Works with the AI Agents you already use

    Claude CodeClaude CodeCursorCursorCodex CLICodex CLIMuseMuseDotsDots+21 more

    Skill Seller Kit: Turn a Workflow into a SKILL.md That Sells

    1

    Turn a workflow into a sellable agent skill: 8-question interview, scaffold, spec lint, trigger check, price from 356 real Agensi listings, listing copy, cover and a verified upload zip.

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    Skill Seller Kit: Turn a Workflow into a SKILL.md That Sells

    Skill Seller Kit: Turn a Workflow into a SKILL.md That Sells

    Example session with this skill installed

    skillkit new: every release I write the notes by hand (git log between tags, drop release/merge commits, group features/fixes/docs/deps, link PRs, call out breaking changes, thank contributors). Turn that into a skill I can sell on Agensi.

    • Read your context and instructions
    • Compiled the seller kit

    (Real run, 20 Oct 2026. Full files in examples/release-notes-from-git-2026-10-20/.)

    1. Interview: 8 questions answered -> 02-spec.json (job, buyers, 6 trigger phrasings, 4 near-miss prompts, inputs, 5 steps, boundaries).
    2. Scaffold: python3 scripts/new_skill.py --spec 02-spec.json --out .
      created release-notes-from-git/ (SKILL.md 491-char description, 5 steps, 3 evals, 8 trigger prompts)
    3. Lint 1: Score 75/100 · P1 1. MISSING_FILE: SKILL.md runs scripts/release_notes.py but it is not in the folder.
    4. Trigger check 1: likely misses 3: "what's new in this version?" (0% overlap), "prepare the release announcement for 1.20" (25%), "list the PRs merged since the previous tag" (33%). Missing words: version, prepar, announcement, merg, prs, previou.
      -> description rewritten (571 chars); trigger check 2: likely misses 0 · false triggers 0.
    5. Real run of the new script on axios v1.19.0 -> v1.20.0 (31 commits):

    v1.20.0 (2026-08-19)

    30 changes since v1.19.0 · full diff

    Features

    • HttpStatusCode: Add RFC 9110 aliases for 413 and 422 (#11082)

    Bug fixes

    • Core methodList, HTTP adapter errors, and add tests (#11096)
    • xhr: Flush final progress during the live loadend dispatch (#11121)

    interceptors: Tolerate nullish handlers in syncHandlerEntries (#11118)

    • Harden runtime option handling (#11141)

    http: Stop per-socket error listener from retaining the installing request's context (memory leak) (#11091)

    • xhr: Reject navigation-canceled requests as ECONNABORTED (#11094)
      ...
      summary: 30 changes, 1 release commit skipped, 13 bot commits, 11 human contributors, 0 unclassified.
    1. Lint 2: Score 100/100 · P1 0 · P2 0 · P3 0 (official agentskills validate: Valid skill).
    2. Price: $3. 5 paid comps, median $5 -> ~70% = $3.50 -> $3. Free rival changelog-generator has 75 installs, so the first line names what it adds.
    3. Listing: 12/12 checks pass (title 55/60, summary 171/200, 6-row sample table, example 3,017 chars).
    4. Package: release-notes-from-git-v1.0.0.zip · 10 files · 10,110 bytes · one top folder · integrity ok.
      Next: you review upload/, then upload it on Agensi yourself (fields in templates/marketplace-fields.md).
    02-spec.json

    Connects securely to your tools. The creator never sees your data.

    About this skill

    Unlike free skill creators that stop at a SKILL.md, this kit takes your skill to a sale: spec + review lint, trigger check, price from 356 real Agensi listings, listing copy with 12 checks, cover and a verified zip.

    Sample output: real worked example, a release-notes skill built with the kit on 20 Oct 2026 (run on the public axios repo)

    StepKit toolReal result
    Scaffoldnew_skill.pySKILL.md + evals + 8 trigger prompts from the interview spec
    First lintlint_skill.py75/100: P1 MISSING_FILE scripts/release_notes.py
    Trigger checktrigger_check.py3 likely misses ("what's new in this version?") -> 0 after the description rewrite
    Real runthe new skill's scriptaxios v1.19.0 -> v1.20.0: 31 commits, 30 changes, 13 bot bumps folded into 1 line, 0 unclassified
    Final lintlint_skill.py100/100, and passes the official agentskills validate
    Priceprice_comps.py$3: 5 paid comps (median $5) + free rival changelog-generator (75 installs)
    Listingbuild_listing.py12/12 checks pass
    Packagepackage_skill.py10 files, 10,110 bytes, one top folder, SHA-256 verified

    What you get

    • SKILL.md: 11-step workflow, 8 interview questions, rules, 9 commands
    • 7 stdlib Python tools: scaffold, lint (P1/P2/P3 + 0-100 score), trigger check, price comps, listing builder, cover renderer, packager
    • Agensi snapshot: 356 listings with price, installs and views (20 Oct 2026) + a 'what sells' report
    • 9 templates: spec, listing, trigger prompts, description, example session, FAQ bank, cover, launch posts, marketplace fields (Agensi, MCP Market, Gumroad, AgentMart, GitHub)
    • The full real worked example (interview to zip) + the linter run on all 19 skills in anthropics/skills
    • Self-test: 33 checks (bash tests/run_tests.sh)

    Who it's for

    Developers and creators who want to sell agent skills on Agensi, MCP Market, Gumroad or AgentMart, or fix one that got rejected or isn't selling.

    What it won't do

    • Building MCP servers or Apify actors (the listing steps still apply)
    • Cloning another seller's paid skill

    FAQ

    Why pay when the free skill-creator exists? skill-creator helps you write and test a skill. It has nothing on pricing, listings, covers or marketplace review. This kit covers that half: lint against the spec and review problems, comps-based price, listing copy with checks, cover, verified zip, launch checklist.

    Does it upload or publish for me? No. It prepares every field and file; the agent asks before any submit, publish or post, and you click.

    Which marketplaces? Field guides for Agensi, MCP Market, Gumroad, AgentMart and GitHub. The skill itself follows the open Agent Skills spec, so it works anywhere SKILL.md folders load.

    How current is the price data? The bundled snapshot is 356 public Agensi listings from 20 Oct 2026. price_comps.py reads any CSV with the same columns, so you can swap in a fresh export.

    What do I need installed? Python 3.8+ (standard library only). Chrome or Chromium is optional, for the cover PNG.

    Is the worked example real? Yes: a release-notes skill built step by step on 20 Oct 2026 and run on the public axios repo (v1.19.0 -> v1.20.0). Every numbered output file is in examples/.

    Trust Agent Skills format (Claude Code, Cursor, Codex) · v1.0.0 · passes the official agentskills validator · 33-check self-test · stdlib Python, no API keys · never uploads or publishes without asking

    How to use

    1. 1

      Connect your agent to the Agensi MCP

      Copy the prompt and paste it into Claude, ChatGPT, Cursor or any agent that supports MCP. It sets up the connection for you. Manual setup

    2. 2

      Sign in to Agensi

      Your agent shows a sign-in link. Sign in and click Allow.

    3. 3

      Ask for what you need

      Your agent loads this skill and uses it on your task. It always asks before any payment.

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    Security scan

    Security scan passed 9 days ago

    Requires

    Python
    Ready MCP
    Git

    Listed9 days ago

    What's inside

    Frequently Asked Questions