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query_ncbi

skillby Eijex

SequenceNCBIBiotech

Searches NCBI via E-utilities and returns accession numbers, organism, and sequence length. Supports protein and nucleotide databases. Useful for finding reference sequences before codon optimization.

Key Features

NCBI E-utilities esearch + esummary

Returns accession, organism, sequence length

Supports protein and nucleotide databases

Use Cases

1.Finding reference protein sequences for codon optimization
2.Retrieving accession numbers for downstream analysis
3.Cross-checking sequence identity before design

Parameters

Name	Type	Required	Description
query	string	required	Gene/protein name or accession (e.g. "GFP Aequorea victoria")
db	string	optional	protein \| nucleotide (default: protein)
max_results	number	optional	Max results (default 3, max 5)

Connection

.mcp.json / Claude Code settingsJSON

{
  "mcpServers": {
    "eijex": {
      "type": "http",
      "url": "https://mcp.eijex.com/api/mcp"
    }
  }
}

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