---
title: "Sets, signatures and tags: 1Post docs"
url: "https://get1post.com/docs/sets-signatures-tags.md"
canonical_url: "https://get1post.com/docs/sets-signatures-tags"
last_updated: "2026-10-26"
type: "reference"
summary: "Save the accounts you post to together, reuse blocks of text and tag posts so you can filter the calendar and the API."
related: ["https://get1post.com/docs/composer.md", "https://get1post.com/docs/calendar.md", "https://get1post.com/docs.md"]
---

# Sets, signatures and tags: 1Post docs

Save the accounts you post to together, reuse blocks of text and tag posts so you can filter the calendar and the API.

A set saves a selection of accounts and their settings so you can pick them together. A signature is a saved block of text added to posts. A tag is a coloured label you put on posts and filter by. All three are managed in the dashboard and through the API.

- Sets: GET, POST, PATCH and DELETE on /v1/sets.
- Signatures: the same on /v1/signatures.
- Tags: the same on /v1/tags. Rename or recolour a tag in one place.

Editing a library item needs a role that edits the library. Tags also filter GET /v1/posts, so a campaign's posts are one request.

## Questions

**Does changing a signature change posts already scheduled?**

No. A signature is added when you write the post, so scheduled posts keep the text they had.

## Related

- [The composer: 1Post docs](https://get1post.com/docs/composer.md)
- [The calendar: 1Post docs](https://get1post.com/docs/calendar.md)
- [1Post docs: composer, scheduling, API, webhooks, MCP](https://get1post.com/docs.md)