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.
npx agentmods add skills/leadmagic/gtm-skills/mcp-setupnpx skills add LeadMagic/gtm-skills --skill mcp-setupgit clone --depth 1 https://github.com/LeadMagic/gtm-skillsWrote 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.
[](https://agentmods.dev/skills/leadmagic/gtm-skills/mcp-setup)<a href="https://agentmods.dev/skills/leadmagic/gtm-skills/mcp-setup"><img src="https://agentmods.dev/badge/skills/leadmagic/gtm-skills/mcp-setup.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00055 | $0.01645 |
| Opus 5 | $0.00028 | $0.00822 |
| Sonnet 5 | $0.00011 | $0.00329 |
| Haiku 4.5 | $0.00006 | $0.00164 |
Grade A, and why
mcp-setup 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 today.
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.
How it starts
The opening of the file, as written. The whole thing — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MCP Setup
Overview
MCP turns AI agents into tool-using operators. The risk is that teams connect every tool, expose write access, and then wonder why the agent behaves unpredictably. Good MCP setup is not "give the agent more tools." It is tool curation, permission design, and auditability.
This skill configures MCP for GTM workflows where agents research accounts, enrich records, inspect CRM, draft messaging, and route tasks without uncontrolled external side effects.
When to Use
Use this skill when the user asks to "set up MCP for sales tools", "connect our CRM to Claude/Jesse", "give my agent enrichment capabilities", "build an MCP server for GTM tools", "configure MCP permissions", "connect LeadMagic MCP", "orchestrate multiple MCP servers", or "make agent tool use safer".
Authoritative Foundations
Model Context Protocol Specification
MCP standardizes how agents discover tools, resources, and prompts. The key design principle is clear tool descriptions and predictable tool inputs/outputs.
Anthropic — Tool Use Design Patterns
Tools should be narrowly described, unambiguous, and paired with verification steps. Agents need clear rules for when to call a tool and when to ask for confirmation.
Least Privilege Access Control
Agents should receive the minimum access needed for the current task. Read-only first, write access only where the business process explicitly requires it.
Audit Logging
Log every tool call: tool name, who triggered it, timestamp, and a short summary of inputs/outputs. Without this, you cannot debug mistaken CRM writes or sequence enrollments.
Prerequisites
- Agent platform that supports MCP
- List of tools to expose
- API credentials stored securely
- Permission model: read, draft, write, send
- Audit log destination
- Human approval policy for write actions
Step-by-Step Process
Phase 1: Inventory Tool Categories
| Category | Example Tools | Default Permission |
|---|---|---|
| Enrichment | email finder, company enrichment | Read / lookup |
| CRM | accounts, contacts, deals | Read-only first |
| Sequencing | campaign creation, enrollment | Draft-only |
| Analytics | dashboards, event data | Read-only |
| Support | Plain MCP (threads, customers, tenants, help center) | Read + draft replies; confirm before send |
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- today Changed e1b52ef6f331
- 5d ago First seen · 175 lines · 55 tokens per session scan A f723a384a286
mcp-setup is a skill published in the GitHub repository LeadMagic/gtm-skills (46 stars, last pushed 2d ago), licensed MIT. It adds 55 tokens to every session and 1,645 once invoked, about $0.0003 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 2026-08-30.
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