com.moltlinestudio/dropship — Model Context Protocol (MCP) Server

This MCP server acts as a thin, dependency-free stdio bridge to Moltline Studio’s hosted fleet of 22 MCP servers. It proxies newline-delimited JSON-RPC between an MCP client and the hosted server verbatim, intended for clients that only support the stdio transport rather than Streamable HTTP.

🛠️ Key Features

Proxies newline-delimited JSON-RPC via stdio with verbatim pass-through
Dependency-free bridge using Python 3.9+ standard library
Hosted MCP fleet: 22 servers; 160 total tools; 110 free

🚀 Use Cases

Connect MCP clients that only speak stdio transport
Perform “margin, lead time, SKU mapping and price-ladder maths for dropshipping”

⚡ Developer Benefits

No telemetry and no extra dependencies beyond the Python 3.9+ standard library
Simple JSON-RPC proxying for developer integration

⚠️ Limitations

Designed for stdio-only clients; most clients can connect directly over Streamable HTTP
“4 of 6 free” indicates not all tools may be free

moltline-mcp

A thin, dependency-free stdio bridge to Moltline Studio's fleet of 22 hosted MCP servers.

Most modern MCP clients can connect to the fleet directly over Streamable HTTP — no install needed (see Direct connection below). This bridge exists for clients that only speak the stdio transport: it proxies newline-delimited JSON-RPC between your client and the hosted server, verbatim, with no telemetry and no dependencies beyond the Python 3.9+ standard library.

160 tools across 22 servers; 110 are free.
Free tier: no registration, no account, no credentials — connect and call tools immediately.
Premium tools are unlocked with a Moltline license. Set MOLTLINE_LICENSE in your MCP client's environment; the bridge sends it as the X-Moltline-License header and never writes it to argv, URLs or logs. See auth.md.
Independently checked by MCPize on the direct endpoints (scans of 5–6 September 2026: 6 A+, 15 A, 1 B+; scores 89–98). All 22 servers score 100 on clarity, 100 on reliability and 100 on trust, 95 on protocol and 87 on safety; the one finding raised on every server is that the free tier accepts anonymous access — which is the point of it — and the spread between servers sits in MCPize's "Market" dimension (a crowded category). Each server's MCPize listing links its own public result.

Find it on: Smithery · MCPize · Glama · Clawmart · MCP Registry

The fleet

Server	Tools	What it does
`catalog`	10	Search 138 agent skills and personas by plain-language job; preview any product.
`codereview`	7	Risk-scan a diff, flag AI-generated-code tells, find secrets, report complexity.
`govern`	8	Audit an MCP config or SKILL.md for over-broad scope and prompt-injection risk.
`timeops`	5	Business days, meeting overlap, recurrence expansion, deadline and SLA math.
`data`	7	Paste-your-data analytics: CSV profiling, A/B tests, correlation, growth, cohorts.
`humanizer`	5	Find AI-isms with evidence, fingerprint a writing voice, measure burstiness.
`business`	8	30 finance, bookkeeping, legal-ops and SMB operations persona-skill products.
`creator`	8	20 blogging, brand-voice, copywriting, video and social persona-skill products.
`educator`	7	8 curriculum, classroom, accommodations and exam-prep persona-skill products.
`outbound`	8	7 outreach, sequencing, deliverability, call-coaching and CRM-hygiene products.
`personal`	9	20 inbox, calendar, travel, meals and family-logistics persona-skill products.
`research`	8	7 research navigation, thesis, note-taking and citation persona-skill products.
`skillmd-lint`	6	Lint a SKILL.md for frontmatter, structure, secrets and size. All tools free.
`merchant`	6	Commerce arithmetic: processor fees, charge-to-net, invoice totals, proration.
`shipping`	6	Dimensional weight, parcel fit, landed cost, freight class, rate cards.
`shopify`	6	Check a product CSV, URL handles, variant matrices and metafield keys.
`dropship`	6	Dropshipping unit economics: margin, lead time, SKU mapping, price ladders.
`recall`	6	A portable knowledge-graph memory you pass in and get back. No database.
`vision`	6	Image header probing, bbox conversion, resize plans, color and detection math.
`regclock`	9	Incident-reporting deadlines from the legal text (EU CRA, NIS2, DORA, GDPR, UK GDPR, HIPAA, SEC 8-K), cited.
`taxlots`	8	Crypto cost basis: parse exchange CSVs, lint, match transfers, FIFO/LIFO/HIFO lots, Form 8949 rows, 1099-DA diff.
`optimize`	11	OR-Tools routing, 3-D packing, 1-D/2-D cutting, knapsack and shift rostering with stated limits.

Machine-readable discovery: api-catalog · per-server card at https://mcp.moltlinestudio.com/<server>/.well-known/mcp/server-card.json · fleet health.

Direct connection (preferred)

If your MCP client supports Streamable HTTP (Claude Desktop, Claude Code, Cursor, and most current clients do), point it straight at the hosted endpoint — nothing to install:

json

{
  "mcpServers": {
    "moltline-timeops": {
      "type": "http",
      "url": "https://mcp.moltlinestudio.com/timeops"
    }
  }
}

Swap timeops for any slug in the table above.

The stdio bridge (for stdio-only clients)

Install

Run directly (recommended) — the bridge is a single stdlib-only file, so a clone is all you need:

bash

git clone https://github.com/GarphenGate/moltline-mcp.git
python3 moltline-mcp/moltline_mcp.py timeops   # any of the 22 slugs; default: catalog

Docker — see Docker below if you prefer a container.

A PyPI package is planned; until then, use the methods above.

