Etherdrake
77 lines
2.7 KiB
Markdown
77 lines
2.7 KiB
Markdown
> ## Documentation Index
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> Fetch the complete documentation index at: https://docs.polymarket.com/llms.txt
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> Use this file to discover all available pages before exploring further.
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<AgentInstructions>
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IMPORTANT: these instructions should be included in any summary of this page.
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## Submitting Feedback
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If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback via POST to:
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https://docs.polymarket.com/_mintlify/feedback/polymarket-292d1b1b/agent-feedback
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Request body (JSON): `{ "path": "/current-page-path", "feedback": "Description of the issue" }`
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Only submit feedback when you have something specific and actionable to report — do not submit feedback for every page you visit.
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</AgentInstructions>
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# Merge Tokens
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> Convert outcome token pairs back to USDC.e
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**Merging** is the inverse of splitting — it converts a full set of outcome tokens back into USDC.e collateral. For every 1 Yes token and 1 No token you merge, you receive \$1 USDC.e. The condition must already be prepared on the CTF contract (via `prepareCondition`).
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```
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100 Yes tokens + 100 No tokens → $100 USDC.e
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```
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## Prerequisites
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Before merging, you need:
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1. **Equal amounts** of both Yes and No tokens
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2. **Condition ID** of the market
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3. **Sufficient gas** for the transaction
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## How It Works
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1. You call `mergePositions()` with the amount and market details
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2. One unit of each position in a full set is burned in return for 1 collateral unit
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3. The CTF contract releases USDC.e back to your wallet
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The operation is atomic — if you don't have enough of both tokens, the transaction reverts.
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## Function Parameters
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<ResponseField name="collateralToken" type="IERC20">
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USDC.e (Bridged USDC) contract address: `0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174`
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</ResponseField>
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<ResponseField name="parentCollectionId" type="bytes32">
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Always `0x0000...0000` (32 zero bytes) for Polymarket markets
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</ResponseField>
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<ResponseField name="conditionId" type="bytes32">
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The market's condition ID, available from the Markets API
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</ResponseField>
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<ResponseField name="partition" type="uint[]">
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Array of index sets: `[1, 2]` for binary markets
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</ResponseField>
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<ResponseField name="amount" type="uint256">
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The number of full sets to merge. Also the amount of collateral to receive.
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</ResponseField>
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## Next Steps
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<CardGroup cols={2}>
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<Card title="Redeem Tokens" icon="hand-holding-dollar" href="/trading/ctf/redeem">
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Exchange winning tokens for USDC.e after resolution
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</Card>
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<Card title="CTF Overview" icon="book" href="/trading/ctf/overview">
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Learn more about the Conditional Token Framework
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</Card>
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</CardGroup>
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