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Folderr

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Folderr MCP Server

A Model Context Protocol (MCP) server that provides tools to interact with Folderr's API, specifically for managing and communicating with Folderr Assistants.

Installation

Add to your MCP Settings

{
  "mcpServers": {
    "folderr": {
      "command": "npx",
      "args": ["-y", "@folderr/folderr-mcp-server"]
    }
  }
}

Related MCP server: Filesystem MCP Server

Features

The server provides the following tools:

Authentication

Two methods of authentication are supported:

  1. Login with Email/Password

    {
      "name": "login",
      "arguments": {
        "email": "user@example.com",
        "password": "your-password"
      }
    }
  2. API Token Authentication

    {
      "name": "set_api_token",
      "arguments": {
        "token": "your-api-token"
      }
    }

    API tokens can be generated from the Folderr developers section. This method is recommended for automated or long-running processes.

Assistant Management

  1. List Assistants

    {
      "name": "list_assistants",
      "arguments": {}
    }

    Returns a list of all available assistants for the authenticated user.

  2. Ask Assistant

    {
      "name": "ask_assistant",
      "arguments": {
        "assistant_id": "assistant-id",
        "question": "Your question here"
      }
    }

    Send a question to a specific assistant and receive their response.

Configuration

The server stores its configuration in a config.json file, which includes:

  • Base URL for the Folderr API

  • Authentication token (from login or API key)

Error Handling

The server provides detailed error messages for common scenarios:

  • Authentication failures

  • Invalid requests

  • API errors

  • Network issues

Development

To build the server:

npm install
npm run build

Usage in MCP Settings

Add the following to your MCP settings configuration:

{
  "mcpServers": {
    "folderr": {
      "command": "node",
      "args": ["/path/to/folderr-server/build/index.js"]
    }
  }
}

Authentication Flow

  1. Either:

    • Use the login tool with email and password

    • Use the set_api_token tool with an API token from Folderr's developers section

  2. The authentication token is automatically saved and used for subsequent requests

  3. All assistant-related tools require authentication before use

Error Messages

Common error messages and their meanings:

  • "Not logged in": No authentication token is set

  • "Login failed": Invalid credentials

  • "Failed to list assistants": Error retrieving assistant list

  • "Failed to ask assistant": Error sending question to assistant

Available Tools

7 tools
ask_assistantC

Ask a question to a specific assistant

ParametersJSON Schema
NameRequiredDescriptionDefault
assistant_idYesID of the assistant to ask
questionYesQuestion to ask the assistant

TDQS

C2.7/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the action ('ask') but doesn't reveal key traits: whether this is a read-only or mutating operation, if it requires authentication, what the response format might be, or any rate limits. The description is minimal and lacks essential context for safe and effective use.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise—a single, clear sentence that directly states the tool's function without any fluff. It's front-loaded and wastes no words, making it easy to parse quickly. This efficiency is commendable, though it comes at the cost of depth in other dimensions.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity of interacting with an assistant (which could involve queries, responses, or mutations), the description is incomplete. With no annotations and no output schema, it fails to explain what the tool returns or its behavioral implications. The description alone is insufficient for an agent to understand the full context of use, especially compared to siblings like 'execute_workflow'.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% description coverage, clearly documenting both parameters ('assistant_id' and 'question'). The description adds no additional meaning beyond what the schema provides, such as explaining parameter interactions or usage examples. Since schema coverage is high, the baseline score of 3 is appropriate, as the description doesn't compensate but also doesn't detract.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'Ask a question to a specific assistant' clearly states the action (ask) and target (assistant), but it's vague about what 'ask' entails—whether it's a conversational query, a command, or something else. It doesn't distinguish this tool from potential siblings like 'list_assistants', which is a different operation, but the purpose is understandable though not highly specific.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. For example, it doesn't specify if this is for general queries, debugging, or if other tools like 'execute_workflow' might be better for certain tasks. There's no mention of prerequisites, such as needing an assistant ID from 'list_assistants', leaving usage context implied at best.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

execute_workflowC

Execute a workflow with the required inputs

ParametersJSON Schema
NameRequiredDescriptionDefault
workflow_idYesID of the workflow
inputsYesInput values required by the workflow

