Brand Voice

Brand Voice

Build a durable voice profile from real source material, then use that profile everywhere instead of re-deriving style from scratch or defaulting to generic AI copy.

When to Activate

• the user wants content or outreach in a specific voice
• writing for X, LinkedIn, email, launch posts, threads, or product updates
• adapting a known author's tone across channels
• the existing content lane needs a reusable style system instead of one-off mimicry

Source Priority

Use the strongest real source set available, in this order:

1. recent original X posts and threads
2. articles, essays, memos, launch notes, or newsletters
3. real outbound emails or DMs that worked
4. product docs, changelogs, README framing, and site copy

Do not use generic platform exemplars as source material.

Collection Workflow

1. Gather 5 to 20 representative samples when available.
2. Prefer recent material over old material unless the user says the older writing is more canonical.
3. Separate "public launch voice" from "private working voice" if the source set clearly splits.
4. If live X access is available, use x-api to pull recent original posts before drafting.
5. If site copy matters, include the current EGC landing page and repo/plugin framing.

What to Extract

• rhythm and sentence length
• compression vs explanation
• capitalization norms
• parenthetical use
• question frequency and purpose
• how sharply claims are made
• how often numbers, mechanisms, or receipts show up
• how transitions work
• what the author never does

Output Contract

Produce a reusable VOICE PROFILE block that downstream skills can consume directly. Use the schema in [references/voice-profile-schema.md](references/voice-profile-schema.md).

Keep the profile structured and short enough to reuse in session context. The point is not literary criticism. The point is operational reuse.

Felipe / EGC Defaults

If the user wants Felipe / EGC voice and live sources are thin, start here unless newer source material overrides it:

• direct, compressed, concrete
• specifics, mechanisms, receipts, and numbers beat adjectives
• parentheticals are for qualification, narrowing, or over-clarification
• capitalization is conventional unless there is a real reason to break it
• questions are rare and should not be used as bait
• tone can be sharp, blunt, skeptical, or dry
• transitions should feel earned, not smoothed over

Hard Bans

Delete and rewrite any of these:

• fake curiosity hooks
• "not X, just Y"
• "no fluff"
• forced lowercase
• LinkedIn thought-leader cadence
• bait questions
• "Excited to share"
• generic founder-journey filler
• corny parentheticals

Persistence Rules

• Reuse the latest confirmed VOICE PROFILE across related tasks in the same session.
• If the user asks for a durable artifact, save the profile in the requested workspace location or memory surface.
• Do not create repo-tracked files that store personal voice fingerprints unless the user explicitly asks for that.

Downstream Use

Use this skill before or inside:

• content-engine
• crosspost
• lead-intelligence
• article or launch writing
• cold or warm outbound across X, LinkedIn, and email

If another skill already has a partial voice capture section, this skill is the canonical source of truth.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: Fmarzochi
• Source: Fmarzochi/EGC
• License: Apache-2.0
• Homepage: https://fmarzochi.github.io/EGCSite/

Install and usage instructions live in the source repository linked above.