Stacks/Coding agent

Stripe Minions

Stripe's Minions are unattended coding agents that, as of this post, produce more than 1,300 human-reviewed PRs a week. They run on the same isolated EC2 devboxes humans use, on a harness forked from Block's goose, driven by blueprints that mix deterministic lint/CI/git steps with agent nodes. A centralized MCP server, Toolshed, exposes nearly 500 internal tools; minions get a curated subset, with a security-control framework blocking destructive actions.

Use case

Unattended end-to-end coding agents at Stripe. Over 1,300 merged pull requests each week are completely minion-produced and human-reviewed, with no human-written code in those PRs

Category

Coding agent

Team size

not stated

Orchestrator / framework

Minions run on Stripe's standard AWS EC2 'devbox' developer environments, provisioned from a warm pool that aims to be ready in about 10 seconds. The agent harness is a Stripe-customized fork of Block's goose, orchestrated by 'blueprints': code-defined workflows that intermix deterministic nodes (lint, push, run configured linters) with agent-loop nodes (implement the task, fix CI failures). After a push, the standard blueprint runs CI, applies autofixes, and gives the minion one more chance to fix remaining failures before handing the branch to a human. Cursor and Claude Code are also available to Stripe engineers for supervised work.

Memory

not stated as a separate memory product. Context is gathered from repo rule files (including Cursor rules synced into a format Claude Code can read) and from MCP tools.

Evals

not stated as a formal eval suite. Reliability work described is structural: deterministic blueprint nodes, limited CI rounds, and local lint before push.

Observability

not stated

Monthly cost

not stated

Models

not stated

Observability tools

not stated

Other tools

AWS EC2 devboxesBazel and type-checking cachesToolshed (internal MCP server with nearly 500 tools)MCPQA-environment isolation (no production data or arbitrary egress)

Source

https://stripe.dev/blog/minions-stripes-one-shot-end-to-end-coding-agents-part-2

Stripe Engineering (Minions series, part 2)