# Postly (remote · postly.dk)

Send printed letters to Danish addresses: regular or registered mail, printed and posted for you.

- Trust score: 73/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `postly.dk`: 73/100 (this document), [markdown](https://verifymcp.io/servers/gustavmakes-postly/api-public-v1-mcp.md), [page](https://verifymcp.io/servers/gustavmakes-postly/api-public-v1-mcp)

## Channel facts

- Endpoint: `https://postly.dk/api/public/v1/mcp`
- Transports: `streamable-http`
- Auth: `required (not validated)`
- Version: `1.0.0`

## 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 2026-11-05.

- **Endpoint Security**: 89/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, but the challenge carries no valid RFC 9728 metadata, so a client cannot discover where to get a token.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 66/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 565 tokens (~80/item across 7 items; 7 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 81/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 44% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.
  - An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the Postly MCP server?

Postly is a hosted endpoint at https://postly.dk/api/public/v1/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http gustavmakes-postly 'https://postly.dk/api/public/v1/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "gustavmakes-postly": {
      "url": "https://postly.dk/api/public/v1/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "gustavmakes-postly": {
      "type": "http",
      "url": "https://postly.dk/api/public/v1/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.gustavmakes-postly]
url = "https://postly.dk/api/public/v1/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "gustavmakes-postly": {
      "type": "remote",
      "url": "https://postly.dk/api/public/v1/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add gustavmakes-postly --url 'https://postly.dk/api/public/v1/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  gustavmakes-postly:
    url: "https://postly.dk/api/public/v1/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "gustavmakes-postly": {
      "Transport": "http",
      "Url": "https://postly.dk/api/public/v1/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add gustavmakes-postly -t streamable-http -u 'https://postly.dk/api/public/v1/mcp'
```

### Other

```json
{
  "mcpServers": {
    "gustavmakes-postly": {
      "type": "http",
      "url": "https://postly.dk/api/public/v1/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.

### 2026-11-05 (score 73, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-11-04 (score 72)

First indexed and scored.

## MCP tools (7)

### `get_pricing` (~25 tokens)

Hent priser

Henter Postlys aktuelle priser for almindelige og rekommanderede breve.

### `get_balance` (~31 tokens)

Hent saldo

Viser den forudbetalte saldo og kontostatus for den tilknyttede API-kunde.

### `send_letter` (~179 tokens)

Send brev

Sender et fysisk brev i Danmark. Beløbet trækkes fra den forudbetalte saldo, og brevet kan ikke annulleres efter afsendelse.

Input parameters:

- `fileBase64` (string): PDF som base64.
- `fileName` (string)
- `idempotencyKey` (string): Valgfri unik nøgle for denne afsendelse. Brug den samme nøgle, hvis kaldet gentages, så brevet ikke sendes to gange.
- `letterType` (string, required)
- `recipient` (required)
- `reference` (string): Din egen reference, fx et ordrenummer.
- `sender` (required)
- `testOutcome` (string): Kun med testnøgle: hvordan testbrevet ender.
- `text` (string): Brevets tekst. Udelades hvis der sendes en PDF.

### `get_letter_status` (~30 tokens)

Hent brevstatus

Viser status for et tidligere sendt brev ud fra dets id.

Input parameters:

- `id` (string, required)

### `list_letters` (~39 tokens)

Vis breve

Lister de seneste breve sendt af denne konto.

Input parameters:

- `limit` (number)
- `reference` (string): Vis kun breve med denne reference.

### `create_letter_order` (~120 tokens)

Bestil brev med betalingslink (uden API-nøgle)

Opretter et fysisk tekstbrev i Danmark og returnerer et betalingslink. Brugeren skal selv åbne linket og betale; brevet sendes først, når betalingen er gennemført. Kræver ingen API-nøgle. Bekræft altid modtagerens adresse og prisen med brugeren først.

Input parameters:

- `customerEmail` (string): Valgfri e-mail til kvittering.
- `letterType` (string, required)
- `recipient` (required)
- `sender` (required)
- `text` (string, required): Brevets tekst.

### `get_order_status` (~42 tokens)

Hent ordrestatus (uden API-nøgle)

Viser status for en ordre oprettet med create_letter_order, fx om den er betalt eller afsendt.

Input parameters:

- `orderId` (string, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/gustavmakes-postly/api-public-v1-mcp#diagnostics

## Score history

- 2026-11-05: 73
- 2026-11-04: 72

## Common questions

### What is the Postly MCP server?

Postly is an MCP server listed in the public MCP registry as io.github.gustavmakes/postly. Send printed letters to Danish addresses: regular or registered mail, printed and posted for you. This page covers its hosted endpoint (https://postly.dk/api/public/v1/mcp).

### Is the Postly MCP server safe to use?

Postly scores 73 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Postly MCP server expose?

Postly exposes 7 tools: get_pricing, get_balance, send_letter, get_letter_status, list_letters, and 2 more. Their descriptions and schemas cost roughly 466 tokens of context every time the server is loaded.

### Does the Postly MCP server require authentication?

Yes. Postly asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

### Is the Postly MCP server still maintained?

Postly is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://postly.dk/api/public/v1/mcp
- Website: https://postly.dk/api-adgang/dokumentation
- Changelog RSS feed: https://verifymcp.io/servers/gustavmakes-postly/api-public-v1-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/gustavmakes-postly/api-public-v1-mcp.json
- HTML version of this page: https://verifymcp.io/servers/gustavmakes-postly/api-public-v1-mcp