# Moltline Studio (remote · mcp.moltlinestudio.com)

Fleet entry point: 22 hosted MCP servers, 160 tools, 110 free. Searches 138 agent skills.

- Trust score: 77/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-21

## Components

- remote · `mcp.moltlinestudio.com`: 77/100 (this document), [markdown](https://verifymcp.io/servers/com-moltlinestudio-catalog/catalog.md), [page](https://verifymcp.io/servers/com-moltlinestudio-catalog/catalog)

## Channel facts

- Endpoint: `https://mcp.moltlinestudio.com/catalog`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.2.0`

## 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 2026-09-21.

- **Endpoint Security**: 83/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 69/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 2187 tokens (~218/item across 10 items; 10 tools + 0 resources), over budget; trim descriptions and params.
  - 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.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Moltline Studio MCP server?

Moltline Studio is a hosted endpoint at https://mcp.moltlinestudio.com/catalog, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-moltlinestudio-catalog 'https://mcp.moltlinestudio.com/catalog'
```

### Cursor

```json
{
  "mcpServers": {
    "com-moltlinestudio-catalog": {
      "url": "https://mcp.moltlinestudio.com/catalog"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-moltlinestudio-catalog": {
      "type": "http",
      "url": "https://mcp.moltlinestudio.com/catalog"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-moltlinestudio-catalog]
url = "https://mcp.moltlinestudio.com/catalog"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-moltlinestudio-catalog": {
      "type": "remote",
      "url": "https://mcp.moltlinestudio.com/catalog",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-moltlinestudio-catalog --url 'https://mcp.moltlinestudio.com/catalog' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-moltlinestudio-catalog:
    url: "https://mcp.moltlinestudio.com/catalog"
```

### Netclaw

```json
{
  "McpServers": {
    "com-moltlinestudio-catalog": {
      "Transport": "http",
      "Url": "https://mcp.moltlinestudio.com/catalog"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-moltlinestudio-catalog -t streamable-http -u 'https://mcp.moltlinestudio.com/catalog'
```

### Other

