# MerchantHQ Card Acquirer Index

> UK card-payment acquirer terms and fees from the MerchantHQ Card Acquirer Index. Read-only.

- name: uk.co.merchanthq/card-acquirer-index
- version: 1.0.1
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 91/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/uk.co.merchanthq%2Fcard-acquirer-index
- tools: https://api.protogrid.dev/v1/servers/uk.co.merchanthq%2Fcard-acquirer-index/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "card-acquirer-index": {
      "type": "http",
      "url": "https://merchanthq.co.uk/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 99
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-97% +updated-11d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 91/100 (strong)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 1 of 1 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 220 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump
- pass `tools.hidden_text`: no hidden text in tool names, descriptions, schemas or annotations

### stability: 100 (weight 15)

- pass `stability.changes`: 2 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name
- pass `stability.new_links`: no tool change named a new site

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 1, about 220 tokens to load them all
- tool set hash: bb152d34420137953479f102cc2c2629
- tools last changed: 2026-11-05T16:39:17.054Z
- badge: [![protogrid quality](https://protogrid.dev/badge/uk.co.merchanthq/card-acquirer-index.svg)](https://protogrid.dev/servers/uk.co.merchanthq/card-acquirer-index)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-11-05 `search_acquirers` changed (annotations)
- 2026-11-05 `search_acquirers` changed (title, description, annotations)
  - before: Search UK card-payment acquirers and processors in the MerchantHQ Card Acquirer Index. Filter by free-text query, acquirer tier, or sales channel. Returns factual terms (headline rate, settlement timing, contract length, channels) plus regulatory identifiers where verified. Read-only.
  - after: Search UK card-payment acquirers and processors in the MerchantHQ Card Acquirer Index. Filter by free-text query, acquirer tier, or sales channel. Returns factual terms (headline rate, settlement timing, contract length, channels) plus regulatory identifiers where we found them on the FCA register or Companies House. Read-only.

Full history: https://api.protogrid.dev/v1/servers/uk.co.merchanthq%2Fcard-acquirer-index/changes

## Remotes

- https://merchanthq.co.uk/mcp (streamable-http, auth none, reachable true, uptime30d 0.9673913)

## Packages

_none_

## Tools (1)

- `search_acquirers`: Search UK card-payment acquirers and processors in the MerchantHQ Card Acquirer Index. Filter by free-text query, acquirer tier, or sales channel. Returns factual terms (headline rate, settlement timing, contract length, channels) plus regulatory identifiers where we found them on the FCA register or Companies House. Read-only.