# Hex.pm MCP (remote · hexpm-mcp.fly.dev)

MCP server for hex.pm and hexdocs.pm: search, inspect, compare, and audit Elixir packages

- Trust score: 68/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `hexpm-mcp.fly.dev`: 68/100 (this document), [markdown](https://verifymcp.io/servers/joshrotenberg-hexpm-mcp/hexpm-mcp.md), [page](https://verifymcp.io/servers/joshrotenberg-hexpm-mcp/hexpm-mcp)

## Channel facts

- Endpoint: `https://hexpm-mcp.fly.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.3.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 24 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 82/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 1078 tokens (~43/item across 25 items; 24 tools + 1 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http joshrotenberg-hexpm-mcp https://hexpm-mcp.fly.dev/mcp
```

### Codex

```toml
[mcp_servers.joshrotenberg-hexpm-mcp]
url = "https://hexpm-mcp.fly.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "joshrotenberg-hexpm-mcp": {
      "type": "remote",
      "url": "https://hexpm-mcp.fly.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add joshrotenberg-hexpm-mcp --url https://hexpm-mcp.fly.dev/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  joshrotenberg-hexpm-mcp:
    url: "https://hexpm-mcp.fly.dev/mcp"
```

### Other

```json
{
  "mcpServers": {
    "joshrotenberg-hexpm-mcp": {
      "type": "http",
      "url": "https://hexpm-mcp.fly.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 67, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 67, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 67, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 65, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 65)

First indexed and scored.

## MCP tools (24)

### `alternatives` (~31 tokens)

Find and compare alternative packages for a given hex.pm package.

Input parameters:

- `name` (string, required): Package name on hex.pm

### `audit` (~62 tokens)

Audit a package's dependencies for risks.

Checks each dependency for retired versions, stale packages,
single-owner packages, and known vulnerabilities via OSV.dev.

Input parameters:

- `name` (string, required): Package name on hex.pm
- `version` (string): Release version (defaults to latest)

### `audit_mix_deps` (~56 tokens)

Audit mix.exs dependencies for risks.

Input parameters:

- `deps` (string, required): Mix.exs deps list as text, e.g. {:phoenix, "~> 1.7"}, {:ecto, "~> 3.10"}

### `compare` (~38 tokens)

Compare 2-5 hex.pm packages side by side.

Input parameters:

- `packages` (string, required): Comma-separated list of package names (2-5 packages)

### `dep_tree` (~72 tokens)

Get the full transitive dependency tree for a package (BFS, max depth 5).

Input parameters:

- `max_depth` (integer): Maximum depth to traverse (default 5, max 5)
- `name` (string, required): Package name on hex.pm
- `version` (string): Release version (defaults to latest)

### `dependencies` (~39 tokens)

Get dependencies for a package version.

Input parameters:

- `name` (string, required): Package name on hex.pm
- `version` (string): Release version (defaults to latest)

### `doc_item` (~59 tokens)

Get full documentation for a specific module or function.

Input parameters:

- `module` (string, required): Module name (e.g. "Plug.Conn")
- `name` (string, required): Package name on hex.pm
- `version` (string): Package version (defaults to latest)

### `docs` (~39 tokens)

Browse package documentation -- module listing.

Input parameters:

- `name` (string, required): Package name on hex.pm
- `version` (string): Package version (defaults to latest)

### `downloads` (~28 tokens)

Get download statistics for a hex.pm package.

Input parameters:

- `name` (string, required): Package name on hex.pm

### `features` (~42 tokens)

Get optional features/extras for a package release.

Input parameters:

- `name` (string, required): Package name on hex.pm
- `version` (string): Release version (defaults to latest)

### `health` (~28 tokens)

Comprehensive health check for a hex.pm package.

Input parameters:

- `name` (string, required): Package name on hex.pm

### `info` (~28 tokens)

Get detailed information about a hex.pm package.

Input parameters:

- `name` (string, required): Package name on hex.pm

### `owners` (~30 tokens)

Get owners/maintainers of a hex.pm package.

Input parameters:

- `name` (string, required): Package name on hex.pm

### `readme` (~43 tokens)

Get the README content for a hex.pm package.

Input parameters:

- `name` (string, required): Package name on hex.pm
- `version` (string): Package version (defaults to latest)

### `release` (~47 tokens)

Get detailed information about a specific package release.

Input parameters:

- `name` (string, required): Package name on hex.pm
- `version` (string, required): Release version (e.g. "1.8.5")

### `search` (~66 tokens)

Search for packages on hex.pm by name/keywords.

Input parameters:

- `page` (integer): Page number (default 1)
- `query` (string, required): Search query string
- `sort` (string): Sort by: name, recent_downloads, total_downloads, inserted_at, updated_at

### `search_docs` (~51 tokens)

Search within a package's documentation by name.

Input parameters:

- `name` (string, required): Package name on hex.pm
- `query` (string, required): Search query
- `version` (string): Package version (defaults to latest)

### `toolbox_category` (~80 tokens)

List the curated projects in an Elixir Toolbox category.

Input parameters:

- `category` (string, required): Category slug within the group (e.g. "frameworks")
- `group` (string, required): Group slug (e.g. "web", "ai")
- `sort` (string): Ordering: "name" (alphabetical) or "downloads"; defaults to popularity order

### `toolbox_group` (~37 tokens)

List the categories in a single Elixir Toolbox group.

Input parameters:

- `group` (string, required): Group slug (e.g. "web", "ai")

### `toolbox_groups` (~20 tokens)

Browse the Elixir Toolbox curated taxonomy of groups and categories.

### `toolbox_search` (~49 tokens)

Search packages via Elixir Toolbox. Results carry GitHub/GitLab stats,
popularity, and health signals not exposed by the raw hex.pm search.

Input parameters:

- `query` (string, required): Search query string

### `toolbox_trending` (~32 tokens)

List trending Elixir packages from Elixir Toolbox.

Input parameters:

- `limit` (integer): Maximum number of projects to return

### `upgrade_check` (~57 tokens)

Check which mix.exs dependencies have newer versions available.

Input parameters:

- `deps` (string, required): Mix.exs deps list as text, e.g. {:phoenix, "~> 1.7"}, {:ecto, "~> 3.10"}

### `versions` (~28 tokens)

List all versions of a hex.pm package.

Input parameters:

- `name` (string, required): Package name on hex.pm

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/joshrotenberg-hexpm-mcp/hexpm-mcp#diagnostics

## Score history

- 2026-08-03: 68
- 2026-08-02: 68
- 2026-08-01: 67
- 2026-07-31: 67
- 2026-07-30: 67
- 2026-07-29: 67
- 2026-07-28: 66
- 2026-07-27: 65
- 2026-07-26: 65

## Links

- Remote endpoint: https://hexpm-mcp.fly.dev/mcp
- Repository: https://github.com/joshrotenberg/hexpm-mcp
- Changelog RSS feed: https://verifymcp.io/servers/joshrotenberg-hexpm-mcp/hexpm-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/joshrotenberg-hexpm-mcp/hexpm-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/joshrotenberg-hexpm-mcp/hexpm-mcp