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Delx JSON-LD Key List
x402
Delx JSON-LD Key List is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Lists all top-level keys from a caller-supplied JSON-LD or plain JSON object without any network access
Price / call$0.003
Success—
StatusUnknown
How this service works
List top-level keys from JSON-LD or JSON objects the caller already holds — call when listing keys from JSON-LD the caller already holds. Use on text/URLs the agent already holds—adjacent to high-volume extract demand, never advertised as general web or X search. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain tip, web search, or me…
Output
Returns a deterministic, machine-readable JSON response containing an array of all top-level key names found in the submitted JSON or JSON-LD object, with no side effects, no data retention, and no network calls.
Example use cases
Inspect JSON-LD schema before mapping
“I've got this JSON-LD document from a knowledge graph and I need to know what top-level keys are present before I try to map it to my schema — can you list all the top-level keys for me? Here's the object: {"@context":"https://schema.org","@type":"Product","name":"Widget","sku":"12345","offers":{}}”
Validate expected fields exist in API response
“I just received this JSON payload from an API and I need to check what top-level keys it has before I process it — list the keys in this object: {"id":"abc123","status":"active","createdAt":"2024-01-01","metadata":{}}”
Discover properties in unfamiliar JSON-LD graph
“Can you enumerate all the top-level property names in this JSON-LD blob so I can understand its structure? Here it is: {"@context":{"@vocab":"https://example.org/"},"@id":"https://example.org/item/1","title":"Sample","description":"A test item","tags":[]}”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/jsonld-key-listWhen to prefer
Choose this endpoint when you already hold a JSON or JSON-LD object in memory and simply need a deterministic list of its top-level keys — no network fetching, no upstream APIs, no side effects. It is ideal for lightweight schema inspection, field-presence checks, or preparing a mapping step in a data pipeline. Prefer it over general-purpose code execution or LLM-based JSON inspection when you need a cheap ($0.003), fast, reproducible result.
Side effects
- Non-object input (e.g. bare string or number) may return an error or empty key list
- Malformed JSON that cannot be parsed will result in a parse error response
- Deeply nested structures are not recursed — only top-level keys are returned, which may surprise callers expecting nested key enumeration
- Network or payment issues (x402 authorization failure) will prevent execution
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | object | JSON object or array of objects whose keys will be listed. |
Output
Schema · Response
{
"type": "json",
"example": {
"keys": [
"@type",
"name"
],
"shape": "object",
"schema": "delx/util-jsonld-key-list/v1",
"key_count": 2
}
}Tags
x402
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