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
10 of the last 10 checks
Median response
101 ms
Last checked
16 Oct, 23:40 UTC
In our index since
26 Sept 2026

Endpoint

curl -i https://api.onesource.io/api/chain/allowance
# 402 Payment Required: pay with a MPP client, then send the request again.
82 listed endpoints · on x402 Bazaar

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://api.onesource.io

  • GET/standard/v1/backing/history$0.02The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Backing-ratio history, joined against circulating supply as of each snapshot block. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.
  • GET/standard/v1/auctions/sales$0.02The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Auction sale history, newest first. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.
  • GET/api/chain/block-number$0.001Latest Ethereum block height - current chain tip via eth_blockNumber Also on mppscan
  • GET/standard/v1/supply/current$0.02The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Latest supply ledger: cumulative minted and burned totals, circulating supply, and max supply. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.
  • GET/api/chain/network-info$0.001EVM network info - chain ID, block height, gas price, chain head age, and chain characteristics in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice + latest block header) Also on mppscan
  • GET/standard/v1/policy/outlook$0.02The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. A current-pace projection of the Central Bank's policy multiplier and issuance rate if the current epoch's net flow direction holds until close. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.
  • GET/standard/v1/exit/fee-forecast$0.02The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. A current-pace projection of the reserve's exit fee assuming no further withdrawals, day by day until it reaches the minimum rate. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 7 of 82 listed endpoints. First endpoints

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

Recent checks

26 Sept 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.16 Oct 2026
All 10 checks
When (UTC)ResultHTTPResponse
16 Oct, 23:40 UTCChallenge detected402248ms
15 Oct, 19:10 UTCChallenge detected40299ms
14 Oct, 14:31 UTCChallenge detected402172ms
12 Oct, 15:35 UTCChallenge detected402110ms
10 Oct, 21:52 UTCChallenge detected40290ms
9 Oct, 15:32 UTCChallenge detected402103ms
8 Oct, 12:43 UTCChallenge detected40278ms
7 Oct, 09:33 UTCChallenge detected40270ms
6 Oct, 09:33 UTCChallenge detected402161ms
26 Sept, 17:02 UTCChallenge detected40292ms

Questions

Did our last probe detect a payment challenge?

At our last probe on 16 Oct, 23:40 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 26 Sept 2026.

Something wrong on this page? Tell us.