Search agency mortgage guidelines
search_guidelinesRead-onlyIdempotent
Searches the Fannie Mae, Freddie Mac, FHA, VA and USDA mortgage guidelines and returns the most relevant verbatim passages. Each passage includes the document, version date, page, a ready-made citation (cite_as), the official source link and a citation URL on zeitro.com. A focused question per call (for example 'FHA student loan monthly payment calculation') returns the best passages. Passages may contain HTML tables. Lender overlays are not included.
Tool call template
Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.
{
"id": 1,
"jsonrpc": "2.0",
"method": "tools/call",
"params": {
"arguments": {
"question": "<question>"
},
"name": "search_guidelines"
}
}Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| top_k | No | Number of passages, 1-10. Default 6. | |
| doc_ids | No | Restrict to these documents (doc_id values from earlier results). | |
| lenders | No | Restrict to these agencies: 'Fannie Mae', 'Freddie Mac', 'FHA', 'VA', 'USDA'. Lender names are accepted but their guidelines are not in the free tier. | |
| question | Yes | A focused natural-language guideline question, e.g. 'maximum DTI for a manually underwritten FHA loan'. |
Output Schema
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||