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How to Track Polymarket TWAP Markets from Active to Resolved

Track a Polymarket TWAP market by combining Gamma status, CLOB book observations, its market-specific observation boundary, and resolution evidence—not by relying on one field or timestamp.
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To detect where a Polymarket TWAP market is in its lifecycle, combine its Gamma metadata, its current CLOB order-book state, the market’s scheduled observation boundary, and resolution evidence. Do not treat the end time, a closed flag, or an old price as proof on its own. Polymarket documents these data surfaces separately; the lifecycle labels below are an engineering model, not an official platform enum.

Which data sources show each part of the lifecycle?

Use each API for the evidence it is designed to provide, and retain the raw values and observation times. Gamma describes markets and their status; CLOB exposes current books and prices. Other layers can provide trading or on-chain context.

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Source Useful evidence What it does not establish by itself
Gamma API Market and event discovery, slugs, IDs, condition identifiers, outcome token identifiers, and status fields. The guide demonstrates filtering with active=true and closed=false, as well as lookup by slug. That a market is currently accepting orders, or that its outcome is final.
CLOB API Order books, prices, midpoint, spread, last trade price, price history, and the enableOrderBook field. That a missing or stale book means the market has resolved. Check the meaning and freshness of each observation.
Data API Trades, positions, and user data when trading context is needed. Market resolution solely from the existence or absence of trading activity.
Subgraph On-chain records such as positions, orders, trade events, redemptions, and open interest. A universal, real-time lifecycle status without interpreting the relevant records.

The documentation does not provide a universal timing or consistency guarantee between Gamma, CLOB, feeds, and resolution observations. Preserve when and where each signal was observed rather than collapsing them into one timestamp.

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How should a system model the lifecycle?

A practical internal sequence is discovered → active → approaching_boundary → closed_to_new_orders → awaiting_or_undergoing_resolution → resolved. These are application-defined states, not verified Polymarket labels. Keep the underlying evidence alongside the derived state so delayed or conflicting updates remain visible.

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Discovered

Find the market through Gamma and store stable identifiers: market ID, slug, condition identifier, and outcome token identifiers. Retain the relevant status fields and scheduled boundary information supplied for that market.

Active

Use Gamma’s active/closed metadata as a discovery and status signal, then inspect CLOB’s current order book and order-book availability. An active metadata flag is not a substitute for a current book observation.

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Approaching the observation boundary

Compare the current time with the market’s scheduled TWAP or observation boundary, using the actual market rules rather than assuming every market has the same window. This state is a warning that the observation period is near; it does not show that new orders have stopped or that resolution has occurred.

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Closed to new orders

Use current order-book and orderability evidence where available, alongside market metadata. A scheduled end time alone is insufficient. If metadata and CLOB disagree, represent the disagreement and refresh the relevant observations instead of silently choosing one as definitive.

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Awaiting or undergoing resolution

After order acceptance ends, treat resolution as a separate process. A market may have no active book while its outcome is not yet final. Use the market’s resolution state and relevant settlement evidence; do not infer this state from a stale last price.

Resolved

Mark a market resolved only when the applicable resolution evidence supports that conclusion. Keep the outcome and the source observation with the record, and distinguish confirmed resolution from an inferred or delayed status.

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How does the TWAP window affect detection?

The observation boundary depends on the market’s specific rules and duration. A community-posted announcement about crypto up/down markets says their resolution would move from a single snapshot price to TWAP-based resolution and lists these windows:

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Market duration named in the post TWAP window stated in the post
5 minutes 30 seconds
15 minutes 60 seconds
4 hours 60 seconds

These figures are claims in a community-posted announcement, not a guarantee for every TWAP market or a substitute for current market rules. The post names Chainlink Data Streams and Polymarket’s public Real-Time Data Streaming WebSocket as ways developers could consume TWAP prices. Verify current feed specifications, market coverage, and access behavior before relying on either feed operationally.

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What should you do when signals disagree?

  • Keep Gamma metadata, CLOB observations, feed data, and resolution evidence as separate fields with their own observation times.
  • Do not convert a scheduled boundary into a closed or resolved state without corroborating evidence.
  • Do not use active, closed, or enableOrderBook as a complete lifecycle verdict in isolation.
  • Refresh the source relevant to the disagreement and preserve the conflicting values for monitoring or audit.
  • Use trade, position, or on-chain records when the application needs evidence beyond current market metadata, while interpreting those records in context.

The Polymarket FAQ is another official reference point, but an implementation should follow the current rules and feed behavior for the specific market it tracks.

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