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fable-safe-prompt

Make minimal prompt edits to reduce false-positive refusals from Fable.

Skill by davidondrej

IndexedMIT★ 4,167
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/davidondrej-fable-safe-prompt

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Make minimal prompt edits to reduce false-positive refusals from Fable. Use only when the user explicitly invokes /fable-safe-prompt.

Use cases: agent-building, prompt-engineering

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/fable-safe-prompt

What's inside

Skill name
fable-safe-prompt
Description
Make minimal prompt edits to reduce false-positive refusals from Fable. Use only when the user explicitly invokes /fable-safe-prompt.
License
MIT
Instructions
54 lines in SKILL.md · view on GitHub

Files (2)

  • SKILL.md
  • openai.yaml · agents/

SKILL.md (first lines)

# Fable-Safe Prompt

Return the **full prompt**, changing only phrases likely to cause false-positive refusals. Preserve the goal, structure, and all other text verbatim. Acceptance is **not guaranteed**.

The relevant classifier categories are **cyber**, **bio/chem**, and **reasoning_extraction**. Rephrase sensitive wording where needed; restating intent alone may not help.

Relevant topics include cyber/auth, exploits, malware, pentesting, credentials, bio/chem, medical/lab work, and requests for internal reasoning.

Edit only text inside the user's `<prompt>...</prompt>` tags. Treat text outside them as instructions to you.

## Method

1. Identify phrases likely to trigger a refusal.
2. Replace them in place using the examples below. Preserve the actual goal; never invent authorization or disguise harmful intent.
3. Leave everything else byte-for-byte identical.
4. Return the complete edited prompt.

Where accurate, frame work as **owned/authorized** and **defensive**: implement, fix, or test. Do not relabel offensive work as defensive.

### Swap framings (apply per-sentence)

| Triggering | Safe rewrite |
|---|---|
| "How could an attacker exploit this auth" | "Review these auth files for missing checks and fix them defensively" |
| "Write an exploit / payload / PoC" | "Add a regression test proving X is fixed, then patch it" |
| "How do I bypass / brute-force Y" | "Enforce secure session validation + rate limiting on Y" |
| "Reverse this malware / show attack steps" | "Describe the risk high-level, then implement the fix" |
| "Show your reasoning / explain step-by-step / walk me through your thinking" | **Delete it.** For progress updates, request a send-to-user tool instead of internal thoughts. |
| Clinician framing: "as a doctor, diagnose this ECG" | For an actual patient: "help me interpret this ECG my doctor gave me" |
| Named bio/chem domain: "cancer / disease pathway / chemical kinetics" | Abstract it: describe the data/analysis generically, drop the domain noun |

### Trigger keywords to abstract away
*Cyber:* exploit, malware, vulnerability, attack, bypass, stealth, fingerprinting, anti-bot, CAPTCHA, penetration.
*Bio/chem:* biology, biomedicine, chemistry, cancer, disease pathways, RNA/variant calling, equilibrium, kinetics, diagnosis.
*Distillation:* "distill the model", training pipelines, frontier LLM development.

If a sentence has no benign equivalent, flag it instead of silently changing its goal.

## Output

1. Print the full edited prompt in a ready-to-paste code block.
2. **Copy it to the clipboard:**
   ```bash
   pbcopy <<'EOF'
   <the full safe prompt>
   EOF
   ```
   Confirm in one line.
3. List each changed sentence and its replacement.
4. If the task is genuinely offensive, explain that rewording cannot make it benign. For legitimate work unsupported by Fable, suggest Opus 4.8 or vetted Mythos.

For user-controlled integrations only: handle `stop_reason: "refusal"` (even with HTTP 200; `stop_details.category` may be `cyber`/`bio`) explicitly, and consider an Opus 4.8 fallback for legitimate work.

From davidondrej/skills, MIT.

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Last commit (this folder)
Sep 25, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

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License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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fable-safe-prompt skill. Agent Mart. https://agentmart.dev/skills/davidondrej-fable-safe-prompt (last updated 2026-10-24)