historical?coin=string&timestamp=string

Historical USD price of a token at a specific past timestamp, by chain and contract address or coingecko id.

Historical USD price of a token at a specific past timestamp, by chain and contract address or coingecko id. For backtesting, accounting and cost-basis. Data an LLM cannot recall. historical price, price at timestamp, cost basis, backtest, token price history Accepts payment on Base or Solana — either network works.

UNRATEDListedProse in the URL

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.008 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x4466d4a8…d6dd125e

URL

https://api.x402node.dev/prices/historical?coin=string&timestamp=string

Seen

first 20 days ago · last 4 days ago

37 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC, Solana

Listed on?

Base, Solana

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.685 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.315: 0.115 uncertain ? + 0.200 short ? · 0.115 to B

How the composite of 0.685 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
liveness it answered at all	0.60	1.00	0.808		0.485	0	−0.115
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.685	gap to 1.000 = 0.315 · 0.200 short · 0.115 uncertain	0.685	−0.200	−0.115

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.000   latency p95    
+ 0.600 × 0.808   liveness       
+ 0.200 × 1.000   price stability
= 0.685           → UNRATED: 32 of 30 paid calls      weights 2026.09.6 · 32 samples · seed cap_01M2F742GDM2XP0QX6TZ4PPQE6|2026-09-01T00:04:22.995Z|2026.09.6

Verify it yourselfnpx teppi-check https://api.x402node.dev/prices/historical?coin=string&timestamp=stringcurl -s https://api.teppi.xyz/v1/trust/cap_01M2F742GDM2XP0QX6TZ4PPQE6