> ## Documentation Index > Fetch the complete documentation index at: https://shield.fi/docs/llms.txt > Use this file to discover all available pages before exploring further. # Get pool oracle > Read an indexed pool oracle snapshot for a selected time window. ## OpenAPI ````yaml openapi.json GET /pools/{key}/oracle openapi: 3.1.0 info: title: Shield Swap API description: >- Shield Swap REST API for pools, positions, routes, quotes, and settlement status. Transactions target the configured shield_swap program and `token_registry.aleo`. ## Numeric wire format Exact financial values are JSON strings, not JSON numbers. Unsigned decimal inputs use ASCII digits and an optional `.` fraction, for example `"1234.50"`; base-unit integers use ASCII digits only. Grouping separators, localized decimal commas, signs, exponent notation, whitespace, Unicode digits, and redundant leading zeros are not accepted for those inputs. Signed response metrics may include a leading `-`. Clients should localize only for display and convert user input back to this canonical form before sending it. ## Authentication Most endpoints require credentials from a wallet that has accepted the current terms of use (recorded by `/auth/verify`). Public routes are `/health`, `/ready`, `/metrics`, `POST /auth/challenge`, `POST /auth/verify`, `/protocol/state`, `/compliance*`, `GET /tokens`, `GET /pools`, `GET /pools/stats`, `GET /pools/{key}`, `GET /pools/{key}/ohlcv`, `GET /pools/{key}/liquidity-distribution`, `GET /pools/{key}/trades`, `GET /pools/{key}/stats`, `GET /pools/{key}/oracle`, `GET /explore/*`, and `/geckoterminal/*`. Browsers use HTTP-only session cookies issued by `/auth/verify`. Access sessions last 15 minutes and are renewed through `/auth/refresh`. Programmatic clients use a long-lived token from `POST /api-tokens` as `Authorization: Bearer ss_…`. API tokens cover data and trading routes and can request WebSocket tickets. Token management, code redemption, and admin routes require a browser session. ## WebSocket feed The live feed runs on the separate websocket gateway at `GET /ws`. 1. Request a ticket from `GET /auth/ws-ticket` using a browser session or API token. 2. Open the socket and send the `authenticate` frame within 5 seconds. 3. Subscribe to each required room. 4. Before the 60-second ticket expires, request a new ticket and send another `authenticate` frame. The socket accepts WebSocket tickets only. Session JWTs and API tokens are rejected. ```json {"action": "authenticate", "token": ""} {"action": "subscribe", "room": "trades:"} {"action": "unsubscribe", "room": ""} {"action": "synchronize"} ``` After reconnecting, resend subscriptions and then send `synchronize`. The gateway replies `{"control": "synchronized"}` when those subscriptions are active. Refetch any REST data that depends on the stream after receiving the reply. Each connection allows 32 rooms, 240 client frames per minute, and 2 KB per frame. A client may subscribe only to the balance room for its ticket subject. Rooms: - `pool_launches`: newly created pools - `pool_stats:`: price & liquidity updates - `ohlcv:`: candle updates - `trades:`: swaps / mints / burns - `balances:
`: balance-change hints for an address - `protocol_config`: revisioned protocol-configuration invalidations Server messages are either events (`{"type": , "data": { … }}`) or control messages (`{"control": }`). Event types are `PoolLaunch`, `PoolStats`, `Ohlcv`, `Trade`, `BalanceChange`, and `ProtocolConfigChanged`. Its data contains `revision`, `observed_block`, and the changed `scope`/`key` pairs. Financial fields use the numeric format described above. Treat `ProtocolConfigChanged` as an invalidation, not as the new configuration. Fetch `GET /protocol/state?minimum_revision=`; retry a `503 protocol_revision_pending` after the advertised `Retry-After`; and discard or requote any `/route` result whose `protocol_revision` is older. Subscribe to `pool_stats:` separately when live price and liquidity updates matter. The gateway currently sends `synchronized` and `resync_required` controls. `resync_required` means the stream may have missed updates, so refetch affected data over REST. Ignore unknown control values. Event delivery is at most once. Treat REST as the source of truth. During a deployment the gateway may close the socket with code 1012 (service restart); reconnect and restore the subscriptions. contact: name: Shield Swap license: name: '' version: 0.1.0 servers: - url: https://api.swap.shield.fi description: Shield Swap mainnet API security: [] tags: - name: auth description: Wallet sign-in, sessions, logout, and WebSocket tickets - name: api-tokens description: >- Long-lived API tokens for programmatic access; send as `Authorization: Bearer ss_…` on any gated endpoint - name: referral description: >- Referral code redemption, attribution, activity logging, and administration - name: pools description: Pool metadata, stats, trades, OHLCV - name: positions description: LP positions - name: tokens description: Token registry - name: explore description: Market-wide token, pool, and transaction discovery - name: compliance description: Token/pair allowlist, pause, and pool-creation gating state - name: protocol description: Fee tiers and tick spacings - name: route description: Swap routing - name: unclaimed description: Pending swap outputs and position fees - name: geckoterminal description: Public GeckoTerminal integration data - name: airdrop description: >- Faucet: sends ALEO, USDCx, and ETH to a user address as records, once per address per 15 min - name: debug description: On-chain introspection helpers paths: /pools/{key}/oracle: get: tags: - pools summary: Get pool oracle operationId: get_pool_oracle parameters: - name: key in: path description: Pool key required: true schema: type: string - name: window_seconds in: query description: Oracle window in seconds required: false schema: type: integer format: int32 minimum: 0 responses: '200': description: Indexed pool oracle snapshot content: application/json: schema: $ref: '#/components/schemas/PoolOracleResponseDoc' '400': description: Invalid pool or window content: application/json: schema: $ref: '#/components/schemas/ErrorResponseDoc' '404': description: Pool not found content: application/json: schema: $ref: '#/components/schemas/ErrorResponseDoc' '409': description: Oracle history unavailable content: application/json: schema: $ref: '#/components/schemas/ErrorResponseDoc' '503': description: TWAP not deployed or source unavailable content: application/json: schema: $ref: '#/components/schemas/ErrorResponseDoc' components: schemas: PoolOracleResponseDoc: type: object required: - data properties: data: $ref: '#/components/schemas/PoolOracleResponse' ErrorResponseDoc: type: object required: - error properties: code: type: - string - 'null' error: type: string ref: type: - string - 'null' PoolOracleResponse: type: object required: - observed_block - epoch - activated_at - oldest_at - evaluated_at - paused - current_tick - current_liquidity - mean_tick - tick_variance - harmonic_liquidity - zero_liquidity_seconds - start_at - end_at - totals properties: activated_at: type: integer format: int64 current_liquidity: type: string current_tick: type: integer format: int32 end_at: type: integer format: int64 epoch: type: integer format: int32 minimum: 0 evaluated_at: type: integer format: int64 harmonic_liquidity: type: string last_trade_at: type: - integer - 'null' format: int64 mean_tick: type: integer format: int32 observed_block: type: integer format: int32 minimum: 0 oldest_at: type: integer format: int64 paused: type: boolean start_at: type: integer format: int64 tick_variance: type: string totals: $ref: '#/components/schemas/TradingTotalsResponse' zero_liquidity_seconds: type: integer format: int64 minimum: 0 TradingTotalsResponse: type: object required: - volume0 - volume1 - lp_fees0 - lp_fees1 - protocol_fees0 - protocol_fees1 - swaps properties: lp_fees0: type: string lp_fees1: type: string protocol_fees0: type: string protocol_fees1: type: string swaps: type: string volume0: type: string volume1: type: string ````