taxonomy-time-machine

https://taxonomy.onecodex.com

A web application and database for quickly browsing and comparing different versions of the NCBI taxonomy database.

Note

Archives Wanted! Archives of the NCBI taxonomy database only go as far back as 2014. However, we suspect that there are even older versions collecting dust on old HPCs, laptops, CD-ROMs and other ancient storage media. If you think you have an old copy of taxdump.tar.gz, even if you don't know where it's from, please send it to us (open a ticket)! You may be holding a valuable relic.

Setup

# install python dependencies
uv venv --seed
. venv/bin/activate
uv pip install

# front-end
npm install

# fetch data, create events.db
make

# start the backend
python app.py

# start the frontend
npm run dev

API Documentation

api/lineage

Return the taxonomic lineage for a given tax ID at a specific time

Parameters:

• tax_id (str)
• version_date (str) - ISO8601-formatted datetime string. If provided, the children of tax_id at the specific time will be returned. Otherwise, the current children will be returned

Example:

curl 'https://taxonomy.onecodex.com/api/lineage?tax_id=821&version_date=2014-10-22T00%3A00%3A00' | jq 
[
  ...
  {
    "event_name": "create",
    "name": "cellular organisms",
    "parent_id": 1,
    "rank": "no rank",
    "tax_id": 131567,
    "version_date": "2010-10-22T00:00:00"
  },
]

/api/search

Search all taxonomic events by a tax ID or partial name

Parameters:

• query (str): query (tax ID or name)

Example:

curl 'https://taxonomy.onecodex.com/api/search?query=bacteroides%20dorei%CAG' | jq 

[
  {
    "event_name": "create",
    "name": "Bacteroides dorei CAG:222",
    "parent_id": 139043,
    "rank": "species",
    "tax_id": 1263042,
    "version_date": "2014-08-01T00:00:00"
  }
]

api/events

Return taxonomic events given a Tax ID

Parameters:

• tax_id (str): query (tax ID)

Example:

curl 'https://taxonomy.onecodex.com/api/events?tax_id=821' | jq 

[
  {
    "event_name": "create",
    "name": "Bacteroides vulgatus",
    "parent_id": 816,
    "rank": "species",
    "tax_id": 821,
    "version_date": "2010-10-22T00:00:00"
  },
  ...
]

api/children

Return direct descendants for a given tax ID

Parameters:

• tax_id (str)
• version_date (str) - ISO8601-formatted datetime string. If provided, the children of tax_id at the specific time will be returned. Otherwise, the current children will be returned

Example:

curl 'https://taxonomy.onecodex.com/api/children?tax_id=1&version_date=2010-10-22T00%3A00%3A00' | jq 
[
  ...
  {
    "event_name": "create",
    "name": "Viroids",
    "parent_id": 1,
    "rank": "no rank",
    "tax_id": 12884,
    "version_date": "2010-10-22T00:00:00"
  },
]