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Agent skill

Fm

by weave-os in weave-os/router

Alias for force-model — pin this Codex session to a specific model through the Weave Router.

Apache-2.0Auto-check passed

Install Fm

skills CLI
$ npx skills add weave-os/router --skill fm -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install weave-os/router fm --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/weave-os/router.git skills-src && mkdir -p .claude/skills && cp -r skills-src/install/codex-skills/fm .claude/skills/fm && rm -rf skills-src

Use ~/.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/

Facts

Skill name
fm
GitHub stars
5.6k
Token cost
~178 tokens
SKILL.md length
88 words
Files
2 (incl. scripts)
Skills in repo
19
Repo updated
First seen
Licence
Apache-2.0

At a glance

Alias for force-model — pin this Codex session to a specific model through the Weave Router.

  • Runs Shell scripts from its folder

What it does

Fm is an agent skill from weave-os/router. Alias for force-model — pin this Codex session to a specific model through the Weave Router.

Its SKILL.md is about 180 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/emit.sh`).

The repository describes itself as: Model router for agentic systems. Routes every prompt to the right model in <50ms. Cut costs 40-70% with just an endpoint change. The licence is Apache-2.0.

Example prompts

  • “Use the fm skill to alia for force-model — pin this Codex session to a specific model through the Weave Router”
  • “/fm”

Requirements

  • A Bash shell

What it can do on your machine

Read from SKILL.md and the folder at commit 8e8ebe6. 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

    Ships 1 file in scripts/ (Shell), which the agent can run.

    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

Fm loads about 178 tokens when it runs. Until then it costs about 24 tokens; SKILL.md has 88 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~24
When it runs · the whole SKILL.md, loaded when a task matches
~178

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); the scripts in this folder are not scanned.

SKILL.md

The full file from weave-os/router at commit 8e8ebe6, republished under its Apache-2.0 licence (© weave-os). 88 words, ~178 tokens.

Download SKILL.mdSave it as .claude/skills/fm/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
fm
description
Alias for force-model — pin this Codex session to a specific model through the Weave Router.
<!-- weave-router managed fm skill -->

When the user invokes $fm <model-id>, run this skill's scripts/emit.sh using the absolute path shown in this skill's <path> (its directory + /scripts/emit.sh). Pass the model id as arguments, quoted as a single argument list. Do not send a user message and do not type a Codex slash command.

The script prints a leading-space /force-model line. The Weave Router reads that exec output, pins the session, and continues this turn — so run the script once and do not repeat its output as your answer. Then report the router's response.

© weave-os, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (scripts) in install/codex-skills/fm of weave-os/router.

  • SKILL.md
  • scripts/emit.sh

Open the folder on GitHubat commit 8e8ebe6

Compare with similar skills

Fm 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.

Fm compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Fm this skillweave-os/router5.6k—~178Automated safety check: PassApache-2.0
Porters Five Forcesphuryn/pm-skills27k—~2kAutomated safety check: PassMIT
Detecting Rdp Brute Force Attacksmukul975/Anthropic-Cybersecurity-Skills34k—~779Automated safety check: PassApache-2.0
Pinned Commentcharlie947/social-media-skills3.8k—~2.3kAutomated safety check: PassMIT
Hunt Brute Forcesickn33/agentic-awesome-skills47k1 repos~4.9kAutomated safety check: PassMIT
Porters Five Forcesdeanpeters/Product-Manager-Skills7.2k—~2.7kAutomated safety check: PassCustom licence

Similar skills

  • Porters Five Forces

    phuryn/pm-skills

    Perform Porter's Five Forces analysis — competitive rivalry, supplier power, buyer power, threat of substitutes, and threat of new entrants.

    27k GitHub stars~2k tokensUpdated 24 days ago
    Auto-check passed

  • Detecting Rdp Brute Force Attacks

    mukul975/Anthropic-Cybersecurity-Skills

    Detect RDP brute force attacks by parsing Windows Security Event Logs (EVTX files, via python-evtx) for failed logon patterns (Event ID 4625, Logon Type 10/3), correlating with successful logons…

    34k GitHub stars~779 tokensUpdated 1 mo ago
    SecurityAuto-check passed

  • Pinned Comment

    charlie947/social-media-skills

    Write deadpan LinkedIn pinned comments AND matching image generation prompts in the user’s voice.

