> ## Documentation Index > Fetch the complete documentation index at: https://docs.testnet.dev.adipredictstreet.com/llms.txt > Use this file to discover all available pages before exploring further. # Optimistic-oracle challenges for a market > Read-only feed indexed from on-chain `challengeOutcome` events on the `Oracle` contract. Public — challenges are submitted as on-chain transactions; this endpoint only surfaces the indexed records. ## OpenAPI ````yaml /api-reference/openapi.json get /api/markets/{symbol}/challenges openapi: 3.1.0 info: title: PredictStreet API description: >- Client-facing HTTP API for the PredictStreet prediction-market platform. **Partner kinds.** Every authenticated endpoint resolves a request's *effective wallet* from the partner row. `single_wallet` partners bind to one `associatedWallet` set at creation. `multi_wallet` partners declare the actor on every request via an `X-User-Wallet: 0x<40-hex>` header. See the [Partner kinds](/auth/api-keys#partner-kinds) doc for the full contract. version: '2026-06-16' contact: name: PredictStreet partners email: partners@predictstreet.com servers: - url: https://core.api.dev.predictstreet.sde.adifoundation.ai description: Testnet (partner integrator API — final domain TBD) security: [] tags: - name: Deposits description: >- Gasless USDC deposit relay - submit a signed EIP-2612 permit and the platform broadcasts the on-chain deposit for you (no gas). - name: Events description: >- Polymarket-style event grouping with football metadata (group, stage, teams, tags). - name: Tags description: Curated tag taxonomy used to filter events. - name: Markets description: 'Public market data: list, detail, orderbook, trades, OHLC.' - name: Crypto description: >- Crypto price markets: the underlying-asset price curve and Up/Down series navigation. The markets themselves are ordinary binary markets — list them through /api/markets and /api/events. - name: Orders description: >- Signed-order place / cancel / read. Requires `X-Api-Key` with `orders:read` / `orders:write` scope; every write additionally requires an EIP-712 signature over the order. - name: Portfolio description: >- Balances, positions, trades, fees, vault info for the key's `associatedWallet`. Requires `X-Api-Key` with `portfolio:read` scope. - name: Matches description: >- A match groups several events into one fixture/card (1X2 + first-scorer + over-under under one matchup). - name: Vault description: >- Backend co-signatures for ERC-1155 split / merge, and recovery for off-chain locks when the corresponding chain tx never confirmed. Requires `X-Api-Key` with `vault:write` scope plus an EIP-712 signature over the operation. - name: Leaderboard description: Public ranked leaderboard across PnL / volume buckets. - name: Search description: Global search across users, events, and matches. - name: Withdrawal Security description: >- Self-service withdrawal 2FA (TOTP) and withdrawal-address whitelist. Same endpoints serve the web app (user sessions) and API-key integrators. Mutations need `vault:write`, reads `portfolio:read`. Both are opt-in per wallet and only gate withdrawals once the platform enables withdrawal-security enforcement. - name: Platform description: >- Public platform state: the contract registry, the platform fee configuration, the platform freeze flag and active notices. No authentication. paths: /api/markets/{symbol}/challenges: get: tags: - Challenges summary: Optimistic-oracle challenges for a market description: >- Read-only feed indexed from on-chain `challengeOutcome` events on the `Oracle` contract. Public — challenges are submitted as on-chain transactions; this endpoint only surfaces the indexed records. operationId: ChallengesController_listForMarket parameters: - name: symbol required: true in: path description: Public market symbol. schema: type: string - name: limit required: false in: query schema: type: integer minimum: 1 default: 50 - name: cursor required: false in: query description: Opaque cursor from a previous dispute-feed page. schema: type: string responses: '200': description: '' content: application/json: schema: $ref: '#/components/schemas/MarketChallengesRespDto' security: - {} components: schemas: MarketChallengesRespDto: type: object properties: symbol: type: string challenges: type: array items: $ref: '#/components/schemas/ChallengeDto' page: $ref: '#/components/schemas/ChallengesPageDto' required: - symbol - challenges - page ChallengeDto: type: object properties: id: type: string description: Challenge id (UUID). marketSymbol: type: string description: Market symbol the challenge targets. conditionId: type: string description: CTF conditionId being challenged (0x-bytes32). oracleProposedOutcome: type: string description: >- Outcome label the oracle had proposed when the challenge was filed (e.g. `YES`, `NO`, a team name). challengerWallet: type: string description: EOA that posted the challenge bond. bondAmount: type: string description: Bond amount staked on the challenge (decimal string, USDC). opensAt: type: string description: ISO-8601 — challenge window opens. closesAt: type: string description: ISO-8601 — challenge window closes (counter-evidence deadline). status: type: string enum: - PENDING - UPHELD - REJECTED - RESOLVED description: >- PENDING while undecided, then UPHELD, REJECTED or RESOLVED from the on-chain outcome. outcome: type: string nullable: true description: Final outcome after resolution; null while PENDING. rewardAmount: type: string nullable: true description: Reward paid to the challenger when overturning (decimal string). txHash: type: string nullable: true description: On-chain tx hash. createdAt: type: string updatedAt: type: string required: - id - marketSymbol - conditionId - oracleProposedOutcome - challengerWallet - bondAmount - opensAt - closesAt - status - outcome - rewardAmount - txHash - createdAt - updatedAt ChallengesPageDto: type: object properties: limit: type: number hasMore: type: boolean nextCursor: type: string nullable: true description: >- Opaque cursor for the next page; pass it back as `cursor`. Null on the last page. required: - limit - hasMore - nextCursor ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.