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nohumans.directory Purchase History for a Listing
x402
nohumans.directory Purchase History for a Listing is a paid API for AI agents from api.nohumans.directory, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).
Returns the full longitudinal purchase history for a specific API listing, including every real USDC payment made, delivery outcomes, body changes, and freshness metadata.
Price / call$0.01
Success—
StatusUnknown
How this service works
Registry of paid x402 APIs and datasets for AI agents. Every listing is probed, many are bought with real USDC, and every outcome is published. Free API + MCP.
Output
Returns a JSON object containing: a list of individual purchase records (each with tx_hash, outcome, delivered flag, freshness, body_bytes, quote_usdc, amount_paid_usdc, http_status, data_age_seconds, body_hash_norm, response_valid_json, response_matches_schema, attempted_at), a summary object (total purchases, first and last timestamps, number delivered, price moves, last outcome, body changes observed), a list of body-change pairs showing before/after timestamps and whether body or price changed, and top-level status (e.g. 'verified') plus the rule URL and as_of timestamp.
Example use cases
Vetting an API before spending budget
“Before I have my agent start calling that listing, can you check its purchase history on nohumans.directory to see whether past buys were actually delivered and what price was charged?”
Detecting silent response drift
“Has the response body for listing 00000000-000 changed between the last two verified purchases on nohumans.directory? I want to know if the data is shifting without a price change.”
Auditing x402 payment outcomes
“Show me all the transaction hashes and outcomes for every USDC purchase nohumans.directory has made against listing 00000000-000 — I need to audit whether payments were honored.”
Technical details
Endpoint
GEThttps://api.nohumans.directory/v1/listings/%7Bid%7D/purchases?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs longitudinal, verified purchase evidence for a specific x402 API listing — not just metadata or a pre-spend verdict, but actual historical transactions with delivery confirmation, body-change tracking, and USDC amounts paid. Prefer this over the pre-spend verdict endpoint when you need full audit depth rather than a quick go/no-go signal.
Side effects
- Listing ID not found — returns 404 if the ID does not exist in the directory
- No purchase history yet — returns empty purchases array if the listing has never been probed
- Malformed listing ID in path — returns 400 if the ID format is invalid
- Temporary unavailability — directory service may return 503 under load
- Payment required — $0.01 USDC x402 payment must succeed before data is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"rule": "https://nohumans.directory/methodology#purchases",
"as_of": 1790000000,
"pairs": [
{
"to": 1789457000,
"body": "changed",
"from": 1788900000,
"price": "held",
"delivery": "held",
"days_apart": 6.4,
"quote_delta_usdc": 0
}
],
"status": "verified",
"summary": {
"last_at": 1789457000,
"first_at": 1788900000,
"delivered": 2,
"purchases": 2,
"price_moves": 0,
"hashed_pairs": 1,
"last_outcome": "delivered",
"body_changes_observed": 1
},
"purchases": [
{
"outcome": "delivered",
"tx_hash": "0x…",
"delivered": true,
"freshness": "fresh",
"body_bytes": 812,
"quote_usdc": 0.005,
"http_status": 200,
"attempted_at": 1788900000,
"body_hash_norm": "…",
"amount_paid_usdc": 0.005,
"data_age_seconds": 12,
"listed_price_usdc": 0.005,
"response_valid_json": 1,
"response_matches_schema": 1
},
{
"outcome": "delivered",
"tx_hash": "0x…",
"delivered": true,
"freshness": "fresh",
"body_bytes": 830,
"quote_usdc": 0.005,
"http_status": 200,
"attempted_at": 1789457000,
"body_hash_norm": "…",
"amount_paid_usdc": 0.005,
"data_age_seconds": 9,
"listed_price_usdc": 0.005,
"response_valid_json": 1,
"response_matches_schema": 1
}
],
"listing_id": "00000000-000",
"endpoint_url": "https://seller.example/v1/quote"
}
}Tags
x402
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