Contract call simulation (eth_call) on 16 EVM chains: raw result, uint, address ...
https://saylorinnovations.com/api/chain/callOverview
Contract call simulation (eth_call) on 16 EVM chains: raw result, uint, address and string readings, any block, and a decoded revert reason on failure.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Saylor Innovations Data Desk
Source
bazaar
Indexed
2026-10-21 04:24:47
Health
Status
healthy
Latency (p50)
295ms
Uptime (30d)
100.0%
Reliability Score
95/100
Last Checked
2026-10-29 03:27:18
Last Healthy
2026-10-29 03:27:18
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"chain": "ethereum",
"data": "0x95d89b41",
"to": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
},
"type": "http"
}
Output Schema
{
"example": {
"as_address": null,
"as_string": "USDC",
"as_uint": null,
"block": "latest",
"chain": "ethereum",
"chain_id": 1,
"from": null,
"note": "Read-only simulation at latest: nothing is sent and no key is needed. The as_* fields are guesses at how to read the returned bytes, so check them against the function's ABI.",
"result": "0x000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000045553444300000000000000000000000000000000000000000000000000000000",
"result_bytes": 96,
"result_truncated": false,
"reverted": false,
"source": "Chain JSON-RPC (ethereum)",
"to": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-29 03:27:18 | healthy | 402 | 350ms | |
| 2026-10-29 02:14:54 | healthy | 402 | 297ms | |
| 2026-10-29 01:19:31 | healthy | 402 | 300ms | |
| 2026-10-29 00:18:26 | healthy | 402 | 239ms | |
| 2026-10-28 23:12:54 | healthy | 402 | 185ms | |
| 2026-10-28 22:18:29 | healthy | 402 | 276ms | |
| 2026-10-28 21:19:42 | healthy | 402 | 224ms | |
| 2026-10-28 20:17:20 | healthy | 402 | 238ms | |
| 2026-10-28 19:13:29 | healthy | 402 | 261ms | |
| 2026-10-28 18:17:50 | healthy | 402 | 270ms | |
| 2026-10-28 17:18:22 | healthy | 402 | 344ms | |
| 2026-10-28 16:15:54 | healthy | 402 | 334ms | |
| 2026-10-28 15:22:38 | healthy | 402 | 295ms | |
| 2026-10-28 14:17:17 | healthy | 402 | 572ms | |
| 2026-10-28 05:42:52 | healthy | 402 | 254ms | |
| 2026-10-28 04:44:59 | healthy | 402 | 368ms | |
| 2026-10-28 03:51:05 | healthy | 402 | 318ms | |
| 2026-10-28 02:51:44 | healthy | 402 | 309ms | |
| 2026-10-28 01:46:57 | healthy | 402 | 278ms | |
| 2026-10-28 00:40:34 | healthy | 402 | 287ms |