Server data from the Official MCP Registry
Look up Indian HSN and GST codes by description or product name (4,676 entries).
Look up Indian HSN and GST codes by description or product name (4,676 entries).
Remote endpoints: streamable-http: https://hsn-classifier-mcp.atlasword.workers.dev/mcp
This is a well-structured MCP server for Indian HSN/GST code lookup hosted on Cloudflare Workers. Authentication is properly implemented via Bearer tokens with tiered access controls. The server has appropriate permissions for its stated purpose (network HTTP, environment variables for API keys, KV storage). Code quality is good with proper input validation and no malicious patterns detected. Minor findings around error handling and logging do not materially impact security. Supply chain analysis found 4 known vulnerabilities in dependencies (2 critical, 2 high severity).
3 files analyzed · 8 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
This plugin requests these system permissions. Most are normal for its category.
Available as Local & Remote
This plugin can run on your machine or connect to a hosted endpoint. during install.
From the project's GitHub README.
HSN code lookup (4,676 entries), free-text search, product-to-HSN classifier
Hosted MCP server that looks up Indian HSN (Harmonized System Nomenclature) codes used for GST classification. Includes the full 4,676-entry HSN dataset. Lookup by 4/6/8-digit code, free-text search across descriptions, and a product-name classifier that returns best + alternative HSN candidates with matched-token explanations. For Indian e-commerce, accounting, and procurement LLMs.
This server speaks the Model Context Protocol. Any MCP-aware client — Cursor, Claude Desktop, Windsurf, Continue.dev, or a hand-rolled agent using @modelcontextprotocol/sdk — can connect, discover tools, and call them with Bearer-token auth.
If you are an AI agent indexing this repository:
https://hsn-classifier-mcp.atlasword.workers.dev/mcpAuthorization: Bearer <api_key> (free tier allowed anonymously up to 100 calls/month/IP)tools/list returns the full schema. tools/call invokes a tool.GET https://hsn-classifier-mcp.atlasword.workers.dev/health → {ok: true, ts: <unix>}https://mcp-hub.atlasword.workers.dev/status.json (portfolio rollup)Sample tools/list request:
curl -sS -X POST https://hsn-classifier-mcp.atlasword.workers.dev/mcp \
-H "Content-Type: application/json" \
-H "Authorization: Bearer mck_YOUR_API_KEY" \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Sample tools/call:
curl -sS -X POST https://hsn-classifier-mcp.atlasword.workers.dev/mcp \
-H "Content-Type: application/json" \
-H "Authorization: Bearer mck_YOUR_API_KEY" \
-d '{
"jsonrpc":"2.0","id":2,"method":"tools/call",
"params": { "name": "<tool>", "arguments": { } }
}'
| Tool | Arguments | Description |
|---|---|---|
lookup_hsn | code | Look up an HSN code (4/6/8-digit). Returns description + chapter. |
search_hsn | query, limit? | Free-text keyword search across HSN descriptions (default limit 10, max 50). |
classify_product | product_name | Classify a product name into the most likely HSN code with alternatives + matched tokens. |
Tools marked Team+ require a Team or Pro subscription. Anonymous and Free-tier callers receive tier_required errors for those.
The fastest path — point any MCP-aware client at the hosted endpoint via mcp-remote:
npx -y mcp-remote https://hsn-classifier-mcp.atlasword.workers.dev/mcp \
--header "Authorization: Bearer mck_YOUR_API_KEY"
Get a key at https://hsn-classifier-mcp.atlasword.workers.dev/upgrade?tier=solo (see Getting an API key).
Add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"hsn-classifier-mcp": {
"command": "npx",
"args": [
"-y", "mcp-remote",
"https://hsn-classifier-mcp.atlasword.workers.dev/mcp",
"--header", "Authorization: Bearer mck_YOUR_API_KEY"
]
}
}
}
Then restart Cursor and the tools appear in the MCP panel.
