Koskamo

Sienna MCP

Sienna is an automated cabinet-hardware advisor operated by Knobs.co that allows AI agents to query product sizing, finishes, and availability, returning complete answers with direct links to specific hardware products like knobs, pulls, and hinges.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Sienna MCP logo, by Knobs.coVendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-06Operated by Knobs.co
MCP endpoint (Streamable HTTP)
https://sienna.knobs.co/mcp
Vendor documentation

What its tools do

7 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (7)

7 of 7 have a description · 7 of 7 declare behavior hints · 3 of 5 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Passed Official MCP Registry namespace is tied to knobs.co ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Find pull length for a specific drawer width
  • Search catalog for products in a specific finish
  • Get sizing guide for knobs versus pulls
  • Retrieve store information and trade program details

Source and maintenance

Vendor evidenceRegistry 1.0.0
mcp-registry: co.knobs/sienna@1.0.0Project website

Protocol and capabilities

Server
co.knobs/sienna 1.0.1
MCP protocol negotiated in check
2025-11-25
Tools
7 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": false
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Sienna is Knobs.co's automated cabinet-hardware advisor (knobs.co: cabinet knobs, pulls, hinges, bath and door hardware from Top Knobs, Atlas Homewares, Jeffrey Alexander, Amerock, Emtek, Hickory Hardware, Rocky Mountain Hardware, Schaub, Berenson and more; U.S.-based, selling since 2004). Use ask_sienna for any advice question (sizing, what fits existing holes, finish and style pairing, which series to choose, store policies): it returns a complete answer plus the exact products with links. Use search_catalog / get_product to browse or verify specific products and prices yourself. Prices are list prices confirmed at checkout; stock and lead times are confirmed by the Knobs.co team, never by these tools. Give the shopper product URLs exactly as returned (they carry an attribution tag and nothing about the shopper). For a whole-kitchen plan send the shopper to https://knobs.co/pages/sienna?via=agent; for a person, email cs@knobs.co or call 1-800-530-8245.

Tools

7 advertised

ask_sienna — Ask Sienna (Knobs.co hardware advisor)
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Ask Knobs.co's automated cabinet-hardware advisor one question in plain words and get one complete answer with the exact products named (title, vendor, finish, size, list price, URL). Best for: which pull length for a drawer width, what fits existing holes (center-to-center), knobs versus pulls, finish and style pairing, a series in a size/finish/budget, samples, returns, the trade program. Include everything known: room, drawer widths, existing hole spacing, finish, style, budget per piece, brand likes or dislikes. One question per call; up to 600 characters.

ask_sienna input schema
{
  "type": "object",
  "required": [
    "question"
  ],
  "properties": {
    "question": {
      "type": "string",
      "description": "The shopper's question, with what is known."
    }
  },
  "additionalProperties": false
}
ask_sienna annotations
{
  "title": "Ask Sienna",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
search_catalog — Search the Knobs.co catalog
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Search the live Knobs.co catalog by item type, size, finish, brand or series ("5 inch pull satin nickel", "Top Knobs Lynwood", "3 inch matte black pull"). Returns up to 10 products with vendor, center-to-center size, overall length, finishes, list prices, variant ids and product URLs. Sizes and finishes in the query are matched exactly when possible, then nearest sizes.

search_catalog input schema
{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "description": "Plain words: item type + size + finish, or brand + series."
    }
  },
  "additionalProperties": false
}
search_catalog annotations
{
  "title": "Search catalog",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
get_product — Get one Knobs.co product
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Every variant (finish, SKU, list price, variant id) of one product by its handle (from search_catalog or a knobs.co/products/<handle> URL), with sizes and description.

get_product input schema
{
  "type": "object",
  "required": [
    "handle"
  ],
  "properties": {
    "handle": {
      "type": "string",
      "description": "The product handle, e.g. \"atlas-homewares-a656-whittier-pull-8-13-16-cc\"."
    }
  },
  "additionalProperties": false
}
get_product annotations
{
  "title": "Get product",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
sizing_guide — Cabinet hardware sizing guide
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Knobs.co's sizing rules: which pull length for which drawer width, the standard 128 mm size, knobs versus pulls, one pull or two, and how to measure existing holes. No arguments.

sizing_guide input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
sizing_guide annotations
{
  "title": "Sizing guide",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
store_info — About Knobs.co for agents
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

What Knobs.co is, what it sells, how to buy, samples, trade program, how to reach a person, and how this service works. No arguments.

store_info input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
store_info annotations
{
  "title": "Store info",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
search — Search (connector convention)
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Search Knobs.co products. Returns {results:[{id,title,url}]} where id is the product handle for fetch.

search input schema
{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string"
    }
  },
  "additionalProperties": false
}
search annotations
{
  "title": "Search",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
fetch — Fetch (connector convention)
Advertised by the server during the last successful anonymous check.
Advertised read-onlyOpen-world

Fetch one Knobs.co product document by id (the handle from search). Returns {id,title,text,url,metadata}.

fetch input schema
{
  "type": "object",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string"
    }
  },
  "additionalProperties": false
}
fetch annotations
{
  "title": "Fetch",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
879 ms
95th percentile latency
879 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 879 ms · metadata changed · 7 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http sienna-mcp https://sienna.knobs.co/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add sienna-mcp --url https://sienna.knobs.co/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable sienna-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "sienna-mcp": {
      "url": "https://sienna.knobs.co/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "sienna-mcp": {
      "type": "streamableHttp",
      "url": "https://sienna.knobs.co/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start sienna-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "sienna-mcp": {
      "type": "http",
      "url": "https://sienna.knobs.co/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http sienna-mcp https://sienna.knobs.co/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://sienna.knobs.co/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "sienna-mcp": {
      "serverUrl": "https://sienna.knobs.co/mcp"
    }
  }
}

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