# io.usefulapi/easypost (remote · easypost.usefulapi.io)

MCP server for EasyPost — rate shipments, buy & refund labels, track packages, verify addresses.

- Trust score: 72/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `easypost.usefulapi.io`: 72/100 (this document), [markdown](https://verifymcp.io/servers/io-usefulapi-easypost/easypost.md), [page](https://verifymcp.io/servers/io-usefulapi-easypost/easypost)

## Channel facts

- Endpoint: `https://easypost.usefulapi.io/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 78/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token.
  - HTTPS not yet verified: we couldn't determine whether a plaintext access path exists.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
  - The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 75/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 1044 tokens (~94/item across 11 items; 11 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 94/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 83% of tool parameters carry a description.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http io-usefulapi-easypost https://easypost.usefulapi.io/mcp
```

### Codex

```toml
[mcp_servers.io-usefulapi-easypost]
url = "https://easypost.usefulapi.io/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-usefulapi-easypost": {
      "type": "remote",
      "url": "https://easypost.usefulapi.io/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add io-usefulapi-easypost --url https://easypost.usefulapi.io/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  io-usefulapi-easypost:
    url: "https://easypost.usefulapi.io/mcp"
```

### Other

```json
{
  "mcpServers": {
    "io-usefulapi-easypost": {
      "type": "http",
      "url": "https://easypost.usefulapi.io/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 72, +54)

- [security improvement] Authorization: unverified → pass
- [security improvement] Transport: fail → pass
- [functional regression] MCP protocol: unverified → fail
- [functional improvement] Endpoint reachability: not serving MCP → reachable
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] Stability: unverified → 0.20

### 2026-08-01 (score 18, −53)

- [security regression] Endpoint reachability: reachable → not serving MCP
- [security regression] Stability: 0.13 → unverified
- [security regression] Authorization: pass → unverified
- [security regression] Transport: pass → fail
- [functional regression] Tool coverage: 100 → unverified
- [functional regression] Capabilities: fail → unverified

### 2026-07-31 (score 71, +4)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 67, −2)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 68, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-07-27 (score 68, +56)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 12)

First indexed and scored.

## MCP tools (11)

### `easypost_list_shipments` (~136 tokens)

List shipments

List shipments on the account, most recent first, with pagination and optional filters. API: GET /shipments.

Input parameters:

- `after_id` (string): Return records created after this shipment id.
- `before_id` (string): Return records created before this shipment id.
- `end_datetime` (string): ISO 8601 upper bound on created_at.
- `page_size` (integer): Results per page (max 100).
- `purchased` (boolean): Filter to only purchased (true) or unpurchased (false) shipments.
- `start_datetime` (string): ISO 8601 lower bound on created_at.

### `easypost_get_shipment` (~58 tokens)

Get a shipment

Retrieve a single shipment by id, including its available rates, tracking_code, and postage_label (if purchased). API: GET /shipments/{id}.

Input parameters:

- `id` (string, required): Shipment id, e.g. shp_...

### `easypost_list_trackers` (~80 tokens)

List trackers

List package trackers, optionally filtered by tracking_code or carrier. API: GET /trackers.

Input parameters:

- `carrier` (string): Filter by carrier name, e.g. USPS, UPS, FedEx.
- `page_size` (integer): Results per page (max 100).
- `tracking_code` (string): Filter by carrier tracking code.

### `easypost_get_tracker` (~51 tokens)

Get a tracker

Retrieve a single tracker by id, including current status and tracking_details history. API: GET /trackers/{id}.

Input parameters:

- `id` (string, required): Tracker id, e.g. trk_...

### `easypost_list_addresses` (~72 tokens)

List addresses

List saved addresses on the account, with pagination. API: GET /addresses.

Input parameters:

- `after_id` (string): Return records created after this address id.
- `before_id` (string): Return records created before this address id.
- `page_size` (integer): Results per page (max 100).

### `easypost_get_address` (~45 tokens)

Get an address

Retrieve a single address by id, including verification details. API: GET /addresses/{id}.

Input parameters:

- `id` (string, required): Address id, e.g. adr_...

### `easypost_verify_address` (~147 tokens)

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"] }).

Input parameters:

- `city` (string)
- `company` (string)
- `country` (string): 2-letter ISO country code, default US
- `email` (string)
- `name` (string)
- `phone` (string)
- `state` (string): 2-letter state/province code
- `street1` (string, required): Street address line 1
- `street2` (string)
- `zip` (string, required): Postal/ZIP code

### `easypost_create_shipment` (~145 tokens)

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 }).

Input parameters:

- `carrier_accounts` (array): Restrict rating to these carrier_account ids.
- `from_address` (object, required): Origin/return address.
- `parcel` (object, required): Package dimensions and weight.
- `reference` (string): Your internal reference string for the shipment.
- `to_address` (object, required): Destination address.

### `easypost_create_tracker` (~81 tokens)

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 }).

Input parameters:

- `carrier` (string): Carrier name, e.g. USPS, UPS, FedEx (helps disambiguate).
- `tracking_code` (string, required): The carrier tracking code to track.

### `easypost_buy_shipment` (~160 tokens)

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? }).

Input parameters:

- `insurance` (string): Dollar amount to insure the shipment for, e.g. "249.99".
- `rate_id` (string, required): Rate id to purchase (from create_shipment / get_shipment rates).
- `shipment_id` (string, required): Shipment id to buy, e.g. shp_...

### `easypost_refund_shipment` (~69 tokens)

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.

Input parameters:

- `id` (string, required): Shipment id to refund, e.g. shp_...

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/io-usefulapi-easypost/easypost#diagnostics

## Score history

- 2026-08-03: 72
- 2026-08-02: 72
- 2026-08-01: 18
- 2026-07-31: 71
- 2026-07-30: 67
- 2026-07-29: 69
- 2026-07-28: 68
- 2026-07-27: 68
- 2026-07-26: 12

## Links

- Remote endpoint: https://easypost.usefulapi.io/mcp
- Repository: https://github.com/m190/usefulapi-mcp
- Changelog RSS feed: https://verifymcp.io/servers/io-usefulapi-easypost/easypost/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-usefulapi-easypost/easypost/changelog.json
- HTML version of this page: https://verifymcp.io/servers/io-usefulapi-easypost/easypost