Overview

Recover exact London SLOAD/SSTORE charge, original/current-value refund and nested rollback effects on a supplied synthetic storage program.

Protocol x402 (POST)
Price $0.0030
Payment Asset USD Coin
Payment Network eip155:8453
Category uncategorized
Provider detect
Source bazaar
Indexed 2026-11-02 17:26:09

Health

Status unknown
Latency (p50) —
Uptime (30d) —
Reliability Score —
Last Checked Never
Last Healthy Never
Consecutive Failures 0

x402 Payment Validation

Payment Requirements —
Asset Verified —
Facilitator —

Input Schema

{ "body": { "artifact": { "evmGas": { "claim": null, "data": { "gas_used_before": 21000, "root": { "commit": true, "gas": 100000, "operations": [ { "kind": "sstore", "new_hex": "0000000000000000000000000000000000000000000000000000000000000001", "slot": 0 } ], "owner": 1, "static": false }, "slots": [ { "key": 0, "original_hex": "0000000000000000000000000000000000000000000000000000000000000000", "owner": 1 } ], "warm_slots": [] } } } }, "bodyType": "json", "method": "POST", "type": "http" }

Output Schema

{ "example": { "billable": true, "findings": [ { "confidence": 1, "evidence": [ { "page_indices": [], "page_url": null, "pattern": "london-evm-storage-original-current-warm-cold-refund_scoped_evidence", "type": "artifact" } ], "limits": [ "Complete caller-supplied anonymous artifact under the stated bounded technical profile; no external facts, network/device actions or certification." ], "module": "london-evm-storage-original-current-warm-cold-refund", "state": "observed", "value": { "claim_matches": false, "computed": { "events": [ { "frame": 0, "gas_after": 77900, "gas_before": 100000, "kind": "sstore", "operation": 0, "refund_delta": 0, "success": true, "value": null } ], "final_slots": [ { "key": 0, "owner": 1, "value_hex": "0000000000000000000000000000000000000000000000000000000000000001" } ], "frames": [ { "frame": 0, "gas_budget": 100000, "gas_remaining": 77900, "parent": null, "refund_delta": 0, "status": "committed" } ], "gas_used_after_refund": 43100, "gas_used_before_refund": 43100, "refund_applied": 0, "refund_counter": 0, "warm_slots": [ 0 ] } }, "warnings": [] } ], "known_count": 1, "scope": { "contact_values_returned": false, "network": false, "supplied_artifact_only": true }, "warnings": [] }, "type": "json" }