@joinmarka/sdk

The official TypeScript client for Marka's public API, plus an MCP server built on top of it.

Marka is a canonical-listing marketplace: you create one listing, and Marka projects it to external channels. This package talks to the public /api/v1 surface — listings, search, categories, orders and the account behind your key.

Request and response types come from the same contract that generates Marka's OpenAPI document, so the SDK cannot describe an endpoint the API does not have.

npm install @joinmarka/sdk

Requires Node.js 20.19 or newer. ESM only.

Quickstart

Create an API key in Marka under Settings → API keys (it looks like mk_…).

import { MarkaClient } from "@joinmarka/sdk";

const marka = new MarkaClient({ apiKey: process.env.MARKA_API_KEY! });

const { user, plan } = await marka.getMe();
console.log(`${user.email} — ${plan.tier}`);

const { results } = await marka.search({ q: "road bike", limit: 5 });
for (const listing of results) {
  // Integer minor units — the SDK converts nothing. 4500 is $45.00.
  console.log(listing.title, listing.price, listing.currency);
}

Configuration

new MarkaClient({
  apiKey: "mk_…",
  baseUrl: "http://localhost:3001", // optional — scheme and host ONLY, no /api, no /v1
  fetch: myFetch,                   // optional injectable transport
});

Configuration is constructor arguments only. The SDK never reads process.env, so the same instance is safe in a browser, a worker, or a multi-tenant server.

Methods

Method	Endpoint
getMe()	GET /v1/me
listListings(query?)	GET /v1/listings
createListing(body)	POST /v1/listings
getListing(id)	GET /v1/listings/{id}
updateListing(id, body)	PATCH /v1/listings/{id}
publishListing(id)	POST /v1/listings/{id}/publish
search(query?)	GET /v1/search
listCategories(query?)	GET /v1/categories
listOrders(query?)	GET /v1/orders
getOrder(id)	GET /v1/orders/{id}

Errors

Failures are thrown, never returned:

import { MarkaApiError, MarkaNetworkError } from "@joinmarka/sdk";

try {
  await marka.createListing({ title: "…", description: "…", price: 4500 });
} catch (error) {
  if (error instanceof MarkaApiError) {
    // The API answered and said no. Branch on `status`, then `code`.
    if (error.status === 402 && error.code === "entitlement_required") {
      console.error("This plan cannot write through the API.");
    }
  } else if (error instanceof MarkaNetworkError) {
    // No answer at all: DNS, TLS, timeout, aborted socket. The original is on `error.cause`.
  }
}

Writes (createListing, updateListing, publishListing) require the api_write entitlement and answer 402 without it.

MCP

As a subprocess (Claude Desktop and friends)

The package ships a marka-mcp-stdio bin that serves Marka's tools over stdio. Add this to claude_desktop_config.json and restart the app — no install step, npx fetches the package:

{
  "mcpServers": {
    "marka": {
      "command": "npx",
      "args": ["-y", "-p", "@joinmarka/sdk", "marka-mcp-stdio"],
      "env": {
        "MARKA_API_KEY": "mk_YOUR_KEY_HERE"
      }
    }
  }
}

Where the package is already installed, "command": "marka-mcp-stdio" with "args": [] does the same thing. The bridge also takes --api-key= and --base-url= flags, which is handy for testing it by hand:

npx -p @joinmarka/sdk marka-mcp-stdio --help

Six tools: search_listings, get_listing, list_categories, get_me, create_listing, update_listing. Publishing is deliberately not exposed — it needs a human in the loop — and neither are orders, which carry buyer contact details (use marka.listOrders() if you want them).

In your own process

import { createMarkaMcpServer } from "@joinmarka/sdk/mcp";

const server = createMarkaMcpServer({ apiKey: "mk_…" });
await server.startStdio();

getMcpServerConfig({ apiKey }) returns ready-to-paste mcpServers blocks for both transports — the stdio one above, and an HTTP one pointing at Marka's hosted MCP gateway, which is a different server with a different tool set backed by Marka's own database.

Docs

Full documentation, including the API reference and the hosted MCP gateway, is at joinmarka.com.

License

MIT