Discover / api.onesource.io

OneSource - Blockchain Data API for AI Agents

■ Challenge detected

ERC20 allowance via allowance (eth_call) - how much a spender is approved to move from an owner's wallet

Listed price
$0.003
Challenge detected
1 of the last check
Median response
152 ms
Last checked
14 Oct, 17:47 UTC
In our index since
14 Oct 2026

Endpoint

curl -i https://api.onesource.io/api/chain/allowance
# 402 Payment Required: pay with a MPP client, then send the request again.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/api.onesource.io

Recent checks

14 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.14 Oct 2026
All 1 checks
When (UTC)ResultHTTPResponse
14 Oct, 17:47 UTCChallenge detected402152ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 14 Oct, 17:47 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.

What price is recorded for OneSource - Blockchain Data API for AI Agents?

Its listed price is $0.003.

What payment terms does OneSource - Blockchain Data API for AI Agents advertise?

The listing advertises MPP, x402, Base, Tempo and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.

Where is OneSource - Blockchain Data API for AI Agents listed?

In x402 Bazaar, mppscan and x402-list.com. Superstables first indexed it on 14 Oct 2026.

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