> ## Documentation Index > Fetch the complete documentation index at: https://docs.0xinsider.com/llms.txt > Use this file to discover all available pages before exploring further. # List Large Positions > Returns the largest current open positions from graded traders, value-descending, with opaque cursor pagination. Polymarket-only by design: the large-positions scanner filters platform = 'polymarket' (backend/src/large_positions/scanner.rs:238,245), so no Kalshi rows are ever scanned and a Kalshi or unknown condition_id filter returns an empty list (never fabricated rows). The teaser cap that the internal product UI applies to anonymous viewers does not apply here: the API key already proves an active insider/annual subscription, so authed API callers get full access. The largest current open positions held by graded traders, value-descending, with opaque cursor pagination. Polymarket-only by design: the scanner filters on `platform = 'polymarket'`, so a Kalshi or unknown `condition_id` filter returns an empty list rather than fabricated rows. Useful filters: * `min_size=25000`: floor on position value in USD. * `min_grade=A`: minimum trader grade. * `category=crypto`: provider-backed market category. * `condition_id=...`: scope to one market. Accepts the raw provider `condition_id` or the `mkt_`-prefixed market id. ```bash theme={null} curl -H "Authorization: Bearer $OXINSIDER_API_KEY" \ "https://api.0xinsider.com/api/v1/large-positions?min_grade=A&min_size=25000&limit=50" ``` The API key already proves an active subscription, so authed callers get full access with no teaser cap. Cursor-paginated: pass `next_cursor` from one response as `cursor` on the next. See [Pagination](/concepts/pagination). ## OpenAPI ````yaml GET /api/v1/large-positions openapi: 3.1.0 info: title: 0xinsider API description: >- Find your edge on Polymarket and Kalshi. Every wallet graded, every trade scored, every outlier flagged. API exposes trader grades, whale trades, smart money signals, and insider detection for AI agents, trading bots, and research tools. Normal API requests use a 30-second server timeout that returns HTTP 408 Request Timeout with an empty body when exceeded. Public REST /api/v1/* endpoints, excluding /api/v1/mcp, use Bearer-token based non-credentialed browser CORS: any Origin may call with Authorization, Content-Type, If-None-Match, Idempotency-Key, and Mcp-Session-Id request headers. Remote MCP at /api/v1/mcp is non-credentialed, but still validates Origin against the 0xinsider/localhost allowlist per MCP Streamable HTTP DNS-rebinding guidance. Successful browser CORS preflight responses advertise Access-Control-Max-Age: 86400. Browser JavaScript may read X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, Retry-After, ETag, X-Request-Id, X-Request-Cost, X-Batch-RateLimit-Limit, X-Batch-RateLimit-Remaining, X-Batch-RateLimit-Reset, Mcp-Session-Id, and X-Mcp-Error-Code response headers. Credentialed first-party routes such as /api/keys, /api/billing, and auth endpoints remain restricted to configured 0xinsider origins. version: 1.0.0 contact: name: 0xinsider email: support@0xinsider.com url: https://0xinsider.com servers: - url: https://api.0xinsider.com description: >- Production (live data). Authenticate with a live key (oxi_sk_live_...); requires an active Insider subscription. - url: https://api.0xinsider.com description: >- Sandbox / test mode (deterministic fixture data, no live rows). Authenticate with a test key (oxi_sk_test_...) on a free account. Same base URL and paths as production: the key class selects live vs sandbox. Test keys are billing-exempt, served from a fixed fixture dataset, and never read live data or persist writes; webhooks, usage, and MCP responses show the response shape only. security: - bearerAuth: [] tags: - name: Traders description: Trader intelligence, batch lookups, timelines, and export readiness. - name: Positions description: Current prediction-market position snapshots from backend-owned mirrors. - name: Large Positions description: Largest current open positions from graded traders (Polymarket-only). - name: Whale Trades description: Recent and historical large trade intelligence. - name: Leaderboard description: Ranked trader discovery and category/strategy leaderboards. - name: Markets description: Market search, discovery, snapshots, and smart-score flow. - name: Insider Radar description: Suspicious trading pattern detection. - name: Events description: Durable public event replay streams. - name: Streaming description: Resumable real-time Server-Sent Events stream of live feed envelopes. - name: Webhooks description: Signed