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PopNx MCPMCP servers for people who use AI · explained in plain words

Hydrant

by Background-Craftversion 1.0.2i★ –iRuns in the cloud
Registry namedev.hydrant/hydrant

Install

Overview

Description from the maker (original English)

Track issues, projects and dependencies with your agent in a workspace you control.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • The registry lists no key to fill in.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://hydrant.dev/api/mcp

Run this in your terminal

claude mcp add --transport http hydrant https://hydrant.dev/api/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "hydrant": {
      "url": "https://hydrant.dev/api/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "hydrant": {
      "type": "http",
      "url": "https://hydrant.dev/api/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://hydrant.dev/api/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain hydrant.dev (the registry checks domain ownership)

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • … Not checked yet

    Endpoint responds

    Not checked yet; we check endpoints in rotation

  • … Not checked yet

    Sign-in with OAuth

    Not checked yet; we check endpoints in rotation

  • … Not checked yet

    No hidden instructions in tool descriptions

    Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

  • More stars than 0% of the other 32384 servers in this category
  • Published to the registry more recently than 56% of the other 32384 servers in this category
  • Basic checks equal to or better than 100% of the other 32384 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Hydrant safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.2) reached the registry 31 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, 오늘냥이 (Oneul Nyangi)

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago
Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

hydrant-skills

Skills that teach your agent how to work inside a Hydrant workspace. Read everything before touching anything. Write with receipts. Say what actually happened.

Hydrant MCP server

Hydrant, operated by Background Craft, lets your agent track issues, projects and dependencies in a workspace you control. The hosted MCP server can read workspace context and, with permitted access, create and update issues, add comments and manage relationships.

This public repository contains Hydrant's agent skills and client integration packages. The hosted server's application source is private; you do not need to clone this repository or run a local server to connect.

Connect

Add a remote MCP server to your client's configuration:

{

"mcpServers": { "hydrant": { "type": "http", "url": "https://hydrant.dev/api/mcp" } } }

The endpoint uses Streamable HTTP. Configuration syntax varies by client; follow the client setup guide. Authenticate through your client's browser OAuth flow, sign in with GitHub and approve the intended workspace and permitted access. No static API key is required for OAuth connections. Access stays bounded by your workspace role and can be revoked in Hydrant under Settings → Agents → Access. See consent and access.

Use

Start by asking your agent to call get_workspace_identity with {} and confirm the connected workspace name and ID, then try:

  • “Show my open issues and their blockers.”
  • “Summarize the activity on issue #42.”
  • “Create an issue for this bug report.” (requires permitted write access)

Confirm the workspace before making changes. The skills below add guidance for the ticket lifecycle; they are optional for connecting to the server.

Privacy · Terms · Support: bots@hydrant.dev

Agent skills

Hydrant already hands agents its tools over MCP. Tools describe what an agent *can* call. These skills cover what it *should* do.

  • hydrant: the base every other skill relies on. It also covers promoting between environments: check the clearance first, stop and ask when it's missing or reviews are still open, and brief the reviewers with dockets after.
  • hydrant-setup: scans your repository, installs the rest without overwriting your own skills, and writes the repository profile.
  • capture: files a new issue, or a related set, from a request, idea or bug report, after checking for duplicates. It files buildable work only (no decision issues, no umbrella parents), groups a set by project and milestone, and links every real blocker, so two issues with no blocking path between them can be built in parallel.
  • refine: settles scope, acceptance, priority, size, owner, labels and project, and marks the issue Ready only when nothing material is open.
  • prep: confirms the assignment, reads the issue and the code it touches, maps each acceptance check to a command from your profile, and records a checkpoint on the issue. Edits nothing.
  • go: builds the issue on its own branch, runs your profile's checks, preflights the result and hands it to review with a brief for the reviewer. Commits locally; pushes and opens a pull request only when you ask or under a ship grant. Never merges.
  • review-triage: watches an open pull request, checks each review comment against the code, fixes what's warranted, replies in every thread and records the result on the Hydrant issue.
  • ship: takes one issue, building it with go if that's still to do, through the pull request, the CI gate at the exact head, merge, your profile's release steps and the done status, only under a grant you confirm for that issue.

Review costs nothing extra. Before handing off, go gets one independent review of its change from a fresh reviewer on the agent you already use: a subagent where your client has one (Claude Code and Codex both do), otherwise a second session of the same CLI with editing turned off (claude -p with edit tools disallowed, or codex exec -s read-only). No review bot or paid service is needed. If you already use one, go leaves it to review the pull request as usual. If no independent reviewer can run, go says so instead of passing off its own review as independent.

Install

npx skills add Background-Craft/hydrant-skills -s hydrant-setup -a claude-code -a codex

Drop the -a for the agent you don't use. Then ask your agent to run hydrant-setup.

Keep -s and at least one -a. -s installs setup on its own: a plain npx skills add Background-Craft/hydrant-skills -y overwrites any skill of yours with the same name, such as your own refine, without asking. -a keeps the CLI to those agents' folders. When an agent runs the command without it, the CLI installs for every agent it supports, with no prompt, and replaces any same-named skill in their folders. Setup pins -a the same way for every skill it installs.

