Basecamp MCP Server

List Basecamp Projects

basecamp_list_projects

Read-onlyIdempotent

Retrieve all visible projects in your Basecamp account, including IDs and metadata, to access messages, todos, and resources.

Instructions

List all projects visible to the authenticated user in a Basecamp account. This tool returns active projects with their IDs, names, descriptions, and metadata. Use this to discover project/bucket IDs needed for accessing messages, todos, and other resources.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "basecamp_list_projects"
  }
}

Input Schema

Name	Required	Description	Default
`filter`	No	Optional regular expression to filter projects by name or description

Schema Changelog

Changes observed during successful MCP inspections.

Changed5 schema fields changedv1.0.0Jan 4, 2026

addedInput schema / $schema

Added value: +"http://json-schema.org/draft-07/schema#"

addedInput schema / additionalProperties
```
Added value: +false
```

removedInput schema / properties / account_id

Removed value: -{
-  "description": "Basecamp account ID",
-  "type": "number"
-}

addedInput schema / properties / filter

Added value: +{
+  "description": "Optional regular expression to filter projects by name or description",
+  "type": "string"
+}

removedInput schema / required
```
Removed value: -[
-  "account_id"
-]
```

First observedOct 25, 2025

TDQS

A4.2/5.0

Behavior4/5

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

Annotations already declare readOnlyHint and idempotentHint. Description adds that it returns 'active projects' and 'visible to the authenticated user,' providing extra behavioral context beyond annotations.

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?

Two sentences, front-loaded with action and purpose, no wasted words. Efficient structure.

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

Completeness4/5

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

Simple list tool with no output schema; description adequately covers return values and usage context. Could mention if pagination exists, but not critical.

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?

Single parameter 'filter' has identical description in schema and tool description ('Optional regular expression to filter projects by name or description'). Schema coverage is 100%, so baseline 3 applies with no additional value from description.

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

Purpose5/5

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

Description clearly states 'List all projects visible to the authenticated user' and specifies returned data (IDs, names, descriptions, metadata). Distinguishes from sibling tools like basecamp_get_project.

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?

Explicitly tells when to use: 'Use this to discover project/bucket IDs needed for accessing messages, todos, and other resources.' Does not mention alternatives for non-list scenarios, but context is clear.

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

Deploy Server