# WozApi (remote · woz-api.nl)

WOZ values (official Dutch property valuations) for Dutch addresses, one lookup or a whole list.

- Trust score: 78/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-04

## Components

- remote · `woz-api.nl`: 78/100 (this document), [markdown](https://verifymcp.io/servers/nl-woz-api-wozapi/api-mcp.md), [page](https://verifymcp.io/servers/nl-woz-api-wozapi/api-mcp)

## Channel facts

- Endpoint: `https://woz-api.nl/Api/Mcp`
- Transports: `streamable-http`
- Auth: `none`
- 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 2026-10-04.

- **Endpoint Security**: 83/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 73/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1712 tokens (~190/item across 9 items; 9 tools + 0 resources), over budget; trim descriptions and params.
  - 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**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% 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.
  - We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

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

WozApi is a hosted endpoint at https://woz-api.nl/Api/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 nl-woz-api-wozapi 'https://woz-api.nl/Api/Mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "nl-woz-api-wozapi": {
      "url": "https://woz-api.nl/Api/Mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "nl-woz-api-wozapi": {
      "type": "http",
      "url": "https://woz-api.nl/Api/Mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.nl-woz-api-wozapi]
url = "https://woz-api.nl/Api/Mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "nl-woz-api-wozapi": {
      "type": "remote",
      "url": "https://woz-api.nl/Api/Mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add nl-woz-api-wozapi --url 'https://woz-api.nl/Api/Mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  nl-woz-api-wozapi:
    url: "https://woz-api.nl/Api/Mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "nl-woz-api-wozapi": {
      "Transport": "http",
      "Url": "https://woz-api.nl/Api/Mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add nl-woz-api-wozapi -t streamable-http -u 'https://woz-api.nl/Api/Mcp'
```

### Other

```json
{
  "mcpServers": {
    "nl-woz-api-wozapi": {
      "type": "http",
      "url": "https://woz-api.nl/Api/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.

### 2026-10-04 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-02 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-30 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-28 (score 75, +1)

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

### 2026-09-27 (score 74)

First indexed and scored.

## MCP tools (9)

### `create_credit_payment_link` (~127 tokens)

Betaallink voor credits

Returns a page where the user buys WozApi credits for single lookups and pays with iDEAL. This tool moves no money. Works when the user is signed in to WozApi, with the connected API key, or with a trial_code that has the user's e-mail address.

Input parameters:

- `credits` (integer|null): Optional. Number of credits; leave empty for the suggested amount.
- `trial_code` (string|null): The trial_code from start_trial. Leave empty when the user is signed in to WozApi or the connection has a WozApi API key.

### `add_trial_email` (~124 tokens)

E-mailadres aan de proef toevoegen

Adds the user's own e-mail address to a trial. The trial grows to 10 addresses in total and the user gets a WozApi account without a password (they log in with a code sent by e-mail). Only use an address the user typed.

Input parameters:

- `email` (string, required): Optional. The user's own e-mail address, only if the user typed it. Never invent one.
- `trial_code` (string, required): The trial_code from start_trial. Leave empty when the user is signed in to WozApi or the connection has a WozApi API key.

### `get_account_balance` (~65 tokens)

Saldo bekijken

Returns the remaining credits of the user's own WozApi account. Needs the user to be signed in to WozApi, or a WozApi API key on the connection; when neither is there, the client asks the user to sign in first. Read-only and free.

### `get_address_list` (~141 tokens)

Adreslijst bekijken

Returns the status of an address list: trial rows, number of addresses found, price, payment link, progress, and after payment the result rows (at most 50 per call; use offset for more) and a download link for the Excel file. Can wait up to 20 seconds for the trial or the processing to finish.

Input parameters:

- `list_token` (string, required): The list_token from start_address_list.
- `offset` (integer): Optional. First result row to return after delivery, starting at 0.
- `wait_seconds` (integer): Optional. Seconds to wait for a change while the trial or the processing runs, 0 to 20.

