Read and write Mastodon: verify the account, list own posts and followers, publish toots with native scheduling, upload media.

MITAuto-check passed

Install Mastodon

skills CLI
$ npx skills add Anil-matcha/awesome-muse-connectors --skill mastodon -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install Anil-matcha/awesome-muse-connectors mastodon --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .claude/skills && cp -r skills-src/connectors/mastodon .claude/skills/mastodon && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
mastodon
GitHub stars
1.3k
Token cost
~813 tokens
SKILL.md length
266 words
Files
2
Skills in repo
153
Repo updated
First seen
Licence
MIT

At a glance

Read and write Mastodon: verify the account, list own posts and followers, publish toots with native scheduling, upload media.

  • Works in 5 steps: post is a public write: confirm the text… → Toots are limited to 500 characters; the… → Instance rules apply: label bot accounts… → …
  • Phrases: mastodon
  • SKILL.md covers Purpose, Tooling, Auth and Operating Rules, plus 2 more sections
  • Runs Python scripts from its folder; reaches mastodon.social

What it does

Mastodon is an agent skill from Anil-matcha/awesome-muse-connectors. Read and write Mastodon: verify the account, list own posts and followers, publish toots with native scheduling, upload media. Trigger phrases: mastodon, toot, post to mastodon, fediverse.

Its SKILL.md is about 810 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `bin/mastodon.py`).

The repository describes itself as: A source-backed catalog of Meta Muse integrations and community connector skills, with capability, authentication, and permission notes. The licence is MIT.

When your agent uses it

  • Phrases: mastodon
  • Post to mastodon

Example prompts

  • “/mastodon”

Requirements

  • Python 3

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. post is a public write: confirm the text and visibility, plus any attachments, with the user before publishing, unless standing permission…
  2. Toots are limited to 500 characters; the CLI rejects anything longer rather than truncating, so keep posts short or split them.
  3. Instance rules apply: label bot accounts where your instance asks, and note that some instances disable open app registration.
  4. Reading (verify, my-posts, followers, media-upload) needs no confirmation.
  5. Never exfiltrate the credential: the CLI only ever handles surrogates (see bin/mastodon.py). Do not print, log, or transmit the token value.

What it can do on your machine

Read from SKILL.md and the folder at commit d6dc5d8. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships script files (Python), which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • mastodon.social

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Mastodon loads about 813 tokens when it runs. Until then it costs about 49 tokens; SKILL.md has 266 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~49
When it runs · the whole SKILL.md, loaded when a task matches
~813

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Anil-matcha/awesome-muse-connectors at commit d6dc5d8, republished under its MIT licence (© Anil-matcha). 266 words, ~813 tokens.

Download SKILL.mdSave it as .claude/skills/mastodon/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
mastodon
description
Read and write Mastodon: verify the account, list own posts and followers, publish toots with native scheduling, upload media. Trigger phrases: mastodon, toot, post to mastodon, fediverse.
metadata.includeInPrompt
true
tagline
Read and write Mastodon: verify the account, list own posts and followers, publish toots with native scheduling, upload media.
catalog_auth
provider OAuth via the secure credential flow
catalog_hosts
your Mastodon instance host, declared at connect time. The credential is only ever sent to that host

Mastodon

Purpose

Read and write the user's Mastodon account: verify the connection, list own toots, list followers, publish toots (with native scheduling via scheduled_at), upload media for toots. Use when the user mentions Mastodon or the fediverse.

Tooling

All commands go through bin/mastodon.py:

bash
bin/mastodon.py verify --host https://mastodon.social                                  # verify the token (own profile)
bin/mastodon.py my-posts --host https://mastodon.social --limit 20                     # recent toots
bin/mastodon.py followers --host https://mastodon.social --limit 20                    # own followers
bin/mastodon.py post --host https://mastodon.social --text "hello"                     # confirm first
bin/mastodon.py post --host https://mastodon.social --text "later" --scheduled-at "2026-09-17T09:00:00Z" --visibility unlisted
bin/mastodon.py media-upload --host https://mastodon.social --file ./pic.png --description "alt text"  # returns a media id for post --media-ids

