Card grading guide
Card grading guide: is this card/coin/comic worth grading, and which service? Returns which grading service to use (PSA, BGS, CGC, PCGS, NGC), cost, turnaround time, and whether grading adds value for any collectible. Worldwide. For collector and investor agents.
Answeringour last check, 2026-10-18
1 of 1checks answered this week
1080 msmedian answer time
$0.08listed price per call
$0.08price 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://collectablespulse.theaslangroupllc.com/api/collect/grade
| Category | Market data |
|---|---|
| Provider host | collectablespulse.theaslangroupllc.com |
| Networks | algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k, eip155:137, eip155:143, eip155:196, eip155:42161, eip155:480, eip155:56, eip155:8453, eip155:999, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, xrpl:0 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | valid payment request | 402 | $0.08 | 1080 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"item": {
"description": "item",
"type": "string"
},
"lang": {
"description": "lang",
"type": "string"
},
"service": {
"description": "Preferred service (PSA|BGS|CGC|PCGS|NGC|etc)",
"type": "string"
}
},
"required": [
"item"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"errors": {
"additionalProperties": {
"properties": {
"description": {
"type": "string"
},
"example": {
"type": "object"
}
},
"required": [
"description"
],
"type": "object"
},
"description": "Documented error responses, keyed by HTTP status code",
"type": "object"
},
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}