> ## Documentation Index > Fetch the complete documentation index at: https://docs.trdrs.co/llms.txt > Use this file to discover all available pages before exploring further. # Search the markets a venue can list > Searches every market trdrs carries, so you can find one to list: each registered future, by its root, its continuous months and its dated contracts, and each crypto perpetual while crypto trading is enabled. It takes the same query and returns the same page as the symbol search of the market data API, and every row names no provider, since the search is for listing, not for charting with your own source. It changes no listing. Like the market data API, it answers `429` with `Retry-After` when one address searches too often. Required scope: `venue:read`. Preview: served on the sandbox to every venue, and production availability is arranged when a venue qualifies. Trading API keys and pre-registration keys do not authorize these routes. ## OpenAPI ````yaml /api/openapi.json get /api/venues/{venueId}/reference/symbols openapi: 3.1.0 info: title: trdrs Engine API version: 1.1.0 description: >- ## API Reference Every route the trdrs engine serves, with what to send and what comes back. It covers market data and news, trading and account state for a trader's own software, the Connect API a Connect app's backend calls and the Connect dashboard's routes, Connect pre-registration, the statements that carry a Connect account between environments, the venue routes a prop firm or brokerage runs its accounts through, and a trader's own challenges. Start with the Quickstart for your first call. The API standards hold the rules every route shares: keys, errors, rate limits, idempotency, paging and streaming. servers: - url: https://app.trdrs.co description: Production - url: / description: This engine security: [] tags: - name: Venue platform preview description: >- Run your venue: its providers, instruments, conditions, groups, routes, stages, venue rules, keys, accounts, usage, balance receipts and webhooks. These routes are in preview. They are served on the sandbox to every venue, and production access is arranged when a venue qualifies. Every route here under `/api/venues/` takes a Venue key. The back office reaches the same routes under `/api/back-office/` with a verified owner’s session, because the Venue key stays on your server, and both run the same checks. The team’s routes under `/api/organizations` serve the back office and the Connect dashboard alike, since one organization can run venues and Connect apps with one team. - name: Market data description: >- Search and look up symbols, read price history and quotes, check the server clock, and stream live bars. Crypto prices come from each provider’s public feed. Futures prices are licensed to each user and stream only from that trader’s own futures source: a login on their venue’s production Rithmic system, under their own market data subscription. A Rithmic Test login carries no market data. Futures reach the trader’s own signed-in session, and a venue’s or Connect app’s backend acting for its trader. A Trading API key reads crypto market data only. Without a source, a futures request answers 503 `feed_requires_connection` and the symbol search lists no futures. - name: News description: >- Market news and the economic calendar, from licensed and open sources, tagged with futures roots as they arrive. The content is the same for everyone, and these routes admit the same callers as market data: a licensed origin, a session or a Trading API key. Page headlines by publish time, filter them by instrument root, and stream them live over server-sent events. Thumbnails come through the image route. - name: Trading description: >- Place, change and cancel orders, protect a position with a bracket and change or withdraw it, and close or flatten positions. Every call that places an order takes a `clientOrderId` as its idempotency key. - name: Account description: >- Read an account a trader can trade: its balance, positions, working orders, fills, profit and loss history, and the live account stream. You don’t create accounts here. A trader connects their own account at a provider, or opens their own Demo on the paper book, in the trdrs app. A venue issues accounts on the paper book with Issue an account into a group, and a venue pre-registers accounts at a provider through Connect with Pre-register a trader’s account. - name: Connect description: >- Connect is the account picker a trader opens: in the trdrs app, where it lists the built-in providers and every listed venue, and in hosted Connect on a Connect app’s website, where it lists the tiles the app chose. The pre-registration routes let a venue fill Connect in the trdrs app ahead of time, for a trader who signs in to trdrs. You tell trdrs that a trader has an account at a built-in provider: their sign-in email, and optionally the account number and login name. When that trader signs in, Connect shows the account ready to link, and they sign in to the provider themselves, once. The trader types their own password, and access starts when their own login succeeds. You can list who you pre-registered and who has linked, and cancel a pre-registration that hasn’t been used. A pre-registration expires after 30 days, and sending it again refreshes it. These routes take the pre-registration key. [Register an