> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trypost.it/llms.txt
> Use this file to discover all available pages before exploring further.

# Signatures

> Reusable text blocks — hashtags, links, calls-to-action — that you can append to any post.

## What are signatures?

Signatures are reusable text blocks you can append to a post with one click — hashtag sets, a link to your newsletter, a call-to-action, anything you'd otherwise retype every time. Create a signature once and reuse it across posts.

## Creating a signature

Go to **Signatures** in the sidebar or use the API:

| Field       | Required | Description                                                                                         |
| ----------- | -------- | --------------------------------------------------------------------------------------------------- |
| **Name**    | Yes      | A descriptive name (e.g., "SaaS hashtags", "Newsletter CTA", "Product launch")                      |
| **Content** | Yes      | The text appended to the post (e.g., `#saas #marketing #growth` or `🔗 Subscribe: trypost.it/news`) |

<Tip>
  Keep one signature per intent — one for hashtags, one for the newsletter CTA, one for the conference plug. You can apply more than one to the same post.
</Tip>

## Using signatures

When composing a post, click the signatures icon to see your list. Click any signature to append its content to the post.

You can apply multiple signatures to a single post — they're appended in the order you click them.

## Managing signatures

* **Edit** — Update the name or content at any time. Existing posts that already inserted the signature aren't affected — the text was copied at insertion time.
* **Delete** — Remove a signature you no longer need. Existing posts are not affected.

## Best practices

* **One intent per signature** — A hashtag pack and a newsletter CTA belong in separate signatures so you can mix and match.
* **Platform awareness** — LinkedIn performs well with 3–5 hashtags, X with 1–2, Instagram with up to 30. Consider creating platform-specific signatures.
* **Refresh regularly** — Trending tags and CTAs change. Review your signatures periodically.

## Via the API

Manage signatures programmatically:

```bash theme={null}
# Create a signature
curl -X POST https://app.trypost.it/api/signatures \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"name": "SaaS hashtags", "content": "#saas #marketing #growth #startup #b2b"}'

# List all signatures
curl -X GET https://app.trypost.it/api/signatures \
  -H "Authorization: Bearer YOUR_API_KEY"
```

See the full [Signatures API reference](/api-reference/endpoint/list-signatures).