TDQS

C2.6/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden of behavioral disclosure. It states the tool 'executes' a workflow, implying a write operation, but doesn't describe what execution involves (e.g., triggering a process, side effects, permissions required, or response format). This leaves significant gaps in understanding the tool's behavior beyond basic action.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence with no wasted words. It's front-loaded with the core action, making it easy to parse. However, it could be more structured by including key details, but it earns high marks for brevity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity of executing a workflow (a write operation with potential side effects), no annotations, no output schema, and incomplete behavioral disclosure, the description is inadequate. It doesn't explain what happens upon execution, error handling, or return values, leaving critical context gaps for effective tool use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema fully documents the two parameters ('workflow_id' and 'inputs'). The description adds minimal value by mentioning 'required inputs', which aligns with the schema but doesn't provide additional meaning, syntax, or format details beyond what's already structured.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states the action ('execute') and resource ('workflow'), but it's vague about what execution entails. It doesn't distinguish from siblings like 'get_workflow_inputs' or 'list_workflows', which are related but different operations. The purpose is understandable but lacks specificity about the execution mechanism or outcome.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing workflow inputs from 'get_workflow_inputs'), exclusions, or how it differs from other tools like 'ask_assistant'. The description offers no contextual usage information.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_workflow_inputsC

Get the required inputs for a workflow

ParametersJSON Schema
NameRequiredDescriptionDefault
workflow_idYesID of the workflow

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It states a read operation ('Get'), implying non-destructive behavior, but does not disclose other traits such as authentication needs, rate limits, error conditions, or what the return format looks like (no output schema). This leaves significant gaps for a tool with no annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, clear sentence with no wasted words. It is front-loaded with the core purpose and appropriately sized for a simple tool, making it efficient and easy to parse.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the lack of annotations and output schema, the description is incomplete. It does not explain what 'required inputs' entails (e.g., structure, types, defaults) or behavioral aspects like error handling. For a tool that retrieves configuration data, more context is needed to guide effective use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% description coverage, with the single parameter 'workflow_id' documented as 'ID of the workflow'. The description adds no additional meaning beyond this, such as format examples or sourcing instructions. With high schema coverage, the baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Get') and target ('required inputs for a workflow'), making the purpose understandable. It distinguishes itself from siblings like 'execute_workflow' (which runs workflows) and 'list_workflows' (which lists workflows), but does not explicitly differentiate from other input-related tools (none exist in the sibling list).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It does not mention prerequisites (e.g., needing a workflow ID from 'list_workflows'), exclusions, or contextual cues for selection among siblings like 'ask_assistant' or 'execute_workflow'.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

list_assistantsB

List all available assistants

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

TDQS

B3.1/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool lists assistants but doesn't describe any behavioral traits such as pagination, rate limits, authentication requirements, or what 'available' means in context. This leaves significant gaps for a tool that presumably interacts with a system.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence with zero waste. It's front-loaded with the core purpose and appropriately sized for a simple tool with no parameters.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the lack of annotations and output schema, the description is incomplete. It doesn't explain what 'assistants' are in this context, what data is returned, or any operational constraints, making it inadequate for a tool that likely returns a list of resources.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description appropriately doesn't discuss parameters, earning a baseline score of 4 for not adding unnecessary information beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('List') and resource ('all available assistants'), providing a specific verb+resource combination. However, it doesn't differentiate from sibling tools like 'list_workflows' or 'ask_assistant', which would require explicit comparison for a score of 5.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives like 'ask_assistant' or 'list_workflows'. There's no mention of prerequisites, context, or exclusions, leaving the agent with minimal usage direction.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

list_workflowsB

List all available workflows

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

TDQS

B3.2/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden for behavioral disclosure. It states the action ('List') but doesn't describe what 'list' entails—whether it returns summaries or full details, if there's pagination, rate limits, or authentication requirements. This is a significant gap for a tool with zero annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence with no wasted words. It's front-loaded with the core action and resource, making it easy to parse quickly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a zero-parameter list tool with no output schema, the description is minimally adequate. It states what the tool does but lacks behavioral context (e.g., return format, pagination) and usage guidance relative to siblings. Without annotations, this leaves gaps in understanding how to effectively use the tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description doesn't add parameter details, which is appropriate, but it could have mentioned implicit filtering or sorting options. Baseline is 4 for zero-parameter tools.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb ('List') and resource ('workflows') with scope ('all available'), making the purpose immediately understandable. However, it doesn't differentiate from sibling tools like 'list_assistants' or 'get_workflow_inputs', which prevents a perfect score.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives like 'get_workflow_inputs' or 'execute_workflow'. There's no mention of prerequisites, context, or exclusions, leaving the agent to infer usage from the tool name alone.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

loginC

Login to Folderr with email and password

ParametersJSON Schema
NameRequiredDescriptionDefault
emailYesUser email
passwordYesUser password

