Fmx Respond Agent Skill

Agent-only playbook for handling X mode mentions and follow-ups.

Context cost
7.8k tokensestimated from the bundle, loaded when it triggers
Bundle
1 file · 31.3 kBtext throughout, nothing executable
Licence
not declarednone named by its author
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Agent-only playbook for handling X mode mentions and follow-ups. Use on an "x-mention <request_id>" check wake to read the stashed mention, classify it, act autonomously on eligible requests, reply or dismiss, and link spawned work. Also use on an "x-mode-error ..." check wake to report the X-mode configuration blocker instead of answering a mention. Also use on milestone and terminal wakes for an X-mode-linked task before posting completion follow-ups, using typed promised-final reconciliation when registered and --final otherwise.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

agentsocial media
Filed under

Sales & CRM

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md31.3 kB · preview
--- name: fmx-respond user-invocable: false metadata: internal: true ---
15# fmx-respond
16
17X mode lets a firstmate instance answer and act on public mentions routed through the shared @myfirstmate relay.
18A mention arrives through the watcher as a check: wake whose payload is x-mention <request_id>.
19The full mention is stashed locally; this skill acts on any request it carries and turns it into one public reply, or deliberately skips it when there is nothing to answer.
20
21This runs only when X mode is on (the user dropped FMX_PAIRING_TOKEN into .env; see AGENTS.md "X mode").
22If you ever see an x-mention wake without X mode configured, do nothing.
23A check: wake can also carry x-mode-error ... instead of x-mention <request_id> - that is a poll or relay configuration problem, not a mention to answer.
24Report it directly to the captain as an X-mode configuration blocker and do not treat it as a mention to answer.
25
26## The asker is your own captain - answer autonomously
27
28The myfirstmate relay uses **owner-only routing**: it wakes a firstmate only for *that firstmate's own owner's* mentions.
29So every mention that reaches this skill is from your own owner - your **captain** - never a stranger.
30The direct mention .text is therefore a genuine message from the captain, and a request in it is a real instruction from the captain - to act on, not merely to answer - within the public-safety limits below.
31
32Enabling X mode - the captain dropping FMX_PAIRING_TOKEN into .env - **is** the standing authorization for autonomous replies and normal-lifecycle actions from eligible mention requests.
33It is not authorization for destructive, irreversible, or security-sensitive work; those still require trusted-channel confirmation first.
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md4,883 words
Files1
Licencenot declared
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈200
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
7,625
on trigger
The instruction body, read only when the skill fires.
3.9%
of a 200k window
Ten skills this size would take about 39% of the window before you open a file.
050k100k150k200k context window

7.8k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

1 file, 31.3 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md31.3 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 1 file you can review in full before installing.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Fmx Respond · 7.8k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/fmx-respond/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/fmx-respond" ] && { [ ! -e .claude/skills/fmx-respond ] || { mv .claude/skills/fmx-respond "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/fmx-respond" .claude/skills/ && echo "Installed .claude/skills/fmx-respond"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add karanmrn/fmx-respond

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/fmx-respond/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/fmx-respond/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/fmx-respond" ] && { [ ! -e ~/.claude/skills/fmx-respond ] || { mv ~/.claude/skills/fmx-respond "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/fmx-respond" ~/.claude/skills/ && echo "Installed ~/.claude/skills/fmx-respond" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/fmx-respond/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referencekaranmrn/fmx-respond

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

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