MCP server for EasyPost — rate shipments, buy & refund labels, track packages, verify addresses. 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": {
"easypost": {
"url": "https://easypost.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"easypost": {
"type": "http",
"url": "https://easypost.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 EasyPost API key.
Find it in EasyPost → Account Settings → API Keys (use a test key for development). Your key is used only to call the API on your behalf and to derive a private account id; 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 EasyPost 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.
Turn on the EasyPost connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
easypost_list_shipments | read | List shipments List shipments on the account, most recent first, with pagination and optional filters. API: GET /shipments. |
easypost_get_shipment | read | Get a shipment Retrieve a single shipment by id, including its available rates, tracking_code, and postage_label (if purchased). API: GET /shipments/{id}. |
easypost_list_trackers | read | List trackers List package trackers, optionally filtered by tracking_code or carrier. API: GET /trackers. |
easypost_get_tracker | read | Get a tracker Retrieve a single tracker by id, including current status and tracking_details history. API: GET /trackers/{id}. |
easypost_list_addresses | read | List addresses List saved addresses on the account, with pagination. API: GET /addresses. |
easypost_get_address | read | Get an address Retrieve a single address by id, including verification details. API: GET /addresses/{id}. |
easypost_verify_address | write | Verify an address Create and verify a US or international address, returning deliverability and normalized/corrected fields. No charge. API: POST /addresses (body { address, verify: ["delivery"] }). |
easypost_create_shipment | write | Create a shipment (get rates) Create a shipment from a to_address, from_address, and parcel, returning the available RATES from all enabled carriers. This only RATES the shipment — it does NOT purchase a label and does NOT charge the account; buying is a separate step (easypost_buy_shipment). API: POST /shipments (body { shipment }). |
easypost_create_tracker | write | Create a tracker Start tracking a package by its carrier tracking code. Returns the tracker with current status. No charge. API: POST /trackers (body { tracker }). |
easypost_buy_shipment | write | Buy a shipping label PURCHASE a shipping label for a shipment at a chosen rate. WARNING: this CHARGES the EasyPost account balance and is irreversible except by requesting a refund (easypost_refund_shipment). Pick a rate_id from the rates returned by easypost_create_shipment or easypost_get_shipment. API: POST /shipments/{id}/buy (body { rate: { id }, insurance? }). |
easypost_refund_shipment | write | Refund / void a label Request a refund (void) of a purchased shipping label. WARNING: reverses a purchase; approval depends on the carrier and label age. API: POST /shipments/{id}/refund. |
easypost_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. | |
easypost_request_feature | Request a missing feature Tell usefulapi that the user needs something the EasyPost 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. | |
easypost_upgrade | Upgrade to Pro (unlimited) Subscribe to the Pro plan for UNLIMITED EasyPost 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. | |
easypost_cancel_subscription | Cancel the Pro subscription Cancel the caller's EasyPost 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 easypost_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 |
| Pro | $9/mo · $90/yr | Unlimited |
Pro covers this EasyPost server only. Subscribe with easypost_upgrade (it returns a Stripe Checkout link). Cancel any time with easypost_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running easypost_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 EasyPost. The server calls the EasyPost API with your own EasyPost access, so it sees only the data that your account can see.
The login page asks for your EasyPost 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 EasyPost 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 EasyPost 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 EasyPost.
Yes, if you approve it. 5 of the 11 EasyPost tools can create or change data. The other 6 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 EasyPost server only. Run easypost_usage_status to see how many calls you used.
Ask the AI to run easypost_upgrade: it returns a Stripe Checkout link. To cancel, run easypost_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 easypost_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.