API Acre — Crossref DOI metadata enrichment
https://apiacre.com/v1/research/crossref-doi-metadataOverview
Resolve one DOI into normalized open Crossref bibliographic, author, container, citation-count, license, identifier, and correction or retraction-link metadata without abstracts or full text.
Protocol
x402 (POST)
Price
—
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
research
Provider
API Acre
Source
self-registered
Indexed
2026-08-29 19:24:38
Health
Status
healthy
Latency (p50)
108ms
Uptime (30d)
100.0%
Reliability Score
97/100
Last Checked
2026-09-02 19:52:43
Last Healthy
2026-09-02 19:52:43
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-09-02 19:52:43 | healthy | 402 | 131ms | |
| 2026-09-02 07:36:39 | healthy | 402 | 98ms | |
| 2026-09-01 23:24:27 | healthy | 402 | 108ms | |
| 2026-09-01 18:26:27 | healthy | 402 | 103ms | |
| 2026-09-01 11:56:37 | healthy | 402 | 150ms | |
| 2026-08-31 22:23:47 | healthy | 402 | 103ms | |
| 2026-08-31 21:25:27 | healthy | 402 | 121ms | |
| 2026-08-31 08:17:21 | healthy | 402 | 105ms | |
| 2026-08-31 03:49:59 | healthy | 402 | 115ms | |
| 2026-08-30 19:08:51 | healthy | 402 | 104ms |