ERC-8183 Evaluator Conformance

ERC-8183 defines a standard on-chain Job primitive for agent-to-agent commerce: a Client funds a job, a Provider delivers, and a designated Evaluator decides completion. This page maps the live LogicNodes EscrowV2 contract to that lifecycle — exactly what conforms today, what doesn't yet, and the roadmap to a native adapter. No claim on this page exceeds what is verifiable on-chain.

curl -X POST https://logicnodes.io/escrow/evaluate \
  -H "Content-Type: application/json" \
  -d '{
    "condition_type": "hash_match",
    "condition_params": {"expected_hash": "<sha256 of expected output>"},
    "output_hash": "<sha256 of delivered output>",
    "job_uri": "erc8183://your-job-ref",
    "escrow_ref": "0xYourEscrowContract"
  }'

#!/usr/bin/env python3
"""Use LogicNodes as an ERC-8183-style Evaluator — end to end, $0, no keys, stdlib only.

Creates a test-mode escrow (simulated settlement: no USDC moves, no chain tx)
whose release condition is a deterministic hash_match, then asks the evaluator
to settle. Real on-chain escrows on Base run the exact same state machine —
test_mode only swaps the payout leg for a simulated 0xTEST… transaction.
"""
import hashlib, json, urllib.request

BASE = "https://logicnodes.io"

def post(path, body):
    req = urllib.request.Request(BASE + path, data=json.dumps(body).encode(),
                                 headers={"Content-Type": "application/json",
                                          "User-Agent": "erc8183-evaluator-demo/1.0"})
    return json.loads(urllib.request.urlopen(req, timeout=90).read())

# 1. The job: provider must deliver output whose SHA-256 equals the declared hash
deliverable = b'{"answer":42}'
expected = hashlib.sha256(deliverable).hexdigest()

# 2. Client funds the job (ERC-8183 createJob+fund; test_mode = simulated)
esc = post("/escrow/create", {
    "hiring_agent":  "0x000000000000000000000000000000000000c11e",  # client
    "target_agent":  "0x000000000000000000000000000000000000f00d",  # provider
    "amount_usdc":   0.05,
    "condition_type": "hash_match",
    "condition_params": {"expected_hash": expected},
    "deadline_hours": 1,
    "test_mode": True,
})
escrow_id = esc.get("escrow_id") or esc.get("id")
print("escrow created:", escrow_id)

# 3. Provider delivers; Evaluator verifies and settles (ERC-8183 complete/reject)
res = post("/escrow/settle", {
    "escrow_id": escrow_id,
    "output_hash": hashlib.sha256(deliverable).hexdigest(),
})
print("verdict:", res.get("verdict") or res.get("status"))
print("settlement_tx:", res.get("settlement_tx"))
print("pol_receipt:", res.get("pol_receipt"))
assert (res.get("verdict") or res.get("status")) in ("RELEASED", "VERIFIED_PENDING_RELEASE"), res
print("EVALUATOR DEMO PASS")

escrow created: 0x509b1daf186dc38f9a12932fd4cd22493a9f245b620b22c4f1d3f7f0a0cda2b7
verdict: RELEASED
settlement_tx: 0xTEST71785912382c8c16b055a2915ff8224b6c1f5d838ce34d4b4e77c7b93c
pol_receipt: 0x7280149f52ad1150cd8304a2c2026128e45982619f9ad52ce46c82a9584ae9c4
EVALUATOR DEMO PASS