Describe a screen in plain English via `?q=` (e.g
Describe a screen in plain English via `?q=` (e.g. 'oversold large caps up today on high volume'). An LLM parses it into a filter, screens the entire US market, optionally confirms oversold/overbought with RSI, and returns a ranked shortlist with a one-line rationale per name. No need to know the filter schema or run the enrichment loop yourself. From x402stock
Answeringour last check, 2026-09-24
1 of 1checks answered this week
348 msmedian answer time
$0.2listed price per call
$0.2price 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://x402stock.xyz/api/v1/screener/smart
| Category | Market data |
|---|---|
| Provider host | x402stock.xyz |
| 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
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.2 | 348 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"q": "oversold large caps up today on high volume"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"q": {
"minLength": 1,
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"as_of": {
"type": "string"
},
"disclaimer": {
"type": "string"
},
"filter": {
"additionalProperties": false,
"properties": {
"limit": {
"type": "number"
},
"max_change_percent": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"max_price": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"min_change_percent": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"min_price": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"min_volume": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"order": {
"type": "string"
},
"signal": {
"type": "string"
},
"sort": {
"type": "string"
}
},
"required": [
"min_price",
"max_price",
"min_change_percent",
"max_change_percent",
"min_volume",
"sort",
"order",
"limit",
"signal"
],
"type": "object"
},
"interpretation": {
"type": "string"
},
"model": {
"type": "string"
},
"note": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"query": {
"type": "string"
},
"result_count": {
"type": "number"
},
"results": {
"items": {
"additionalProperties": false,
"properties": {
"change_percent": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"price": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"rationale": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"rsi": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"ticker": {
"type": "string"
},
"volume": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
}
},
"required": [
"ticker",
"price",
"change_percent",
"volume",
"rsi",
"rationale"
],
"type": "object"
},
"type": "array"
},
"sections": {
"additionalProperties": {
"type": "string"
},
"propertyNames": {
"type": "string"
},