n8n-nodes-spreadapi

This is an n8n community node for SpreadAPI — it lets you
run spreadsheet calculations as part of your n8n workflows.

SpreadAPI turns Excel models into web APIs: pick cells as inputs and outputs,
publish, and every calculation your spreadsheet can do becomes callable — pricing
models, financial calculators, engineering formulas, quotes.

n8n is a fair-code licensed
workflow automation platform.

Installation

Follow the installation guide
in the n8n community nodes documentation:

Settings → Community Nodes → Install and enter n8n-nodes-spreadapi.

Operations

Calculate

Sends input values to a published SpreadAPI service and returns the calculated
outputs. Runs once per incoming item — to calculate many scenarios, feed the
node many items.

• Inputs — a typed form generated live from the service definition:
  fields with allowed values become dropdowns, booleans become toggles,
  numbers get number inputs, and required fields are enforced. Switch to
  JSON mode to map a whole object from a previous node instead.
• Simplify Output (default on) — outputs arrive as a flat object,
  e.g. { "monthly_payment": 1265.79, "total_interest": 155684.4 }.
  Turn it off for the raw API response including metadata.
• Bypass Cache — force a fresh calculation.

Get Service Details

Returns the service's full self-description: input parameters (types, ranges,
allowed values), outputs, and usage documentation. Useful for exploring a
service or building dynamic workflows.

Credentials

One paste is all it takes: copy the service URL from your service's
Integration panel (n8n section) and paste it into the credential's
Service URL field. For token-protected services the URL already includes
the token; for public services the plain URL works. n8n tests the connection
when you save the credential.

In the node, pick your service From List (it shows the credential's service) — the input form then loads automatically. For public services you
can skip the credential and choose the service By URL or By ID.

Things to know

• Percentages are decimals. A rate of 5% is 0.05, not 5. Strings like
  "5%" are converted automatically.
• Numbers and booleans given as text are converted server-side; yes/no,
  true/false and 1/0 all work for boolean inputs.
• Validation errors name the exact parameter, what's wrong, and the allowed
  values — check the error output when a calculation fails.
• The Service ID is shown in the service's Integration panel and in its URL.

Resources

• SpreadAPI documentation
• n8n community nodes documentation

License

MIT