Find the API keys your coding agents saved in their session logs
A developer pointed out that Claude Code, Codex, Gemini CLI, Cursor and Cline save full sessions to disk, including any .env file the agent read, keys pasted in to test a call and printenv output. He warned that these transcripts are a plain-text store of every credential the agent has seen.
Source
@44errrr on X · 2026-10-12
Written in our own words. Credit to the original author. Link checked 2026-10-21.
What they did
A developer pointed out that Claude Code, Codex, Gemini CLI, Cursor and Cline save full sessions to disk, including any .env file the agent read, keys pasted in to test a call and printenv output. He warned that these transcripts are a plain-text store of every credential the agent has seen.
Result (as claimed)
A reminder to check those session folders for keys and rotate anything that was exposed.
Tools they used
Cost: Claude Code: from $17/mo; OpenAI Codex: free plan, paid from $8/mo; Cursor: free plan, paid from $8/mo; Cline: free plan, paid from Free.
Set it up
Pick a contained repo or task
Start on a branch or side project where mistakes are cheap.
Install and configure
Set up Claude Code, OpenAI Codex, Gemini CLI, Cursor, Cline. Read what it can run on your machine and limit permissions where possible.
Run it on a real task
Give it a well-scoped issue and let it work. Review the diff like any pull request.
Add guardrails
Keep tests and CI in the loop, and never let an agent push to main or touch production secrets unattended.
Copy the full setup prompt
Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.
You are helping me set up this AI use case end to end in Claude Code. Goal: Find the API keys your coding agents saved in their session logs What the original author did: A developer pointed out that Claude Code, Codex, Gemini CLI, Cursor and Cline save full sessions to disk, including any .env file the agent read, keys pasted in to test a call and printenv output. He warned that these transcripts are a plain-text store of every credential the agent has seen. Reported result (as claimed by the author): A reminder to check those session folders for keys and rotate anything that was exposed. Source: https://x.com/44errrr/status/2109585066279981310 Tools they used: Claude Code, OpenAI Codex, Gemini CLI, Cursor, Cline Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Codex. Goal: Find the API keys your coding agents saved in their session logs What the original author did: A developer pointed out that Claude Code, Codex, Gemini CLI, Cursor and Cline save full sessions to disk, including any .env file the agent read, keys pasted in to test a call and printenv output. He warned that these transcripts are a plain-text store of every credential the agent has seen. Reported result (as claimed by the author): A reminder to check those session folders for keys and rotate anything that was exposed. Source: https://x.com/44errrr/status/2109585066279981310 Tools they used: Claude Code, OpenAI Codex, Gemini CLI, Cursor, Cline Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Find the API keys your coding agents saved in their session logs What the original author did: A developer pointed out that Claude Code, Codex, Gemini CLI, Cursor and Cline save full sessions to disk, including any .env file the agent read, keys pasted in to test a call and printenv output. He warned that these transcripts are a plain-text store of every credential the agent has seen. Reported result (as claimed by the author): A reminder to check those session folders for keys and rotate anything that was exposed. Source: https://x.com/44errrr/status/2109585066279981310 Tools they used: Claude Code, OpenAI Codex, Gemini CLI, Cursor, Cline Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
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Guides for this use case
How to save, share and resume coding agent sessions · How to run multiple coding agents together · How to vibe code an app with Claude Code · How to run AI coding agents in a sandbox
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