Embeddings via 9Router
decolua/9router
Generates vector embeddings through the 9Router /v1/embeddings endpoint, using models from providers such as OpenAI, Gemini, Mistral and Voyage for RAG and semantic search.
OpenCode doesn't set promptcachekey for Mistral models, missing the documented 10% cached-token discount.
Install Opencode Mistral Cache Key
$ npx skills add OnlyTerp/prompt-cache-skills --skill opencode-mistral-cache-key -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install OnlyTerp/prompt-cache-skills opencode-mistral-cache-key --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/opencode-mistral-cache-key .claude/skills/opencode-mistral-cache-key && 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 "opencode-mistral-cache-key" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/opencode-mistral-cache-key into .claude/skills/opencode-mistral-cache-key/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opencode-mistral-cache-key", 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/opencode-mistral-cache-keyType 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 opencode-mistral-cache-key -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install OnlyTerp/prompt-cache-skills opencode-mistral-cache-key --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/opencode-mistral-cache-key .agents/skills/opencode-mistral-cache-key && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "opencode-mistral-cache-key" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/opencode-mistral-cache-key into .agents/skills/opencode-mistral-cache-key/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opencode-mistral-cache-key", 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 opencode-mistral-cache-key -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install OnlyTerp/prompt-cache-skills opencode-mistral-cache-key --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/opencode-mistral-cache-key .cursor/skills/opencode-mistral-cache-key && 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 "opencode-mistral-cache-key" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/opencode-mistral-cache-key into .cursor/skills/opencode-mistral-cache-key/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opencode-mistral-cache-key", 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/opencode-mistral-cache-key--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 opencode-mistral-cache-key -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install OnlyTerp/prompt-cache-skills opencode-mistral-cache-key --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/opencode-mistral-cache-key .gemini/skills/opencode-mistral-cache-key && 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 "opencode-mistral-cache-key" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/opencode-mistral-cache-key into .gemini/skills/opencode-mistral-cache-key/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opencode-mistral-cache-key", 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 opencode-mistral-cache-keyInstalls 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 opencode-mistral-cache-key -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/opencode-mistral-cache-key .github/skills/opencode-mistral-cache-key && 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 "opencode-mistral-cache-key" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/opencode-mistral-cache-key into .github/skills/opencode-mistral-cache-key/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opencode-mistral-cache-key", 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 opencode-mistral-cache-key -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 opencode-mistral-cache-key --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/opencode-mistral-cache-key .opencode/skills/opencode-mistral-cache-key && 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 "opencode-mistral-cache-key" agent skill from https://github.com/OnlyTerp/prompt-cache-skills/tree/main/skills/opencode-mistral-cache-key into .opencode/skills/opencode-mistral-cache-key/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "opencode-mistral-cache-key", 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
opencode-mistral-cache-key- GitHub stars
- 114
- Token cost
- ~638 tokens
- SKILL.md length
- 212 words
- Files
- 1
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
OpenCode doesn't set promptcachekey for Mistral models, missing the documented 10% cached-token discount.
- Works in 6 steps: Configure OpenCode with… → Send two identical prompts. → Capture wire to Mistral. → …
- Tasks that involve LLM cost and token optimization
- 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
Opencode Mistral Cache Key is an agent skill from OnlyTerp/prompt-cache-skills. OpenCode doesn't set promptcachekey for Mistral models, missing the documented 10% cached-token discount.
Its SKILL.md is about 640 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 LLM cost and token optimization. It works with Mistral AI and 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 LLM cost and token optimization
Example prompts
- “/opencode-mistral-cache-key”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Configure OpenCode with mistral-large-latest or similar.
- Send two identical prompts.
- Capture wire to Mistral.
- Before fix: request body has no prompt_cache_key field.
- After fix: prompt_cache_key field present and identical
- Inspect response usage for cached-token indicators (Mistral
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
Opencode Mistral Cache Key loads about 638 tokens when it runs. Until then it costs about 34 tokens; SKILL.md has 212 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 212 words (~638 tokens).
- name
- opencode-mistral-cache-key
- target_harness
- OpenCode
- target_repo
- sst/opencode
- target_files
- packages/opencode/src/provider/transform.ts
- target_commit
- dev branch @ a9ef5a0f
- estimated_savings
- 90% input discount on Mistral cached tokens (currently 0%)
Files
Just SKILL.md in skills/opencode-mistral-cache-key of OnlyTerp/prompt-cache-skills.
