Install the "fable-safe-prompt" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/fable-safe-prompt into .claude/skills/fable-safe-prompt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fable-safe-prompt", then confirm the skill loads.
Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
skills CLI
$ npx skills add sickn33/agentic-awesome-skills --skill fable-safe-prompt -a codex
Project install goes to .agents/skills/; add -g for ~/.codex/skills/.
Install the "fable-safe-prompt" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/fable-safe-prompt into .agents/skills/fable-safe-prompt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fable-safe-prompt", then confirm the skill loads.
Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
skills CLI
$ npx skills add sickn33/agentic-awesome-skills --skill fable-safe-prompt -a cursor
Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.
Install the "fable-safe-prompt" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/fable-safe-prompt into .cursor/skills/fable-safe-prompt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fable-safe-prompt", then confirm the skill loads.
Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
skills CLI
$ npx skills add sickn33/agentic-awesome-skills --skill fable-safe-prompt -a gemini-cli
Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.
Install the "fable-safe-prompt" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/fable-safe-prompt into .gemini/skills/fable-safe-prompt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fable-safe-prompt", then confirm the skill loads.
Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
skills CLI
$ npx skills add sickn33/agentic-awesome-skills --skill fable-safe-prompt -a github-copilot
Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.
Install the "fable-safe-prompt" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/fable-safe-prompt into .github/skills/fable-safe-prompt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fable-safe-prompt", then confirm the skill loads.
GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
skills CLI
$ npx skills add sickn33/agentic-awesome-skills --skill fable-safe-prompt -a opencode
OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
Install the "fable-safe-prompt" agent skill from https://github.com/sickn33/agentic-awesome-skills/tree/main/skills/fable-safe-prompt into .opencode/skills/fable-safe-prompt/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fable-safe-prompt", then confirm the skill loads.
OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
Skill name
fable-safe-prompt
GitHub stars
47k
Used in
1 other repo
Token cost
~1.3k tokens
SKILL.md length
614 words
Files
1
Skills in repo
1,493
Repo updated
First seen
Licence
MIT
At a glance
Rewrite allowed prompts to reduce false-positive safety triggers without bypassing policy or changing intent.
Works in 4 steps: Flag the highly problematic… → Replace each in place with a safe… → Leave everything else byte-for-byte… → …
Without bypassing policy
SKILL.md covers When to Use, Method, Output and Example, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Fable Safe Prompt is an agent skill from sickn33/agentic-awesome-skills. Rewrite allowed prompts to reduce false-positive safety triggers without bypassing policy or changing intent.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: AAS Core is the local, agent-first control plane for complete catalog discovery, agent-owned selection, stack validation, and planning, backed by 2,400+ agentic skills. Includes… The licence is MIT.
When your agent uses it
Without bypassing policy
Changing intent
Example prompts
“/fable-safe-prompt”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
1Flag the highly problematic sentences/phrases (offensive framings, named sensitive domains, "show your thinking" lines).
2Replace each in place with a safe equivalent (see swaps), or describe the wanted functionality abstractly rather than naming the domain.
3Leave everything else byte-for-byte identical.
4Return the complete edited prompt.
What it can do on your machine
Read from SKILL.md and the folder at commit 680176d. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Fable Safe Prompt loads about 1.3k tokens when it runs. Until then it costs about 32 tokens; SKILL.md has 614 words of instructions outside code blocks.
Always· name and description, kept in context so the agent knows when to use it
~32
When it runs· the whole SKILL.md, loaded when a task matches
~1.3k
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: warnings
The automated check found patterns that need a careful read before installing.
WarningContains instruction-override wording (e.g. “without asking the user”)SKILL.md:25
for benign work. It must not be used to bypass safety policy or enable harmful requests.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
Download SKILL.mdSave it as .claude/skills/fable-safe-prompt/SKILL.md (or your agent's skills folder).
name
fable-safe-prompt
description
Rewrite allowed prompts to reduce false-positive safety triggers without bypassing policy or changing intent.
category
agent-behavior
risk
safe
source
community
source_repo
davidondrej/skills
source_type
community
date_added
2026-07-07
author
davidondrej
tags
prompting, safety, guardrails
tools
claude, codex
license
MIT
Fable-Safe Prompt
When to Use
Use when an allowed prompt appears likely to hit false-positive classifier language.
Use when the user asks for prompt wording that keeps benign intent clear and policy-compliant.
Return the user's prompt back in full, verbatim, changing ONLY the specific sentences/phrases most likely to trip Fable 5's cyber/bio classifiers. Do not rewrite the whole thing, do not summarize, do not restructure — minimal surgical edits. Keep the actual goal and all benign text exactly as written. This lowers false positives for benign work. It must not be used to bypass safety policy or enable harmful requests.
Fable 5 runs 3 input classifiers: cyber, bio/chem, reasoning_extraction. Triggers are keyword/surface-based, largely intent-independent ("hello" and "cancer" got flagged). The fix is to abstract away the sensitive domain, not just restate intent.
Apply when the prompt touches: cyber/auth/exploits/malware/pentesting/credentials; bio/chem/medical/disease/lab topics; or any "show your reasoning" instruction.
