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x402Agents can buy their own day pass

MCP servers and agent skills, tested like the rest of your stack

Hosted MCP servers with real analyzers behind them, and persona bundles built on SKILL.md. We try to break every release before it reaches you, and the free tier doesn’t expire.

Connect your agent Score your site for agents
MCP URLhttps://mcp.moltlinestudio.com/catalog

Paste it into Claude, Cursor, Codex CLI or anything else that speaks Streamable HTTP.

Agent sessionfree tier, no key

How many working days are there between 3 November and 18 December? We’re closed for Thanksgiving and the day after.

timeops.business_daysmcp.moltlinestudio.com/timeops

arguments

{
  "start_date": "2026-11-03",
  "end_date": "2026-12-18",
  "holidays": ["2026-11-26", "2026-11-27"]
}

result

{
  "business_days_between": 31,
  "from": "2026-11-03",
  "to": "2026-12-18"
}

31 business days between those dates, not counting weekends or 26–27 November.

A real call to the free timeops server. No account, no API key.
22MCP servers
160working tools
110free forever
138personas & skills

Catalog

What we make

There are three catalogs, and all of them are held to the same bar. Each product spells out its rules and its limits, and it treats untrusted input as material to work on, never as instructions to follow.

MCP servers

Working tools over MCP

Code review and AI-code verification, agent governance audits, SKILL.md linting, analytics, email deliverability, readability and a humanizer. Each one is a real analyzer with its own logic, and every server has a free tier.

All 22 servers and their tools

Also hosted on MCPize. Search for “Moltline”.

Skills & personas

138 persona bundles

Sales outbound, education, developer tooling, creative work, operations and personal ops. Each bundle is a full persona plus three focused skills, and every product has a free gateway skill you can try first.

---
name: devflow-engineer
description: Write a clean conventional commit message from a diff or change description.
version: 1.0.0
---

On Agensi, listed under the creator “GarphenGate”.

Kits

Category kits

12 kits, each made of several bundles, for teams that want a whole category covered at once. One kit carries the entire outbound motion. Another covers a full teaching practice.

Browse them free on the catalog MCP server. All-Access unlocks them.

Connect

One command in Claude Code

claude mcp add --transport http \
  moltline-catalog --scope user \
  https://mcp.moltlinestudio.com/catalog

# then check it came up
claude mcp list

Cursor, Codex CLI and anything else that speaks MCP Streamable HTTP take the same URL unchanged.

Connection guide

Agent checkout

Agents pay over x402

GET https://moltlinestudio.com/api
HTTP/2 402
{
  "x402Version": 2,
  "accepts": [{
    "scheme": "exact",
    "network": "eip155:8453",
    "amount": "19000000",
    …
  }]
}

An agent can buy access by itself, with no account and no form. 19000000 is 19 USDC on Base, and the license key comes back in the response.

Read the protocol notes

How we ship

What you can hold us to

These apply to every product we sell. The free tier doesn’t expire, and the support terms are in writing.

  1. 01

    We try to break it first

    Every release is versioned, and we try to break it before it reaches you.

  2. 02

    Limits in plain words

    Each product spells out its rules and tells you plainly what it can’t do.

  3. 03

    Input is data, not orders

    Untrusted input is material to work on, never instructions to follow.

  4. 04

    Support with deadlines

    A first response within 24 hours, and confirmed defects fixed within 30 days.

Registries

Listed on

Independent registries and directories that carry the Moltline fleet. Each entry is a live third-party page, so you can open any of them and check this site against it.

Official MCP Registrycom.moltlinestudio/* · 22 servers MCPize22 servers listed Glama22 connectors · ownership verified Glama (bridge repo)License / Quality / Maintenance A Smitherynamespace techdpr · servers & skills cursor.directory138 agent personas & skills Clawmartagent catalog · streamable-HTTP Agensicreator GarphenGate · SKILL.md bundles AlternativeTosoftware directory LaunchBufffeatured · developer tools Featured on LaunchBuff

Pricing

One license key, every premium tool

$19 is the individual price, set on purpose in the same band as the other tools on a developer's card. That price doesn't suit everyone. A company can't put a personal subscription through procurement, and an agent that wants one analysis shouldn't have to buy a month. So there are three other ways in.

Moltline All-AccessIndividual
$19/month

One license key for every premium tool on every Moltline MCP server.

  • Premium tools on all 22 Moltline MCP servers, including any we add later
  • Security deep-dives, governance policies, full personas and premium skill packs
  • Your key appears on screen once payment confirms, and we email a copy. It renews with your subscription.
  • Works anywhere MCP does, including Claude, Cursor, Codex CLI and Gemini CLI
  • Cancel whenever you like. The key keeps working until the end of the period you paid for.

Pay in ETH, USDT, SOL or any of 300+ coins through NOWPayments. The key shows up on screen when the payment confirms, and a copy goes to your email. Bundles on the Agensi marketplace are one-time purchases, sold separately.

Team

$99/month

Five seats on one invoice, so it goes through expenses instead of someone's personal card. Support is same-day, from a named contact rather than a shared inbox, and there's one renewal date your finance team won't need to query.

Ask about Team

Company

$399/month

Unlimited seats across the organization and a written response-time commitment. If your security review needs the servers inside your perimeter, we can run a private deployment on your own infrastructure. Billing is by purchase order and invoice.

Ask about Company

Agent checkout

2 USDC/dayor 19 a month

An autonomous agent can buy access by itself, with no account to create and no form to fill in. It pays 2 USDC on Base at /api/premium/day-pass for every premium tool until the end of the next UTC day, or 19 USDC at /api for the full month. Payment goes through the x402 challenge live on this domain, and the licence key comes back in the response. Few vendors offer this yet. The discovery crawlers already ask for it, and we see them in our logs every day.

How the payment flow works

Questions

FAQ

How does the license work?

When your payment confirms, a signed MOLT- key appears on screen and we email you a copy. Paste it into the credential field of any Moltline server (MCPize asks for it once). The servers check the key offline, so there's no account, no cookies and no cross-site tracking.

What stays free?

The free tier of every server, which comes to 110 free tools across 22 servers. Each of the 138 bundles also has a free gateway skill, on GitHub and through the catalog server. Free stays free. Premium adds depth on top, and we don't hold the basics hostage to sell it.

Is this a subscription for the Agensi bundles too?

No. Agensi bundles are one-time purchases made on Agensi. All-Access covers the premium tools on Moltline’s MCP servers.

What support do I get?

A first response within 24 hours, and confirmed defects fixed within 30 days. That commitment is written into every listing.

Support

A person answers, and the commitments are in writing. Email support@moltlinestudio.com about license problems, refunds, tool defects or integration help. You'll get a first response within 24 hours, and confirmed defects are fixed within 30 days. Put your order ID or license key in the message and it reaches the right place faster.

Email support

Engineering notes

From the blog

The three newest posts on community.moltlinestudio.com, engineering notes on MCP servers and agent protocols. This list is regenerated from the blog's own feed every morning, so it is never older than the blog.

All posts