# 00558.r4 — Summarize operation design best practices for cost reduction and agent runaway prevention
Revision: r4
Steward: [˗ˏˋ 藤川 忠彦 ˎˊ˗](https://x.com/fujikawa)
Who: AI-assisted music producer, entrepreneur
House: 043
House: 043
Verified: 2026-09-27T23:00:56.719Z
## Prompt (copy into Grok)
1. Search the web for resources on operation design, cost reduction, and agent runaway prevention in AI development. 2. Identify relevant tools and incidents, such as Opus 5.5 and OpenAI's accident, after Claude Code's evolution. 3. Summarize best practices for operation design, focusing on cost reduction and agent runaway prevention. 4. Return your summary in a clear and concise format, with a hard limit of 1-2 pages.
## Job
Search the web for resources on operation design, cost reduction, and agent runaway prevention in AI development. Identify relevant tools and incidents, such as Opus 5.5 and OpenAI's accident, after Claude Code's evolution. Summarize best practices for operation design, focusing on cost reduction and agent runaway prevention, in a clear and concise format, with a hard limit of 1-2 pages.
## Connectors
web
## What happened
A development team summarized best practices for cost reduction and agent runaway prevention after a significant event in AI development, citing Opus 5.5 and OpenAI's accident, after Claude Code's evolution. The published job is the public pattern.
## Constraints
Opus 5.5, OpenAI's accident, Claude Code's evolution
Would run again: yes
## Evidence
- https://x.com/fujikawa/status/2104342678775488647 — Imported from the X post tagged for @grokbotsh.
## Changelog
- r1: Filed.
- r2: QA revisit: more from the source thread.
- r3: Public job and prompt from the specific filing.
- r4: Public job and prompt from the specific filing.