> ## Documentation Index > Fetch the complete documentation index at: https://octo-98895abd.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # lending_trades > Daily securities-lending activity per ticker, computed from B3's individual trades: count, quantity, quantity-weighted and min/max annualized rate (percentage points), and how many distinct brokers stood on each leg. History starts at first capture — B3 retains ~21 business days. **Paging.** A GET view pages normally with `limit`/`offset` (and `Range`). Every response is cut at 1000 rows server-side regardless of tier; read `Content-Range` to detect it (`0-999/*` is a truncated page, and `Prefer: count=exact` turns the `*` into the total). ## OpenAPI ````yaml /openapi.json get /lending_trades openapi: 3.1.0 info: title: SILO Data API version: '75' summary: >- Read-only Brazilian public financial data: CVM filings, BACEN series, B3 quotes and the B3 BDI group. description: > Schema `api` over PostgREST. Views are `GET /`; functions are `POST /rpc/` with a JSON body. **This document is generated** from the live Postgres catalog by `scripts/gen_openapi.py` — `pg_get_function_arguments` for the RPC signatures, `information_schema.columns` for the view columns, and the granted-to-`anon` privilege set for which objects exist at all. It is not hand-maintained, and `tests/test_openapi_spec.py` fails the build when it drifts from the SQL. ### Two different ceilings Reading one for the other is the most expensive mistake on this API. * **The row cap refuses.** Fifty-nine set-returning functions raise SQLSTATE `22023` when the window they were handed would produce more than 1000 rows. Nothing is trimmed, and the error says why and how to fix it (the message, plus PostgREST's `details` and `hint`). Five of them (`panel`, `quote_history`, `fund_nav`, `index_history`, `trade_consolidated_history`) take a `p_after` cursor so you can walk the series; the other fifty-four ask you to narrow the window. `fund_nav` paging additionally REQUIRES `p_entity_type` — its cursor is a bare period, which is unique only within one family, and CNPJs that file under both `fi` and `fidc` in the same month would otherwise be ambiguous. * **The tier ceiling clamps.** Three other functions (`search_funds`, `option_chain`, `option_exercises`) silently lower `p_limit` to a per-tier maximum. No error is raised, so the only way to know the result was cut is to know the ceiling. Signing in raises it. Separately from both, PostgREST's server-wide `db-max-rows = 1000` cuts every response, on every endpoint, for every tier. On the GET views `Content-Range` is the signal (`0-999/*`); `Prefer: count=exact` turns the `*` into a total. ### Retention Most of this warehouse is append-only history. The **B3 BDI group** — `short_interest`, `short_interest_by_sector`, `investor_flow`, `lending_trades`, `lending_participants` — is not: B3 keeps roughly 21 business days and publishes no archive. A missed session cannot be bought back. See Market Coverage. license: name: See repository url: https://github.com/PedroDnT/SILO-BZ servers: - url: https://zcjbtpxuhdekpwcxmepn.supabase.co/rest/v1 description: Supabase PostgREST, schema `api` security: - apikey: [] tags: - name: ANBIMA - name: Company events - name: Coverage & catalog - name: Derivatives - name: FIDC - name: FNET documents - name: Financials - name: Funds - name: Holdings - name: Inflation - name: Lookup - name: Macro - name: Macro expectations - name: Other - name: Panel - name: Portfolio - name: Quotes - name: Rates - name: Research - name: Screens - name: Securities lending - name: Short interest & flows paths: /lending_trades: get: tags: - Securities lending summary: lending_trades description: >- Daily securities-lending activity per ticker, computed from B3's individual trades: count, quantity, quantity-weighted and min/max annualized rate (percentage points), and how many distinct brokers stood on each leg. History starts at first capture — B3 retains ~21 business days. **Paging.** A GET view pages normally with `limit`/`offset` (and `Range`). Every response is cut at 1000 rows server-side regardless of tier; read `Content-Range` to detect it (`0-999/*` is a truncated page, and `Prefer: count=exact` turns the `*` into the total). operationId: get_lending_trades parameters: - name: select in: query required: false schema: type: string description: Columns to return, comma separated. Omit for all of them. - name: order in: query required: false schema: type: string description: >- Sort, e.g. `trade_date.desc`. Always order a paged read, or `limit`/`offset` walk an undefined sequence. - name: limit in: query required: false schema: type: integer maximum: 1000 description: >- Rows to return. The server cuts every response at 1000 whatever you ask for. - name: offset in: query required: false schema: type: integer description: Rows to skip. Pairs with `limit` and `order` to page. - name: trade_date in: query required: false schema: type: string description: >- PostgREST filter on `trade_date` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `trade_date=eq.`). - name: ticker in: query required: false schema: type: string description: >- PostgREST filter on `ticker` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `ticker=eq.`). - name: trades in: query required: false schema: type: string description: >- PostgREST filter on `trades` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `trades=eq.`). - name: quantity in: query required: false schema: type: string description: >- PostgREST filter on `quantity` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `quantity=eq.`). - name: rate_pct in: query required: false schema: type: string description: >- PostgREST filter on `rate_pct` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `rate_pct=eq.`). - name: rate_min_pct in: query required: false schema: type: string description: >- PostgREST filter on `rate_min_pct` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `rate_min_pct=eq.`). - name: rate_max_pct in: query required: false schema: type: string description: >- PostgREST filter on `rate_max_pct` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `rate_max_pct=eq.`). - name: borrower_brokers in: query required: false schema: type: string description: >- PostgREST filter on `borrower_brokers` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `borrower_brokers=eq.`). - name: lender_brokers in: query required: false schema: type: string description: >- PostgREST filter on `lender_brokers` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `lender_brokers=eq.`). - name: internal_trades in: query required: false schema: type: string description: >- PostgREST filter on `internal_trades` — `eq.`, `neq.`, `gt.`, `gte.`, `lt.`, `lte.`, `in.`, `is.` (e.g. `internal_trades=eq.`). responses: '200': description: Matching rows. content: application/json: schema: type: array items: type: object properties: trade_date: type: - string - 'null' format: date ticker: type: - string - 'null' trades: type: - integer - 'null' format: int64 quantity: type: - number - 'null' rate_pct: type: - number - 'null' rate_min_pct: type: - number - 'null' rate_max_pct: type: - number - 'null' borrower_brokers: type: - integer - 'null' format: int64 lender_brokers: type: - integer - 'null' format: int64 internal_trades: type: - integer - 'null' format: int64 headers: Content-Range: description: >- `0-999/*` means the page was cut at 1000. Send `Prefer: count=exact` for the total. schema: type: string '400': description: Bad request — a malformed filter or an unparseable argument. content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: >- No usable `apikey`, or a request for a schema outside `api`. `Accept-Profile: public` and any `cvm_*` / `b3_cotahist` / `cia_*` path answer 401 for every caller, by grant — schema `api` is the entire public surface. content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: No such endpoint in schema `api`. content: application/json: schema: $ref: '#/components/schemas/Error' components: schemas: Error: type: object description: >- PostgREST error body. `code` carries the SQLSTATE — `22023` is a contract refusal. properties: code: type: - string - 'null' examples: - '22023' message: type: - string - 'null' details: type: - string - 'null' hint: type: - string - 'null' securitySchemes: apikey: type: apiKey in: header name: apikey description: >- The publishable key (`sb_publishable_…`), on every request. It is NOT a JWT — sending it as `Authorization: Bearer` is rejected as an invalid JWT. It identifies the project, not you, and maps to the Postgres `anon` role. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.