[DEVPL-4067] Add data_custom_code_tool for freeform head/footer custom code#131
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bertenator wants to merge 1 commit into
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[DEVPL-4067] Add data_custom_code_tool for freeform head/footer custom code#131bertenator wants to merge 1 commit into
bertenator wants to merge 1 commit into
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Wrap the freeform Custom Code Data API
(/v2/{sites|pages}/:id/custom_code/freeform[/:location]) behind a new
data_custom_code_tool with get/set actions for site and page head/footer
code. Mirrors the existing authenticated-fetch pattern (workflows.ts); the
API enforces scopes, the Custom Code entitlement, and the feature gate, so
the tool is a thin token-forwarding wrapper.
The underlying Data API (DEVPL-4351, rolled out to 100%) was live but had no
MCP tool exposing it.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
bertenator
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denisemauldin,
tterb and
viratatwebflow
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We do have this
https://github.com/webflow/mcp-remote-cloudflare-server/pull/128
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Summary
Adds a
data_custom_code_toolthat exposes Webflow's freeform custom code (raw<head>/ footer code blocks on a site or page) through the MCP server. The Data API endpoints/v2/{sites|pages}/:id/custom_code/freeform[/:location]are live, but no MCP tool wrapped them, so MCP clients had no way to read or write freeform head/footer code.What's added
One
data_custom_code_tool(actions array, consistent with the other data tools):get_site_freeform_code— GET a site's head/footer freeform code (omitlocationfor both)set_site_freeform_code— PUT (atomic replace) a site's head or footerget_page_freeform_code— GET a page's head/footer freeform code (optionallocale_id)set_page_freeform_code— PUT (atomic replace) a page's head or footerHow it works
Mirrors the existing
data_workflows_tool: a thin authenticatedfetchto the Data API using the caller's OAuth token. All access control — read/write scopes, the Custom Code entitlement, and the feature gate — is enforced API-side, so this stays a thin wrapper with no SDK change.How to test
Prereqs: connect the MCP server to a client (Claude Desktop / Cursor / MCP Inspector) with a token that has
sites:read|write+pages:read|writeand a workspace/site with the Custom Code entitlement. Grab aSITE_IDand aPAGE_ID(e.g. viadata_sites_tool/data_pages_tool).Natural-language prompts:
Read the freeform head and footer custom code on page PAGE_ID.Add <meta name="robots" content="noindex"> to the head custom code on page PAGE_ID, then read it back to confirm.Put a small console.log script in the footer custom code of page PAGE_ID.Show the site-wide freeform head and footer code for site SITE_ID.Add an Inter Google Font <link> tag to the site-wide head code for site SITE_ID.Clear the footer code on page PAGE_ID by setting it to an empty string.Direct tool calls (MCP Inspector):
{ "actions": [ { "get_page_freeform_code": { "page_id": "PAGE_ID" } } ] }{ "actions": [ { "set_page_freeform_code": { "page_id": "PAGE_ID", "location": "head", "content": "<meta name=\"robots\" content=\"noindex\">" } } ] }{ "actions": [ { "set_site_freeform_code": { "site_id": "SITE_ID", "location": "head", "content": "<link rel=\"stylesheet\" href=\"https://fonts.googleapis.com/css2?family=Inter&display=swap\">" } } ] }What to verify:
set_*followed by aget_*returns the samecontent.get_*with nolocationreturns both head and footer; withlocationreturns just that block.*:writescope → scope/authorization errorset_page_freeform_codewith a non-primarylocale_id→ validation error (page freeform code is single-locale today)contentover the custom-code character limit → validation errorTesting (build)
npx tsc --noEmit— passes, no type errorsnpm run build(tsup) — succeeds(No test suite exists in this repo; verification is typecheck + build.)
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