# Hashtag generator: run it free, or from your agent

Broad, niche and long tail hashtags for a post on Instagram, TikTok, LinkedIn or X, written by an AI model.

## Prompt

Use looot to write hashtags for these posts: [captions]. 1. Set up https://looot.ai/skill.md. 2. Find a chat completion endpoint in the catalog and check its price, which is per output token. 3. For each post ask for 15 hashtags in broad, niche and long tail groups, with max_tokens 250. 4. Return a table of post and its broad, niche and long tail hashtags, and the total cost.

## What it needs

A post topic or caption, a platform and a count

## What comes back

- broad hashtags
- niche hashtags
- long tail hashtags
- all hashtags in one row
- count per group

## Endpoints and providers

- openrouter: openrouter-chat

## What it costs

The tool on the web page runs live at no cost to you and is limited per hour. The results come from public data through looot. For heavier or repeated use, run the same job from your own looot account: looot bills per call and charges nothing while your agent is idle. The live price comes from the catalog and shows on the web page.

## Post faster

Get a starting set of tags in seconds instead of typing them from memory.

## Reach a niche

Mix a few broad tags with niche and long tail ones that describe the post exactly.

## Plan a batch

Run it for each post of the week and keep the tags in your content sheet.

## Agent workflow

Let your agent write tags for every caption in a content calendar.

## How does the hashtag generator work?

You describe the post. An AI model, Gemma 4 31B run through looot, writes hashtags in three groups: broad tags, niche tags for your topic and long tail tags that are very specific. The page removes repeats and stops at your count.

## Are these hashtags based on real usage data?

No. A language model writes them from your description. For the hashtags real TikTok posts use together, with play counts, use the TikTok hashtag finder linked below.

## How many hashtags should I use?

Each platform treats hashtags its own way and changes its advice over time. A few tags that describe the post well beat a long list of loose ones. The count field takes 5 to 30.

## Which platforms does it support?

Instagram, TikTok, LinkedIn and X. The platform changes the style the model aims for. Leave the field empty for Instagram.

## Should I check the tags before posting?

Yes. A model can suggest a tag that is banned, off topic or used for something else. Search each tag on the platform first, above all the long tail ones.

## Can I run it again for a different set?

Yes. Each run writes a new set. The limit per hour still applies.

## Is this hashtag generator free?

Yes. Each run on this page costs you nothing and is limited per hour. For many posts, your agent runs the same chat endpoint on your own looot account at the per-token price shown above.

## How do I run this from an agent?

Copy the prompt above into your agent with the looot skill.md link. It calls a chat completion endpoint with a fixed output cap and returns the tags for each post.

## Related tools

- /free-tools/tiktok-hashtag-generator
- /free-tools/instagram-caption-generator
- /free-tools/instagram-bio-generator
- /free-tools/youtube-tag-extractor

## Last reviewed

2026-10-14. The price per call is read live from the catalog on the web page.

## Agent skill for this page

https://looot.ai/free-tools/hashtag-generator/skill.md sets an agent up for exactly the jobs on this page, with the live price of each, and offers the page's starter task once the user has picked a job and seen the price. The line to give an agent is under "Give this to your agent" below.

## For agents

### Give this to your agent

```text
set up looot for Hashtag generator - https://looot.ai/free-tools/hashtag-generator/skill.md
```