LEI by ISIN
Which entity issued a security, by ISIN.
- price
- $0.003 / call
- free tier
- free allowance
- MCP tool
- gleif__by-isin
- method
- GET
GET https://fourzerotwo.si/v1/gleif/by-isin
| Param | Type | Description |
|---|---|---|
| isin | string | ISIN |
# unpaid: returns 402 with the price curl -i "https://fourzerotwo.si/v1/gleif/by-isin?isin=US0378331005" # free tier: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/gleif/by-isin?isin=US0378331005"
Use it from an AI agent (MCP)
Add the server once, then ask for this data in plain English. The agent finds the endpoint with search_apis and runs it with call_api.
{
"mcpServers": {
"fourzerotwo": { "type": "http", "url": "https://fourzerotwo.si/mcp" }
}
}
# the call the agent makes
call_api {"tool": "gleif__by-isin", "arguments": {"isin":"US0378331005"}}
More from Global LEI Register
- LEI lookup — Legal name, addresses, jurisdiction, legal form, status and registration for one LEI.
- Search by legal name — Entities whose legal name matches.
- Fuzzy name match — Best fuzzy matches of a name to LEIs — for messy company names.
- Autocomplete — Name autocompletion across the LEI index.
- Direct parent — The direct accounting parent of an entity.
- Ultimate parent — The ultimate accounting parent of an entity.
- Direct children — Entities directly owned by this entity.
- Branches — Registered branches of an entity.
- LEI by BIC — Which entity holds a SWIFT/BIC code.
- ISINs issued — Securities (ISINs) issued by an entity.
Source: Global Legal Entity Identifier Foundation (GLEIF), LEI data available under CC0 1.0.