com.wafergraph/wafergraph-mcp MCP Server

This is a read-only Model Context Protocol (MCP) server for wafergraph.com’s semiconductor and AI supply-chain data. It is configured with 9 tools and requires no authentication. The server is intended to expose supply-chain information through MCP tool interfaces.

🛠️ Key Features

Read-only access
Semiconductors and AI supply-chain data
9 available tools
No authentication required

🚀 Use Cases

Querying wafergraph.com semiconductor supply-chain information
Accessing AI-related supply-chain data exposed by wafergraph.com
Integrating wafergraph.com data into MCP-compatible developer workflows

⚡ Developer Benefits

Simple access model: no auth
Fixed tool set (9 tools) for predictable integration
MCP-compatible interface for supply-chain data retrieval

⚠️ Limitations

Read-only: cannot modify or write data
Tool surface limited to 9 tools

wafergraph-mcp

A remote MCP server exposing wafergraph.com's semiconductor & AI supply-chain dataset — 565 companies across 12 segments, the supplier/customer graph, and a 74-deal M&A corpus — as nine read-only tools any MCP-speaking AI agent can call directly.

No auth, no cost, read-only. Streamable HTTP transport at /mcp. Human landing page at /.

Live: https://wafergraph-mcp.jwpalm99.workers.dev

Tools

Tool	Purpose
`search_companies({query?, segment?, country?})`	Name/description search with segment & country filters. Compact list, capped at 25, with a total match count.
`get_company({id})`	Full allowed profile for one company (by id or name) plus its supplier/customer edges.
`get_segments()`	The 12-segment taxonomy (+ subsegments, market_position enum) with live company counts.
`get_supply_chain({id, direction, depth})`	Walk the supplier/customer graph from a focal company up to 2 tiers up (`"up"`), down (`"down"`), or `"both"`.
`get_deals({query?, segment?})`	Search the M&A deal corpus. Compact list, capped at 30, with a total match count.
`compare_companies({ids})`	Side-by-side comparison of 2-6 companies on aligned fields, plus their shared and unique supply-chain counterparties.
`get_country_exposure({segment?})`	Geographic concentration: which countries host a segment's companies, ranked by count, with disclosed market-cap coverage.
`find_chokepoints({segment?, limit?})`	Rank chokepoints by downstream dependency weighted by market position. Transparent heuristic, not a proprietary risk model.
`analyze_portfolio_exposure({holdings})`	Map tickers or ids to segment/country exposure and flag suppliers that several holdings share. Not investment advice.

Every response includes:

data — the payload.
attribution — compiled-by/sources block (SEC, Wikidata, Wikipedia, GLEIF) plus a company_url back to the full sourced profile on wafergraph.com.
links — { report, newsletter } pointing back to wafergraph.com and its $99 report.

Field discipline

Company records include key_products as of 2026-07-19. That field in wafergraph's own dataset was originally bulk-drafted with a known fabrication/mis-scope history and was withheld here until a verified deep-fill landed upstream; it now has (confirmed live) 564/565 companies filled, with only sk_enpulse empty (defunct, absorbed into SKC 2025-12-23). Every field shipped here — name, ticker, market_cap_usd_b, segments, one_liner, market_position, key_products, key_customers/key_suppliers graph edges, deals — is established, trust-checked data. Fields are still whitelisted (not blacklisted) in src/types.ts (toAllowedCompany), so anything added upstream later stays excluded by default until deliberately added.

What this server records

Counters only, never identities. No IPs, no query contents or tool arguments, no user identifiers, no cookies, no PII. Specifically: how many times each tool was called per day, how many distinct sessions opened per day, and which client software connected (the clientInfo name and version your MCP client already sends in the initialize handshake, e.g. claude-code@2.1.0).

Sessions are not users — one person reconnecting counts several times. Nothing recorded here can identify who you are.

Install

Claude Code

code

claude mcp add --transport http wafergraph https://wafergraph-mcp.jwpalm99.workers.dev/mcp

claude.ai (custom connector)

Settings → Connectors → Add custom connector → paste:

code

https://wafergraph-mcp.jwpalm99.workers.dev/mcp

Generic MCP client (Streamable HTTP)

json

{
  "mcpServers": {
    "wafergraph": {
      "url": "https://wafergraph-mcp.jwpalm99.workers.dev/mcp"
    }
  }
}

Architecture

Cloudflare Worker, TypeScript, built on the agents package's McpAgent (Durable-Object-backed Streamable HTTP MCP server — free on the Workers Free plan; SQLite storage backend). See CLAUDE.md for the file map and the data-source-mode decision (hybrid live-fetch + one vendored snapshot, discovered by E2E-testing the upstream endpoints rather than assumed).

Development

bash

npm install
npm run dev       # wrangler dev, local
npm run typecheck # tsc --noEmit
npm run deploy    # wrangler deploy

Attribution & licensing

See ATTRIBUTION.md for the full source/license breakdown (SEC EDGAR public domain, Wikidata CC0, Wikipedia CC BY-SA 4.0 — attribution required, GLEIF). Short version: free to use, credit wafergraph.com, not financial advice.

This is an independent project built against wafergraph.com's public dataset; it is not an official wafergraph product.

query	string	optional	Case-insensitive substring match against company name and one_liner.
segment	string	optional	Filter to companies with this taxonomy segment id, e.g. 'foundry', 'equipment_front_end' (see get_segments).
country	string	optional	Filter to companies headquartered in this country, e.g. 'Taiwan' (case-insensitive).

id	string	required	Focal company id or name.
direction	string	optional	up = walk suppliers only, down = walk customers only, both = walk both directions.
depth	integer	optional	Number of tiers to walk, capped at 2.

query	string	optional	Case-insensitive substring match against deal title and summary.
segment	string	optional	Filter to deals where at least one named party is a company in this taxonomy segment id.

segment	string	optional	Restrict to one taxonomy segment id (see get_segments).
limit	integer	optional	How many to return (1-25, default 10).

Wafergraph MCP

com.wafergraph/wafergraph-mcp MCP Server

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Topics

search_companies

get_company

get_segments

get_supply_chain

get_deals

compare_companies

get_country_exposure

find_chokepoints

analyze_portfolio_exposure

wafergraph-mcp

Tools

Field discipline

What this server records

Install

Claude Code

claude.ai (custom connector)

Generic MCP client (Streamable HTTP)

Architecture

Development

Attribution & licensing

Install

Remote endpoint