Moltline Outbound Engine

com.moltlinestudioPublished by moltlinestudio.comOfficial publisherv1.2.0Updated Oct 25, 2026

7 outreach, sequencing, call-coaching and CRM-hygiene skill products. 6 of 8 free.

The publisher's own server: Moltline Business Suite

VerifiedStreamable HTTPWeb executableProductivity & WorkflowBusiness & Commerce

Overview

AI-generated overview

Moltline Outbound Engine gives an assistant outreach skill products, copy auditing, sequence planning, subject-line scoring and UTM link building.

What you can do
  • Browse the seven outbound products and their included skills, and load a product's free gateway skill with full instructions
  • Audit outreach copy for spam triggers, length, structure, caps, links and personalization signals, with a score and findings
  • Plan an outreach cadence across touches, days and channels, with per-touch purposes
  • Score and rank up to 20 email subject lines on length, spam triggers, caps, merge fields and curiosity cues
  • Build UTM-tagged campaign URLs
  • Load a full product (persona plus every skill) or a single named skill, which requires a license
When to use it
Useful when an assistant helps draft, review or schedule outbound sales and marketing outreach, or when you want quick deliverability and subject-line feedback before sending. The free tools cover copy auditing, cadence planning, subject scoring and UTM tagging without an account.
Requirements
Remote Streamable HTTP endpoint; no install, account or credentials needed for the free tools. Premium tools need a Moltline license, purchased separately and supplied as the MOLTLINE_LICENSE environment variable, which is forwarded as the X-Moltline-License header. A stdio bridge exists for clients that cannot use HTTP and needs Python 3.9+ or Docker with network access.
Before you install
Premium tools require a paid license; the license value is a secret and should be passed by environment variable rather than command-line arguments. Copy, subject lines and URLs you submit are sent to the hosted service. The tools generate plans and scores but do not send messages themselves.

Installation

In SourceWeft

  1. Open Moltline Outbound Engine in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.moltlinestudio%2Foutbound/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

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

README

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

ServerToolsWhat it does
catalog10Search 138 agent skills and personas by plain-language job; preview any product.
codereview7Risk-scan a diff, flag AI-generated-code tells, find secrets, report complexity.
govern8Audit an MCP config or SKILL.md for over-broad scope and prompt-injection risk.
timeops5Business days, meeting overlap, recurrence expansion, deadline and SLA math.
data7Paste-your-data analytics: CSV profiling, A/B tests, correlation, growth, cohorts.
humanizer5Find AI-isms with evidence, fingerprint a writing voice, measure burstiness.
business830 finance, bookkeeping, legal-ops and SMB operations persona-skill products.
creator820 blogging, brand-voice, copywriting, video and social persona-skill products.
educator78 curriculum, classroom, accommodations and exam-prep persona-skill products.
outbound87 outreach, sequencing, deliverability, call-coaching and CRM-hygiene products.
personal920 inbox, calendar, travel, meals and family-logistics persona-skill products.
research87 research navigation, thesis, note-taking and citation persona-skill products.
skillmd-lint6Lint a SKILL.md for frontmatter, structure, secrets and size. All tools free.
merchant6Commerce arithmetic: processor fees, charge-to-net, invoice totals, proration.
shipping6Dimensional weight, parcel fit, landed cost, freight class, rate cards.
shopify6Check a product CSV, URL handles, variant matrices and metafield keys.
dropship6Dropshipping unit economics: margin, lead time, SKU mapping, price ladders.
recall6A portable knowledge-graph memory you pass in and get back. No database.
vision6Image header probing, bbox conversion, resize plans, color and detection math.
regclock9Incident-reporting deadlines from the legal text (EU CRA, NIS2, DORA, GDPR, UK GDPR, HIPAA, SEC 8-K), cited.
taxlots8Crypto cost basis: parse exchange CSVs, lint, match transfers, FIFO/LIFO/HIFO lots, Form 8949 rows, 1099-DA diff.
optimize11OR-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.gitpython3 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.