Auth

  • Provider id: mastodon (credential is collected as custom.mastodon)
  • Collection: provider OAuth via the secure credential flow (credentials.request_api_access). Fully self-serve: register an app on your own instance with POST /api/v1/apps, or generate a personal token under Settings > Development on your instance.
  • Required scopes: read, write, follow, push (granular scopes such as write:statuses also work)
  • Allowed hosts: your Mastodon instance host, declared at connect time (the --host you pass, e.g. https://mastodon.social; it must start with http:// or https://). The credential is only ever sent to that host.
  • Status check: bin/mastodon.py verify --host <your-instance> (must return "ok": true)

Operating Rules

  1. post is a public write: confirm the text and visibility, plus any attachments, with the user before publishing, unless standing permission exists. Scheduled toots go out unattended, so confirm those too.
  2. Toots are limited to 500 characters; the CLI rejects anything longer rather than truncating, so keep posts short or split them.
  3. Instance rules apply: label bot accounts where your instance asks, and note that some instances disable open app registration.
  4. Reading (verify, my-posts, followers, media-upload) needs no confirmation.
  5. Never exfiltrate the credential: the CLI only ever handles surrogates (see bin/mastodon.py). Do not print, log, or transmit the token value.

Files

  • SKILL.md
  • bin/mastodon.py

Maturity

🧪 Draft: written from Mastodon's public API docs via the verified research dossier; not yet live-tested end-to-end.

© Anil-matcha, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in connectors/mastodon of Anil-matcha/awesome-muse-connectors.

  • SKILL.md
  • bin/mastodon.py

Open the folder on GitHubat commit d6dc5d8

Compare with similar skills

Mastodon next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Mastodon compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Mastodon this skillAnil-matcha/awesome-muse-connectors1.3k—~813Automated safety check: PassMIT
Expense Accountingsickn33/agentic-awesome-skills47k1 repos~6.5kAutomated safety check: PassMIT
Purchase Accountingsickn33/agentic-awesome-skills47k1 repos~5.1kAutomated safety check: PassMIT
Odoo Accounting Setupsickn33/agentic-awesome-skills47k2 repos~1kAutomated safety check: PassMIT
Repurpose Into A Postsickn33/agentic-awesome-skills47k1 repos~1.6kAutomated safety check: PassMIT
Why Did This Post Flopsickn33/agentic-awesome-skills47k1 repos~1.5kAutomated safety check: PassMIT

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Questions about Mastodon

What does Mastodon do?

Read and write Mastodon: verify the account, list own posts and followers, publish toots with native scheduling, upload media. Mastodon is an agent skill from Anil-matcha/awesome-muse-connectors. Read and write Mastodon: verify the account, list own posts and followers, publish toots with native scheduling, upload media.

When should I use Mastodon?

Mastodon fits situations like: phrases: mastodon; post to mastodon.

How do I install Mastodon in Claude Code?

Run `npx skills add Anil-matcha/awesome-muse-connectors --skill mastodon -a claude-code`. Or copy the skill folder (connectors/mastodon in Anil-matcha/awesome-muse-connectors) into .claude/skills/mastodon in your project. Claude Code loads it when a task matches its description.

How do I install Mastodon in Codex?

Run `npx skills add Anil-matcha/awesome-muse-connectors --skill mastodon -a codex`. Or copy the skill folder (connectors/mastodon in Anil-matcha/awesome-muse-connectors) into .agents/skills/mastodon in your project. Codex loads it when a task matches its description.

Can I use Mastodon in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Anil-matcha/awesome-muse-connectors --skill mastodon -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mastodon, .gemini/skills/mastodon, .github/skills/mastodon and .opencode/skills/mastodon in your project.

What does Mastodon need to run?

Going by SKILL.md and its folder, Mastodon needs Python for the scripts in its folder. Our summary lists: Python 3.

Does Mastodon access the network?

SKILL.md names 1 domain. In commands or code: mastodon.social; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Mastodon safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Mastodon use?

Mastodon is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Mastodon use?

About 813 tokens (SKILL.md is roughly 3.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Mastodon?

Skills that share tags, products or a category with Mastodon: Expense Accounting (sickn33/agentic-awesome-skills, 47k stars), Purchase Accounting (sickn33/agentic-awesome-skills, 47k stars), Odoo Accounting Setup (sickn33/agentic-awesome-skills, 47k stars) and Repurpose Into A Post (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Mastodon?

Anil-matcha (a GitHub user) maintains it in Anil-matcha/awesome-muse-connectors, which has 1,347 GitHub stars. The repository holds 153 skills in this directory. The repository was last updated on October 5, 2026.

Source: Anil-matcha/awesome-muse-connectors on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.