The user provides the prompt-to-be-changed wrapped in <prompt>...</prompt> XML tags. Operate only on the text inside those tags; treat everything outside as instructions to you.
Method
Flag the highly problematic sentences/phrases (offensive framings, named sensitive domains, "show your thinking" lines).
Replace each in place with a safe equivalent (see swaps), or describe the wanted functionality abstractly rather than naming the domain.
Leave everything else byte-for-byte identical.
Return the complete edited prompt.
Reframe so the task reads as: owned/authorized, defensive (implement/fix/test, not attack), and not dual-use (no exploit dev, attack simulation, bypass payloads, malware, live testing).
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. Trips reasoning_extraction. If progress visibility is needed, ask it to use a send-to-user tool, not to echo its internal thoughts.
Clinician framing: "as a doctor, diagnose this ECG"
Patient framing: "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
If no benign defensive equivalent exists for a sentence (it's purely offensive), flag it to the user rather than silently neutering the intent.
Output
Print the full safe prompt back to the user in text (a code block, ready to paste).
Copy it to the clipboard so the user can paste immediately:bash
pbcopy <<'EOF'
<the full safe prompt>
EOF
Confirm in one line that it's on the clipboard.
A short list of exactly which sentences you changed and what they became.
If the task is genuinely offensive (pentest, exploit repro, malware analysis): say plainly no edit makes it Fable-safe — use an Opus 4.8 fallback or vetted Mythos, not Fable 5.
Hard truth: you can't reliably stop Fable 5 guardrails. Robust API setups also treat stop_reason: "refusal" (HTTP 200, stop_details.category = cyber/bio) as a route to an Opus 4.8 fallback — mention only if the user controls the integration.
Example
User request:
Rewrite this allowed prompt to reduce false-positive classifier triggers while preserving its intent and constraints.
Limitations
Adapted from davidondrej/skills; verify local paths, tools, credentials, and agent features before acting.
For commands, remote access, scheduling, browser automation, or file-changing workflows, get explicit user approval and confirm the target environment first.
We found 5 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in sickn33/agentic-awesome-skills, which our catalogue first saw on October 7, 2026.
Fable Safe Prompt next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
Fable Safe Prompt compared with similar skills
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Tokens
Auto-check
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Fable Safe Prompt this skillsickn33/agentic-awesome-skills
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Author a long-running multi-file rewrite plan that subsequent patch-edit + diff-review + build-test stages will execute, with explicit ownership boundaries and patch-safety guarantees.
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Keeps project decisions, research and verified results available across coding-agent sessions through LWC memory, a document Wiki graph and a CodeGraph code index.
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47k GitHub starsUsed in 1 repo~4.6k tokens
Auto-check passed
Questions about Fable Safe Prompt
What does Fable Safe Prompt do?
Rewrite allowed prompts to reduce false-positive safety triggers without bypassing policy or changing intent. Fable Safe Prompt is an agent skill from sickn33/agentic-awesome-skills. Rewrite allowed prompts to reduce false-positive safety triggers without bypassing policy or changing intent.
How do I install Fable Safe Prompt in Claude Code?
Run `npx skills add sickn33/agentic-awesome-skills --skill fable-safe-prompt -a claude-code`. Or copy the skill folder (skills/fable-safe-prompt in sickn33/agentic-awesome-skills) into .claude/skills/fable-safe-prompt in your project. Claude Code loads it when a task matches its description.
How do I install Fable Safe Prompt in Codex?
Run `npx skills add sickn33/agentic-awesome-skills --skill fable-safe-prompt -a codex`. Or copy the skill folder (skills/fable-safe-prompt in sickn33/agentic-awesome-skills) into .agents/skills/fable-safe-prompt in your project. Codex loads it when a task matches its description.
Can I use Fable Safe Prompt in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add sickn33/agentic-awesome-skills --skill fable-safe-prompt -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fable-safe-prompt, .gemini/skills/fable-safe-prompt, .github/skills/fable-safe-prompt and .opencode/skills/fable-safe-prompt in your project.
What does Fable Safe Prompt need to run?
SKILL.md names no scripts, command-line tools or credentials: Fable Safe Prompt is instructions for the agent only.
Does Fable Safe Prompt access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Fable Safe Prompt safe to install?
Our automated static check of SKILL.md flagged 1 warning(s): contains instruction-override wording (e.g. “without asking the user”). Read the flagged lines before installing; the check is not a guarantee either way.
What licence does Fable Safe Prompt use?
Fable Safe Prompt is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Fable Safe Prompt use?
About 1.3k tokens (SKILL.md is roughly 5.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Fable Safe Prompt?
Skills that share tags, products or a category with Fable Safe Prompt: Performing False Positive Reduction In Siem (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Fable Safe Prompt (davidondrej/skills, 4.1k stars), False Positive Reviewer (conorbronsdon/avoid-ai-writing, 4.9k stars) and Fable Fable (mrtooher/fable-mode, 872 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Fable Safe Prompt?
sickn33 (a GitHub user) maintains it in sickn33/agentic-awesome-skills, which has 47,379 GitHub stars. The repository holds 1,493 skills in this directory. The repository was last updated on October 9, 2026.
