Is io.github.helloaigent-dev/helloaigent-subscriber safe to use?

io.github.helloaigent-dev/helloaigent-subscriber has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.

How do I install io.github.helloaigent-dev/helloaigent-subscriber?

io.github.helloaigent-dev/helloaigent-subscriber supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can io.github.helloaigent-dev/helloaigent-subscriber do?

io.github.helloaigent-dev/helloaigent-subscriber provides 3 tools: Tools, Policy, Guarantees. See the full tools list on the server page for descriptions and parameters.

What AI clients work with io.github.helloaigent-dev/helloaigent-subscriber?

io.github.helloaigent-dev/helloaigent-subscriber is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.

Is io.github.helloaigent-dev/helloaigent-subscriber actively maintained?

io.github.helloaigent-dev/helloaigent-subscriber is actively maintained — last commit was 2 days ago.

io.github.helloaigent-dev/helloaigent-subscriber

@helloaigent-dev/subscriber

Subscribe your agent to Hello Aigent feeds: discover, fetch signed updates, verify, and act.

68/wk 3 tools GitHub npm

No known CVEs

MIT license

Actively maintained

Last commit 2d ago

Works with most clients

Transport: stdio, sse

3 tools · ~107 tok

Grade A · 0.1% of 200K ctx

MCPpedia last refreshed this data 18h ago

Edit this pageView history

io.github.helloaigent-dev/helloaigent-subscriber is an MCP server that subscribe your agent to Hello Aigent feeds: discover, fetch signed updates, verify, and act. Its tool list has not been published yet over stdio and sse, requires no API key, and scores 87/100 on MCPpedia's security, maintenance and efficiency rubric.

Other

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "hello-aigent": {
      "args": [
        "@helloaigent-dev/subscriber"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-helloaigent-dev-helloaigent-subscriber)](https://mcppedia.org/s/io-github-helloaigent-dev-helloaigent-subscriber)

Read me

What io.github.helloaigent-dev/helloaigent-subscriber does

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.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@helloaigent-dev/subscriber' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

87/100across 5 weighted dimensions

How we score →

0255075100

−13

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @helloaigent-dev/subscriber against OSV.dev.

Inventory

Tools (3)

Click any tool to inspect its schema.

~107 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.helloaigent-dev/helloaigent-subscriber safe to use?: io.github.helloaigent-dev/helloaigent-subscriber has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install io.github.helloaigent-dev/helloaigent-subscriber?: io.github.helloaigent-dev/helloaigent-subscriber supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.github.helloaigent-dev/helloaigent-subscriber do?: io.github.helloaigent-dev/helloaigent-subscriber provides 3 tools: Tools, Policy, Guarantees. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.github.helloaigent-dev/helloaigent-subscriber?: io.github.helloaigent-dev/helloaigent-subscriber is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
Is io.github.helloaigent-dev/helloaigent-subscriber actively maintained?: io.github.helloaigent-dev/helloaigent-subscriber is actively maintained — last commit was 2 days ago.

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Community

Discussion

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Other

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "hello-aigent": {
      "args": [
        "@helloaigent-dev/subscriber"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-helloaigent-dev-helloaigent-subscriber)](https://mcppedia.org/s/io-github-helloaigent-dev-helloaigent-subscriber)

Read me

What io.github.helloaigent-dev/helloaigent-subscriber does

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@helloaigent-dev/subscriber' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

@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)

Tools

Tool	What it does
`hello_aigent_subscribe(discovery_url, feed_id?, principal?, consent_scope?)`	Reads the site's `/.well-known/hello-aigent.json`, subscribes (defaults come from your policy)
`hello_aigent_fetch(subscription_id?, max?)`	Pulls only-new-since updates via the stored cursor; verifies every envelope signature
`hello_aigent_unsubscribe(subscription_id)`	Revokes consent (idempotent) — the one-call undo
`hello_aigent_list_subscriptions()`	Lists stored subscriptions (tokens are never exposed)
`hello_aigent_check_site(url)`	Checks a site you're visiting for a feed; auto-subscribes per your standing policy (`origin: auto`)
`hello_aigent_digest()`	Returns unread digest entries collected by `watch` and marks them surfaced
`hello_aigent_setup_watch(cadence?)`	Emits ready-to-apply standing-schedule recipes (scheduled task, recurring task, cron)

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 HELLO_AIGENT_NEW_UPDATES and HELLO_AIGENT_DIGEST set.

Policy

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

Key	Default	Meaning
`principal`	`user@host`	Your stable identity across all feeds — set it once (e.g. your email)
`auto_subscribe`	`on`	Subscribe when your agent visits a Hello Aigent site: `on` / `ask` / `off`
`watch_cadence`	`daily`	How often watch polls (`hourly` floor)
`act`	`safe`	What the agent may do unprompted: `none` / `safe` (side-effect-free) / `thresholds`
`pseudonymous`	`false`	Opt-in: per-site pseudonymous principals

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

Signature verification before anything is actionable. Envelopes are Ed25519-verified (RFC 8785 JCS canonicalization) against the feed's discovery public key. Anything that fails verification is returned under unverified with its actions stripped.
Consent is standing policy. Subscribing records principal + consent_scope; your policy file is the consent layer, and unsubscribe is always one idempotent call.
Local state only. Subscriptions (including bearer tokens), policy, and the digest live in ~/.hello-aigent/ (mode 0600). Override with HELLO_AIGENT_STATE / HELLO_AIGENT_POLICY / HELLO_AIGENT_DIGEST.

MCP client config

{
  "mcpServers": {
    "hello-aigent": { "command": "npx", "args": ["@helloaigent-dev/subscriber"] }
  }
}

Cursor / Grok Bot plugin

This repo is also packaged as an Agent Plugins bundle (MCP + skill) that Cursor and Grok Bot can load. Cursor Marketplace plugins are that same format — there is no separate Grok Bot package. This plugin is not listed on the Cursor Marketplace yet.

1. Custom MCP connector (works today)

Point any

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

87/100across 5 weighted dimensions

How we score →

0255075100

−13

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @helloaigent-dev/subscriber against OSV.dev.

Inventory

Tools (3)

Click any tool to inspect its schema.

~107 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.helloaigent-dev/helloaigent-subscriber safe to use?: io.github.helloaigent-dev/helloaigent-subscriber has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install io.github.helloaigent-dev/helloaigent-subscriber?: io.github.helloaigent-dev/helloaigent-subscriber supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.github.helloaigent-dev/helloaigent-subscriber do?: io.github.helloaigent-dev/helloaigent-subscriber provides 3 tools: Tools, Policy, Guarantees. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.github.helloaigent-dev/helloaigent-subscriber?: io.github.helloaigent-dev/helloaigent-subscriber is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
Is io.github.helloaigent-dev/helloaigent-subscriber actively maintained?: io.github.helloaigent-dev/helloaigent-subscriber is actively maintained — last commit was 2 days ago.