ActionBasecampUpdated May 2026

How do I post a message to a Basecamp project's board?

Short answer: Drop the "Basecamp → Post Message to Board" action anywhere in your workflow, map the inputs from upstream nodes, and publish.

Use this action All 4 Basecamp actions

Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

Field	Type	Required	Description
Project ID project_id	string	Required	The Project ID assigned by Basecamp. Find via the corresponding list/search operation in this app. Use the exact ID, not a name or label.
Message Board ID message_board_id	string	Required	—
Subject subject	string	Required	Message subject line.
Body (HTML) content	string	Required	—
Status status	options	Optional	—

Sample request

{
  "project_id": "{{trigger.project_id}}",
  "message_board_id": "{{trigger.message_board_id}}",
  "subject": "e.g. Quick update",
  "content": "{{trigger.content}}",
  "status": "{{trigger.status}}"
}

Returns

{
  "id": 1111,
  "url": "https://basecamp.com/...",
  "subject": "FYI"
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for Post Message to Board.

Any of these apps can fire this action as part of a workflow.

Google Sheets → Basecamp

2 Google Sheets triggers

HubSpot → Basecamp

18 HubSpot triggers

FAQ

Questions about Post Message to Board.

What does the Post Message to Board action do in Basecamp?

Posts a message to the project's message board — the place teams use for longer-form updates and discussion (vs the Campfire chat tool for ephemera). Useful for "weekly automated project digest → post to the project board" workflows.

What inputs does Post Message to Board require?

Required: Project ID, Message Board ID, Subject, Body (HTML). Every input accepts a static value or a variable from any upstream node in your workflow.

Can I use dynamic inputs from earlier workflow nodes?

Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.

What happens if Basecamp returns an error?

The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.

Does Post Message to Board support batch operations?

Yes. Run Post Message to Board inside a Loop node to process arrays. Tiny Command handles Basecamp's rate limits automatically so you don't have to throttle manually.

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