builder webhook destinations and delivery controls. - name: Usage description: Developer API budget and usage introspection. - name: System description: Health and operational status checks. - name: MCP description: Remote Model Context Protocol transport. - name: Reports description: Daily, weekly, monthly, and trader export report snapshots. paths: /api/v1/large-positions: get: tags: - Large Positions summary: List large positions description: >- Returns the largest current open positions from graded traders, value-descending, with opaque cursor pagination. Polymarket-only by design: the large-positions scanner filters platform = 'polymarket' (backend/src/large_positions/scanner.rs:238,245), so no Kalshi rows are ever scanned and a Kalshi or unknown condition_id filter returns an empty list (never fabricated rows). The teaser cap that the internal product UI applies to anonymous viewers does not apply here: the API key already proves an active insider/annual subscription, so authed API callers get full access. operationId: listLargePositions parameters: - name: limit in: query schema: type: integer minimum: 1 maximum: 100 default: 20 - name: cursor in: query description: Opaque pagination cursor from a previous response. schema: type: string - name: min_size in: query description: Minimum position value in USD. schema: type: number minimum: 0 - name: category in: query description: Filter by provider-backed market category. schema: type: string - name: min_grade in: query description: Minimum trader grade. schema: type: string enum: - S - A - B - C - D - F - name: condition_id in: query description: >- Scope to one market. Accepts the raw provider condition_id or the mkt_-prefixed market id (round-trips a value from a list response). Polymarket-only; a Kalshi or unknown id returns []. schema: type: string responses: '200': description: Large positions list headers: ETag: $ref: '#/components/headers/ETag' X-RateLimit-Limit: $ref: '#/components/headers/X-RateLimit-Limit' X-RateLimit-Remaining: $ref: '#/components/headers/X-RateLimit-Remaining' X-RateLimit-Reset: $ref: '#/components/headers/X-RateLimit-Reset' X-Request-Id: $ref: '#/components/headers/X-Request-Id' content: application/json: schema: type: object required: - object - data - has_more - meta properties: object: type: string const: list data: type: array items: $ref: '#/components/schemas/LargePosition' has_more: type: boolean next_cursor: type: string nullable: true description: Opaque cursor for the next page; absent on the last page. total: type: integer nullable: true description: >- Total ranked rows when the read model exposes a count; may be absent. meta: $ref: '#/components/schemas/ResponseMeta' examples: success: summary: Successful response value: object: list data: [] has_more: false next_cursor: null meta: request_id: req_example cached: false '304': description: >- Not Modified. Returned when If-None-Match matches the current payload. headers: ETag: description: Validator for the unchanged payload. schema: type: string '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '402': $ref: '#/components/responses/SubscriptionRequired' '403': $ref: '#/components/responses/Forbidden' '408': $ref: '#/components/responses/RequestTimeout' '423': $ref: '#/components/responses/Locked' '429': $ref: '#/components/responses/RateLimited' '503': $ref: '#/components/responses/RateLimitUnavailable' x-codeSamples: - lang: curl label: cURL source: |- curl -sS \ -H 'Authorization: Bearer $OXI_SK' \ 'https://api.0xinsider.com/api/v1/large-positions?min_grade=A&limit=10' components: headers: ETag: description: >- Strong validator for conditional GET. Send as If-None-Match to receive 304 when unchanged. schema: type: string example: '"8f14e45fceea167a5a36dedd4bea2543"' X-RateLimit-Limit: description: Authenticated V1 per-user request limit for the current sliding window. schema: type: integer example: 100 X-RateLimit-Remaining: description: >- Authenticated V1 requests remaining in the current sliding window after this response. schema: type: integer example: 84 X-RateLimit-Reset: description: Unix timestamp when the authenticated V1 request window resets. schema: type: integer example: 1710772860 X-Request-Id: description: Server-generated request identifier for support and tracing. schema: type: string example: req_550e8400 schemas: LargePosition: type: object required: - id - platform - share_count - event_leg_count - first_seen_at - last_updated_at - trader - market properties: id: type: string description: Composite prefixed ID `pos_::`. platform: type: string enum: - polymarket - kalshi description: >- Provider