Agent skill
Create Skill
Generate a complete new skill from a one-line prompt
Install this agent skill to your Project
npx add-skill https://github.com/aaronjmars/aeon/tree/main/skills/create-skill
SKILL.md
${var} — A natural-language description of the skill to create. Required. Example:
"monitor Hacker News for AI papers and send a summary"or"track gas prices on Ethereum and alert when below 10 gwei".
Today is ${today}. Your task is to generate a complete, production-ready skill from the description in ${var}.
Steps
-
Parse the request. Extract from
${var}:- The core action (monitor, fetch, generate, analyze, alert, etc.)
- The data source(s) (APIs, websites, RSS, on-chain, GitHub, etc.)
- The output format (notification, article, file, PR, etc.)
- Any configurable parameters the skill should accept via its own
${var}
-
Check for duplicates. List existing skills:
bashls skills/Read any skill that sounds similar to confirm the new skill is genuinely different. If a near-duplicate exists, note it and design the new skill to complement rather than overlap.
-
Research the data sources. For each API or data source the skill needs:
- WebSearch for the current API documentation
- Identify the correct endpoints, required auth, and response format
- Note any environment variables needed (API keys, tokens, etc.)
- Determine fallback strategies if an API key isn't set (e.g., use WebSearch/WebFetch instead)
-
Design the skill. Decide:
- Skill name — lowercase, hyphenated, 2-3 words max (e.g.,
gas-alert,hn-papers) - Description — one sentence, starts with a verb
- Tags — pick from:
content,crypto,dev,meta,news,research,social - Variable behavior — what
${var}controls and what happens when it's empty - Steps — 4-8 numbered steps following the standard pattern:
- Read context (memory, prior logs)
- Fetch/search for data
- Process/analyze/synthesize
- Write output (article, file, or notification)
- Update memory logs
- Notify via
./notify
- Environment variables — any API keys or secrets needed
- Schedule suggestion — what cron schedule makes sense
- Skill name — lowercase, hyphenated, 2-3 words max (e.g.,
-
Write the SKILL.md file. Create
skills/{skill-name}/SKILL.mdwith this exact structure:markdown--- name: {Display Name} description: {One-sentence description starting with a verb} var: "" tags: [{tags}] --- > **${var}** — {What the variable controls}. {If empty behavior}. Today is ${today}. {One sentence describing the task.} ## Steps 1. **{Step title}.** {Instructions with specifics — endpoints, commands, formats.} 2. **{Step title}.** {More instructions. Include code blocks for curl/bash when relevant.} ... N-1. **Log.** Append to `memory/logs/${today}.md`: - Skill: {skill-name} - What was done and key outputs N. **Notify.** Send via `./notify`: {Output format template}Rules for the SKILL.md content:
- Write complete curl commands with proper headers and URL encoding
- Include jq parsing for JSON APIs
- Specify character limits for notifications (under 4000 chars)
- Every link in output must be clickable (full URLs, not placeholders)
- Include fallback behavior when optional API keys aren't set
- Use
${var}and${today}template variables — no other made-up variables - No TODOs, no placeholders, no "fill in later" — everything must be production-ready
-
Register in aeon.yml. Add the new skill to
aeon.ymlin the appropriate time-slot section:- Format:
{skill-name}: { enabled: false, schedule: "{suggested_cron}" } - Add a comment if the schedule or behavior needs explanation
- Place it near related skills (crypto with crypto, content with content, etc.)
- Format:
-
Log. Append to
memory/logs/${today}.md:- Skill: create-skill
- Created:
skills/{skill-name}/SKILL.md - Registered in aeon.yml with schedule
{cron} - Description of what the new skill does
-
Notify. Send via
./notify:New skill created: **{skill-name}** {description} Schedule: `{cron}` (disabled by default) Trigger manually: dispatch with skill=`{skill-name}`
Quality checklist
Before finalizing, verify the generated SKILL.md:
- Frontmatter has all required fields (name, description, var, tags)
- Variable documentation is a single
>block quote line - Steps are numbered and each has a bold title
- All API calls include complete curl commands (not pseudo-code)
- Fallback behavior defined for optional environment variables
- Output format specified with character limits
- Ends with memory log + notification steps
- No placeholders or TODOs anywhere in the file
- Skill name doesn't conflict with existing skills
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