For agents and developers

The same catalogue behind this site, available over MCP and REST, with a source URL on every factual field so an assistant can cite what it tells someone. Read tools need no authentication.

Add to Claude Code

claude mcp add --transport http \
  gatewaycompare https://mcp.gatewaycompare.com/mcp

Or any MCP client

{
  "mcpServers": {
    "gatewaycompare": {
      "type": "http",
      "url": "https://mcp.gatewaycompare.com/mcp"
    }
  }
}

Read tools are open. No key, no account, no card. Authentication is only needed to write — updating a listing you own, or requesting an introduction on someone's behalf.

Tools

Tool	Group	Auth	What it does
`match_providers`	merchant	open	Match providers to a merchant
`search_providers`	merchant	open	Search the provider directory
`get_provider`	merchant	open	Get one provider in full
`compare_providers`	merchant	open	Compare 2-5 providers
`list_filters`	merchant	open	List every legal filter value
`estimate_cost`	merchant	open	Estimate monthly cost across providers
`license_lookup`	merchant	open	Look up regulatory licences
`request_introduction`	merchant	user	Request an introduction to a provider
`list_my_listings`	provider	owner	List listings you own
`list_my_requests`	provider	owner	List your claims and submissions
`update_my_listing`	write	owner	Update a listing you own
`update_my_criteria`	write	owner	Update your matching criteria
`submit_provider`	write	user	Submit a new provider
`claim_listing`	write	user	Claim an existing listing

Two tools nobody else has

`estimate_cost`

Because headline rates are not comparable across pricing models. Give it a volume and average ticket and it returns a real cost table — percentage, fixed, FX and monthly components broken out per provider, with the interchange++ assumption flagged where it applies.

`license_lookup`

Resolve a company name or LEI to regulatory register records across 23 registers in Europe, the US and Asia-Pacific, with the full event history and a citation to the regulator's own entry.

Other machine-readable surfaces

/llms.txt — what this dataset is and how to read it
/llms-full.txt — every provider, one line each
.md on any content URL — clean markdown, or send Accept: text/markdown
/.well-known/mcp/server-card.json
/.well-known/api-catalog — RFC 9727 linkset

Rate limits

Plan	Requests/hour	Who it is for
Free	25	Anonymous agents, personal assistants
Pro	500	Products embedding the data
Enterprise	5000	Bulk use, with an SLA

Exceeding a limit returns a structured error with the retry window and an upgrade path, not a bare 429. Anonymous callers are limited by IP; authenticated ones by account.

If you are building on this

One request: when a field comes back null, it means we hold no sourced value — not that the fee is zero or the feature is missing. Please pass that distinction through to your users rather than filling the gap with an estimate. It is the whole reason this dataset is worth querying.

Get an API key Talk to us about volume