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The IO Tools integration for Zapier calls the same public API you already use for REST, MCP or n8n: same key, same credits, same 800+ tools.
The integration calls the API and MCP surface while it’s still in Beta — see API overview.
Currently a private Zapier integration, not yet listed in Zapier’s public App Directory — accept the invite link to connect it. No approval needed on your end; searching for “IO Tools” inside Zapier itself won’t find it yet.

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Install

Accept the invite, then add IO Tools to a Zap like any other app — it’ll show up under “My Apps” from then on.

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Credentials

Add an iotools.cloud API connection:

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Operations

One integration, four operations:

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Run Tool

  • Tool — a searchable dropdown populated from the catalog.
  • The fields below it are populated dynamically from the selected tool’s input schema — enums become dropdowns with choices, scalar arrays become repeatable fields, everything else maps to a string, number or boolean field. A base64-blob field (single or array-of) falls back to a plain string — paste base64 text — there’s no Zapier field type for a raw blob.
  • Additional Fields (JSON) — a JSON object merged on top of the fields above, for anything they can’t represent well, or to override a single field with a Zapier expression. Defaults to {} (no-op).
  • Simplify Output — on by default, returns just the tool’s outputs; off returns the full response envelope (tool, tool_version, outputs, credits_used, credits_remaining).
A failed call throws using the API’s own RFC 9457 problem document — the error message is the specific detail (falling back to the category title).

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Rate limits

API keys are limited to 60 requests/minute per endpoint on the free tier (higher on paid tiers). A rate-limited call is retried automatically by Zapier’s own platform — not something the integration has to implement — respecting the wait time the API reports; only a rate limit that outlasts Zapier’s own retry budget surfaces as an error. See Rate limits.

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Cost

Same meter as REST, MCP and n8n: every Run Tool call costs the tool’s own credits, refunded if the call fails. New Tool Published, Find Tool and Get Credits are free. See Credits.

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Troubleshooting