uttero vs io.github.Leximo-AI/leximo-ai-call-assistant-mcp-server
uttero is a plugin bundle for AI coding tools published by utterodev. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). io.github.Leximo-AI/leximo-ai-call-assistant-mcp-server is an MCP server published by Leximo-AI. Marketplaces we read that list it: 2 (Official MCP Registry, Community GitHub marketplaces). As of our marketplace pass on 2026-10-13. 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 |  uttero |  io.github.Leximo-AI/leximo-ai-call-assistant-mcp-server |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 1.2.0 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.1 Downloads/month (npm): 160 Downloads/week (npm): 33 Forks (GitHub): 2 Stars (GitHub): 2 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 | uttero | io.github.Leximo-AI/leximo-ai-call-assistant-mcp-server |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 0 (worse) | 2 (better) |
| Forks (GitHub) (differs) | 0 (worse) | 2 (better) |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (leximo-ai-call-assistant-mcp-server) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 1, secrets among them: 1 |
| Parts of the bundle (differs) | 4 | 1 |
| Licence | MIT | MIT |
| Repository (differs) | github.com/utterodev/uttero-plugins | github.com/leximo-ai/leximo-ai-call-assistant-mcp-server |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen (differs) | 2026-10-12 | 2026-10-11 |
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
uttero
Uttero is a voice channel that lets Claude Code take and make phone calls during a coding session. An incoming call arrives as a channel notification; Claude hears the caller's transcription, speaks back via TTS through the `reply` tool, and keeps editing your codebase between turns. Works like a live collaborator who happens to be on a phone line. Tools exposed: reply (speak), call_user (outbound), end_call, list_calls. Audio, transcription, and TTS are handled by Uttero's hosted backend (api.uttero.dev). The plugin itself is ~500 lines of TypeScript that speaks MCP stdio and authenticated HTTPS. Credentials are stored locally at ~/.uttero/credentials.json (mode 600) and never shared with callers. The plugin deliberately omits `capabilities.experimental['claude/channel/permission']` so voice callers cannot approve Bash/Write/Edit tool use.
io.github.Leximo-AI/leximo-ai-call-assistant-mcp-server
Schedule AI phone calls, manage assignments, and check credits from Claude.
How to run each
uttero As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install uttero@claude-communityio.github.Leximo-AI/leximo-ai-call-assistant-mcp-server As a local MCP server: npm package
claude mcp add --env "LEXIMO_API_TOKEN=<YOUR_LEXIMO_API_TOKEN>" --transport stdio leximo-ai-call-assistant-mcp-server -- npx -y leximo-ai-call-assistant-mcp-serverRequires: LEXIMO_API_TOKEN (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
The marketplaces of uttero publish no settings it asks for, so we do not compare settings.
What it can do: uttero · What it can do: io.github.Leximo-AI/leximo-ai-call-assistant-mcp-server · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from public marketplace files in GitHub repositories of their authors. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.