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden for behavioral disclosure. It mentions authentication but doesn't describe what happens after login (session creation, token generation, expiration), security implications, error conditions, or whether this establishes a persistent session. For a critical authentication tool with zero annotation coverage, this is a significant gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise (6 words) and front-loaded with the essential information. Every word earns its place - 'Login to Folderr' establishes the action and target, 'with email and password' specifies the required inputs. No wasted words or unnecessary elaboration.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For an authentication tool with no annotations and no output schema, the description is insufficient. It doesn't explain what the tool returns (session token, success status, user data), doesn't mention error cases or security requirements, and provides no context about how this integrates with the broader tool ecosystem. Given the critical nature of authentication, more completeness is needed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents both parameters completely. The description adds minimal value beyond what's in the schema by confirming these are the credentials needed for login, but doesn't provide additional context about format requirements, validation rules, or security considerations.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Login to Folderr') and the required credentials ('with email and password'), making the purpose immediately understandable. However, it doesn't differentiate this authentication tool from sibling tools like 'set_api_token' which might serve a similar authentication purpose through different mechanisms.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives like 'set_api_token' or whether it's required before using other tools. It simply states what the tool does without context about prerequisites, authentication flow, or relationship to other tools in the server.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

set_api_tokenA

Set an API token for authentication (alternative to login)

ParametersJSON Schema
NameRequiredDescriptionDefault
tokenYesAPI token generated from Folderr developers section

TDQS

A3.5/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. While it indicates this is for authentication, it doesn't describe what happens when the token is set (e.g., persistence across sessions, scope of authentication, error behavior if token is invalid, or whether it overwrites existing tokens). For a security-critical tool with zero annotation coverage, this is a significant gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is perfectly concise with a single sentence that contains zero wasted words. It's front-loaded with the core purpose and includes the essential contextual information about being an alternative to login, making every word earn its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's moderate complexity (authentication operation with one parameter) and 100% schema coverage but no annotations or output schema, the description provides adequate basic context about purpose and alternative usage. However, it lacks important behavioral details about how the authentication works and what happens after token setting, leaving gaps for a security-related tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% description coverage, with the 'token' parameter well-documented as 'API token generated from Folderr developers section'. The description adds no additional parameter information beyond what's already in the schema, so it meets the baseline of 3 where the schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with a specific verb ('Set') and resource ('API token for authentication'), making it immediately understandable. It distinguishes from the sibling 'login' tool by mentioning it's an alternative, though it doesn't fully differentiate from other potential authentication methods beyond this sibling.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides clear context by explicitly stating this is an 'alternative to login', which helps the agent understand when to use this tool versus the sibling 'login' tool. However, it doesn't specify when to prefer one over the other or mention any prerequisites or exclusions for using this authentication method.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. 7 tool updates
    • First observedask_assistant
    • First observedexecute_workflow
    • First observedget_workflow_inputs
    • First observedlist_assistants
    • First observedlist_workflows
    • First observedlogin
    • First observedset_api_token

TDQS

B3.4/5.0
Disambiguation5/5

Each tool has a clearly distinct purpose with no overlap: authentication (login, set_api_token), listing resources (list_assistants, list_workflows), workflow operations (get_workflow_inputs, execute_workflow), and assistant interaction (ask_assistant). The descriptions make it easy to differentiate between them.

Naming Consistency5/5

All tools follow a consistent verb_noun pattern with snake_case throughout (e.g., ask_assistant, execute_workflow, list_workflows). The naming is predictable and readable, with no deviations in style or convention.

Tool Count5/5

With 7 tools, the server is well-scoped for managing assistants and workflows in Folderr. Each tool serves a clear function, covering authentication, listing, and execution without being overly sparse or bloated.

Completeness4/5

The toolset covers core workflows: authentication, listing assistants/workflows, getting workflow inputs, and executing workflows. A minor gap is the lack of tools for creating or managing assistants/workflows, but the provided tools support basic interaction and execution effectively.

Maintenance

ActivityInactive
ResponsivenessNo issues

Resources

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