feat: offer krill, the free SERPdive model

SERPdive serves three models; this integration listed two, so the free one was
not selectable. `krill` is free and unlimited under fair use — no card, no
credits — and returns a smaller set of the same sentences, one request at a
time, at low priority, with no written answer.

Added to the existing selector and its description. `mako` remains the
default, so existing flows are unchanged.

Author: edendalexis

apps/docs/content/docs/en/integrations/serpdive.mdx

@@ -43,8 +43,8 @@ Search the web with SERPdive. Each result carries the extracted, answer-ready co
 | Parameter | Type | Required | Description |
 | --------- | ---- | -------- | ----------- |
 | `query` | string | Yes | The search query, phrased as a question or topic, in any language \(e.g., "what changed in the latest Next.js release"\). Maximum 300 characters. |
-| `model` | string | No | Retrieval depth: mako \(1 credit\) returns the fact-carrying sentences of each source, moby \(1.5 credits\) returns the full readable content of every page \(e.g., "mako"\) |
-| `answer` | boolean | No | Also return a written answer built from the sources: concise on mako, detailed with citations on moby. No extra credits. |
+| `model` | string | No | Retrieval depth: mako \(1 credit\) returns the fact-carrying sentences of each source, krill \(free, unlimited under fair use\) returns a smaller set of them at low priority, moby \(1.5 credits\) returns the full readable content of every page \(e.g., "mako"\) |
+| `answer` | boolean | No | Also return a written answer built from the sources: concise on mako, detailed with citations on moby; not available on krill. No extra credits. |
 | `max_results` | number | No | Hard cap on delivered results, keeping the best-ranked ones \(1-10, e.g., 5\). Omit to get everything relevant. |
 | `apiKey` | string | Yes | SERPdive API Key |
 
@@ -60,7 +60,7 @@ Search the web with SERPdive. Each result carries the extracted, answer-ready co
 |   ↳ `date` | string | Publication date when known, ISO YYYY-MM-DD |
 | `answer` | string | Written answer built from the sources \(if requested\) |
 | `extra_info` | object | Structured direct-answer block \(weather, exchange rates, live scores...\) when the query has one |
-| `model` | string | The retrieval model that answered: mako or moby |
+| `model` | string | The retrieval model that answered: mako, krill or moby |
 | `response_time_ms` | number | Time taken for the search request in milliseconds |
 
 

apps/sim/blocks/blocks/serpdive.ts

@@ -29,6 +29,7 @@ export const SerpdiveBlock: BlockConfig<SerpdiveSearchResponse> = {
       type: 'dropdown',
       options: [
         { label: 'Mako (fast, key sentences)', id: 'mako' },
+        { label: 'Krill (free, unlimited)', id: 'krill' },
         { label: 'Moby (full page content)', id: 'moby' },
       ],
       value: () => 'mako',
@@ -63,7 +64,7 @@ export const SerpdiveBlock: BlockConfig<SerpdiveSearchResponse> = {
   inputs: {
     query: { type: 'string', description: 'Search query' },
     apiKey: { type: 'string', description: 'SERPdive API key' },
-    model: { type: 'string', description: 'Retrieval depth: mako or moby' },
+    model: { type: 'string', description: 'Retrieval depth: mako, krill or moby' },
     answer: { type: 'boolean', description: 'Also return a written answer built from the sources' },
     max_results: { type: 'number', description: 'Hard cap on delivered results (1-10)' },
   },

apps/sim/tools/serpdive/search.ts

@@ -22,7 +22,7 @@ export const searchTool: ToolConfig<SerpdiveSearchParams, SerpdiveSearchResponse
       required: false,
       visibility: 'user-or-llm',
       description:
-        'Retrieval depth: mako (1 credit) returns the fact-carrying sentences of each source, moby (1.5 credits) returns the full readable content of every page (e.g., "mako")',
+        'Retrieval depth: mako (1 credit) returns the fact-carrying sentences of each source, krill (free, unlimited under fair use) returns a smaller set of them at low priority, moby (1.5 credits) returns the full readable content of every page (e.g., "mako")',
     },
     answer: {
       type: 'boolean',