> ## Documentation Index > Fetch the complete documentation index at: https://docs.financialdatasets.rip/llms.txt > Use this file to discover all available pages before exploring further. # Screen stocks by exchange and market cap > Screens stocks via Monid's Nasdaq `/get_stock_screener` endpoint. Only two filter fields are executable today: exchange (NASDAQ/NYSE/AMEX) and market_cap (mega/large/mid/small/micro/nano), both with operator=eq — a small subset of the full Financial Datasets screener catalog. Use GET /financials/search/screener/filters to discover the exact executable set. `currency` is accepted for FD parameter parity but only "USD" is supported (any other value answers 400). Never paginated: there is no next_page_url; use `limit` to bound the result set. ## OpenAPI ````yaml /api-reference/openapi.json post /financials/search/screener openapi: 3.1.0 info: title: Monid Finance API version: 1.0.0 summary: A Financial Datasets-compatible finance REST API backed by Monid providers. description: >- US equities fundamentals, prices, filings, news, insider trades, and a stock screener, generated faithfully from this repository's Go source (go/httpapi/rest.go, go/service, go/fd). This server is drop-in compatible with the Financial Datasets REST and MCP interface: the same route shapes, the same query parameters, and response objects whose field names and field order match the Financial Datasets contract, captured 2026-09-04. It is an independent, Monid-backed implementation; it is not affiliated with or endorsed by Financial Datasets, and no Financial Datasets data or outputs are used. **Bring your own Monid API key.** Every request carries the caller's own key in the `X-API-KEY` header. Usage bills that caller's own Monid wallet; this server never stores or logs the key. Get a key at https://monid.ai. **Coverage.** All 54 Financial Datasets REST paths are registered. all 54 return data; most call live Monid providers, and a handful (the static catalogs and the accept-universe coverage lists; see each operation's description) never call Monid at all. Every registered path answers from a live source; there are no not_implemented stubs. /kpi/metrics/sectors returns the screener provider's own industry taxonomy and /index-funds/tickers the upstream fund universe, both scraped through Monid on demand. See docs/compatibility.md for every deliberate deviation and docs/openapi-notes.md for how this document was derived. **Errors and soft failures.** Every failure — real HTTP error and zero-cost soft failure alike — uses the two-key body `{"error": , "message": }`. Some routes answer `not_found` with HTTP 200 rather than a 4xx status (see each operation's description). **Pagination.** List routes return a wrapped envelope (e.g. `{"income_statements": [...], "next_page_url": "..."}`) with opaque, server-minted base64url `cursor` tokens. Pages hold 10 records (100 for /prices). `next_page_url` is an absolute URL on this deployment's own host, present only when more records remain. **Ticker coverage lists are accept-universes, not data-coverage claims.** The eight `*/tickers` routes (e.g. /company/facts/tickers, /kpi/metrics/tickers) all answer from the same ~3,227-ticker US equity catalog: the tickers a route will ACCEPT as input, never a promise that every one of them has data for that particular dataset - this server has not measured per-dataset coverage. Their own `limit` (default 1000, max 5000) and `cursor` query parameters page through that shared universe independently of every other route's pagination convention above. contact: url: https://docs.financialdatasets.rip license: name: MIT identifier: MIT servers: - url: https://financialdatasets.rip description: Production (Fly.io). security: - ApiKeyAuth: [] tags: - name: Financial statements description: Income statements, balance sheets, cash flow statements. - name: Financial metrics description: Historical financial metrics and the live snapshot. - name: Earnings description: Earnings records composed from SEC filing events. - name: Filings description: SEC filing index and extracted filing sections. - name: Prices description: Historical OHLCV prices and the live price snapshot. - name: News description: Ticker-matched news. - name: Insider trades description: SEC Form 4 insider trading transactions. - name: Screener description: Stock screener and its executable filter catalog. - name: Company description: Company facts. - name: KPIs description: >- KPI-taxonomy metrics, forward guidance, and non-GAAP metrics extracted from SEC filings. - name: Macroeconomics description: Central bank policy interest rates. - name: Index funds description: ETF / index-fund holdings. - name: Institutional holdings description: SEC Form 13F institutional-holdings rows. - name: Ownership description: Insider, beneficial (13D/13G) and activist ownership state. - name: Not implemented description: >- Routes registered for Financial Datasets route parity; always a zero-cost not_implemented stub today. paths: /financials/search/screener: post: tags: - Screener summary: Screen stocks by exchange and market cap description: >- Screens stocks via Monid's Nasdaq `/get_stock_screener` endpoint. Only two filter fields are executable today: exchange (NASDAQ/NYSE/AMEX) and market_cap (mega/large/mid/small/micro/nano), both with operator=eq — a small subset of the full Financial Datasets screener catalog. Use GET /financials/search/screener/filters to discover the exact executable set. `currency` is accepted for FD parameter parity but only "USD" is supported (any other value answers 400). Never paginated: there is no next_page_url; use `limit` to bound the result set. operationId: screen_stocks requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ScreenStocksRequest' examples: example: value: filters: - field: exchange operator: eq value: NASDAQ limit: 10 responses: '200': description: >- Illustrative shape; market_cap/last_sale/net_change/percent_change are structural placeholders in Nasdaq's own string format, not a claim about real current market values. content: application/json: schema: $ref: '#/components/schemas/FinancialsSearchResponse' examples: