mastodon

Mastodon is a decentralized social networking platform (ActivityPub) that provides a server to host federated microblogging (posts, timelines, profiles, follows, likes/reblogs, etc.). The package refers to the Mastodon software/app used to run a Mastodon instance or integrate with its APIs.

Evaluated Mar 30, 2026 (30d ago)
Homepage ↗ Repo ↗ Communication social-networking federation activitypub mastodon rest-api moderation microblogging
⚙ Agent Friendliness
52
/ 100
Can an agent use this?
🔒 Security
68
/ 100
Is it safe for agents?
⚡ Reliability
41
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
0
Documentation
50
Error Messages
0
Auth Simplicity
65
Rate Limits
45

🔒 Security

TLS Enforcement
85
Auth Strength
75
Scope Granularity
60
Dep. Hygiene
55
Secret Handling
60

Security depends on the specific self-hosted instance configuration. Mastodon supports TLS and OAuth-based access control. However, as a self-hosted system, you must ensure secure server configuration (HTTPS, secure cookie/token handling, updated dependencies, and safe logging).

⚡ Reliability

Uptime/SLA
20
Version Stability
60
Breaking Changes
50
Error Recovery
35
AF Security Reliability

Best When

You need ActivityPub-compatible federation or want to operate/control a social platform instance and integrate through Mastodon’s published endpoints.

Avoid When

You require a turnkey commercial SaaS experience with SLAs, or you need a standardized API spec/SDK that is identical across all instances.

Use Cases

  • Run your own federated social network instance
  • Build client applications that interact with Mastodon via its REST API
  • Create automations that publish/update content on specific instances
  • Moderation tooling (e.g., reviewing reports, managing users)
  • Federated content ingestion/analytics (where permitted by instance API/policy)

Not For

  • Untrusted/anonymous high-volume public posting without auth and rate-limit planning
  • Projects needing a single centralized social network provider
  • Use cases requiring guaranteed stable webhooks/events across all instances (federation varies)

Interface

REST API
Yes
GraphQL
No
gRPC
No
MCP Server
No
SDK
No
Webhooks
No

Authentication

Methods: OAuth2 (Authorization Code / App OAuth) Bearer access tokens (instance/application tokens)
OAuth: Yes Scopes: Yes

Auth typically uses OAuth flows to obtain access tokens for user actions; Mastodon also uses OAuth applications with token scopes/permissions (exact scope names and availability can vary by API version).

Pricing

Free tier: No
Requires CC: No

Mastodon is open-source software; cost depends on where/how you host and operate the server/instance.

Agent Metadata

Pagination
cursor/limit (typical REST list endpoints use paging parameters like max_id/min_id, since_id/limit; varies by endpoint/API version)
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • Federation means behavior can differ across Mastodon versions/instances (timing, accepted parameters, moderation policies).
  • Pagination mechanisms differ by endpoint (some use max_id/min_id semantics rather than simple page numbers).
  • Rate limits and throttling can be enforced at instance level; plan retries/backoff carefully.
  • Idempotency is not guaranteed across create/update endpoints; duplicate actions may occur on retries without explicit safeguards.

Alternatives

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Scores are editorial opinions as of 2026-03-30.

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