Open the folder on GitHubat commit 5b58ae2
Compare with similar skills
Opencode Mistral Cache Key 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 |
|---|---|---|---|---|---|---|
| Opencode Mistral Cache Key this skillOnlyTerp/prompt-cache-skills | 114 | — | ~638 | Automated safety check: Pass | Custom licence | |
| Embeddings via 9Routerdecolua/9router | 30k | — | ~604 | Automated safety check: Pass | MIT | |
| Agents Best PracticesDenisSergeevitch/agents-best-practices | 2.4k | — | ~7.4k | Automated safety check: Pass | MIT | |
| Bridgic LLMsbitsky-tech/bridgic | 155 | — | ~839 | Automated safety check: Notes | MIT | |
| Vibepcx-wave/vibe-skill | 119 | — | ~7.2k | Automated safety check: Notes | MIT | |
| Keiroutermydisha/keirouter | 147 | — | ~995 | Automated safety check: Pass | MIT |
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DenisSergeevitch/agents-best-practices
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LLM provider initialization for bridgic projects. An agent skill from bitsky-tech/bridgic.
Vibe
pcx-wave/vibe-skill
Delegate a coding task to Mistral Vibe and supervise the result via git diff.
Keirouter
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Entry point for KeiRouter — local/remote AI gateway with OpenAI-compatible REST for chat, image, TTS, embeddings, web search, web fetch.
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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
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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
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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
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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.
Cline Pin Timestamp
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Cline's system prompt includes a timestamp that may be recomputed per request, invalidating the system-prompt cache.
Continue Enable Defaults
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Continue's prompt caching is opt-in via config and off by default.
Related
Works with
Categories
Questions about Opencode Mistral Cache Key
What does Opencode Mistral Cache Key do?
OpenCode doesn't set promptcachekey for Mistral models, missing the documented 10% cached-token discount. Opencode Mistral Cache Key is an agent skill from OnlyTerp/prompt-cache-skills. OpenCode doesn't set promptcachekey for Mistral models, missing the documented 10% cached-token discount.
When should I use Opencode Mistral Cache Key?
Opencode Mistral Cache Key fits situations like: tasks that involve LLM cost and token optimization.
How do I install Opencode Mistral Cache Key in Claude Code?
Run `npx skills add OnlyTerp/prompt-cache-skills --skill opencode-mistral-cache-key -a claude-code`. Or copy the skill folder (skills/opencode-mistral-cache-key in OnlyTerp/prompt-cache-skills) into .claude/skills/opencode-mistral-cache-key in your project. Claude Code loads it when a task matches its description.
How do I install Opencode Mistral Cache Key in Codex?
Run `npx skills add OnlyTerp/prompt-cache-skills --skill opencode-mistral-cache-key -a codex`. Or copy the skill folder (skills/opencode-mistral-cache-key in OnlyTerp/prompt-cache-skills) into .agents/skills/opencode-mistral-cache-key in your project. Codex loads it when a task matches its description.
Can I use Opencode Mistral Cache Key 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 opencode-mistral-cache-key -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/opencode-mistral-cache-key, .gemini/skills/opencode-mistral-cache-key, .github/skills/opencode-mistral-cache-key and .opencode/skills/opencode-mistral-cache-key in your project.
What does Opencode Mistral Cache Key need to run?
SKILL.md names no scripts, command-line tools or credentials: Opencode Mistral Cache Key is instructions for the agent only.
Does Opencode Mistral Cache Key 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 Opencode Mistral Cache Key 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 Opencode Mistral Cache Key use?
Opencode Mistral Cache Key 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 Opencode Mistral Cache Key use?
About 638 tokens (SKILL.md is roughly 2.6k 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 Opencode Mistral Cache Key?
Skills that share tags, products or a category with Opencode Mistral Cache Key: Embeddings via 9Router (decolua/9router, 30k stars), Agents Best Practices (DenisSergeevitch/agents-best-practices, 2.4k stars), Bridgic LLMs (bitsky-tech/bridgic, 155 stars) and Vibe (pcx-wave/vibe-skill, 119 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Opencode Mistral Cache Key?
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.