → say so plainly. A standalone independent company has no ownership graph to walk, and this play doesn't apply. Don't pad the answer.
  5. Rank the results. Don't hand back raw rows. Order them by:

    • Similarity to the anchor — same industry and rough size band first
    • deal_type — recent buyouts and add-ons signal active integration and budget movement; legacy holdings are colder
    • Whether they're already in the user's CRM — if the user gave you an account list, split the output into already covered and net new

Read the full file on GitHub · 82 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. 6d ago Changed · +2 lines 0836e5f427c7
  2. 10d ago First seen · 80 lines · 81 tokens per session scan A 7d32224e4dc2

Subscribe to this mod's changes

account-expansion is a skill published in the GitHub repository sorrek/mcp (1 stars, last pushed 10d ago), licensed MIT. It adds 81 tokens to every session and 915 once invoked, about $0.0004 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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