Scan receipts with Taggun OCR from a URL or file and read receipt-validation campaigns. Hosted by usefulapi — connect from Claude, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"taggun": {
"url": "https://taggun.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"taggun": {
"type": "http",
"url": "https://taggun.usefulapi.io/mcp"
}
}
}Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
The login page asks for your Taggun API key.
Your key is emailed when you sign up and is always in your Taggun account dashboard (taggun.io/account). Every scan this server runs counts against your own Taggun quota and plan (free for the first 30 days or 1,000 scans, then billed per scan by Taggun). Your key is used only to call the Taggun API on your behalf; it is never shown to anyone.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Taggun API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
| Tool | Type | What it does |
|---|---|---|
taggun_scan_receipt_url | write | Scan a receipt or invoice from a URL WRITE: this scan counts against YOUR Taggun quota and plan (free for the first 30 days or 1,000 scans, then billed per scan by Taggun), even if the receipt fails validation; it is never retried automatically. Document content is not logged by this server. Extract structured data (merchant, date, total, tax, and in verbose mode line items) from a receipt or invoice at a public https URL (JPEG, PNG, GIF, HEIF/HEIC or PDF up to 5 pages, max 20 MiB). The URL must be a public host name: no IP addresses, localhost, internal names, credentials or non-default ports. POST /api/receipt/v1/{simple|verbose}/url. |
taggun_scan_receipt_base64 | write | Scan a receipt or invoice from base64 data WRITE: this scan counts against YOUR Taggun quota and plan (free for the first 30 days or 1,000 scans, then billed per scan by Taggun), even if the receipt fails validation; it is never retried automatically. Document content is not logged by this server. Extract structured data from a receipt or invoice sent as base64 (JPEG, PNG, GIF, HEIF/HEIC or PDF; the base64 text is capped at 2,000,000 characters, about 1.5 MB of file; for larger files use taggun_scan_receipt_url). POST /api/receipt/v1/{simple|verbose}/encoded. |
taggun_validate_receipt_campaign_url | write | Validate a receipt against a stored campaign WRITE: this scan counts against YOUR Taggun quota and plan (free for the first 30 days or 1,000 scans, then billed per scan by Taggun), even if the receipt fails validation; it is never retried automatically. Document content is not logged by this server. Scan a receipt at a public https URL and check it against the rules of a campaign stored on your Taggun account (dates, merchants, products, balance owing, fraud checks). Returns pass/fail with reasons. Needs the Campaign Validation feature on your Taggun plan; use taggun_list_campaigns for the ids. Same URL rules as taggun_scan_receipt_url. POST /api/validation/v1/campaign/receipt-validation/url. |
taggun_list_campaigns | read | List validation campaigns List the ids of the receipt-validation campaigns stored on your Taggun account (an empty list is normal). Does not use a scan. Needs the Campaign Validation feature; without it Taggun answers that the feature must be enabled. GET /api/validation/v1/campaign/settings/list. |
taggun_get_campaign | read | Get a validation campaign's rules The stored validation rules of one campaign (dates, merchants, products, fraud checks, SmartValidate prompts). Does not use a scan. GET /api/validation/v1/campaign/settings/{campaignId}. |
taggun_export_reference_data | read | Export account reference data (CSV) Read the reference data stored on your Taggun account as CSV: product_categories (the category taxonomy), known_merchants (merchant names and locations used for matching) or product_codes (expected product codes). Read-only; does not use a scan. The text is cut at 40,000 characters. GET /api/account/v1/{product-categories|known-merchants|known-product-codes}/export. |
taggun_usage_status | Usage status (free-tier meter) Report the caller's current free-tier usage this month: calls used, monthly limit, remaining, and whether the cap is reached. Read-only; does not count against the meter. | |
taggun_request_feature | Request a missing feature Tell usefulapi that the user needs something the Taggun tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. | |
taggun_upgrade | Upgrade to Pro (unlimited) Subscribe to the Pro plan for UNLIMITED Taggun tool calls (the free tier caps monthly usage). Choose monthly ($9/month) or yearly ($90/year — 2 months free) billing. Returns a Stripe Checkout link to open in your browser; after payment your account upgrades automatically. Does not count against the meter. | |
taggun_cancel_subscription | Cancel the Pro subscription Cancel the caller's Taggun Pro subscription at the end of the paid period (no refund for the current period; unlimited calls continue until then, then the free tier applies). Requires confirm: true. Run taggun_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 100 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited |
Pro covers this Taggun server only. Subscribe with taggun_upgrade (it returns a Stripe Checkout link). Cancel any time with taggun_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running taggun_upgrade before then undoes the cancel. Or write to [email protected].
No. usefulapi is an independent service. It is not affiliated with or endorsed by Taggun. The server calls the Taggun API with your own Taggun access, so it sees only the data that your account can see.
The login page asks for your Taggun API key. See Before you connect for where to find it.
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Taggun API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Taggun API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Taggun.
Yes, if you approve it. 3 of the 6 Taggun tools can create or change data. The other 3 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 100 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls, for this Taggun server only. Run taggun_usage_status to see how many calls you used.
Ask the AI to run taggun_upgrade: it returns a Stripe Checkout link. To cancel, run taggun_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with taggun_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.