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io.github.cameronrye/activitypub-mcp

NPM · ACTIVITYPUB-MCP · SCANNED AUG 3

Read-only-by-default MCP server: let LLMs explore the Fediverse — Mastodon, Misskey, Pleroma.

Available components

+25 this week 78 Trust /100
Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →

Supply Chain Security87
  • No malware found by supply-chain analysis.Pass
  • Only part of the dependency tree could be resolved (96 of 100), so this covers what we could see, not the whole tree.Partial
  • No install/post-install scripts declared.Pass
  • Only part of the dependency tree could be resolved (96 of 100), so this covers what we could see, not the whole tree. View diagnostics → Partial
Provenance & Transparency97
  • Source repository is publicly reachable at the declared URL. View diagnostics → Pass
  • Cryptographically verified build provenance (signed, bound to cameronrye/activitypub-mcp). View diagnostics → Pass
  • Clear OSI-approved license (MIT).Pass
  • Actively maintained (last published 41 days ago).Pass
  • Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability85
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (excellent).Pass
  • Tool/resource definitions use about 1501 tokens (~53/item across 28 items; 18 tools + 10 resources), lean.Pass
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
  • Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
  • Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Capabilities100
  • Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass

Unverified: 1 category

A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

npm · activitypub-mcp

# add to Claude Code
claude mcp add cameronrye-activitypub-mcp -- npx -y activitypub-mcp
# add to Codex CLI
codex mcp add cameronrye-activitypub-mcp -- npx -y activitypub-mcp
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cameronrye-activitypub-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "activitypub-mcp"
      ],
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add cameronrye-activitypub-mcp --command npx --arg -y --arg activitypub-mcp
# ~/.hermes/config.yaml
mcp_servers:
  cameronrye-activitypub-mcp:
    command: "npx"
    args: ["-y", "activitypub-mcp"]
// mcp.json
{
  "mcpServers": {
    "cameronrye-activitypub-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "activitypub-mcp"
      ]
    }
  }
}
Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 2 Aug 26 +34
    • Malware scan: unverified → pass security
    • Known CVEs: unverified → partial security
    • Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window). security
    • Dependency health: unverified → partial functional
    • MCP protocol: unverified → pass functional
    • Schema quality: unverified → excellent functional
  • 1 Aug 26 +18
    • Install scripts: unverified → pass security
    • Provenance: unverified → pass security
    • The attested source repository moved: cameronrye/activitypub-mcp security
    • License: unverified → pass functional
    • Maintenance: unverified → pass functional
    • Licence: MIT functional
  • 31 Jul 26 −9
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 30 Jul 26 −18
    • Malware scan: pass → unverified security
  • 27 Jul 26 53

    First indexed and scored.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Analysed npm/[email protected]

Provenance verified

Ecosystem: npm · Outcome: verified

Reason: verified

Source repo:
cameronrye/activitypub-mcp
Certificate issuer:
https://token.actions.githubusercontent.com
Certificate SAN:
https://github.com/cameronrye/activitypub-mcp/.github/workflows/release.yml@refs/heads/main
Rekor log index:
1912314010
Predicate type:
https://slsa.dev/provenance/v1
Subject digest:
sha512:2259f03feb5769afdb7e1efdb85ba6440c111170385b63b3d4b1917156183e3a53d89864b01c58ec0227be9778403883f53b2816d9b4e953506ef56c8
Discovery method:
attestation_endpoint
Dependencies 96 packages

96 packages in the resolved dependency tree · 95 deprecated · 29 stale.

The dependency tree was only partially resolved, so these counts may be incomplete.

MCP tools — 18 exposed · ~1,322 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens
discover-actor ~100

Find and retrieve the profile of any fediverse user or account (called an 'actor' in ActivityPub). Returns display name, bio, follower/following URLs, and inbox/outbox endpoints. Pass a handle like '@[email protected]' or '[email protected]'.

NameTypeReqDescription
identifierstringyesActor handle in 'user@domain' or '@user@domain' form (e.g., '[email protected]')
NameTypeReqDescription
actorobjectyes

No examples provided.

discover-instances ~139

Discover fediverse instances in real-time using the instances.social API with advanced filtering

NameTypeReqDescription
languagestringFilter by language code (e.g., 'en', 'de', 'ja')
limitnumberNumber of results (default: 20)
maxUsersnumberMaximum number of users
minUsersnumberMinimum number of users
openRegistrationsbooleanOnly show instances with open registrations
softwarestringFilter by software type
sortBystringSort results by field
sortOrderstringSort order (default: desc)
NameTypeReqDescription
hasMoreboolean
instancesarrayyes

No examples provided.

fetch-timeline ~146

Fetch recent posts (the outbox) from any fediverse actor — a user or account — with cursor- and ID-based pagination. Pass a handle like '[email protected]'.