    3.8k GitHub stars~2.3k tokensUpdated 23 days ago
    Writing & ContentAuto-check passed

  • Hunt Brute Force

    sickn33/agentic-awesome-skills

    Hunt Missing/Weak Rate Limiting

    47k GitHub starsUsed in 1 repo~4.9k tokens
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  • Porters Five Forces

    deanpeters/Product-Manager-Skills

    Read an industry's structure through Porter's Five Forces with documented signals per rating, ending at the profit pool.

    7.2k GitHub stars~2.7k tokensUpdated 1 mo ago
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  • HTML Ppt Zhangzara Pin And Paper

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More from weave-os/router

All 19 skills in this repo

  • Weave Router Local Testing

    weave-os/router

    Stands up the Weave model router in Docker Compose and drives it with claude -p against a real or mocked upstream to reproduce and verify routing and streaming behavior.

    5.6k GitHub stars~3.1k tokensUpdated today
    Auto-check: notes

  • Test Weave Router with Codex

    weave-os/router

    Local test harness for the Weave router: a docker compose stack plus codex exec runs that confirm how Codex requests are routed, translated and marked.

    5.6k GitHub stars~4.7k tokensUpdated today
    Auto-check: notes

  • PR Merge Ready

    weave-os/router

    Works through every review comment on a pull request in one pass, fixes what it can, escalates human decisions and keeps CI churn to a single push.

    5.6k GitHub stars~10k tokensUpdated today
    Auto-check passed

  • Claude Session Router Debugger

    weave-os/router

    Correlates a Claude Code session's local transcript with a model router's production cloud logs to explain why a specific response rendered the way it did.

    5.6k GitHub stars~2.9k tokensUpdated today
    Auto-check passed

  • Install Language Servers

    weave-os/router

    Installs a language server such as gopls, typescript-language-server, pyright or rust-analyzer and, with explicit confirmation, its underlying toolchain so the lsp tool can use it.

    5.6k GitHub stars~745 tokensUpdated today
    Auto-check: notes

  • Codex Session Debugging

    weave-os/router

    Correlates a Codex CLI session's local transcript with a model router's production logs to explain why a reply rendered the way it did.

    5.6k GitHub stars~4.5k tokensUpdated today
    Auto-check: warnings

Questions about Fm

What does Fm do?

Alias for force-model — pin this Codex session to a specific model through the Weave Router. Fm is an agent skill from weave-os/router. Alias for force-model — pin this Codex session to a specific model through the Weave Router.

How do I install Fm in Claude Code?

Run `npx skills add weave-os/router --skill fm -a claude-code`. Or copy the skill folder (install/codex-skills/fm in weave-os/router) into .claude/skills/fm in your project. Claude Code loads it when a task matches its description.

How do I install Fm in Codex?

Run `npx skills add weave-os/router --skill fm -a codex`. Or copy the skill folder (install/codex-skills/fm in weave-os/router) into .agents/skills/fm in your project. Codex loads it when a task matches its description.

Can I use Fm 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 weave-os/router --skill fm -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fm, .gemini/skills/fm, .github/skills/fm and .opencode/skills/fm in your project.

What does Fm need to run?

Going by SKILL.md and its folder, Fm needs a shell for the scripts in its folder. Our summary lists: A Bash shell.

Does Fm 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 Fm 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Fm use?

Fm is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Fm use?

About 178 tokens (SKILL.md is roughly 712 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 Fm?

Skills that share tags, products or a category with Fm: Porters Five Forces (phuryn/pm-skills, 27k stars), Detecting Rdp Brute Force Attacks (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Pinned Comment (charlie947/social-media-skills, 3.8k stars) and Hunt Brute Force (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Fm?

weave-os (a GitHub organization) maintains it in weave-os/router, which has 5,576 GitHub stars. The repository holds 19 skills in this directory. The repository was last updated on October 8, 2026.

Source: weave-os/router on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.