Twilio Developer Kit vs PhoneCheck
Twilio Developer Kit is a plugin bundle for AI coding tools published by Twilio. Marketplaces we read that list it: 1 (Codex: openai-curated (openai/plugins)). PhoneCheck is an MCP server published by phonecheck.mike-tusa.workers.dev. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-16. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace | ||
|---|---|---|
| Codex: openai-curated (openai/plugins) | Listed Version: 0.2.2 Forks (GitHub): 970 Stars (GitHub): 7 455 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.2.1 No figure published Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Twilio Developer Kit | PhoneCheck |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 7 455 | No figure on GitHub |
| Forks (GitHub) (differs) | 970 | No figure on GitHub |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (phonecheck.mike-tusa.workers.dev/mcp) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 55 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/openai/plugins | Not stated |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen (differs) | 2026-10-11 | 2026-10-12 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 25 h ago |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
Twilio Developer Kit
Twilio Skills provide procedural knowledge for AI coding agents — which APIs to use, in what order, and what to avoid. Covers Messaging, Voice, Verify, SendGrid, and 30+ products.
PhoneCheck
Offline phone-number validation and formatting (E.164, region, line type). No carrier lookup.
How to run each
Twilio Developer Kit As a Codex plugin
codex plugin marketplace add openai/pluginsPhoneCheck As a remote MCP server
claude mcp add --transport http phonecheck https://phonecheck.mike-tusa.workers.dev/mcp --header "Authorization: Bearer <YOUR_TOKEN>"Requires: Authorization header
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only PhoneCheck has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: Twilio Developer Kit · What it can do: PhoneCheck · Compare two other plugins
Data comes from the public marketplace file https://github.com/openai/plugins/blob/HEAD/.agents/plugins/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.