---
name: "Bio::DB::EUtilities::epost"
section: "3pm"
platform: "linux"
package: "bioperl"
version: "1.5.2.102-3"
release: "Debian 5.0 (Lenny)"
platforms: ["linux"]
url: "https://new.carta.tech/Bio::DB::EUtilities::epost"
---

# Bio::DB::EUtilities::epost(3pm)

Bio::DB::EUtilities::epost - posting IDs on the remote NCBI server for batch retrieval and chained queries

```
    my $epost = Bio::DB::EUtilities->new(
                                          -eutil    => 'epost',
                                          -id       => \@ids,
                                          -db       => 'protein',
                                          );
```

```
    $epost->get_response;
```

**WARNING**: Please do **NOT** spam the Entrez web server with multiple requests. The EUtility EPost is used to post a list of primary IDs to the NCBI EUtilities server for retrieval by EFetch or for using in futher searches using ELink or ESearch.  The data is posted using:

```
    $epost->get_response;
```

When not used in void context, this will also return a HTTP::Response object for further processing.  This is not necessary, as any posts made will automatically generate a Cookie, which can be used to retrieve the posted information using EFetch. Using EPost is recommended for retrieving large lists of primary IDs and is capable, when used repeatedly and in combination with EFetch, of retrieving thousands of database entries.  \
 **Parameters** The following are a general list of parameters that can be used to take advantage of EPost.  Up-to-date help for EPost is available at this URL (the information below is a summary of the options found there):

```
  http://eutils.ncbi.nlm.nih.gov/entrez/query/static/epost_help.html
```

The name of an Entrez database available through EUtilities.  a list of primary ID's

Below are a list of IDs which can be used with EPost:

**PMID** (pubmed), **MEDLINE UI** (NIH MedLine), **MIM number** (omim), **GI number** (nucleotide, protein), **MMDB-ID** (structure), **TAXID** (taxonomy)\
 **Mailing Lists** User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to one of the Bioperl mailing lists. Your participation is much appreciated.

```
  bioperl-l@lists.open-bio.org               - General discussion
  http://www.bioperl.org/wiki/Mailing_lists  - About the mailing lists
```

**Reporting Bugs** Report bugs to the Bioperl bug tracking system to help us keep track the bugs and their resolution. Bug reports can be submitted via the web.

```
  http://bugzilla.open-bio.org/
```

Email cjfields at uiuc dot edu The rest of the documentation details each of the object methods. Internal methods are usually preceded with a \_\
 **parse\_response**

```
 Title   : parse_response
 Usage   : $db->_parse_response($content)
 Function: parse out response for cookie
 Returns : empty
 Args    : none
 Throws  : 'unparseable output exception'
```