GET /epost.fcgi
Summary: Upload UID list to Entrez History server
Operation ID: epost
Auth: unknown
Operation ID: epost
Auth: unknown
Description
EPost posts a list of UIDs to the Entrez History server and returns a query key and Web environment for use in subsequent ESearch, ESummary, or EFetch calls.
Parameters (4)
WebEnv
(string, query, optional)
Web environment string from a previous ESearch, EPost or ELink call
api_key
(string, query, optional)
NCBI API key for higher rate limits
db
(string, query, required)
Database containing the UIDs
Constraints: {'enum': ['pubmed', 'protein', 'nuccore', 'ipg', 'nucleotide', 'structure', 'genome', 'annotinfo', 'assembly', 'bioproject', 'biosample', 'blastdbinfo', 'books', 'cdd', 'clinvar', 'gap', 'gapplus', 'grasp', 'dbvar', 'gene', 'gds', 'geoprofiles', 'medgen', 'mesh', 'nlmcatalog', 'omim', 'orgtrack', 'pmc', 'proteinclusters', 'pcassay', 'protfam', 'pccompound', 'pcsubstance', 'seqannot', 'snp', 'sra', 'taxonomy', 'biocollections', 'gtr']}
id
(string, query, required)
UID list (comma-delimited)
Examples (2)
| Title | Type | URL | Action |
|---|---|---|---|
| EPost PubMed IDs to History Server | curl |
https://eutils.ncbi.nlm.nih.gov/entrez/eutils/epost.fcgi?db=pubmed&id=33123456,33123457,33123458 |
|
| EPost Protein IDs to History Server | curl |
https://eutils.ncbi.nlm.nih.gov/entrez/eutils/epost.fcgi?db=protein&id=123456,123457 |
Probe History
Status Codes
| Time | Status | Latency | Size |
|---|---|---|---|
| 2026-03-23 10:23:06.363696 | 200 | 353ms | |
| 2026-03-23 09:41:58.276789 | 200 | 346ms |
Response Changes
| When | Old | New |
|---|---|---|
| 2026-03-23 10:23:06.363696 | 3f679f7a5658 |
ba46ccf4d063 |