treg.to / Catalog / Corpo API
10 tools · your own account · never metered

Corpo API: connect your own account

Company data from official business registers in 86 jurisdictions: search, register record, officers, shareholders and UBOs, filings, financials, KYB verification and EU VAT. Connect your own Corpo API account once and your agent uses it from then on, through one treg.to token. Calls on your own connection are never metered.
Start freeSee all 10 toolsAPI docs ↗
$1.00 of free credit once per new verified account · no card · platform tools need no provider signup
10 of 10 tools on this page are live-verified against the provider.
works in
ChatGPTClaudeClaude CodeCodexCursorGrokGemini CLI
What your agent can now do

Corpo API, one prompt away

AGENT
ChatGPTClaudeClaude CodeCodexCursorGrokGemini CLI
find a company in an official business register by name or registration number✓
get a company's official register record: legal name, number, status, address and legal form✓
list a company's directors and officers from the official register✓
→
▚ treg
$ treg call corpoapi.companies.owners
✓ 200 · $0.05/success
$ treg call corpoapi.companies.verify
✓ 200 · $0.05/success
$ treg call corpoapi.companies.filings
✓ 200 · $0.05/success
$ _
→
Corpo APIYOUR ACCOUNT
Company data from official business registers in 86 jurisdictions: search, register record, officers, shareholders and UBOs, filings, financials, KYB verification and EU VAT.
⚒ 10 TOOLS

Enrichment · https://api.corpoapi.com

Set up

Set up Corpo API in Claude Code, Codex or any agent

1Give this to your agent
in your agent's chat
set up treg — https://treg.to/llms.txt
2Or add the MCP server yourself
claude code
claude mcp add --transport http treg https://treg.to/mcp

ChatGPT

Settings → Connectors → add https://treg.to/mcp as a custom connector.

Grok bot

Add https://treg.to/mcp as a remote MCP connector in its tool settings.

Claude Desktop

Settings → Connectors → Add custom connector → https://treg.to/mcp.

Cursor, Codex, any MCP client

Point it at https://treg.to/mcp (HTTP transport).

CLI

curl -fsSL https://treg.to/install.sh | sh

Plain HTTP

LangChain, CrewAI or any code: /call/<tool-id> + X-Treg-Token: <token>. No SDK.

Try it

What's the best way to ask?

the prompt
Using treg, find a company in an official business register by name or registration number. Show me the price first.

Run one directly

a live-verified call
treg call corpoapi.companies.owners --query jurisdiction=gb --query company_number=00519500
Why treg.to

Why call Corpo API through treg.to

Your account, held safely

Connect once; treg.to keeps the credential server-side and injects it per call. No key on any machine.

Price before the call

The provider's own rate, $0.000 markup. How billing works.

Account billing

Calls through your own connection are not metered by treg.

Your own Corpo API key is free

Register it and those calls are never metered. Your key always wins.

Switch by changing a word

Another provider is a different word in the prompt, not a new integration.

One key, the whole catalog

The same token calls every provider in the catalog and 3,606 other tools.

The shelf

All 10 Corpo API tools

Company data · 10 tools
  • List a company's register filings and documents · BYOK only · live-verified · No treg charge; upstream $0.05/success
    Document catalogue for one company, newest first corpoapi.companies.filings
    $0.05 per paid call; errors, not-found and unpublished datapoints are free; the same endpoint for the same company again on the same UTC day is free
  • Get a company's filed financial statements · BYOK only · live-verified · No treg charge; upstream $0.05/success
    Document-first financial statements for one company corpoapi.companies.financials
    $0.05 per paid call; errors, not-found and unpublished datapoints are free; the same endpoint for the same company again on the same UTC day is free
  • List a company's directors and officers · BYOK only · live-verified · No treg charge; upstream $0.05/success
    Officers of one company corpoapi.companies.officers
    $0.05 per paid call; errors, not-found and unpublished datapoints are free; the same endpoint for the same company again on the same UTC day is free
  • List a company's shareholders and beneficial owners · BYOK only · live-verified · No treg charge; upstream $0.05/success
    Shareholders and beneficial owners for one company corpoapi.companies.owners
    $0.05 per paid call; errors, not-found and unpublished datapoints are free; the same endpoint for the same company again on the same UTC day is free
  • Walk a company's ownership chain to its ultimate owners · BYOK only · live-verified · No treg charge; upstream $0.05/success
    Walk the upstream ownership graph and calculate UBOs corpoapi.companies.ownership.graph
    $0.05 per paid call; errors, not-found and unpublished datapoints are free; the same endpoint for the same company again on the same UTC day is free
  • List the registers covered and what each publishes · BYOK only · live-verified · No treg charge; upstream free
    Every served location, with the status of each kind of company data corpoapi.companies.registry.coverage
  • Get a company's official register record · BYOK only · live-verified · No treg charge; upstream $0.05/success
    Look up one company by jurisdiction and registration number corpoapi.companies.registry.profile
    $0.05 per paid call; errors, not-found and unpublished datapoints are free; the same endpoint for the same company again on the same UTC day is free
  • Search official business registers by name or number · BYOK only · live-verified · No treg charge; upstream free
    Search one or more registries by name or identifier corpoapi.companies.registry.search
  • Check an EU VAT number (VIES) · BYOK only · live-verified · No treg charge; upstream $0.05/success
    Validate a VAT number against the European Commission VIES service corpoapi.companies.vat.verify
    $0.05 only when the VAT number is valid; an invalid number is free
  • Verify a company against the official register (KYB) · BYOK only · live-verified · No treg charge; upstream $0.05/success
    Resolve a company and compare the supplied claims with registry data corpoapi.companies.verify
    $0.05 only when a company is found (verified, partial or mismatch); not_found and ambiguous are free; a repeat verify of the same company on the same UTC day is free

Reliability badges come from live traffic through treg.to. Live-verified means a successful provider check; it does not verify every request variant.

Questions

Before you start

Do I need a Corpo API account?

Yes. This is an own-account connection: you sign in to Corpo API once and your agent uses that connection through your treg.to token. Calls on it are never metered.

How do I add Corpo API to Claude Code?

Run: claude mcp add --transport http treg https://treg.to/mcp. One MCP server carries Corpo API and the rest of the catalog.

Which frameworks does it work with?

Anything that speaks MCP (Claude Code, Claude Desktop, ChatGPT, Codex, Cursor, Grok) and anything that can make an HTTP request (LangChain, CrewAI, LlamaIndex, plain code).

Is this the official Corpo API MCP server?

No. treg.to serves Corpo API's real API through its own metered proxy: the request is the provider's own, the credential is injected server-side, and the answer is relayed verbatim. The official Corpo API channels are linked above.