Saylor Innovations Data Desk
US amateur radio callsign lookup - licence class, status, grant and expiry dates, licensee name and grid square from the FCC database
Offering
- Provider
- saylorinnovations.com
- Method
- GET
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Legal And Compliance
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://saylorinnovations.com/api/radio/callsign/:call- MIME type
- Not provided
- First seen
- 2026-10-16T01:59:13.392Z
- Last seen
- Tags
- ham radio callsign lookup, amateur radio licence, fcc callsign, callsign validity, operator class
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact - Payment option 2
- 0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa"
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "10000",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7"
}
]Observed health
- Status
- Reachable
- Latest latency
- 468 ms
- Average latency
- 682 ms
- HTTP status
- 400
- Last checked
- Reachability
- 100% over 13 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"pathParams": {
"properties": {
"call": {
"description": "US amateur radio callsign in the path, e.g. W1AW",
"type": "string"
}
},
"required": [
"call"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"pathParams"
],
"type": "object"
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"pathParams": {
"properties": {
"call": {
"description": "US amateur radio callsign in the path, e.g. W1AW",
"type": "string"
}
},
"required": [
"call"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"pathParams"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"callsign": {
"description": "Aircraft callsign",
"type": "string"
},
"city": {
"description": "City",
"type": [
"string",
"null"
]
},
"expiry_date": {
"description": "Expiry date",
"type": [
"string",
"null"
]
},
"frn": {
"type": [
"string",
"null"
]
},
"grant_date": {
"description": "Grant date",
"type": [
"string",
"null"
]
},
"grid_square": {
"description": "Grid square",
"type": [
"string",
"null"
]
},
"last_action_date": {
"description": "Last action date",
"type": [
"string",
"null"
]
},
"licence_type": {
"description": "Licence type",
"type": [
"string",
"null"
]
},
"licensee": {
"type": [
"string",
"null"
]
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"operator_class": {
"description": "Operator class",
"type": [
"string",
"null"
]
},
"previous_callsign": {
"description": "Previous callsign"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"state": {
"description": "State or region",
"type": [
"string",
"null"
]
},
"status": {
"description": "Current status",
"type": "string"
},
"trustee": {
"type": [
"string",
"null"
]
},
"trustee_name": {
"description": "Trustee name",
"type": [
"string",
"null"
]
},
"uls_url": {
"description": "Uls URL",
"type": [
"string",
"null"
]
},
"zip": {
"type": [
"string",
"null"
]
}
},
"required": [
"callsign",
"status"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}