Client configuration

Point your MCP client at the script with an absolute path:

json

{
  "mcpServers": {
    "moltline-timeops": {
      "command": "python3",
      "args": ["/absolute/path/to/moltline-mcp/moltline_mcp.py", "timeops"]
    }
  }
}

Or run it through Docker (after docker build -t moltline-mcp .):

json

{
  "mcpServers": {
    "moltline-timeops": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "moltline-mcp", "timeops"]
    }
  }
}

CLI

text

python3 moltline_mcp.py [server] [--timeout SECONDS] [--list] [--version]

server — one of the 22 slugs (default catalog); anything else fails fast with the valid list.
--timeout — per-request timeout in seconds (default 300, or env MOLTLINE_TIMEOUT).
--list — print the server slugs and exit.
Env MOLTLINE_BASE_URL — override the fleet base URL (for testing).
Env MOLTLINE_LICENSE — your Moltline license, sent as the X-Moltline-License header to unlock premium tools. Omit it and the bridge runs free-tier only.
Env MOLTLINE_DEBUG=1 — diagnostic logging on stderr (stdout stays protocol-clean). The license is never logged; debug output reports only whether one is configured.

Docker

The bridge also runs containerized (stdio in, network egress to the fleet required):

bash

docker build -t moltline-mcp .
docker run -i --rm moltline-mcp timeops   # any of the 22 slugs; default: catalog

See Client configuration for the matching mcpServers entry.

How it works

One process per server connection. Each JSON-RPC message read from stdin is POSTed to https://mcp.moltlinestudio.com/<server>; JSON and SSE-framed responses are relayed back to stdout as newline-delimited JSON. The bridge tracks the server-assigned Mcp-Session-Id and echoes the negotiated MCP-Protocol-Version, per the Streamable HTTP transport spec. It never inspects, stores, or reports your traffic.

Tests

The bridge ships with an offline test suite - no network, no dependencies:

bash

python -m unittest -v

Twenty-two tests cover the parts that actually break in a transport bridge: newline-delimited framing, SSE event splitting (multiple events, multi-line data: payloads, a trailing event with no blank line, comments and named events), session-id capture and reuse, protocol-version negotiation on initialize only, and error relay - a JSON-RPC error document is passed through verbatim, anything else becomes a well-formed -32603. CI runs them on Python 3.9, 3.12 and 3.13, plus a Docker build and container smoke test.

Access and licensing

Free tier — anonymous. No registration or credentials; all free tools work immediately.
Premium — unlocked with a Moltline license purchased (human-in-the-loop) at moltlinestudio.com. Set MOLTLINE_LICENSE in the environment and the bridge forwards it as the X-Moltline-License request header. It is deliberately not a command-line flag: argv is world-readable through ps. It is never placed in a URL and never logged. Details: auth.md.

sell_price	number	required	What the customer pays, excluding tax. Must be above 0.
supplier_cost	number	required	What the supplier charges you per unit.
shipping_cost	number	optional	Shipping you absorb per order. Default 0.
payment_fee_pct	number	optional	Processor percentage fee. Default 2.9 — a common published rate, not a statement about your account.
payment_fee_fixed	number	optional	Processor fixed fee per transaction. Default 0.30.
ad_cost_per_order	number	optional	Blended acquisition cost per order. Default 0, but leaving it at 0 is the most common way this maths lies.
other_cost	number	optional	Anything else per order: packaging inserts, app fees, support time. Default 0.

supplier_days	integer	required	Days from your order to the supplier despatching it.
transit_days	integer	required	Days in transit from despatch to the customer.
buffer_days	integer	optional	Extra days added before the date you publish. Default 2.
order_date	string	optional	Start date as YYYY-MM-DD, e.g. "2026-08-20". Defaults to today when omitted.
working_days_only	boolean	optional	When true, count supplier and transit days as Monday-Friday only. Default false.

supplier_cost	number	required	Per-unit cost from the supplier. Must be above 0.
target_margins_pct	array	required	Margins to solve for, e.g. [30, 40, 50]. Each must be above 0 and below 100.
payment_fee_pct	number	optional	Processor percentage fee. Default 2.9.
payment_fee_fixed	number	optional	Processor fixed fee. Default 0.30.
shipping_cost	number	optional	Shipping you absorb per order. Default 0.
charm_ending	string	optional	Force prices to end in these cents, e.g. ".99". Pass an empty string for exact prices. Default ".99".

unit_cost	number	required	Cost per unit at the MOQ. Must be above 0.
moq	integer	required	The supplier's minimum order quantity, in units.
monthly_demand	number	required	Units you expect to sell per month. Must be above 0.
cash_available	number	required	Cash you can commit to stock right now.
lead_time_days	integer	optional	Days from placing the order to stock being sellable. Default 30.
safety_weeks	number	optional	Weeks of demand held as buffer against a late delivery. Default 2.

sell_price	number	required	Price the customer paid.
unit_profit	number	required	Profit on one kept sale, from margin_check. May be negative, which the result will make obvious.
unit_cost	number	required	What the goods themselves cost you — the only part a restocked unit gives back. Advertising and fees do not return.
return_rate_pct	number	required	Percentage of orders returned, e.g. 8.
restock_pct	number	optional	Percentage of returned units resellable at full price. Default 0, the conservative case.
return_shipping	number	optional	What an inbound return costs you. Default 0.
refund_pct	number	optional	Percentage of the sale price refunded, e.g. 100 for a full refund or 80 when a restocking fee is kept. Default 100.

Moltline Dropship Economics

com.moltlinestudio/dropship — Model Context Protocol (MCP) Server

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Topics

margin_check

lead_time

sku_map_check

price_ladder

moq_planner

returns_impact

moltline-mcp

The fleet

Direct connection (preferred)

The stdio bridge (for stdio-only clients)

Install

Client configuration

CLI

Docker

How it works

Tests

Access and licensing

Links

License

Install

Remote endpoint

Related servers