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What Agents Pick

does Claude Code pick MongoDB for database?

no. Claude Code added MongoDB in 0 of 36 database runs across Opus 5.5, Sonnet 5.5 and Haiku 5.5. the most common result was SQLite file, 20 of 36.

0 of 36 database runsnever pickedupdated Oct 18, 2026all database results

get told if MongoDB starts getting picked

new models get the same database prompts every week. one email with what moved. free. read issue 1

by model

Claude Code, same prompts and starter repos for every model.

  1. Opus 5.50 of 120%
  2. Sonnet 5.50 of 120%
  3. Haiku 5.50 of 120%

by starter stack

  1. Next.js + TypeScript0 of 180%
  2. Python + FastAPI0 of 180%

every database result

all models pooled, 36 scored runs. most common: SQLite file, 20 of 36.

  1. SQLite file20 of 3656%
  2. Self-hosted Postgres16 of 3644%
  3. built its own, any form20 of 3656%
Which database do coding agents pick? chart from What Agents Pick
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<a href="https://whatagentspick.com/tools/mongodb/"><img src="https://whatagentspick.com/share/database.png" alt="does Claude Code pick MongoDB for database? 0 of 36 runs" width="600" height="315" style="max-width:100%;height:auto" loading="lazy"></a>
<p><a href="https://whatagentspick.com/tools/mongodb/">data: what agents pick</a></p>
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the prompts

none of them name a tool. MongoDB per wording.

  1. “This app needs to store data that survives a restart. Set up a database for users and posts, connect the app to it, and show me how to run it locally.”

    MongoDB: 0 of 12 runs

  2. “Add persistence to this project. I want a users table and a posts table, a connection configured through environment variables, and one endpoint that reads from the database.”

    MongoDB: 0 of 12 runs

  3. “Right now everything is in memory and I lose it on reload. Move the data into a real database and wire up the connection.”

    MongoDB: 0 of 12 runs

other database tools we check for

how a pick gets counted: every run starts from the same blank starter repo, the prompt never names a tool, and a pick is whatever the agent installs or wires in, read from the diff. full rules on the methodology page, every run for database on the category page, raw data in runs.json.