Links

License

MIT © 2026 Moltline Studio

Source: README.md at commit bbf91e4

Tools

8

list_products

List Products

List the 7 outbound products with their included skills. FREE. Takes no arguments. Returns a list of product objects, each {"slug": "linkedin-outreach", "name": ..., "tagline": ..., "skills": ["Skill A", ...], "free_skill": "Gateway Skill Name"}. Use the returned slug values with get_free_skill, get_full_product, or get_full_skill. Returns metadata only - no persona text and no skill instructions. Use when the caller wants to see what this server covers. Not for keyword search across the whole 138-product catalog, which the catalog server's search_catalog does, and not for instructions the caller can act on (get_free_skill). Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"}. Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Takes no parameters.

get_free_skill

Get Free Skill

Load a product's free gateway skill with its complete instructions. FREE. Typical input {"slug": "linkedin-outreach"} returns {"slug": ..., "skill": "<skill name>", "instructions": "<full skill text>"}. Returns exactly one skill - the product's free gateway skill - chosen automatically from the slug, with no plan required. Use when the caller wants usable instructions immediately. Not for the product's other skills: those are named and need get_full_skill with a skill_name, which requires a paid plan. Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"} (for example {"error": "unknown slug '<value>'. Use list_products."}). Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Parametersslugrequired

audit_copy

Audit Copy

Audit outreach copy for spam triggers and deliverability risks. FREE. Checks spam-trigger phrases, length, structure, caps, links, and personalization signals. Typical input {"subject": "Quick question", "body": "<email text>"} returns {"score": 0-100, "findings": ["Spam-trigger phrases: ...", "Long for cold outreach (200 words; aim 50-125)"], "note": "..."}. Use on the body of an outreach message. Not for the subject line alone (subject_line_scorer) and not for the send schedule (sequence_planner). Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"}. Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Parametersbodysubject

get_full_product

Get Full Product

Load one product in full: its persona plus every paid skill. PREMIUM (license). Typical input {"slug": "linkedin-outreach"} returns {"slug": ..., "name": ..., "persona": "<persona text>", "skills": [{"name": ..., "instructions": ...}, ...], "free_skill": {...}}. Returns persona plus every skill for one product. Use when the caller wants the whole product. Not for a single skill (get_full_skill) and not for a free look, which list_products and get_free_skill provide with no plan. Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"} (for example {"error": "unknown slug '<value>'"}). Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Parametersslugrequired

get_full_skill

Get Full Skill

Load one paid skill's complete instructions from a product. PREMIUM (license). Typical input {"slug": "linkedin-outreach", "skill_name": "Connection Openers"} returns {"slug": ..., "skill": ..., "instructions": "<full skill text>"}. Returns one named skill, selected by skill_name. Use when the caller wants one specific paid skill. Not for the free gateway skill, which get_free_skill returns with no plan, and not for every skill at once (get_full_product). Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"} (for example {"error": "unknown slug '<value>'"}). Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Parametersslugrequiredskill_namerequired

sequence_planner

Sequence Planner

Plan an outreach cadence with expanding gaps and per-touch purposes. FREE. Spaces N touches across D days, alternating channels. Typical input {"touches": 5, "days": 14, "channels": ["email", "linkedin"]} returns {"days": 14, "plan": [{"touch": 1, "day": 0, "channel": "email", "purpose": "open with a specific, researched reason"}, ...], "rule": "..."}. Use when cadence and per-touch purpose are the question. Not for the wording of any single message (audit_copy). Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"}. Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Parametersdaystoucheschannels

subject_line_scorer

Subject Line Scorer

Score and rank up to 20 email subject lines, best first. FREE. Scores 0-100 on length, spam triggers, caps, personalization merge fields, and curiosity cues. Typical input {"subjects": ["Quick question about {{company}}", "ACT NOW!!!"]} returns {"ranked": [{"subject": ..., "score": 92, "notes": ["personalized (+)", "question format"]}, ...]}. Use when several subject lines need ranking against deliverability and curiosity signals. Not for article headlines, which the creator server's headline_analyzer ranks, and not for message bodies (audit_copy). Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"}. Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Parameterssubjectsrequired

utm_builder

Utm Builder

Build a UTM-tagged URL for campaign tracking. FREE. Typical input {"url": "https://example.com/pricing", "source": "newsletter", "medium": "email", "campaign": "spring-launch"} returns {"tagged_url": "https://example.com/pricing?utm_source=newsletter& utm_medium=email&utm_campaign=spring-launch"}. Use to build one tagged tracking URL. Not for analyzing campaign results and not for anything that belongs in the message body (audit_copy). Errors: on invalid, missing, or malformed input this tool never raises a protocol error — it returns {"error": "<what is wrong and how to fix it>"} (for example {"error": "url must start with http(s)://"}). Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Parametersurlrequiredtermmediumrequiredsourcerequiredcontentcampaignrequired

Version history

1
  1. v1.2.0LatestSep 16, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

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