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fourzerotwo

400+ data APIs for agents: UK companies, property, trade, tenders, recalls, sanctions.

Connector by fourzerotwo.siOfficial · Domain verified by the MCP Registry

IndexedLicense unknownRemote (HTTP)
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Install

Works with Claude Code, VS Code, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/fourzerotwo-si-data

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

  • https://fourzerotwo.si/mcp Remote (HTTP)

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About

400+ data APIs for agents: UK companies, property, trade, tenders, recalls, sanctions. Free tier

Reviews

Write a review

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
3 read · 0 write · 0 deleteRead-only
Secrets
1 (API keys, tokens or passwords)
Install scripts
Nothing to install (hosted)
Runs as
Hosted (remote endpoint)

Tools by what they do 3

From the running server's own tool list (tools/list) on Oct 25, 2026.

Read 3 · Look things up without changing anything.

  • call_api
  • list_apis
  • search_apis

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

  • X-API-Key

Network hosts it talks to 1

  • fourzerotwo.si · found in remote endpoint, install command

Tools (3)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • call_apiCall a data APIread-only

    Run one endpoint by the tool name that search_apis returned, with that endpoint's parameters, and get its data back as JSON (with source and licence attribution). Endpoints with free_tier "free" or "sample" cost nothing within the daily allowance (100 calls/day anonymously, 500 with a free key). Otherwise the result is a payment request: pay in USDC via x402 and retry with _meta["x402/payment"]. Invalid arguments are rejected before any charge, and failed upstream calls are never charged.

  • list_apisList API groupsread-only

    Overview of every API group in the catalog: name, category, summary, number of endpoints and whether it has a free tier. Always free to call. Use it to browse; use search_apis to find a specific endpoint.

  • search_apisSearch data APIsread-only

    Find the right data endpoint for a task. Searches 500+ endpoints (UK legislation, Companies House, property prices, sanctions lists, vehicle tax, weather, earthquakes, arXiv/PubMed/Crossref papers, IP geolocation, GB electricity, ONS/World Bank/ECB economics, and more) by keyword and returns each match's tool name, parameters, price and free_tier. Always free to call. Next step: pass a returned tool name to call_api.

Signals

Last release
Oct 11, 2026 (17 days ago)

Details

Registry name
si.fourzerotwo/data
Version
1.2.1
Auth
API key
License
License unknown
Website
fourzerotwo.si
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
Official MCP Registry

More from fourzerotwo.si

Cite this page

fourzerotwo MCP server. Agent Mart. https://agentmart.dev/connectors/fourzerotwo-si-data (last updated 2026-10-24)