sg-company-lookup

By Lobang Scout — practical, evidence-backed connectors for Singapore SMEs.

A free, no-auth MCP connector that lets Claude look up Singapore companies by UEN or name, over ACRA's open data on data.gov.sg.

This is the first entry in sg-connectors — closing the gap our evaluation kept hitting: the surfaces that define a Singapore SME's day mostly have no connector. Company/UEN lookup is the most reusable starting point.

Tools

Related MCP server: Bizfile MCP

Honest scope

This connector is built on the free ACRA open dataset (Entities Registered with ACRA, data.gov.sg). Be clear about what that means:

It returns: UEN, entity name, entity type, registration status, UEN issue date, street name, postal code, issuance agency.

It does NOT return — and no free source does:

• Real-time status. The dataset is a monthly snapshot. An entity struck off yesterday may still show Registered. Treat status as as-of-last-refresh.

• Officers, directors, shareholders, financials, paid-up capital, SSIC activity, or full registered address. These live behind the paid ACRA Business Profile API (Corppass + EIQ subscription) or a ~S$5.50 Bizfile profile purchase.

• Definitive UEN validation. ACRA's check-letter algorithm is undisclosed, so validate_uen confirms format only; existence is confirmed by a dataset hit.

For anything statutory or real-time, verify on Bizfile. This connector is for fast, free first-pass lookup and enrichment — not the system of record.

Install (local clone)

python3.12 -m venv .venv
.venv/bin/pip install -r requirements.txt

Run the server (stdio):

.venv/bin/python server.py

Wire it into Claude (.mcp.json)

{
  "mcpServers": {
    "sg-company-lookup": {
      "command": "/absolute/path/to/sg-connectors/.venv/bin/python",
      "args": ["/absolute/path/to/sg-connectors/server.py"]
    }
  }
}

Optional: raise the rate limit

Without a key, data.gov.sg allows 4 requests / 10s. A free API key lifts this to 20/10s. Set it before launching Claude:

export DATAGOV_API_KEY=...

Request a key at guide.data.gov.sg.

UEN formats (what validate_uen checks)

Tests

.venv/bin/pip install -r requirements-dev.txt
.venv/bin/python -m pytest -q

Network is mocked in tests — no live calls in CI.

Data source & licence

Data: ACRA via data.gov.sg, under the Singapore Open Data Licence. This connector is an independent tool and is not affiliated with or endorsed by ACRA or GovTech.