kshitij f210510276 feat: add prerequisites field to skill spec — hide skills with unmet dependencies

Skills can now declare runtime prerequisites (env vars, CLI binaries) via
YAML frontmatter. Skills with unmet prerequisites are excluded from the
system prompt so the agent never claims capabilities it can't deliver, and
skill_view() warns the agent about what's missing.

Three layers of defense:
- build_skills_system_prompt() filters out unavailable skills
- _find_all_skills() flags unmet prerequisites in metadata
- skill_view() returns prerequisites_warning with actionable details

Tagged 12 bundled skills that have hard runtime dependencies:
gif-search (TENOR_API_KEY), notion (NOTION_API_KEY), himalaya, imessage,
apple-notes, apple-reminders, openhue, duckduckgo-search, codebase-inspection,
blogwatcher, songsee, mcporter.

Closes #658
Fixes #630

2026-03-08 13:19:32 +05:30

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name

description

version

author

license

prerequisites

metadata

gif-search

Search and download GIFs from Tenor using curl. No dependencies beyond curl and jq. Useful for finding reaction GIFs, creating visual content, and sending GIFs in chat.

1.1.0

Hermes Agent

MIT

env_vars

commands

TENOR_API_KEY

curl

hermes

GIF Search (Tenor API)

Search and download GIFs directly via the Tenor API using curl. No extra tools needed.

Setup

Set your Tenor API key in your environment (add to ~/.hermes/.env):

TENOR_API_KEY=your_key_here

Get a free API key at https://developers.google.com/tenor/guides/quickstart — the Google Cloud Console Tenor API key is free and has generous rate limits.

Prerequisites

curl and jq (both standard on macOS/Linux)
TENOR_API_KEY environment variable

Search for GIFs

# Search and get GIF URLs
curl -s "https://tenor.googleapis.com/v2/search?q=thumbs+up&limit=5&key=${TENOR_API_KEY}" | jq -r '.results[].media_formats.gif.url'

# Get smaller/preview versions
curl -s "https://tenor.googleapis.com/v2/search?q=nice+work&limit=3&key=${TENOR_API_KEY}" | jq -r '.results[].media_formats.tinygif.url'

Download a GIF

# Search and download the top result
URL=$(curl -s "https://tenor.googleapis.com/v2/search?q=celebration&limit=1&key=${TENOR_API_KEY}" | jq -r '.results[0].media_formats.gif.url')
curl -sL "$URL" -o celebration.gif

Get Full Metadata

curl -s "https://tenor.googleapis.com/v2/search?q=cat&limit=3&key=${TENOR_API_KEY}" | jq '.results[] | {title: .title, url: .media_formats.gif.url, preview: .media_formats.tinygif.url, dimensions: .media_formats.gif.dims}'

API Parameters

Parameter	Description
`q`	Search query (URL-encode spaces as `+`)
`limit`	Max results (1-50, default 20)
`key`	API key (from `$TENOR_API_KEY` env var)
`media_filter`	Filter formats: `gif`, `tinygif`, `mp4`, `tinymp4`, `webm`
`contentfilter`	Safety: `off`, `low`, `medium`, `high`
`locale`	Language: `en_US`, `es`, `fr`, etc.

Available Media Formats

Each result has multiple formats under .media_formats:

Format	Use case
`gif`	Full quality GIF
`tinygif`	Small preview GIF
`mp4`	Video version (smaller file size)
`tinymp4`	Small preview video
`webm`	WebM video
`nanogif`	Tiny thumbnail

Notes

URL-encode the query: spaces as +, special chars as %XX
For sending in chat, tinygif URLs are lighter weight
GIF URLs can be used directly in markdown: ![alt](url)

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