discriminator. Always polymarket today (scanner is Polymarket-only); kept in the shape so Kalshi can land without a breaking change. total_size_usd: type: number nullable: true description: Aggregate provider currentValue for this position leg in USD. position_unrealized_pnl: type: number nullable: true description: >- Provider per-position unrealized P&L (trader_markets.unrealized_pnl_num, from Polymarket cashPnl). share_count: type: number description: Live share count for this position. avg_entry_price: type: number nullable: true description: Volume-weighted entry price. current_price: type: number nullable: true description: Latest provider mark price for the position's token. outcome_label: type: string nullable: true description: >- Backend-resolved outcome label (provider outcome, else Yes/No from the binary index). event_leg_count: type: integer description: >- Legs collapsed into this representative row for one (wallet, event, outcome side) group. 1 means standalone. event_total_value_usd: type: number nullable: true description: >- Aggregate provider currentValue across collapsed sibling legs; equals total_size_usd when event_leg_count = 1. first_seen_at: type: string format: date-time last_updated_at: type: string format: date-time trader: type: object required: - id - address properties: id: type: string description: Prefixed ID (`trd_...`). address: type: string username: type: string nullable: true grade: type: string enum: - S - A - B - C - D - F nullable: true win_rate: type: number nullable: true pnl: type: number nullable: true description: Trader lifetime realized P&L across all markets. markets_traded: type: integer nullable: true market: type: object required: - id - condition_id properties: id: type: string description: Prefixed ID (`mkt_...`). condition_id: type: string title: type: string nullable: true slug: type: string nullable: true event_slug: type: string nullable: true category: type: string nullable: true ResponseMeta: type: object required: - request_id - cached properties: request_id: type: string description: Unique request ID (req_ prefix). cached: type: boolean cache_age_s: type: integer nullable: true description: Cache age in seconds, null if not cached. ApiError: type: object required: - object - error - meta properties: object: type: string const: error error: type: object required: - code - message properties: code: type: string enum: - bad_request - invalid_api_key - subscription_required - forbidden - not_found - account_locked - rate_limited - rate_limit_unavailable - internal_error message: type: string doc_url: type: string nullable: true param: type: string nullable: true meta: $ref: '#/components/schemas/ResponseMeta' responses: BadRequest: description: Invalid request parameter content: application/json: schema: $ref: '#/components/schemas/ApiError' Unauthorized: description: Missing or invalid API key content: application/json: schema: $ref: '#/components/schemas/ApiError' SubscriptionRequired: description: Active Insider subscription required content: application/json: schema: $ref: '#/components/schemas/ApiError' Forbidden: description: Account access denied content: application/json: schema: $ref: '#/components/schemas/ApiError' RequestTimeout: description: >- Request exceeded the server's 30-second transport timeout. The timeout response has an empty body because it is generated before handler-level JSON error shaping. Locked: description: Account is locked content: application/json: schema: $ref: '#/components/schemas/ApiError' RateLimited: description: >- Rate limit exceeded (100 req/min; batch endpoints also reserve 100 batch item units/min before execution) headers: Retry-After: description: Seconds until rate limit resets. schema: type: integer X-RateLimit-Limit: schema: type: integer X-RateLimit-Remaining: schema: type: integer X-RateLimit-Reset: schema: type: integer X-Request-Id: schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' RateLimitUnavailable: description: >- Redis-backed authenticated rate limiter unavailable; retry after the per-process outage cooldown headers: Retry-After: description: >- Seconds until the middleware will probe the Redis-backed rate limiter again. schema: type: integer X-Request-Id: schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' securitySchemes: bearerAuth: type: http scheme: bearer description: >- API key: Authorization: Bearer oxi_sk_live_... for live data (requires an active Insider subscription), or oxi_sk_test_... for sandbox/test mode (free account, deterministic fixture data, no live rows). Both key classes use the same paths; the prefix selects live vs sandbox. ````