```json
{
  "mcpServers": {
    "com-moltlinestudio-catalog": {
      "type": "http",
      "url": "https://mcp.moltlinestudio.com/catalog"
    }
  }
}
```

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.

### 2026-09-20 (score 77, +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.

### 2026-09-18 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 75, +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.

### 2026-09-14 (score 74, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-09-13 (score 74)

First indexed and scored.

## MCP tools (10)

### `search_catalog` (~274 tokens)

Search Catalog

Search all 138 catalog products by keyword and/or focus area. FREE.

Typical input {"query": "email inbox", "limit": 5} returns a ranked list
of product objects [{"slug": ..., "name": ..., "area": ..., "segment":
..., "tagline": ...}]. An empty query with an area set browses that area.

Use when the caller names a keyword, product, or focus area to look up.
Not for bundles (list_kits) and not for plain-language problem statements,
which recommend_products ranks by fit rather than keyword match. 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.

Input parameters:

- `area` (string): Optional focus-area filter; one of "productivity", "developertools", "personalassistant", "creative", "industryspecific", "educational". Empty means all areas.
- `limit` (integer): Maximum results to return; values outside 1-100 are clamped. Default 15.
- `query` (string): Space-separated keywords matched against name, tagline, slug, and segment, e.g. "email inbox".

Output parameters:

- `result` (array)

### `preview_product` (~235 tokens)

Preview Product

Preview one product: metadata, persona teaser, and paid-skill teasers. FREE.

Typical input {"slug": "inbox-zero-assistant"} returns {"slug": ...,
"name": ..., "tagline": ..., "persona_preview": ..., "skills":
[{"name": ..., "preview": ...}], "free_skill": ..., "note": ...}.

Returns teasers only, never full text. Use to judge a product before
committing. Not for the complete persona or skill bodies
(get_full_persona, get_full_product), and not when the caller wants
instructions they can act on now (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>"} (for example {"error": "unknown slug '<value>'"}). Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Input parameters:

- `slug` (string, required): Product slug exactly as returned by search_catalog or recommend_products, e.g. "inbox-zero-assistant".

### `get_free_skill` (~217 tokens)

Get Free Skill

Load a product's free gateway skill with its complete instructions. FREE.

Typical input {"slug": "inbox-zero-assistant"} 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>'"}). Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Input parameters:

- `slug` (string, required): Product slug exactly as returned by search_catalog, e.g. "inbox-zero-assistant".

### `list_kits` (~208 tokens)

List Kits

List the 12 themed kits with pricing and member products. FREE.

Takes no arguments. Returns a list of kit objects, each {"slug": ...,
"name": ..., "price_usd": N, "tagline": ..., "members": ["product-slug",
...], "availability": ...}. Use a kit's slug with get_full_kit (premium).
Kits are not sold standalone on any marketplace: price_usd is the bundle's
reference value, and All-Access is how a caller actually unlocks one.

Use when the caller asks about bundles or bundle pricing. Not for
individual products (search_catalog) and not for a kit's full contents
(get_full_kit). 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.

Output parameters:

- `result` (array)

### `upgrade_info` (~144 tokens)

Upgrade Info

Explain how to unlock full personas, paid skills, and kits. FREE.

Takes no arguments. Returns {"message": ..., "how": ..., "free_tier":
...} describing the upgrade path and what stays free.

Use when a premium tool has been refused or the caller asks what a plan
covers. Not for per-bundle or per-product pricing (list_kits,
preview_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>"}. Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

### `get_full_persona` (~183 tokens)

Get Full Persona

Load a product's complete persona definition. PREMIUM (paid plan).

Typical input {"slug": "inbox-zero-assistant"} returns {"slug": ...,
"persona": "<full persona text>"}.

Returns the persona text alone, with no skill bodies. Use when the caller
needs the product's voice and operating rules only. Not when skills are
also wanted - get_full_product returns persona and every skill in one
call. 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.

Input parameters:

- `slug` (string, required): Product slug exactly as returned by search_catalog.

### `get_full_skill` (~235 tokens)

Get Full Skill

Load one paid skill's complete instructions from a product. PREMIUM (paid plan).

Typical input {"slug": "inbox-zero-assistant", "skill_name": "Deep
Triage"} returns {"slug": ..., "skill": ..., "instructions": "<full
skill text>"}.

Returns one named skill, selected by skill_name. Use after preview_product
has shown the skill list and 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.

Input parameters:

- `skill_name` (string, required): Exact skill name as shown in preview_product's "skills" list for that product.
- `slug` (string, required): Product slug exactly as returned by search_catalog.

### `get_full_product` (~200 tokens)

Get Full Product

Load one product in full: persona plus every skill's instructions. PREMIUM (paid plan).

Typical input {"slug": "inbox-zero-assistant"} returns {"slug": ...,
"name": ..., "persona": ..., "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 bundle of products (get_full_kit). 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.

Input parameters:

- `slug` (string, required): Product slug exactly as returned by search_catalog.

### `get_full_kit` (~203 tokens)

Get Full Kit

Load a themed kit and every member product in full. PREMIUM (paid plan).

Typical input {"slug": "founder-kit"} returns {"slug": ..., "name": ...,
"products": [{"slug": ..., "name": ..., "persona": ..., "skills":
[...]}, ...]}.

Returns every member product of one bundle in full, so the payload is
large. Use only after list_kits has confirmed the kit slug. Not for a
single product (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 kit '<value>'"}). Every call is read-only and idempotent, so after correcting the input it is always safe to retry.

Input parameters:

- `slug` (string, required): Kit slug exactly as returned by list_kits, e.g. "founder-kit".

### `recommend_products` (~223 tokens)

Recommend Products

Recommend catalog products for a need described in plain language. FREE.

Typical input {"need": "help answering customer support emails"} returns
{"need": ..., "recommendations": [{"slug": ..., "name": ..., "why": ...,
"area": ..., "try_free": "<free skill name>"}], "next": "..."}.

Use when the caller describes a problem instead of naming a product;
ranking is by fit to the described need. Not for exact keyword or slug
lookups (search_catalog). 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.

Input parameters:

- `limit` (integer): Maximum recommendations; values outside 1-10 are clamped. Default 5.
- `need` (string, required): The job or problem in plain language, a few words or a sentence, e.g. "help answering customer support emails".

## Diagnostics

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

## Score history

- 2026-09-21: 77
- 2026-09-20: 77
- 2026-09-19: 76
- 2026-09-18: 76
- 2026-09-17: 75
- 2026-09-16: 75
- 2026-09-15: 75
- 2026-09-14: 74
- 2026-09-13: 74

## Common questions

### What is the Moltline Studio MCP server?

Moltline Studio is an MCP server listed in the public MCP registry as com.moltlinestudio/catalog. Fleet entry point: 22 hosted MCP servers, 160 tools, 110 free. Searches 138 agent skills. This page covers its hosted endpoint (https://mcp.moltlinestudio.com/catalog).

### Is the Moltline Studio MCP server safe to use?

Moltline Studio scores 77 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Moltline Studio MCP server expose?

Moltline Studio exposes 10 tools: search_catalog, preview_product, get_free_skill, list_kits, upgrade_info, and 5 more. Their descriptions and schemas cost roughly 2,122 tokens of context every time the server is loaded.

### Does the Moltline Studio MCP server require authentication?

No. We connected to Moltline Studio without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Moltline Studio MCP server still maintained?

Moltline Studio is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://mcp.moltlinestudio.com/catalog
- Repository: https://github.com/GarphenGate/moltline-mcp
- Website: https://moltlinestudio.com/servers.html#catalog
- Changelog RSS feed: https://verifymcp.io/servers/com-moltlinestudio-catalog/catalog.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-moltlinestudio-catalog/catalog.json
- HTML version of this page: https://verifymcp.io/servers/com-moltlinestudio-catalog/catalog