Endpoint · evidenceGETapi.x402node.dev /citation/doi ?doi=string
Look up scholarly metadata for any DOI via CrossRef.
Read more
Look up scholarly metadata for any DOI via CrossRef. Returns title, authors, journal, publication date, abstract, citation count, references, license, URL. Use ?doi=10.1038/nature12373. Built for AI research agents doing literature review and citation graph traversal. Accepts payment on Base or Solana — either network works.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?
URL
https://api.x402node.dev/citation/doi?doi=string
Seen
first 34 days ago · last 4 days ago
63 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
RATED
0.733 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held back by sample size, not by the seller · gap to 1.000 is 0.267: 0.191 uncertain ? + 0.076 short ? · 0.067 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.62 | 0.000 | 0.000 | −0.076 | −0.124 | |
| liveness it answered at all |
0.60 | 1.00 | 0.888 | 0.533 | 0 | −0.067 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.733 | gap to 1.000 = 0.267 · 0.076 short · 0.191 uncertain | 0.733 | −0.076 | −0.191 |
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 × 0.888 liveness
+ 0.200 × 1.000 price stability
= 0.733 → UNRATED: 55 of 30 paid calls weights 2026.09.6 · 55 samples · seed cap_01M1A5QKQCMTTF4WB16VJ8FP71|2026-09-04T09:47:15.848Z|2026.09.6
Verify it yourself
npx teppi-check https://api.x402node.dev/citation/doi?doi=stringcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5QKQCMTTF4WB16VJ8FP71