account](/guides/register-an-account) walks through the whole flow. - name: Connect apps preview description: >- Run a Connect app: your own trading interface, whose traders connect their accounts in hosted Connect on your website and trade them on your screens. The Connect API is what your backend calls with your app’s API key: Create a Connect link, read and close it, and the account, market and trading routes with your trader named in `x-trdrs-trader`. Hosted Connect calls its own routes with the frame session a Connect link opens. The Connect dashboard calls the rest with your Connect sign-in session: your apps, each app’s name and logo, API keys, websites, tiles, white-label paper and Demos, traders and active traders, invoices, conformance runs and its Connect pass. These routes are in preview, served on the sandbox, where they are free. An app’s production opens when production records the app’s Connect pass, which the sandbox signs once the app passes its Connect conformance run. - name: Connect accounts description: >- A Connect client's team signs in to the Connect dashboard with a Connect account of its own, never a trader's, and one login reaches both environments. Production answers a short statement for the signed-in account, naming its verified email and the Connect apps it owns, and sandbox exchanges it for a sandbox session and the counterpart app of each: the sandbox app that stands for the production one. The environments share no credential: production signs the statement with its own key, and sandbox checks it with production's public key alone. These routes take the Connect dashboard's own session, from the dashboard's origin; a trader's session and every key are refused, and a Connect account's session reaches no trading, account, market or AI route. - name: Challenges description: >- List evaluation programs, enroll in one, and read a trader’s own enrollments and their history. **Preview: outside the additive-only promise**, so these shapes can change; see Versioning and stability. **They take a signed-in session, not a key**, and exist only on an engine that runs with `CHALLENGES_ENABLED`. Anywhere else every one answers `404`. paths: /api/venues/{venueId}/reference/symbols: get: tags: - Venue platform preview summary: Search the markets a venue can list description: >- Searches every market trdrs carries, so you can find one to list: each registered future, by its root, its continuous months and its dated contracts, and each crypto perpetual while crypto trading is enabled. It takes the same query and returns the same page as the symbol search of the market data API, and every row names no provider, since the search is for listing, not for charting with your own source. It changes no listing. Like the market data API, it answers `429` with `Retry-After` when one address searches too often. Required scope: `venue:read`. Preview: served on the sandbox to every venue, and production availability is arranged when a venue qualifies. Trading API keys and pre-registration keys do not authorize these routes. parameters: - name: venueId in: path required: true schema: type: string format: uuid - name: q in: query required: false schema: type: string maxLength: 32 description: >- The text to search for, at most 32 characters. Empty lists everything, a page at a time. - name: class in: query required: false schema: type: string description: >- Only return markets of this asset class: `future` for futures, or `crypto` for crypto perpetuals. Any other class lists nothing. - name: offset in: query required: false schema: type: integer minimum: 0 default: 0 description: >- How many results to skip, for the next page. `hasMore` is exact, so paging until it is false always ends. - name: limit in: query required: false schema: type: integer minimum: 1 default: 50 description: >- How many results to return, 50 by default. Anything above 100 is lowered to 100, not refused. responses: '200': description: >- Success. The response is sent with `Cache-Control: no-store`, so don't cache it. content: application/json: schema: $ref: '#/components/schemas/VenueSymbolsResponse' '400': description: >- The request is malformed: invalid JSON or input, a bad cursor, or a missing `Idempotency-Key` or `If-Match` header. When one value is refused, `field` names it where the check can say which. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: >- The Venue key or the session is missing, malformed, revoked or expired. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '403': description: >- The credential is valid but can't do this: the key lacks the scope or its creator is no longer an owner, the email isn't verified, a reader tried to write, or the request came from an origin that isn't trusted. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: >- The venue, account or resource doesn't exist in this environment, or isn't yours to see. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '409': description: >- The request conflicts with what is stored: the `Idempotency-Key` was used with a different body, or the version you sent is stale. The `error` code names the conflict. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '413': description: The body is larger than this route accepts. