Codex Fable5
baskduf/FableCodex
Apply a Claude Fable 5 inspired operating style inside Codex.
Cline's system prompt includes a timestamp that may be recomputed per request, invalidating the system-prompt cache.
Install Cline Pin Timestamp
$ npx skills add OnlyTerp/prompt-cache-skills --skill cline-pin-timestamp -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install OnlyTerp/prompt-cache-skills cline-pin-timestamp --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/OnlyTerp/prompt-cache-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cline-pin-timestamp .claude/skills/cline-pin-timestamp && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "cline-pin-timestamp" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/cline-pin-timestamp into .claude/skills/cline-pin-timestamp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cline-pin-timestamp", 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.
$skill-installer install https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/cline-pin-timestampType 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.
$ npx skills add OnlyTerp/prompt-cache-skills --skill cline-pin-timestamp -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install OnlyTerp/prompt-cache-skills cline-pin-timestamp --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/OnlyTerp/prompt-cache-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cline-pin-timestamp .agents/skills/cline-pin-timestamp && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "cline-pin-timestamp" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/cline-pin-timestamp into .agents/skills/cline-pin-timestamp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cline-pin-timestamp", 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.
$ npx skills add OnlyTerp/prompt-cache-skills --skill cline-pin-timestamp -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install OnlyTerp/prompt-cache-skills cline-pin-timestamp --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/OnlyTerp/prompt-cache-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cline-pin-timestamp .cursor/skills/cline-pin-timestamp && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "cline-pin-timestamp" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/cline-pin-timestamp into .cursor/skills/cline-pin-timestamp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cline-pin-timestamp", 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.
$ gemini skills install https://github.com/OnlyTerp/prompt-cache-skills.git --path skills/cline-pin-timestamp--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add OnlyTerp/prompt-cache-skills --skill cline-pin-timestamp -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install OnlyTerp/prompt-cache-skills cline-pin-timestamp --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/OnlyTerp/prompt-cache-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cline-pin-timestamp .gemini/skills/cline-pin-timestamp && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "cline-pin-timestamp" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/cline-pin-timestamp into .gemini/skills/cline-pin-timestamp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cline-pin-timestamp", 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.
$ gh skill install OnlyTerp/prompt-cache-skills cline-pin-timestampInstalls 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).
$ npx skills add OnlyTerp/prompt-cache-skills --skill cline-pin-timestamp -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/OnlyTerp/prompt-cache-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cline-pin-timestamp .github/skills/cline-pin-timestamp && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "cline-pin-timestamp" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/cline-pin-timestamp into .github/skills/cline-pin-timestamp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cline-pin-timestamp", 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.
$ npx skills add OnlyTerp/prompt-cache-skills --skill cline-pin-timestamp -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install OnlyTerp/prompt-cache-skills cline-pin-timestamp --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/OnlyTerp/prompt-cache-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cline-pin-timestamp .opencode/skills/cline-pin-timestamp && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "cline-pin-timestamp" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/cline-pin-timestamp into .opencode/skills/cline-pin-timestamp/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cline-pin-timestamp", 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
cline-pin-timestamp- GitHub stars
- 114
- Token cost
- ~751 tokens
- SKILL.md length
- 325 words
- Files
- 1
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Cline's system prompt includes a timestamp that may be recomputed per request, invalidating the system-prompt cache.
- Works in 4 steps: Start mitmproxy. → Run a Cline task. Wait 10 seconds. Send… → Diff the system prompt bytes between the… → …
- Tasks that involve Prompt engineering
- SKILL.md covers Target, Symptom, Fix and Verify, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Cline Pin Timestamp is an agent skill from OnlyTerp/prompt-cache-skills. Cline's system prompt includes a timestamp that may be recomputed per request, invalidating the system-prompt cache.
Its SKILL.md is about 750 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in AI & LLM Engineering, covering Prompt engineering. It works with OpenAI. The repository describes itself as: Drop-in prompt-caching fixes for the LLM agent harness you use. Point your AI coding agent at this repo and it ships the patches.
When your agent uses it
- Tasks that involve Prompt engineering
Example prompts
- “/cline-pin-timestamp”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Start mitmproxy.
- Run a Cline task. Wait 10 seconds. Send a second prompt in the
- Diff the system prompt bytes between the two requests.
- Confirm response usage.cache_read_input_tokens covers the system
What it can do on your machine
Read from SKILL.md and the folder at commit 5b58ae2. 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 diff).
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
Cline Pin Timestamp loads about 751 tokens when it runs. Until then it costs about 34 tokens; SKILL.md has 325 words of instructions outside code blocks.
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.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 325 words (~751 tokens).
“src/core/prompts/system.ts in cline/cline. PR #1168 added a current-time field to the system prompt.”
- name
- cline-pin-timestamp
- target_harness
- Cline
- target_repo
- cline/cline
- target_files
- src/core/prompts/system.ts
- target_commit
- 65e9727c (verify current at apply time)
- estimated_savings
- Restores system-prompt cache reads (large; system prompt is typically 5-15k tokens)
Files
Just SKILL.md in skills/cline-pin-timestamp of OnlyTerp/prompt-cache-skills.
