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nla-fulfill

Submit text to satisfy an existing NLA escrow, an arrangement that holds tokens until requirements are met. Helps check the demand, prepare a response, monitor AI arbitration, and collect tokens after approval.

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Fulfill an existing NLA escrow and collect tokens. Use when the user wants to submit fulfillment text for an on-chain escrow, check arbitration results, and collect approved funds. Covers the full fulfill-arbitrate-collect lifecycle.

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适用场景

  • Checking an escrow's requirements
  • Preparing and submitting fulfillment text
  • Checking AI arbitration results
  • Collecting tokens after approval

包含的文件(2)

  • SKILL.md3.3 KB
  • LICENSE361 B

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

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:

nla escrow:status --escrow-uid <uid>

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

nla escrow:fulfill \
  --escrow-uid <escrow_uid> \
  --fulfillment "<fulfillment text>" \
  --oracle <oracle_address>

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

  1. Computes a commitment hash
  2. Submits the commitment with a bond
  3. Waits for next block confirmation
  4. Reveals the fulfillment obligation and returns the bond
  5. 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:

nla escrow:status --escrow-uid <escrow_uid>

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:

nla escrow:collect \
  --escrow-uid <escrow_uid> \
  --fulfillment-uid <fulfillment_uid>

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

# 1. Check what the escrow demands
nla escrow:status --escrow-uid 0xabc123...

# 2. Submit fulfillment
nla escrow:fulfill \
  --escrow-uid 0xabc123... \
  --fulfillment "The sky appears blue due to Rayleigh scattering" \
  --oracle 0x70997970C51812dc3A010C7d01b50e0d17dc79C8

# 3. Check arbitration result
nla escrow:status --escrow-uid 0xabc123...

# 4. Collect if approved
nla escrow:collect \
  --escrow-uid 0xabc123... \
  --fulfillment-uid 0xdef456...

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