Boolean pre-flight check for L2 transaction safety across all 12 chains (?chain=
Boolean pre-flight check for L2 transaction safety across all 12 chains (?chain= param, default: base). Returns safe=true/false with reason code. Optimized for high-frequency agent calls before submitting transactions.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
265 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://rtt.phoenix-ai.work/api/v1/safe
| Category | Code and developer |
|---|---|
| Provider host | rtt.phoenix-ai.work |
| Networks | eip155:8453, hedera:testnet |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.01 | 265 ms |
Example input (from the provider)
{
"method": "GET",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"chain": {
"description": "Chain checked (default: base, supports all 12)",
"type": "string"
},
"p99_ms": {
"description": "Sequencer P99 RTT in milliseconds",
"type": "number"
},
"reason": {
"enum": [
"ok",
"elevated_revert",
"high_revert",
"sequencer_stall",
"data_stale"
],
"type": "string"
},
"revert_ratio": {
"description": "Base revert ratio (0.0-1.0)",
"type": "number"
},
"safe": {
"description": "true = safe to execute L2 transaction now",
"type": "boolean"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}