Polymarket API - Arbiter

These endpoints return raw Polymarket data directly from the Gamma API without normalization. Use them when you need platform-specific fields that the unified API strips out.

When to use native endpoints

Use case	Endpoint
Cross-platform dashboards, analytics	Unified API (`/v1/markets`)
Polymarket trading bots	Native API (`/v1/polymarket/markets`)
On-chain tracking, token operations	Native API (`/v1/polymarket/markets`)

Platform-specific fields

Field	Type	Description
`conditionId`	string	CTF condition ID (used for on-chain operations)
`clob_token_ids`	string[]	CLOB token IDs for Yes/No outcomes
`outcome_prices`	string	JSON-encoded outcome prices
`question`	string	Full market question text
`slug`	string	URL slug on polymarket.com
`tokens`	object[]	Token details with `token_id` and `outcome`
`neg_risk`	boolean	Whether market uses neg-risk framework

ID mapping

Every unified market with platform: "polymarket" has an ID formatted as poly_{condition_id}. Strip the poly_ prefix to get the condition_id for native endpoints.