StackSwap — B2B GTM stack intelligence (hosted, Streamable HTTP, 17 tools)

StackSwap MCP

A hosted Model Context Protocol server that gives AI clients access to StackSwap's B2B SaaS GTM stack intelligence — tool catalog, vendor fact sheets, overlap detection, AI-native swap suggestions, stack audits, n-way comparisons, category landscapes, buyer questions, renewal-negotiation playbooks, and a full-text operator knowledge base.

Live endpoint: https://stackswap.ai/api/mcp Docs: stackswap.ai/mcp Status: Free, no API key, stateless. 17 tools — 16 read-only + 1 write (submit_correction, queued for human review).

This repo contains public documentation, JSON schemas, and an example client for the hosted MCP server. The server itself is closed-source — it runs as part of stackswap.ai and wraps the same scan engine and tool catalog that powers the web product.

---

Install

Claude Code

claude mcp add --transport http stackswap https://stackswap.ai/api/mcp

For user-scope (available in every session, not just one project):

claude mcp add --transport http --scope user stackswap https://stackswap.ai/api/mcp

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "stackswap": {
      "url": "https://stackswap.ai/api/mcp",
      "transport": "http"
    }
  }
}

Restart Claude Desktop. A tools indicator appears in the chat compose box.

Cursor / ChatGPT Desktop / Other MCP clients

Add a new HTTP MCP server with URL https://stackswap.ai/api/mcp. No authentication.

---

Tools

Seventeen tools across eight domains. Schemas are in schemas/tools.json (extracted directly from the live tools/list response).

Catalog

Tool	What it does
search_tools	Fuzzy-search ~400 GTM tools by name. Returns each match with monthly cost and a StackSwap partner sign-up link when applicable.
get_tool_details	Full StackSwap profile for a single tool: cost (catalog + per-seat with confidence), AI-readiness score, category, common overlaps, swap-registry status.
get_vendor_fact_sheet	Full vendor fact sheet (GTM Decision Schema v1.0.0): pricing tiers with gotchas, integration depth scores, AI capabilities + customer-data-for-training disclosure.

Stack analysis

Tool	What it does
find_overlaps	Given a stack, return the redundant pairs StackSwap has hand-verified (104-pair overlap registry) with consolidation savings.
suggest_swaps	Per-tool AI-native replacement recommendations (Outreach → Smartlead, ZoomInfo → Apollo) with annual savings and reasoning.
scan_stack	Preview StackScan: tools + team size + industry in, current spend / optimized spend / monthly-annual recoverable / headless gaps out.
recommend_partner	Given a need ("outbound", "CRM", "automation"), return StackSwap's recommended partner(s) with positioning.
recommend_stack	Reference starter stack for an industry vertical with per-tool cost, total spend, AI-readiness and headless-readiness scores.

Compare

Tool	What it does
compare_tools	Head-to-head: cost delta, AI-readiness, headless-readiness (MCP/API callability), overlap status, and a recommended pick with reasoning.
compare_tools_n_way	2–6 tools side-by-side in one markdown matrix — cost, AI-readiness, headless-readiness, overlaps within the set, StackSwap pick.

Content

Tool	What it does
search_content	Full-text search across ~50 first-party operator articles on stack architecture, AI-native swaps, RevOps, and decision frameworks.
get_kb_article	Fetch a knowledge-base article's full body as markdown, with canonical URL, category, and last-modified date.

Categories

Tool	What it does
get_category_landscape	Full map of one GTM category — leaders, runner-ups, skip/replace candidates — with cost, AI-readiness, swap-registry status per tool.

Detect

Tool	What it does
detect_stack_from_text	Infer a GTM stack from freeform text (careers page, job posting, site HTML, RFP, DevTools network tab). Ranked matches with confidence levels.

Decision support

Tool	What it does
get_buyer_questions	10–20 questions to ask a vendor before signing, with "why it matters" and red-flag answers. Vendor-specific gotchas when you pass a vendor.
get_renewal_strategy	Renewal-negotiation playbook per vendor: leverage points, price-anchor alternatives, calibrated discount ask, walkaway script, timing window.

Write

Tool	What it does
submit_correction	Submit a catalog correction (pricing, features, gotchas, scores). Queued for admin review — never propagates to user-facing surfaces unreviewed.

---

Example usage

Once installed, ask any of the following in your AI client and it will route to the right tool:

Operator question	Tool that fires
"Find me a cold-email tool"	recommend_partner
"What does Smartlead cost?"	get_tool_details
"Smartlead vs Apollo for outbound?"	compare_tools
"Compare Smartlead, Instantly, Apollo, and Lemlist"	compare_tools_n_way
"Map the whole sales-engagement category"	get_category_landscape
"What should I ask Apollo before signing?"	get_buyer_questions
"My Salesforce renewal is in 60 days — what's my leverage?"	get_renewal_strategy
"What stack does this company run?" (paste a careers page)	detect_stack_from_text
"What overlaps if I'm on HubSpot + Salesforce + Outreach?"	find_overlaps
"Audit my stack: HubSpot, Salesforce, Outreach, ZoomInfo, Gong"	scan_stack
"Find StackSwap's article on data ethics in outbound"	search_content

Tool descriptions are model-readable, so you don't need to know the tool names — the model picks based on the question.

---

Example client

A minimal TypeScript example that connects, lists tools, and runs find_overlaps is in examples/client.ts.

npx tsx examples/client.ts

The protocol is plain JSON-RPC 2.0 over HTTP — any language with a JSON parser and an HTTP client can call it.

---

Endpoint details

JSON-RPC URL	POST https://stackswap.ai/api/mcp
Server descriptor	GET https://stackswap.ai/api/mcp (returns name, version, tool list)
Protocol versions	2025-06-18, 2025-03-26, 2024-11-05
Transport	Streamable HTTP, stateless
Auth	None
Rate limit	None (reasonable use)
CORS	*

---

Why hosted, not stdio

StackSwap's MCP server runs inside the existing stackswap.ai Next.js application as a single route handler. Hosting it ourselves means:

• No install friction — one claude mcp add line, no npm/pip dependency
• Always current — the underlying tool catalog, overlap registry, vendor fact sheets, and swap data update as the StackSwap product evolves
• Zero local compute — the scan engine runs server-side; clients just send JSON-RPC

The trade-off: it requires an internet connection, and we (StackSwap) see request volume and tool-call patterns. We don't store conversation data or user identifiers — the endpoint is stateless.

---

Requests, issues, feedback

Open an issue if you want a tool added, a behavior changed, or you've hit a bug. The MCP surface is shaped by what operators actually ask about.

Contact: [email protected]

---

License

MIT — see LICENSE.

This license covers the public documentation, JSON schemas, and example clients in this repository. It does not cover the closed-source server implementation that runs at stackswap.ai/api/mcp.