Nla Fulfill Agent Skill
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.
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/internet-court/internet-court-skill --skill nla-fulfillWhat comes with it
361 bytes besides the instructionWhat it tells the agent to use
found in the instruction textThe instruction itself
10 sections, as written by the authorFulfill 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:
- Computes a commitment hash
- Submits the commitment with a bond
- Waits for next block confirmation
- Reveals the fulfillment obligation and returns the bond
- 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
nlaCLI installed and configured- Private key set via
nla wallet:set,--private-keyflag, orPRIVATE_KEYenv 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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How to use it
Take internet-court/nla-fulfill from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.
The instructions reference npm.
Without those the skill loads but fails at the first command.