{"uid":"cap_s_yt3TJOv2EbLXy3lDpOi","slug":"aisa-mpp-data-apis-polymarket-fee-rate-lookup-5b05b1c2","name":"Polymarket Fee Rate Lookup","description":"Retrieves the base fee rate for a specific token ID. The fee rate can be provided either as a query parameter or as a path parameter.\n\n<!-- aisa-pricing:start -->\nPublished reference price: $0.012 USD per successful request. Account-specific pricing and final settlement may differ.\n<!-- aisa-pricing:end -->","url":"https://api.aisa.one/apis/v1/polymarket/fee-rate?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"token_id":{"type":"string","description":"Token ID (asset ID)"}}},"responseSchema":{"type":"object","required":["base_fee"],"properties":{"base_fee":{"type":"integer","format":"int64","example":30,"description":"Base fee in basis points"}}},"example":null,"exampleRequest":null,"tags":["web-search","financial-data","prediction-markets","weather","travel","data","search"],"displayCostAmount":"0.012","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.012/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.012","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.012","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Nh2WOg9PkX_WcY7ee7xgR","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.012","costPer":"request","priority":0,"asset":"0x20C000000000000000000000b9537d11c60E8b50","unit":"request","depositMicros":null,"planRef":null}],"brandName":"AIsa MPP Data APIs","brandSlug":"aisa-mpp-data-apis-mpp","brandBaseUrl":"https://aisa.one","brandDocsUrl":null,"whatItDoes":"Retrieves the base fee rate (in basis points) for a specific Polymarket token/asset ID.","exampleAgentPrompt":"What's the base fee rate for the Polymarket token with ID 0x1234abc? I want to know how many basis points I'll be charged before I trade.","exampleUseCases":[{"title":"Pre-trade fee check for a position","prompt":"Before I buy into this Polymarket market, can you pull the base fee rate for token ID 71321045679252212594626385532706912750332728571942532289631379312455583992563? I want to factor it into my cost calculation."},{"title":"Comparing fees across multiple tokens","prompt":"I'm considering trading a few different Polymarket assets. Can you check the base fee rate for token ID 52114319501245915516055106046884209969926127482827954674443846427813813222426 so I can compare costs?"},{"title":"Automated trading bot fee verification","prompt":"My trading bot needs to verify the current base fee in basis points for Polymarket token 21742633143463906290569050155826241533067272736897614950488156847949938836455 before executing a trade — can you fetch that for me?"}],"resultDescription":"Returns a JSON object containing `base_fee`, an integer representing the base fee rate in basis points (e.g., 30 = 0.30%) that Polymarket charges for trading the specified token.","failureModes":["Missing or invalid token_id returns an error response","Token ID not found on Polymarket returns a not-found error","Network timeout or upstream Polymarket API unavailability","Malformed token_id string causing a parsing error"],"whenToPreferThis":"Use this endpoint when you need to look up the exact trading fee for a specific Polymarket token before executing or analyzing a trade, or when building tools that calculate net returns or costs on prediction market positions. Prefer this over scraping Polymarket's frontend or using general financial data APIs that don't cover prediction market fee structures.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:50:05.014Z","isFirstParty":false,"canonicalSlug":"aisa-mpp-data-apis-polymarket-fee-rate-lookup-5b05b1c2"}