### `start_address_list` (~195 tokens)

Adreslijst starten

Starts WOZ lookups for a whole list of Dutch addresses, for example from a spreadsheet the user shared. Runs a free trial on 5 addresses, then gives the price of the full list and a payment page for the user. Returns a list_token for get_address_list. Sending the same list again within an hour returns the same list.

Input parameters:

- `addresses` (array, required): The addresses, one string per row in the original order, each with house number and postcode or city.
- `email` (string|null): Optional. The user's own e-mail address for delivery of the file and the invoice, only if the user typed it.
- `place` (string|null): Optional. The city for all addresses that have no postcode or city.
- `trial_code` (string|null): The trial_code from start_trial. Leave empty when the user is signed in to WozApi or the connection has a WozApi API key.

### `get_prices` (~41 tokens)

Prijzen bekijken

Returns WozApi prices: credits for single lookups by quantity, the price of an address list by size, and the trial terms. Read-only and free.

### `lookup_woz_value` (~173 tokens)

WOZ-waarde opvragen

Returns the WOZ values of one Dutch address for all available years, with the address as matched. Costs one trial address or one credit per unique address; the same address again within 7 days, an answer without WOZ values and an error cost nothing. For questions about properties, not to assess or profile people. Needs a trial_code unless the user is signed in to WozApi or the connection has a WozApi API key.

Input parameters:

- `address` (string, required): A full Dutch address with house number and postcode or city, for example 'Spuistraat 36C, 1012 TT Amsterdam'.
- `trial_code` (string|null): The trial_code from start_trial. Leave empty when the user is signed in to WozApi or the connection has a WozApi API key.

### `create_list_payment_link` (~113 tokens)

Betaallink voor de lijst

Returns the page where the user reviews the trial and the price of the list and pays with iDEAL. This tool moves no money: payment only happens when the user pays on that page. Optionally stores the user's own e-mail address for delivery of the file and the invoice.

Input parameters:

- `email` (string|null): Optional. The user's own e-mail address for delivery of the file and the invoice, only if the user typed it.
- `list_token` (string, required): The list_token from start_address_list.

### `start_trial` (~124 tokens)

Gratis proef starten

Starts a free WozApi trial without an account and returns a trial_code. The trial covers WOZ value lookups for 5 unique Dutch addresses, or 10 when the user's own e-mail address is given. Pass the trial_code to lookup_woz_value and start_address_list. Call it once per conversation, and not when the user is signed in to WozApi or the connection already has a WozApi API key.

Input parameters:

- `email` (string|null): Optional. The user's own e-mail address, only if the user typed it. Never invent one.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/nl-woz-api-wozapi/api-mcp#diagnostics

## Score history

- 2026-10-04: 78
- 2026-10-03: 77
- 2026-10-02: 77
- 2026-10-01: 76
- 2026-09-30: 76
- 2026-09-29: 75
- 2026-09-28: 75
- 2026-09-27: 74

## Common questions

### What is the WozApi MCP server?

WozApi is an MCP server listed in the public MCP registry as nl.woz-api/wozapi. WOZ values (official Dutch property valuations) for Dutch addresses, one lookup or a whole list. This page covers its hosted endpoint (https://woz-api.nl/Api/Mcp).

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

WozApi scores 78 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 WozApi MCP server expose?

WozApi exposes 9 tools: create_credit_payment_link, add_trial_email, get_account_balance, get_address_list, start_address_list, and 4 more. Their descriptions and schemas cost roughly 1,103 tokens of context every time the server is loaded.

### Does the WozApi MCP server require authentication?

No. We connected to WozApi without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the WozApi MCP server still maintained?

WozApi is still listed as active in the MCP registry. We last reached this channel on 4 October 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://woz-api.nl/Api/Mcp
- Website: https://woz-api.nl/voor-ai-agents
- Changelog RSS feed: https://verifymcp.io/servers/nl-woz-api-wozapi/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/nl-woz-api-wozapi/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/nl-woz-api-wozapi/api-mcp