Add Ruby gems and other ecosystems to depscore tool

The Socket API already supports gem, golang, maven, nuget, and cargo
ecosystems via PURL format, but the depscore tool description only
listed npm and pypi. This caused AI clients to not recognize Ruby gems
as a supported ecosystem.

Update the ecosystem field description to list all supported ecosystems
and add test coverage for gem packages (puma, rails, nokogiri).

Author: dc-larsen

index.ts

@@ -88,7 +88,7 @@ function createConfiguredServer (): McpServer {
       description: "Get the dependency score of packages with the `depscore` tool from Socket. Use 'unknown' for version if not known. Use this tool to scan dependencies for their quality and security on existing code or when code is generated. Stop generating code and ask the user how to proceed when any of the scores are low. When checking dependencies, make sure to also check the imports in the code, not just the manifest files (pyproject.toml, package.json, etc).",
       inputSchema: {
         packages: z.array(z.object({
-          ecosystem: z.string().describe('The package ecosystem (e.g., npm, pypi)').default('npm'),
+          ecosystem: z.string().describe('The package ecosystem (e.g., npm, pypi, gem, golang, maven, nuget, cargo)').default('npm'),
           depname: z.string().describe('The name of the dependency'),
           version: z.string().describe("The version of the dependency, use 'unknown' if not known").default('unknown'),
         })).describe('Array of packages to check'),

test.ts

@@ -45,6 +45,7 @@ test('Socket MCP Server', async (t) => {
       { depname: 'lodash', ecosystem: 'npm', version: '4.17.21' },
       { depname: 'react', ecosystem: 'npm', version: '18.2.0' },
       { depname: 'requests', ecosystem: 'pypi', version: '2.31.0' },
+      { depname: 'puma', ecosystem: 'gem', version: '6.4.0' },
       { depname: 'unknown-package', ecosystem: 'npm', version: 'unknown' }
     ]
 
@@ -61,6 +62,30 @@ test('Socket MCP Server', async (t) => {
     assert.ok(result.content.length > 0, 'Content should not be empty')
   })
 
+  await t.test('call depscore tool with gem ecosystem', async () => {
+    const gemPackages = [
+      { depname: 'puma', ecosystem: 'gem', version: '6.4.0' },
+      { depname: 'rails', ecosystem: 'gem', version: '7.1.0' },
+      { depname: 'nokogiri', ecosystem: 'gem', version: '1.16.0' }
+    ]
+
+    const result = await client.callTool({
+      name: 'depscore',
+      arguments: {
+        packages: gemPackages
+      }
+    })
+
+    assert.ok(result, 'Should get a result from depscore for gem packages')
+    assert.ok(result.content, 'Result should have content')
+    assert.ok(Array.isArray(result.content), 'Content should be an array')
+    assert.ok(result.content.length > 0, 'Content should not be empty')
+
+    const textContent = result.content[0] as { type: string; text: string }
+    assert.ok(textContent.text.includes('pkg:gem/'), 'Result should contain gem purl format')
+    assert.ok(!textContent.text.includes('No score found'), 'Gem packages should have scores')
+  })
+
   await t.test('close client', async () => {
     await client.close()
     assert.ok(true, 'Client closed successfully')