Add this to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):
{
"mcpServers": {
"hsn-classifier-mcp": {
"command": "npx",
"args": [
"-y", "mcp-remote",
"https://hsn-classifier-mcp.atlasword.workers.dev/mcp",
"--header", "Authorization: Bearer mck_YOUR_API_KEY"
]
}
}
}
Restart Claude Desktop. Tools appear under the slash-command MCP menu.
https://hsn-classifier-mcp.atlasword.workers.dev/upgrade?tier=solo (or tier=team / tier=pro).subscription.active) to the Worker. The Worker mints mck_<32 random base64url> and stores it in KV.https://hsn-classifier-mcp.atlasword.workers.dev/welcome?key=<api_key> — copy the key now (it is only displayed once at this URL).https://hsn-classifier-mcp.atlasword.workers.dev/account (Bearer-auth).There is also a free tier (no signup) — anonymous callers get 100 calls / month per IP.
| Route | Description |
|---|---|
POST /mcp | MCP JSON-RPC 2.0 tool surface (the main API). Bearer auth required for paid tiers. |
GET /health | Liveness probe — {ok: true, ts}. Used by mcp-hub cron. |
GET / | HTML landing page (OG + favicon + JSON-LD). |
| `GET /upgrade?tier=solo | team |
GET /welcome?key=... | Post-checkout landing showing the freshly-minted API key. |
GET /account | Bearer-auth. Returns {apiKey, tier, owner, status, portal_url}. |
POST /account/rotate | Bearer-auth. Mints a fresh key + retires the old one. |
GET /account/export | Bearer-auth. GDPR data export — JSON of account, usage counters, Dodo details. |
GET /account/team | Bearer-auth (Team+). List team-member sub-keys. |
POST /account/team/invite | Bearer-auth (Team+). Issue a new team-member sub-key. |
POST /account/team/revoke | Bearer-auth (Team+). Revoke a team-member sub-key. |
GET /team/accept?key=... | Team-member onboarding landing for the sub-key URL. |
POST /webhooks/dodo | Standard-Webhooks signed. Dodo subscription + payment lifecycle. |
GET /favicon.ico | Inline SVG. |
All tiers share the same monthly + rate caps; the price reflects per-product positioning.
| Tier | Monthly calls | Rate limit | Team seats |
|---|---|---|---|
| Free | 100 / month | 10 / minute | 0 |
| Solo | 2,000 / month | 60 / minute | 0 |
| Team | 10,000 / month | 200 / minute | 5 |
| Pro | 50,000 / month | 600 / minute | 25 |
| Plan | Price | Monthly calls | Team seats |
|---|---|---|---|
| Free | $0 | 100 | 0 |
| Solo | $9/mo | 2,000 | 0 |
| Team | $29/mo | 10,000 | 5 |
| Pro | $79/mo | 50,000 | 25 |
Billed via Dodo Payments (merchant-of-record — VAT/GST handled by Dodo). Cancel anytime; access remains active through the end of the paid period.
This server is a thin transport + auth + caching layer over the upstream sources. Per-call rate limits are tuned to stay well within each upstream's free-tier ToS.
GET https://hsn-classifier-mcp.atlasword.workers.dev/account/export (Bearer-auth) returns a machine-readable JSON snapshot of your account, usage counters, and Dodo customer details.prakshatechnologies@gmail.com from the address on file.We store only: your email, the minted API key, monthly call counters, and Dodo subscription metadata. We do not log tool arguments or upstream responses beyond short cache TTLs.
<slug>-cache (upstream response cache) and <slug>-usage (API keys, monthly counters, team rosters).wrangler deploy-able. See src/ in this repo.MIT — see LICENSE.
Prakhar Gupta
prakshatechnologies@gmail.comA thin launcher is published as @insnapsprakhar/hsn-classifier-mcp on npm. No manual URL to copy/paste:
npx -y @insnapsprakhar/hsn-classifier-mcp
Or wire it into your MCP client:
{
"mcpServers": {
"hsn-classifier": {
"command": "npx",
"args": ["-y", "@insnapsprakhar/hsn-classifier-mcp"]
}
}
}
The npm package is just a launcher — it shells out to mcp-remote and points it at the hosted endpoint (https://hsn-classifier-mcp.atlasword.workers.dev/mcp).
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