example: value: search_results: - ticker: AAPL exchange: NASDAQ market_cap: '4700000000000' last_sale: $320.00 net_change: '2.50' percent_change: 0.79% - ticker: MSFT exchange: NASDAQ market_cap: '3612000000000' last_sale: $486.12 net_change: '-2.10' percent_change: '-0.43%' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '402': $ref: '#/components/responses/PaymentRequired' '429': $ref: '#/components/responses/TooManyRequests' '502': $ref: '#/components/responses/BadGateway' '504': $ref: '#/components/responses/GatewayTimeout' components: schemas: ScreenStocksRequest: type: object title: ScreenStocksRequest properties: filters: type: array minItems: 1 maxItems: 2 description: >- 1-2 filter objects. Only field=exchange or field=market_cap with operator=eq are executable; any other field/operator answers 400 bad_request before any paid call. items: type: object required: - field - operator - value additionalProperties: false properties: field: type: string enum: - exchange - market_cap description: Only exchange and market_cap are executable. operator: type: string enum: - eq description: Only eq is executable. value: type: string description: >- For exchange: NASDAQ, NYSE, or AMEX. For market_cap: mega, large, mid, small, micro, or nano. limit: type: integer minimum: 1 maximum: 100 default: 10 description: 'Maximum rows to return (default: 10, max: 100).' required: - filters FinancialsSearchResponse: type: object title: FinancialsSearchResponse description: >- screen_stocks envelope: {"search_results": [...]}. Never paginated (no next_page_url; use limit to bound the result set). properties: search_results: type: array items: $ref: '#/components/schemas/ScreenerSearchResult' required: - search_results ScreenerSearchResult: type: object title: ScreenerSearchResult description: >- One screener match row, sourced from the Nasdaq screener and rendered with FD-shaped string metrics. properties: ticker: type: string description: Uppercase ticker symbol. exchange: type: string description: Exchange, present only when the request filtered by exchange. market_cap: type: string description: >- Market capitalization as reported by the Nasdaq screener (string, as sourced). last_sale: type: string description: >- Last sale price as reported by the Nasdaq screener (string, as sourced). net_change: type: string description: Net change as reported by the Nasdaq screener (string, as sourced). percent_change: type: string description: >- Percent change as reported by the Nasdaq screener (string, as sourced). required: - ticker ErrorResponse: type: object title: ErrorResponse description: >- Uniform error/soft-failure body: {"error": , "message": }. Used both for real HTTP error statuses and for 200 OK "not_found"/"not_implemented" soft failures that this API never bills for. properties: error: type: string description: >- Machine-readable error code, e.g. bad_request, unauthorized, payment_required, rate_limited, upstream_error, upstream_schema_changed, upstream_timeout, unsupported, invalid_cursor, not_found, not_implemented. message: type: string description: Human-readable detail. required: - error - message responses: BadRequest: description: >- 400 Bad Request. Validation failed before any paid Monid call was made (bad_request), or the request is well-formed but names a capability this server deliberately rejects (unsupported), e.g. as_reported=true or a non-USD currency. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: bad_request: summary: Validation failure value: error: bad_request message: ticker must be 1-20 letters, digits, dots, or hyphens unsupported: summary: Deliberately rejected capability value: error: unsupported message: >- as_reported is not supported by the Monid-backed server; as_reported=True cannot be answered honestly. invalid_cursor: summary: Malformed pagination cursor value: error: invalid_cursor message: cursor is not a valid opaque pagination token Unauthorized: description: >- 401 Unauthorized. The X-API-KEY header was missing, empty, or contained control characters, or (if the operator configured an allowlist) the key is not on it. This check runs before any Monid call. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: unauthorized: value: error: unauthorized message: Missing or invalid API key. PaymentRequired: description: >- 402 Payment Required. The caller's own Monid wallet could not cover the call (Monid returned a blocked/insufficient-funds result). content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: payment_required: value: error: payment_required message: 'Monid run blocked: insufficient wallet balance.' TooManyRequests: description: >- 429 Too Many Requests. Per-API-key token-bucket rate limit exceeded (default 60/min per key; 10/min for keyless demo traffic, where enabled). content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: rate_limited: value: error: rate_limited message: Rate limit exceeded. Retry shortly. BadGateway: description: >- 502 Bad Gateway. The upstream Monid provider call failed for a reason other than auth/funds/timeout (upstream_error), or its payload no longer matches the shape this server parses (upstream_schema_changed). content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: upstream_error: summary: Generic upstream failure value: error: upstream_error message: provider returned HTTP 500 upstream_schema_changed: summary: Upstream payload shape drifted value: error: upstream_schema_changed message: provider payload is not valid JSON GatewayTimeout: description: 504 Gateway Timeout. The upstream Monid provider call timed out. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' examples: upstream_timeout: value: error: upstream_timeout message: provider request timed out securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-KEY description: >- The caller's own Monid API key (get one at https://monid.ai?fpr=dhruv-15136b). Passed straight through to Monid on every call, so usage bills the caller's own wallet — this is never a shared server-side credential, and the server never logs or stores it. Missing, empty, or malformed values answer 401 unauthorized before any paid call is attempted. ````