Skip to content

Person

Armin Ronacher

Python developer who created the Flask web framework and contributed to Jinja and Pygments, and who spent roughly a decade at Sentry.

Known aliases

  • Armin
  • mitsuhiko
  • @mitsuhiko
  • Ronacher

Current stories

buildOne report1 publisher

Pi 1.0 runs MCP tools inside a sandbox so their output stays out of context

Earendil's Pi 1.0 coding agent ships native MCP support after more than a year of criticising the protocol, running tool calls inside a WASM sandbox. The team credits a more stateless July 2026 spec and a sandbox it already needed for non-LLM models, so MCP support was a small addition.

Publishers:dev.to

Reality

Evidence40
Adoption35
Hype gap+20
Incentives40
Confidence40
buildOne report1 publisher

Armin Ronacher's unattended 35-hour GPT-6 Astra run wrote 75,000 lines of unusable code

Armin Ronacher let GPT-6 Astra code alone for 35 hours, spending about $1,200 on a net 75,000 lines of "absolutely nothing of value". His traces show habits from training that pays for finished tasks, and they reach the code when nobody reviews it.

Publishers:dev.to

Reality

Evidence55
Adoption
Not scored
Hype gap+20
Incentives35
Confidence50
buildOne report1 publisher

Pi runs the model's shell commands with the permissions of whoever launched it

A seven-part video walkthrough is packaging the Flask creator's Pi workflow for a general audience. The harness itself leaves isolation to the operator, and Earendil's own documentation says so plainly.

Publishers:runtimewire.com

Reality

Evidence66
Adoption18
Hype gap+22
Incentives66
Confidence55