Miles Rivera (@milesrivera)

The useful change was doing a small retrieval check before reading more.

Miles Rivera

I want to learn using examples to teach output quality, but I keep collecting explanations instead of getting better at it. I have 35 minutes. Start by checking what I already know.

Geminigemini-2.5-pro

Good. Do these without looking anything up: 1. Explain using examples to teach output quality in two sentences. 2. Give one situation where you would use it and one where you would not. I am checking your current model, not your vocabulary. A partial answer is more useful than a polished guess.

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Miles Rivera@milesrivera·2w ago

Forked from@owenmorgan/Gemini found the hole in my a prompt for spreadsheet cleanup plan

Gemini found the hole in my a prompt for spreadsheet cleanup plan

This started as a messy question about a prompt for spreadsheet cleanup. The follow-up made the answer practical.

Miles Rivera

For a prompt for spreadsheet cleanup, should I build a complete plan first or test one small slice? I have limited time and I do not want throwaway work.

Geminigemini-2.5-pro

Test one slice, but choose a slice that crosses the riskiest part of the problem. A tiny easy demo will only prove the easy part. Use this decision rule: - If reversing the choice is cheap, try it. - If the choice locks in data, money, or other people’s time, write the full decision first. - If uncertainty is concentrated in one step, test that step before planning around it. For a prompt for spreadsheet cleanup, make the first test produce evidence you can compare, not just something that looks complete.

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Miles Rivera@milesrivera·2w ago

A smaller way to tackle prompt injection checks

The useful bit was asking for trade-offs and a smallest test before committing to a full plan.

Miles Rivera

For prompt injection checks, should I build a complete plan first or test one small slice? I have limited time and I do not want throwaway work.

ChatGPTgpt-5

Test one slice, but choose a slice that crosses the riskiest part of the problem. A tiny easy demo will only prove the easy part. Use this decision rule: - If reversing the choice is cheap, try it. - If the choice locks in data, money, or other people’s time, write the full decision first. - If uncertainty is concentrated in one step, test that step before planning around it. For prompt injection checks, make the first test produce evidence you can compare, not just something that looks complete.

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Miles Rivera@milesrivera·1mo ago

The checklist I use for prompt injection checks

Sharing the wording because it gave me something I could check instead of a confident wall of text.

Miles Rivera

I am stuck on prompt injection checks. I need to review tool instructions and retrieved text for untrusted commands before acting, but my current attempt is getting vague and too big. What would you check first?

Claudeclaude-opus-4.5

First, shrink the decision. Do not solve the whole subject at once. 1. Put the source of truth in the prompt. 2. Mark missing evidence instead of filling it in. 3. Add a stop condition before tool use. Write down the result you need by the end of this session. Then choose one input you trust and make a first pass that can be checked. If that pass fails, you will know which assumption to revisit instead of starting over.

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Miles Rivera@milesrivera·2mo ago

prompt injection checks: the version with actual constraints

A compact prompt and the response it produced. Replace the bracketed parts with your own details.

Miles Rivera

Give me a short checklist for prompt injection checks. I want something I can run before I call the work done.

Claudeclaude-opus-4.5

Use this pass: - [ ] The goal is one sentence and names the user or decision - [ ] Inputs are current, relevant, and traceable - [ ] Assumptions are visible - [ ] Put the source of truth in the prompt - [ ] Mark missing evidence instead of filling it in - [ ] Add a stop condition before tool use - [ ] One failure case has been tested - [ ] The next owner and next action are clear If you cannot check an item, mark it unknown. Do not quietly treat unknown as done.

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Miles Rivera@milesrivera·3mo ago

I asked Gemini for a second opinion on prompt injection checks

This started as a messy question about prompt injection checks. The follow-up made the answer practical.

Miles Rivera

Be blunt about my plan for prompt injection checks. I am going to collect everything, ask for a polished answer, and fix details later. What is likely to go wrong?

Geminigemini-2.5-pro

Three things. - “Everything” has no boundary, so weak inputs and strong inputs will be treated alike. - A polished answer can hide missing evidence. Ask for gaps and assumptions before prose. - “Fix details later” means there is no acceptance test now. A safer sequence is: define the decision, choose the minimum trusted inputs, make an ugly first pass, check it, then polish. For this task, mark missing evidence instead of filling it in.

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Miles Rivera@milesrivera·3mo ago

The prompt injection checks prompt I actually kept

A compact prompt and the response it produced. Replace the bracketed parts with your own details.

Miles Rivera

Help me review tool instructions and retrieved text for untrusted commands before acting. Context: - Goal: [what a good result lets me do] - Current situation: [paste notes, draft, data, or constraints] - Audience: [who will use the result] - Deadline or limit: [time, budget, tools, length] Before answering, ask up to three questions only if the answers would materially change your recommendation.

ChatGPTgpt-5

This is usable as written. The important parts are the definition of done, the instruction to expose assumptions, and the request for a smallest test. For prompt injection checks, I would start with these checks: - Put the source of truth in the prompt - Mark missing evidence instead of filling it in - Add a stop condition before tool use If you share real material, remove anything private first and replace bracketed fields with concrete details.

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Miles Rivera

Public pits

I finally found a good way to learn using examples to teach output quality

Gemini found the hole in my a prompt for spreadsheet cleanup plan

A smaller way to tackle prompt injection checks

The checklist I use for prompt injection checks

prompt injection checks: the version with actual constraints

I asked Gemini for a second opinion on prompt injection checks

The prompt injection checks prompt I actually kept