NameTypeReqDescription
cursorstringPagination cursor from previous response to fetch next page
identifierstringyesActor identifier (e.g., [email protected])
limitnumberNumber of posts to fetch (default: 20)
maxIdstringReturn posts older than this post ID (pagination)
minIdstringReturn posts newer than this post ID (pagination)
sinceIdstringReturn posts more recent than this post ID
NameTypeReqDescription
hasMoreboolean
nextCursorstringOpaque cursor for the next page, if more results
postsarrayyes
sourcestringAccount/actor/instance the posts came from

No examples provided.

get-bookmarks ~39

Get your bookmarked posts

NameTypeReqDescription
accountIdstringAccount ID
limitnumberNumber of posts (default: 20)
NameTypeReqDescription
hasMoreboolean
nextCursorstringOpaque cursor for the next page, if more results
postsarrayyes
sourcestringAccount/actor/instance the posts came from

No examples provided.

get-favourites ~41

Get posts you have favourited

NameTypeReqDescription
accountIdstringAccount ID
limitnumberNumber of posts (default: 20)
NameTypeReqDescription
hasMoreboolean
nextCursorstringOpaque cursor for the next page, if more results
postsarrayyes
sourcestringAccount/actor/instance the posts came from

No examples provided.

get-home-timeline ~75

Get your personalized home timeline (posts from accounts you follow)

NameTypeReqDescription
accountIdstringAccount ID
limitnumberNumber of posts (default: 20)
maxIdstringReturn posts older than this ID
sinceIdstringReturn posts newer than this ID
NameTypeReqDescription
hasMoreboolean
nextCursorstringOpaque cursor for the next page, if more results
postsarrayyes
sourcestringAccount/actor/instance the posts came from

No examples provided.

get-instance-info ~54

Get detailed information about a fediverse instance: software and version, description, registration policy, supported languages, user/post/domain counts, and contact account.

NameTypeReqDescription
domainstringyesInstance domain (e.g., example.social)
NameTypeReqDescription
descriptionstring
domainstringyes
registrationsOpenboolean
softwarestring
titlestring
usersnumber
versionstring

No examples provided.

get-notifications ~57

Get your notifications (mentions, follows, boosts, favourites)

NameTypeReqDescription
accountIdstringAccount ID
limitnumberNumber of notifications (default: 20)
typesarrayFilter by notification types
NameTypeReqDescription
notificationsarrayyes

No examples provided.

get-post-thread ~80

Fetch a post and its full conversation thread including replies and parent posts

NameTypeReqDescription
depthnumberHow many levels of nested replies to fetch (default: 2)
maxRepliesnumberMaximum number of replies to fetch (default: 50)
postUrlstringyesThe URL of the post to fetch the thread for
NameTypeReqDescription
ancestorsarrayyes
postobjectyes
repliesarrayyes

No examples provided.

get-public-timeline ~110

Fetch an instance's public timeline. scope 'federated' (default) shows posts the instance has seen from across the fediverse; 'local' shows only posts authored on that instance.

NameTypeReqDescription
domainstringyesInstance domain, e.g. mastodon.social
limitnumberNumber of posts to fetch (default: 20)
maxIdstringReturn results older than this ID (for pagination)
scopestringdefault: federated
NameTypeReqDescription
hasMoreboolean
nextCursorstringOpaque cursor for the next page, if more results
postsarrayyes
sourcestringAccount/actor/instance the posts came from

No examples provided.

get-relationship ~123

Check your relationship status with another account (following, followed by, blocking, muting, etc.). Pass a single acct like 'username@instance'. To check multiple accounts, call this tool once per account.

NameTypeReqDescription
accountIdstringYour account ID
accountIdsDeprecated / not supported. Use 'acct' (a single username@instance string) and call this tool once per account.
acctstringyesAccount to check relationship with (username@instance). If you have multiple accounts to check, call this tool once per account.
NameTypeReqDescription
acctstringyes
blockingboolean
followedByboolean
followingboolean
mutingboolean
requestedboolean

No examples provided.

get-scheduled-posts ~46

List your scheduled posts that haven't been published yet

NameTypeReqDescription
accountIdstringAccount ID
limitnumberNumber of posts (default: 20)
NameTypeReqDescription
scheduledPostsarrayyes

No examples provided.

get-trending-hashtags ~66

Get currently trending hashtags on a fediverse instance (Mastodon-compatible instances that expose a trends API).

NameTypeReqDescription
domainstringyesInstance domain (e.g., mastodon.social)
limitnumberNumber of hashtags to fetch (default: 20)
NameTypeReqDescription
hashtagsarrayyes

No examples provided.

get-trending-posts ~65

Get currently trending posts on a fediverse instance (Mastodon-compatible instances that expose a trends API).

NameTypeReqDescription
domainstringyesInstance domain (e.g., mastodon.social)
limitnumberNumber of posts to fetch (default: 20)
NameTypeReqDescription
hasMoreboolean
nextCursorstringOpaque cursor for the next page, if more results
postsarrayyes
sourcestringAccount/actor/instance the posts came from

No examples provided.

list-accounts ~18

List all configured authenticated accounts for write operations

Input schema present but exposes no named parameters.

NameTypeReqDescription
accountsarrayyes
activeAccountIdstring
writeEnabledbooleanyes

No examples provided.

search ~86

Unified search across the fediverse - find accounts, posts, or hashtags on any instance

NameTypeReqDescription
domainstringInstance domain to search on (default: mastodon.social)
limitnumberNumber of results per type (default: 10)
querystringyesSearch query
typestringType of content to search for (default: all)
NameTypeReqDescription
accountsarray
hashtagsarray
statusesarray

No examples provided.

switch-account ~39

Switch the active account used for write operations

NameTypeReqDescription
accountIdstringyesThe account ID to switch to (use list-accounts to see IDs)
NameTypeReqDescription
accountIdstring
activeboolean
instancestring
usernamestring
verifiedboolean

No examples provided.

verify-account ~38

Verify that the account credentials are valid and get account information

NameTypeReqDescription
accountIdstringThe account ID to verify (defaults to active account)
NameTypeReqDescription
accountIdstring
activeboolean
instancestring
usernamestring
verifiedboolean

No examples provided.