Glazing Knowledge MCP

A free, hosted Model Context Protocol server that gives AI agents a curated reference for US commercial glass and glazing: architectural glass makeups and performance data, coated-glass and aluminum-framing "or equal" cross-references, safety-glazing, energy, impact and fire code limits, and early-stage budget ranges. Every answer is cited to a topic and section and keeps a confidence tag, so you can see how solid each item is.

https://glazing-mcp.glazingkb.workers.dev/mcp

Streamable HTTP · no sign-up, no API key · read-only · free during launch

Reference info; verify with manufacturer data, local code, and a licensed professional.

This repository holds listing and connection information only. The server itself is hosted; there is nothing to install.

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What it covers

• Glass: annealed, heat-strengthened, tempered, laminated, insulating glass, low-E and reflective coatings, spandrel, low-iron, heat soak, glass performance terms (VLT, SHGC, U-factor, LSG).
• Glass performance data: 227 one-inch insulating-glass makeups from Vitro, Guardian SunGuard and Viracon, filterable by maker, product, substrate, SHGC, VLT, U-value and LSG. Old product names are mapped to current ones.
• Equivalents: coated-glass equivalents across makers with a match rating (Close / Approximate / Not supported by the numbers), and storefront, curtain wall, entrance and window series equivalents across major aluminum framing manufacturers, with discontinued and renamed notices.
• Codes and standards: safety glazing (IBC 2406), energy (IECC, ASHRAE 90.1, Title 24), hurricane/impact, fire-rated glazing, wind load (ASTM E1300), railings and guards, testing standards.
• Systems and practice: storefront, curtain wall, all-glass/butt-glazed walls and doors, structural silicone, sealants, specs, submittals, warranties, lead times, estimating red flags.
• Budget ranges: experienced-estimator 2026 US installed budget ranges for early estimating and sanity checks. Never for bids.

32 topics in all, US national coverage.

Confidence tags

Answers keep the knowledge base's tags. Agents are asked to pass them on to you.

Tag	Meaning
[V]	Verified against a published source
[V-mfr]	Manufacturer-published claim
[UNVERIFIED]	Needs confirmation before you rely on it
[inference]	Reasoned from sources
[Expert]	Practitioner judgment (e.g. budget ranges)

Tools

Tool	What it does
list_topics	Lists the 32 topics with one-line summaries and how many items in each are still unverified.
get_topic	Reads a full topic or one section (e.g. 30.4, sources, summary table), with tables intact. Long topics are paged.
search_glazing_knowledge	Keyword (BM25) search across all topics. Returns cited snippets with topic and section ids, matching tables, and tags.
lookup_glass_performance	Filters center-of-glass data for 1 in. IGUs by maker, product, substrate, max_shgc, min_vlt, max_u, min_lsg. Returns VLT, reflectance, U (air/argon), SHGC, LSG and catalog status.
cross_reference_glass	Given a coating (e.g. SNX 62/27, Solarban 70, VNE-53), returns equivalents from other makers with a match rating.
cross_reference_aluminum_system	Given a framing series (e.g. Kawneer Trifab 451), returns equivalent series from other manufacturers with basis, status, and discontinued notices.
budget_price_range	[Expert] 2026 US installed budget ranges for a scope item (per SF, LF, each, or LS). Budget use only.

All tools are read-only and idempotent (readOnlyHint: true, destructiveHint: false). Glass values are center-of-glass, not NFRC whole-product ratings.

Example prompts

• "What's the Vitro equivalent of Guardian SunGuard SNX 62/27?"
• "Kawneer Trifab 451: what are the equals from other manufacturers?"
• "Max size for 1/2 in. tempered butt-glazed glass?"
• "IECC 2021 climate zone 2 fenestration SHGC and U-factor limits?"
• "List 1-inch IGUs with SHGC at or below 0.25 and VLT of at least 50%, sorted by LSG."
• "Which glazing locations does IBC 2406 treat as hazardous?"
• "Budget range per SF for exterior storefront?"

Connect

The endpoint needs no headers or credentials.

Claude (web, desktop, mobile): Settings → Connectors → Add custom connector → paste https://glazing-mcp.glazingkb.workers.dev/mcp.

Claude Code:

claude mcp add --transport http glazing https://glazing-mcp.glazingkb.workers.dev/mcp

Claude Desktop config file (claude_desktop_config.json, uses the mcp-remote bridge; needs Node.js):

{
  "mcpServers": {
    "glazing": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://glazing-mcp.glazingkb.workers.dev/mcp"]
    }
  }
}

Cursor (~/.cursor/mcp.json or .cursor/mcp.json):

{
  "mcpServers": {
    "glazing": {
      "url": "https://glazing-mcp.glazingkb.workers.dev/mcp"
    }
  }
}

VS Code (.vscode/mcp.json):

{
  "servers": {
    "glazing": {
      "type": "http",
      "url": "https://glazing-mcp.glazingkb.workers.dev/mcp"
    }
  }
}

Windsurf (~/.codeium/windsurf/mcp_config.json):

{
  "mcpServers": {
    "glazing": {
      "serverUrl": "https://glazing-mcp.glazingkb.workers.dev/mcp"
    }
  }
}

Gemini CLI (~/.gemini/settings.json):

{
  "mcpServers": {
    "glazing": {
      "httpUrl": "https://glazing-mcp.glazingkb.workers.dev/mcp"
    }
  }
}

Codex CLI (~/.codex/config.toml):

[mcp_servers.glazing]
url = "https://glazing-mcp.glazingkb.workers.dev/mcp"

ChatGPT: Settings → Apps & Connectors → Advanced settings → enable Developer mode → Create, then paste the URL with authentication set to none.

Any other client that only supports local (stdio) servers: npx -y mcp-remote https://glazing-mcp.glazingkb.workers.dev/mcp

Quick check from a terminal:

npx @modelcontextprotocol/inspector --cli https://glazing-mcp.glazingkb.workers.dev/mcp --transport http --method tools/list

Pricing

Free during launch. Per-request agent payments (pay-per-call over the x402 protocol, so agents can pay without an account) are planned for some tools later. Topic browsing will stay free, and any change will be announced here before it takes effect.

Privacy and usage logging

Usage is logged anonymously to improve coverage: timestamp, tool name, a redacted and truncated query (emails, phone numbers and long digit strings are masked), result count, latency, MCP client name/version, a coarse user-agent family, and country. No IP addresses, cookies, tokens or personal data are stored. Logs are deleted after 180 days. Don't put confidential project information in queries.

Disclaimer

This service provides general reference information for commercial glazing professionals. It is not engineering, legal, or code-compliance advice, and it is not a substitute for manufacturer data, the code adopted by your jurisdiction, project specifications, or review by a licensed professional. Items tagged [UNVERIFIED] or [inference] need confirmation. Budget ranges are [Expert] estimates that vary by region, scope and market, and must never be used for bids. Equivalents are screening aids: "equivalent" does not mean identical, so check depth, glazing plane, glass thickness, thermal and structural performance before substituting. Information may be out of date; product lines change.

Reference info; verify with manufacturer data, local code, and a licensed professional.

License

The files in this repository are licensed under CC BY-ND 4.0. The hosted service, its knowledge base and its responses are proprietary, all rights reserved. See NOTICE.md. Product names are trademarks of their respective owners; this project is independent and not affiliated with any manufacturer.

Contact

Questions, corrections, or a product we got wrong: open an issue.