Cover Letter

/cover-letter

Write a concise cover letter tailored to a job posting.

Usage

/cover-letter  [--cv ] [--resume ]

Examples:

• /cover-letter https://example.com/jobs/123 --cv david_alecrim_cv
• /cover-letter --resume templates/david_alecrim_semiotic_labs_rust_engineer_cv.yaml "Rust Engineer at Semiotic Labs..."

Workflow

Follow these steps exactly in order:

Step 1 — Obtain the job description

If the argument is a URL, fetch its content using WebFetch. If it is pasted text, use it directly.

Step 2 — Resolve the source resume

Use the strongest available resume source for the letter.

• If --resume was passed, use that exact YAML file.
• If --cv was passed, use templates/_cv.yaml. If it does not exist, report the error and stop.
• If the current thread already produced a tailored YAML for the same role, prefer that tailored YAML.
• In all other cases, list the candidate *_cv.yaml files and ask the user which one to use. Never guess silently when multiple reasonable options exist.

Step 3 — Pull the writing inputs

From the job description, extract:

• employer name
• role title
• product or protocol names
• mission or problem-space signals
• the most important requirements and responsibilities

From the selected resume YAML, extract:

• the strongest matching summary points
• the most relevant experience bullets
• one or two concrete impact details or metrics
• any grounded product, mission, or domain fit

Step 4 — Write the cover letter

Use these rules:

• Default to exactly 2 paragraphs unless the user asks for a different length.
• Start with Hey,
• End with:

Regards,
David

• Write in the first person.
• Use simple, direct language.
• Keep it concise.
• Make it eye catching by leading with the strongest fit for the role, not with a stack list.
• Avoid generic throat-clearing openings like I'm a strong fit for this role or I believe I am a good match. Start with concrete experience, scope, or impact instead.
• Use assertive framing when the resume supports it. Sell strongly without inventing.
• Ground every claim in the selected resume or the job description.
• Use the company name correctly. If the posting mentions a product or protocol, do not confuse it with the employer.
• Prefer one strong metric or impact detail over a long list of technologies.
• Mention mission, product, or domain motivation only when the job description and resume support it.
• Do not turn the letter into a resume summary or ATS keyword dump.

Human quality bar

The letter must feel human-written.

• Avoid inflated language, generic enthusiasm, and abstract filler.
• Avoid em dashes.
• Avoid phrases that sound like sales copy or AI copy.
• Prefer natural sentence rhythm over overly tidy structure.
• Use plain statements like I built, I improved, I want, and I’d be excited to.

Paragraph guidance

For the default 2-paragraph format:

• Paragraph 1: why I fit this role, using the strongest relevant experience and one concrete result when possible.
• Paragraph 1 should open with concrete work context or impact, not a generic claim that I fit the role.
• Paragraph 2: why I want this company, product, or problem space, and what I would bring.

Step 5 — Humanize the draft

Run the draft through the humanizer skill before returning it.

• Keep the exact requested structure after the humanizer pass.
• If the user asked for one paragraph, the final result must still be one paragraph.
• If the user asked for two paragraphs, the final result must still be two paragraphs.
• Preserve the exact greeting and sign-off format after the humanizer pass.
• Keep the language simple, direct, and grounded in the resume and JD.

Step 6 — Report only the final letter

Return only the final cover letter text. Do not include analysis, notes, bullets, or alternative drafts unless the user explicitly asks for them.

Non-negotiable rules

• Never fabricate experience, metrics, skills, or motivation.
• Never confuse the company name with the product name.
• If the user asks for one paragraph, write one paragraph.
• If the user asks for two paragraphs, write exactly two paragraphs.
• If the user gives a greeting or sign-off format, preserve it exactly.

Source & license

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

• Author: davidalecrim1
• Source: davidalecrim1/chameleon
• License: MIT

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