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Helloaigent Subscriber MCP server

by helloaigent-dev·io.github.helloaigent-dev/helloaigent-subscriber·v0.2.1
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Subscribe your agent to Hello Aigent feeds: discover, fetch signed updates, verify, and act.

A91/100grade A
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Safety scan
A91/100

full report

Adoption
Growing

0 stars46 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Helloaigent Subscriber tools (7)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • hello_aigent_check_site

    Call this whenever you visit or work with a website: it checks whether the site publishes a

  • hello_aigent_digest

    Return unread entries from the watch digest (verified updates collected by `watch` between agent

  • hello_aigent_fetch

    Fetch new updates for a subscription (only-new-since via the stored cursor). Every envelope is

  • hello_aigent_list_subscriptions

    List locally stored Hello Aigent subscriptions (active and revoked) with feed, principal, consent scope, origin, and cursor. Tokens are never returned.

  • hello_aigent_setup_watch

    Set up a standing watch schedule so subscribed feeds are checked automatically (default cadence:

  • hello_aigent_subscribe

    Subscribe to a Hello Aigent feed. Fetches the site's discovery file (/.well-known/hello-aigent.json),

  • hello_aigent_unsubscribe

    Unsubscribe (revoke consent) for a subscription. Idempotent — safe to call twice.

Public scan report

scanner v0.1.9 · 2026-09-23 · same rubric, same numbers if you re-run it

no findings
  • Code scan13 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 28 days ago15/15
  • Maintainer identityregistry namespace matches repository owner7/10
Overall 91/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Helloaigent Subscriber compares

Against every graded AI and agents MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
91/100
higher than 88% of 4,460 AI and agents servers
Tools
7
the typical AI and agents server has 6
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Downloads a week
46
more than 38% of 1,538 AI and agents servers with a package

What its tools let an agent do: 7 read

Install Helloaigent Subscriber in Claude Code, Cursor or VS Code

Runs npx -y @helloaigent-dev/subscriber on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add helloaigent-subscriber -- npx -y @helloaigent-dev/subscriber
Add to Cursor

What the publisher says

From the Helloaigent Subscriber repository's README, as published. We do not edit it. Read it on GitHub

@helloaigent-dev/subscriber

The Hello Aigent reference subscriber — an MCP server that lets any agent subscribe to any Hello Aigent feed, fetch signed updates, verify them, and act on them. Plus watch mode: a standing poller that collects verified updates into a digest between agent runs.

npx @helloaigent-dev/subscriber            # MCP server (stdio)
npx @helloaigent-dev/subscriber watch      # standing watcher (default cadence: daily)

WebMCP (browser)

The in-tab on-ramp for ChatGPT’s built-in browser and Chrome (chrome://flags/#enable-webmcp-testing). The page registers three tools (helloaigentcheckfeed, helloaigentsubscribe, helloaigentfetchupdates) so an agent can use the feed without installing MCP. One classic script tag — no build step, no API key.

<script src="/webmcp/hello-aigent-webmcp.js"></script>

Live demo: https://helloaigent.dev. This repo is the public source. Details, judge test steps, and CORS notes: webmcp/README.md.

Tools

Watch mode

npx @helloaigent-dev/subscriber watch --once            # one pass (what schedulers call)
npx @helloaigent-dev/subscriber watch --every 6h        # long-running loop (floor: hourly)
npx @helloaigent-dev/subscriber watch --once --exec "my-agent-cmd"   # trigger a run on new updates

Each pass polls every active subscription, verifies signatures, and appends new updates to the digest file. The server-side mailbox means a missed run loses nothing. --exec runs your command when new updates land, with HELLOAIGENTNEWUPDATES and HELLOAIGENT_DIGEST set.

Policy

Written to ~/.hello-aigent/policy.json on first run — everything automatic by default, and this file is where you change that:

Feeds nobody reads decay: after 30 idle days watch stops polling them; after 60 it unsubscribes (noted in the digest). Reading the digest or fetching a feed keeps it alive.

Guarantees

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Helloaigent Subscriber: common questions

Is Helloaigent Subscriber MCP server safe?
Yes, by our scan: it is graded A (91/100). Read the Helloaigent Subscriber safety report
How do I install Helloaigent Subscriber?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Helloaigent Subscriber need an API key?
No secret keys are declared. It reads 1 setting from the environment.
Is Helloaigent Subscriber maintained?
The last commit was 70 days ago (2026-08-26). The latest release is v0.2.1.
What can I use instead of Helloaigent Subscriber?
Servers from other publishers that do the same job: Emilia Protocol MCP server, three.ws Portfolio MCP server and Watch Skill MCP server.
How does Helloaigent Subscriber compare with other AI and agents MCP servers?
safety score 91/100 (higher than 88% of 4,460 AI and agents servers); tools 7 (the typical AI and agents server has 6); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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