What this skill does
Send real, physical greeting cards through the mail. Design custom cards with the user, print on premium cardstock, and mail with a first-class stamp. Use when the user wants to send a card, mentions a birthday or occasion, or asks about greeting cards. Requires a free API registration (POST /v1/auth/register returns a Bearer token). Works via API — no browser needed. Homepage https://indexcards.com — privacy policy at https://indexcards.com/privacy.
Index Cards is part of the Data & APIs category — data and API skills that fetch, query, and work with external data sources. You can install it on its own or alongside other data & apis skills from the OpenClaw catalog.
How to install Index Cards
The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:
- Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
- Open the in-app Skills panel.
- Search for
index-cardsand click Install. - The skill activates automatically when an incoming message matches its description.
Install from the command line
If you already run the OpenClaw CLI, add Index Cards with a single command:
openclaw skills add index-cards
This pulls index-cards from ClawHub and installs it into ~/.openclaw/skills/index-cards/. Restart the OpenClaw gateway afterwards so the new skill is discovered.
How to use Index Cards
Once installed, Index Cards activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.
Manual install (advanced)
If you prefer manual installation:
- Click the Download .zip button above to grab
index-cards-1.3.1.zipdirectly from our S3 mirror. - Unzip into
~/.openclaw/skills/index-cards/(create the directory if it does not exist). - Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.
Frequently asked questions
How do I install Index Cards?
Install Index Cards in the OpenClaw Easy desktop app by opening the Skills panel, searching for index-cards, and clicking Install. From a terminal you can run: openclaw skills add index-cards. Either way the skill is placed in ~/.openclaw/skills/index-cards/.
Is Index Cards free?
Yes. Index Cards is free and open-source, distributed under the Apache-2.0 license through ClawHub. No account or payment is required to download or run it.
What does Index Cards do?
Send real, physical greeting cards through the mail.
Related: more data & apis skills
If Index Cards looks useful, you may also want to check out other data & apis skills in the OpenClaw catalog:
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Free, open-source · Apache-2.0 · Works with Claude, ChatGPT, Gemini, or local Ollama models