Fulfill NLA Escrow

Help the user fulfill an on-chain escrow by submitting text that satisfies the escrow's demand, then collect the tokens if approved.

Step-by-step instructions

1. Understand the escrow

Get the escrow UID from the user, then check what it demands:

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This shows:

• - The demand text
• Arbitration model and provider
• Oracle address
• Any existing fulfillments and their arbitration status

2. Craft the fulfillment

Help the user write fulfillment text that satisfies the demand:

• - Read the demand carefully
• The fulfillment text is what the AI arbitrator evaluates against the demand
• Be specific and directly address what the demand asks for
• The default arbitration prompt evaluates whether the "fulfillment" satisfies the "demand" and returns true/false

3. Submit the fulfillment

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This runs a multi-step on-chain commit-reveal flow:

1. 1. Computes a commitment hash
2. Submits the commitment with a bond
3. Waits for next block confirmation
4. Reveals the fulfillment obligation
5. Reclaims the bond
6. Requests arbitration from the oracle

The command outputs a fulfillment UID - record this for collection.

4. Monitor arbitration

Check if the oracle has made a decision:

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The oracle typically responds within seconds if it's running. Look for "APPROVED" or "REJECTED" in the output.

5. Collect tokens (if approved)

Once the oracle approves:

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This transfers the escrowed tokens to the fulfiller.

Key details

• - The fulfillment text is permanently recorded on-chain
• The commit-reveal process requires gas for multiple transactions
• If rejected, the tokens stay in escrow - another fulfillment attempt can be made by anyone
• The oracle address must match what was specified when the escrow was created (visible in status output)
• Collection only succeeds after the oracle records an approval

Prerequisites

• - nla CLI installed and configured
• Private key set via nla wallet:set, --private-key flag, or PRIVATE_KEY env var
• ETH in the fulfiller's account for gas
• The oracle must be running (or use the public demo on Sepolia)

Example full flow

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