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '415': description: 'Send the body as JSON, with `Content-Type: application/json`.' content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '503': description: >- trdrs can't complete the request right now, because a part of the venue platform or its credential store is unavailable. Don't assume a write happened: retry it with the same `Idempotency-Key`. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - venueKey: [] x-codeSamples: - lang: javascript label: TypeScript source: >- const res = await fetch('https://app.trdrs.co/api/venues/{venueId}/reference/symbols', { headers: { Authorization: `Bearer ${process.env.TRDRS_VENUE_KEY}` }, }) const data = await res.json() - lang: shell label: cURL source: |- curl 'https://app.trdrs.co/api/venues/{venueId}/reference/symbols' \ -H "Authorization: Bearer $TRDRS_VENUE_KEY" components: schemas: VenueSymbolsResponse: $ref: '#/components/schemas/SymbolsResponse' example: symbols: - symbol: ES name: E-mini S&P 500 exchange: CME type: future provider: null market: CME:ES1! - symbol: HYPERLIQUID:BTC name: Bitcoin perpetual exchange: Hyperliquid type: crypto provider: null market: HYPERLIQUID:BTC currencyCode: USDC hasMore: true ErrorResponse: type: object description: >- The body of every error response. It always carries `error`, an English sentence you can show. A refused trading request also carries `code`, one of the refusal codes, and `params`, the details of that refusal. Translate by `code` and `params`, and show a generic message for a code you don't recognize. Other errors may carry a `code` of their own. properties: error: type: string description: What went wrong, as an English sentence. code: type: string description: >- A stable machine code. On a refused trading request, it is one of the refusal codes. params: type: object description: >- The details of the refusal named by `code`, on a refused trading request. required: - error example: error: invalid_instrument SymbolsResponse: type: object description: One page of symbol search results. properties: symbols: type: array items: $ref: '#/components/schemas/WireSymbolRow' description: The matching symbols on this page. hasMore: type: boolean description: >- True when more results follow. It is exact, so paging with `offset` until it is false always ends. required: - symbols - hasMore example: symbols: - symbol: ES name: E-mini S&P 500 exchange: CME type: future provider: rithmic market: CME:ES1! - symbol: ES1! name: E-mini S&P 500 continuous front month exchange: CME type: future provider: rithmic market: CME:ES1! - symbol: ES2! name: E-mini S&P 500 continuous second month exchange: CME type: future provider: rithmic market: CME:ES2! - symbol: CME:ESZ2026 name: E-mini S&P 500 Dec 2026 exchange: CME type: future provider: rithmic market: CME:ESZ2026 - symbol: CME:ESH2027 name: E-mini S&P 500 Mar 2027 exchange: CME type: future provider: rithmic market: CME:ESH2027 hasMore: false WireSymbolRow: type: object description: One symbol in a search result. properties: symbol: type: string description: >- The symbol id: for futures a root (`ES`), a continuous symbol (`ES1!`, `ES2!`) or a dated contract (`CME:ESZ2026`). Use it exactly as returned in every other market data call. name: type: string description: >- The short display name. A continuous symbol names its position (`E-mini S&P 500 continuous front month`), and a dated contract its month (`E-mini S&P 500 Dec 2026`). exchange: type: string description: The exchange the symbol trades on. type: type: string description: The kind of instrument. provider: type: - string - 'null' enum: - rithmic - null description: >- The provider that publishes the data for you, named only when it really publishes it, or null. A symbol more than one provider serves you lists once for each. currencyCode: type: string description: >- The asset a crypto perpetual is quoted in, `USDC` or `USDT`, for writing the pair, such as `BTC / USDC`. Present only on the crypto perpetuals. market: type: - string - 'null' description: >- The market key the symbol names: the one name of the market an order trades, whichever feed or provider names the symbol. A perpetual is its registered symbol (`HYPERLIQUID:BTC`), a dated future its contract (`CME:ESZ2026`, from `ESZ6`, `ESZ2026` or `CME_MINI:ESZ2026`), a continuous future its product and position (`CME:ES1!`, and `CME:ES2!`; a root such as `ES` names position 1), and a CFD its contract. An account's markets are matched by it, so two symbols with the same key are the same market. Null for a symbol that names no market, such as an index or a venue's published data series: it is data only, and no account trades it. required: - symbol - name - exchange - type - provider - market securitySchemes: venueKey: type: http scheme: bearer description: >- The Venue key (`trdrs_vk_sandbox_…` or `trdrs_vk_production_…`), in preview. It belongs to one venue in one environment and carries the scopes it was created with. The venue's verified owner creates it while signed in. It works on the `/api/venues/{venueId}` routes and, with `trader:read` or `trader:trade`, on the account, market and trading routes, reading the venue's own traders' accounts and routing their orders, each request naming its trader in `x-trdrs-trader`. A `trdrs_sk_…` key can't be used in its place. It reaches its venue's routes and its venue's own traders, and the owner manages keys from a signed-in session. Keep it on your server. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.