Install the "fable-safe-prompt" agent skill from https://github.com/davidondrej/skills/tree/main/skills/agent-orchestration/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 davidondrej/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/davidondrej/skills/tree/main/skills/agent-orchestration/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 davidondrej/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/davidondrej/skills/tree/main/skills/agent-orchestration/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 davidondrej/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/davidondrej/skills/tree/main/skills/agent-orchestration/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 davidondrej/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/davidondrej/skills/tree/main/skills/agent-orchestration/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 davidondrej/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/davidondrej/skills/tree/main/skills/agent-orchestration/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
4.1k
Token cost
~824 tokens
SKILL.md length
403 words
Files
2
Skills in repo
51
Repo updated
First seen
Licence
MIT
At a glance
Make minimal prompt edits to reduce false-positive refusals from Fable.
Works in 4 steps: Identify phrases likely to trigger a… → Replace them in place using the examples… → Leave everything else byte-for-byte… → …
Explicitly invokes /fable-safe-prompt
SKILL.md covers Method and Output
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Fable Safe Prompt is an agent skill from davidondrej/skills. Make minimal prompt edits to reduce false-positive refusals from Fable. Use only when the user explicitly invokes /fable-safe-prompt.
Its SKILL.md is about 820 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Agent Workflows. The repository describes itself as: access to david ondrej's personal agent skills. The licence is MIT.
When your agent uses it
Explicitly invokes /fable-safe-prompt
Example prompts
“/fable-safe-prompt”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
1Identify phrases likely to trigger a refusal.
2Replace them in place using the examples below. Preserve the actual goal; never invent authorization or disguise harmful intent.
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 7874889. 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 824 tokens when it runs. Until then it costs about 38 tokens; SKILL.md has 403 words of instructions outside code blocks.
Always· name and description, kept in context so the agent knows when to use it
~38
When it runs· the whole SKILL.md, loaded when a task matches
~824
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 passed
The automated check found no risky patterns in SKILL.md.
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). This skill also uses 1 other file; get the full folder from GitHub.
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.
disable-model-invocation
true
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
Identify phrases likely to trigger a refusal.
Replace them in place using the examples below. Preserve the actual goal; never invent authorization or disguise harmful intent.
Leave everything else byte-for-byte identical.
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
If a sentence has no benign equivalent, flag it instead of silently changing its goal.
Output
Print the full edited prompt in a ready-to-paste code block.
Copy it to the clipboard:bash
pbcopy <<'EOF'
<the full safe prompt>
EOF
Confirm in one line.
List each changed sentence and its replacement.
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.
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.
A skill your agent uses when starting any conversation - establishes how to find and use skills, requiring Skill tool invocation before ANY response including clarifying questions
Has the agent carry out an implementation plan itself, task by task in the current session, keeping a ledger, proving each step with a test and ending with one whole-branch review.
Explains how to write agents for Claude Code plugins: the markdown file with YAML frontmatter, trigger descriptions, model and color settings, and system prompt design.
Make minimal prompt edits to reduce false-positive refusals from Fable. Fable Safe Prompt is an agent skill from davidondrej/skills. Make minimal prompt edits to reduce false-positive refusals from Fable.
How do I install Fable Safe Prompt in Claude Code?
Run `npx skills add davidondrej/skills --skill fable-safe-prompt -a claude-code`. Or copy the skill folder (skills/agent-orchestration/fable-safe-prompt in davidondrej/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 davidondrej/skills --skill fable-safe-prompt -a codex`. Or copy the skill folder (skills/agent-orchestration/fable-safe-prompt in davidondrej/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 davidondrej/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 found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Fable Safe Prompt use?
Fable Safe Prompt is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Fable Safe Prompt use?
About 824 tokens (SKILL.md is roughly 3.3k 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: MCP Server Builder (anthropics/skills, 180k stars), Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 38k stars), Using Superpowers (farm-fe/farm, 5.6k stars) and Executing Plans Inline (obra/superpowers, 297k 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?
davidondrej (a GitHub user) maintains it in davidondrej/skills, which has 4,112 GitHub stars. The repository holds 51 skills in this directory. The repository was last updated on October 8, 2026.
Source: davidondrej/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.
