GET /efetch.fcgi
Summary: Fetch full records
Operation ID: eFetch
Auth: unknown
Operation ID: eFetch
Auth: unknown
Description
Returns full data records in the requested format.
Parameters (14)
WebEnv
(string, query, optional)
Web environment string
complexity
(integer, query, optional)
Complexity level for genomic data
Constraints: {'enum': [0, 1, 2, 3, 4]}
db
(string, query, required)
Database (use 'pmc' for PubMed Central)
Constraints: {'enum': ['pmc', 'pubmed', 'pmcbooks']}
email
(string, query, optional)
Email address for contact
id
(string, query, optional)
Comma-separated list of UIDs
query_key
(string, query, optional)
Query key from previous search
retmax
(integer, query, optional)
Maximum number of results
retmode
(string, query, optional, default: xml)
Return mode
Constraints: {'enum': ['xml', 'text', 'html', 'asn.1']}
retstart
(integer, query, optional)
Index of first result
rettype
(string, query, optional)
Retrieval type (e.g., abstract, medline, full, fasta)
seq_start
(integer, query, optional)
Start position for sequence
seq_stop
(integer, query, optional)
Stop position for sequence
strand
(integer, query, optional)
Strand for sequence data (1 or 2)
Constraints: {'enum': [1, 2]}
tool
(string, query, optional)
Tool name for logging
Examples (3)
| Title | Type | URL | Action |
|---|---|---|---|
| Fetch single article by PMC ID in XML | curl |
https://www.ncbi.nlm.nih.gov/pmc/efetch.fcgi?db=pmc&id=13900&retmode=xml |
|
| Fetch multiple articles by PMC IDs | curl |
https://www.ncbi.nlm.nih.gov/pmc/efetch.fcgi?db=pmc&id=13900,13901,13902&retmode=xml&rettype=full |
|
| Fetch article with MEDLINE format | curl |
https://www.ncbi.nlm.nih.gov/pmc/efetch.fcgi?db=pmc&id=325237&retmode=text&rettype=medline&email=user@example.com&tool=robustapi |
Probe History
Status Codes
| Time | Status | Latency | Size |
|---|---|---|---|
| 2026-03-23 10:48:07.251679 | 404 | 511ms | |
| 2026-03-23 09:50:45.381866 | 404 | 508ms | |
| 2026-03-23 09:13:53.625542 | 404 | 512ms |
Response Changes
| When | Old | New |
|---|---|---|
| 2026-03-23 09:50:45.381866 | 92c3d2918fbd |
bb70dae3a2f5 |
| 2026-03-23 10:48:07.251679 | bb70dae3a2f5 |
6293f0598873 |