Open the folder on GitHubat commit 5b58ae2
Compare with similar skills
Cline Pin Timestamp 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Cline Pin Timestamp this skillOnlyTerp/prompt-cache-skills | 114 | — | ~751 | Automated safety check: Pass | Custom licence | |
| Codex Fable5baskduf/FableCodex | 437 | — | ~1.6k | Automated safety check: Pass | AGPL-3.0 | |
| System Prompt Writing Guidecashew-labs/libretto | 904 | — | ~570 | Automated safety check: Pass | MIT | |
| Prompt Engineering Guidetreylom/prompt-engineering-skills | 185 | — | ~485 | Automated safety check: Pass | Custom licence | |
| Persona Designkangarooking/system-prompt-skills | 208 | — | ~956 | Automated safety check: Pass | MIT | |
| AI Wrapper Productdavila7/claude-code-templates | 33k | 4 repos | ~1.7k | Automated safety check: Pass | MIT |
Similar skills
System Prompt Writing Guide
cashew-labs/libretto
Lays out a minimal, iteration-first approach to writing system prompts for LLM agents, with model-specific notes for Claude, GPT, Gemini, and Codex.
Prompt Engineering Guide
treylom/prompt-engineering-skills
A skill your agent uses when generating research/factcheck/image/video/slide prompts that need base templates (IFCN·StructuredResearch 등) — 단일 통합 AI 프롬프트 엔지니어링 레퍼런스의 라우팅 인덱스.
Persona Design
kangarooking/system-prompt-skills
当需要为 AI 产品定义核心身份、角色声明和能力边界时调用此 skill。典型场景包括：设计新 AI 产品的 system prompt 首段、为不同场景创建差异化角色（如教学助手 vs 编程代理）、重新定义 AI 与用户的关系框架。
AI Wrapper Product
davila7/claude-code-templates
Expert in building products that wrap AI APIs (OpenAI, Anthropic, etc.) into focused tools people will pay for.
Prompt Library
diegosouzapw/awesome-omni-skills
📝 Prompt Library workflow skill. An agent skill from diegosouzapw/awesome-omni-skills.
More from OnlyTerp/prompt-cache-skills
All 13 skills in this repoAider One-Hour Cache TTL
OnlyTerp/prompt-cache-skills
Patches Aider to request Anthropic's one-hour prompt cache lifetime, so long pauses between turns no longer expire the cache or need paid keepalive pings.
Aider Prompt Caching Default
OnlyTerp/prompt-cache-skills
Patch recipe that turns on Aider's --cache-prompts by default for models that support caching, with a verification procedure against the wire request.
Cline Prompt Cache Ladder Check
OnlyTerp/prompt-cache-skills
Verifies how Cline marks Anthropic prompt-cache breakpoints on the wire, then adds a tools breakpoint and tunes the cache TTL in its AI SDK code.
Cline OpenAI Prompt Cache Key Fix
OnlyTerp/prompt-cache-skills
Patch guide for adding a stable per-task prompt_cache_key to Cline's OpenAI native provider so cached token counts stop reading as zero.
Continue Enable Defaults
OnlyTerp/prompt-cache-skills
Continue's prompt caching is opt-in via config and off by default.
Continue Gemini Explicit
OnlyTerp/prompt-cache-skills
Continue's Gemini provider doesn't use the cachedContents API at all.
Related
Works with
Categories
Questions about Cline Pin Timestamp
What does Cline Pin Timestamp do?
Cline's system prompt includes a timestamp that may be recomputed per request, invalidating the system-prompt cache. Cline Pin Timestamp is an agent skill from OnlyTerp/prompt-cache-skills. Cline's system prompt includes a timestamp that may be recomputed per request, invalidating the system-prompt cache.
When should I use Cline Pin Timestamp?
Cline Pin Timestamp fits situations like: tasks that involve Prompt engineering.
How do I install Cline Pin Timestamp in Claude Code?
Run `npx skills add OnlyTerp/prompt-cache-skills --skill cline-pin-timestamp -a claude-code`. Or copy the skill folder (skills/cline-pin-timestamp in OnlyTerp/prompt-cache-skills) into .claude/skills/cline-pin-timestamp in your project. Claude Code loads it when a task matches its description.
How do I install Cline Pin Timestamp in Codex?
Run `npx skills add OnlyTerp/prompt-cache-skills --skill cline-pin-timestamp -a codex`. Or copy the skill folder (skills/cline-pin-timestamp in OnlyTerp/prompt-cache-skills) into .agents/skills/cline-pin-timestamp in your project. Codex loads it when a task matches its description.
Can I use Cline Pin Timestamp 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 OnlyTerp/prompt-cache-skills --skill cline-pin-timestamp -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cline-pin-timestamp, .gemini/skills/cline-pin-timestamp, .github/skills/cline-pin-timestamp and .opencode/skills/cline-pin-timestamp in your project.
What does Cline Pin Timestamp need to run?
SKILL.md names no scripts, command-line tools or credentials: Cline Pin Timestamp is instructions for the agent only.
Does Cline Pin Timestamp 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 Cline Pin Timestamp 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 Cline Pin Timestamp use?
Cline Pin Timestamp has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Cline Pin Timestamp use?
About 751 tokens (SKILL.md is roughly 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 Cline Pin Timestamp?
Skills that share tags, products or a category with Cline Pin Timestamp: Codex Fable5 (baskduf/FableCodex, 437 stars), System Prompt Writing Guide (cashew-labs/libretto, 904 stars), Prompt Engineering Guide (treylom/prompt-engineering-skills, 185 stars) and Persona Design (kangarooking/system-prompt-skills, 208 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Cline Pin Timestamp?
OnlyTerp (a GitHub user) maintains it in OnlyTerp/prompt-cache-skills, which has 114 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on August 29, 2026.
Source: OnlyTerp/prompt-cache-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.