Pre-trade GO / HOLD / BLOCK gate for an autonomous Base trading agent
Pre-trade GO / HOLD / BLOCK gate for an autonomous Base trading agent: pass token, side (buy|sell) and notional_usd; get a one-word decision plus reason in one fast call. Combines honeypot/sellability simulation, admin-control checks and Uniswap v3 WETH-pool liquidity vs. your trade size (price-impact guard).
Not tested: has real-world effectsour last check, 2026-10-19
0 of 0checks answered this week
n/amedian answer time
$0.008listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://x402-data-api.sigrunner.workers.dev/gate/swap
| Category | Market data |
|---|---|
| Provider host | x402-data-api.sigrunner.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"notional_usd": "500",
"side": "buy",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"notional_usd": {
"description": "intended trade size in USD (default 100)",
"type": "string"
},
"side": {
"description": "buy or sell (default buy)",
"type": "string"
},
"token": {
"description": "0x-prefixed ERC-20 contract on Base mainnet",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"decision": {
"type": "string"
},
"impact_pct_of_pool": {
"type": "number"
},
"liquidity_usd": {
"type": "integer"
},
"notional_usd": {
"type": "integer"
},
"reason": {
"type": "string"
},
"risk_score": {
"type": "integer"
},
"side": {
"type": "string"
},
"token": {
"type": "string"
}
},
"required": [
"token",
"side",
"notional_usd",
"decision",
"reason",
"risk_score",
"liquidity_usd",
"impact_pct_of_pool"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}