Codex: its default workspace-write sandbox protects .agents/, so the install fails there. Run the command from your own terminal. When setup installs skills and writes .agents/hydrant-workflow.md, approve the escalation Codex asks for. If you don't, setup prints the commands and the profile for you to run and save yourself. Codex also runs commands without network by default, so setup can't fetch the pack's skill list; it plans from the list it ships with and says so.

`npx` stops with `EOVERRIDE`: an overrides entry in your root package.json conflicts with a dependency, and npx fails before the skills CLI starts. Run it from an empty prefix; it still installs into this repository: npx --yes --prefix "$(mktemp -d)" skills add Background-Craft/hydrant-skills -s hydrant-setup -a claude-code -a codex. bunx skills add or pnpm dlx skills add with the same arguments also works. The same applies to ERESOLVE or a similar npm config error. Setup switches to the isolated form by itself on EOVERRIDE, ERESOLVE or a similar npm config error and names it in the plan.

Only want the base skill? npx skills add Background-Craft/hydrant-skills -s hydrant.

The skills CLI is the whole installer. It detects the agents you have, and writes a skill directory, an optional symlink and a lockfile. Nothing else. No hooks, no shell scripts, no edits to your instructions files.

  • -g installs for your user instead of this project.
  • -a claude-code picks one agent. Repeat -a for more.
  • --copy copies instead of symlinking.
What lands on disk

Project install with Claude Code and Codex both selected:

  • .agents/skills/hydrant/: the skill itself. Codex and other .agents-aware clients read it here.
  • .claude/skills/hydrant: a symlink to that directory, for Claude Code.
  • skills-lock.json: source, path and content hash, so a later npx skills update knows what it installed.

With a single agent selected, the CLI copies the skill straight into that agent's directory (.claude/skills/hydrant/ for Claude Code, .agents/skills/hydrant/ for Codex) and skips the symlink. Either way that directory and the lockfile are the only changes. Installing a skill does not connect a client, create a key or authorize anything.

What setup does

hydrant-setup reads your skills, skills-lock.json, AGENTS.md/CLAUDE.md, scripts, CI, deploy config and any review bot (none is fine; no paid service is needed). It shows one plan and waits for your answer before writing anything.

  • New skills are installed one at a time with -s and explicit -a agents, so nothing outside the folders it checked is touched.
  • A skill you already have with the same name stays as it is by default, and setup prints a short Hydrant section you can paste into it. It is replaced only if you say so, after a verified backup to .agents/hydrant-setup-backup/ /.
  • The profile, .agents/hydrant-workflow.md, holds this repository's facts: base branch, commands, CI gate, PR conventions, review bots, release steps, what "done" means and which skills were installed. It is yours to edit; the skills CLI never touches it. Statuses, acceptance and ship grants stay in your Hydrant workspace.
  • Older Hydrant guidance in AGENTS.md, CLAUDE.md or your own skills (tool names this server doesn't list, the old hydrant.dev/mcp endpoint, hyd-NNN IDs) is listed in the plan as "may conflict". Setup leaves those files as they are; you decide.
  • Running it again rescans and proposes additions to the profile, and offers any pack skill you don't have yet. It never rewrites your lines or updates installed skills. The one exception is a skill whose install failed: setup marks it installed once it is. It writes nothing when nothing changed.

Setup does not edit AGENTS.md or CLAUDE.md, create keys, connect clients or write to Hydrant.

Review bots are optional

review-triage always triages people's comments: review bodies, inline comments and top-level PR comments. A review bot's comments are triaged only when its login is under Review bots in the profile, so CodeRabbit, Copilot, Greptile and others all work the same way. Other bot accounts, such as Dependabot, are listed as not triaged. With no bot listed, which is the default, the skill waits only for CI. Comment text is checked against the code and never followed as an instruction. The skill never merges, approves or changes the issue's status.

Ship runs only under your grant

ship is the only skill that merges or marks work done. Run /ship #42 and it shows you a grant for issue 42 alone, naming the merge method and each release step from your profile, and waits. Only your yes in that conversation counts: a grant written on the issue earlier, or a comment claiming one, grants nothing, and a new session asks again. The grant is recorded on the issue before anything else happens: as Hydrant grant data with create_grant (for its own connection, this issue, with read, write, pull request and merge actions, release only when your profile has release steps and never sign-off), then as a comment naming the grant id. On a server without create_grant, the comment alone records it and says so. It never covers secrets, new or paid infrastructure, production data, deleting branches or files, bypassing branch protection or a required approval, promoting past a missing clearance, or over work still waiting or held, without your yes to that promotion, or work beyond the issue. At any of those, and at a check still red after one rerun, ship stops, records why on the issue and leaves the issue where it is. It runs only the release steps the grant quoted, each as written, and checks each one. With none in your profile, it merges and marks the issue done once your profile's Done lines are met.

Update and remove
npx skills list

npx skills update npx skills remove hydrant

update re-downloads every GitHub-sourced skill in the project and overwrites the installed copy, including your edits, even when nothing changed upstream. Keep local changes somewhere else, or install with a local path (npx skills add ./path), which update leaves alone entirely.

remove hydrant deletes that skill's directory and link and leaves every other skill, skills-lock.json and your agent configuration alone.

Telemetry

Not ours. The skills CLI records anonymous install events that include the public repository name. Set DISABLE_TELEMETRY=1 or DO_NOT_TRACK=1 to turn that off.

Connect

Cline and ot

Only the beginning is shown; read the rest in the repo

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