diff --git a/node/config.ts b/node/config.ts
index e51df8f4..5977a4a2 100644
--- a/node/config.ts
+++ b/node/config.ts
@@ -29,7 +29,7 @@ export const enum Cache {
 
 export interface FunctionConfig {
   cache?: Cache
-  path?: string
+  path?: string | string[]
 }
 
 const getConfigExtractor = () => {
diff --git a/node/declaration.test.ts b/node/declaration.test.ts
index 20b94dae..4238a9c2 100644
--- a/node/declaration.test.ts
+++ b/node/declaration.test.ts
@@ -9,19 +9,20 @@ const deployConfig = {
   layers: [],
 }
 
-test('In source config takes precedence over netlify.toml config', () => {
+test('In-source config takes precedence over netlify.toml config', () => {
   const tomlConfig = [
     { function: 'geolocation', path: '/geo', cache: 'off' },
     { function: 'json', path: '/json', cache: 'manual' },
   ]
 
   const funcConfig = {
-    geolocation: { path: '/geo-isc', cache: 'manual' },
+    geolocation: { path: ['/geo-isc', '/*'], cache: 'manual' },
     json: { path: '/json', cache: 'off' },
   } as Record<string, FunctionConfig>
 
   const expectedDeclarations = [
     { function: 'geolocation', path: '/geo-isc', cache: 'manual' },
+    { function: 'geolocation', path: '/*', cache: 'manual' },
     { function: 'json', path: '/json', cache: 'off' },
   ]
 
@@ -30,14 +31,14 @@ test('In source config takes precedence over netlify.toml config', () => {
   expect(declarations).toEqual(expectedDeclarations)
 })
 
-test("Declarations don't break if no in source config is provided", () => {
+test("Declarations don't break if no in-source config is provided", () => {
   const tomlConfig = [
     { function: 'geolocation', path: '/geo', cache: 'off' },
     { function: 'json', path: '/json', cache: 'manual' },
   ]
 
   const funcConfig = {
-    geolocation: { path: '/geo-isc', cache: 'manual' },
+    geolocation: { path: ['/geo-isc'], cache: 'manual' },
     json: {},
   } as Record<string, FunctionConfig>
 
@@ -51,11 +52,11 @@ test("Declarations don't break if no in source config is provided", () => {
   expect(declarations).toEqual(expectedDeclarations)
 })
 
-test('In source config works independent of the netlify.toml file if a path is defined and otherwise if no path is set', () => {
+test('In-source config works independent of the netlify.toml file if a path is defined and otherwise if no path is set', () => {
   const tomlConfig = [{ function: 'geolocation', path: '/geo', cache: 'off' }]
 
   const funcConfigWithPath = {
-    json: { path: '/json', cache: 'off' },
+    json: { path: ['/json', '/json-isc'], cache: 'off' },
   } as Record<string, FunctionConfig>
 
   const funcConfigWithoutPath = {
@@ -65,6 +66,7 @@ test('In source config works independent of the netlify.toml file if a path is d
   const expectedDeclarationsWithISCPath = [
     { function: 'geolocation', path: '/geo', cache: 'off' },
     { function: 'json', path: '/json', cache: 'off' },
+    { function: 'json', path: '/json-isc', cache: 'off' },
   ]
 
   const expectedDeclarationsWithoutISCPath = [{ function: 'geolocation', path: '/geo', cache: 'off' }]
@@ -75,3 +77,53 @@ test('In source config works independent of the netlify.toml file if a path is d
   const declarationsWithoutISCPath = getDeclarationsFromConfig(tomlConfig, funcConfigWithoutPath, deployConfig)
   expect(declarationsWithoutISCPath).toEqual(expectedDeclarationsWithoutISCPath)
 })
+
+test('In-source config works if only the cache config property is set', () => {
+  const tomlConfig = [{ function: 'geolocation', path: '/geo', cache: 'off' }]
+
+  const funcConfig = {
+    geolocation: { cache: 'manual' },
+  } as Record<string, FunctionConfig>
+
+  const expectedDeclarations = [{ function: 'geolocation', path: '/geo', cache: 'manual' }]
+
+  expect(getDeclarationsFromConfig(tomlConfig, funcConfig, deployConfig)).toEqual(expectedDeclarations)
+})
+
+test("In-source config path property works if it's not an array", () => {
+  const tomlConfig = [{ function: 'json', path: '/json-toml', cache: 'off' }]
+
+  const funcConfig = {
+    json: { path: '/json', cache: 'manual' },
+  } as Record<string, FunctionConfig>
+
+  const expectedDeclarations = [{ function: 'json', path: '/json', cache: 'manual' }]
+
+  expect(getDeclarationsFromConfig(tomlConfig, funcConfig, deployConfig)).toEqual(expectedDeclarations)
+})
+
+test("In-source config path property works if it's not an array and it's not present in toml or deploy config", () => {
+  const tomlConfig = [{ function: 'geolocation', path: '/geo', cache: 'off' }]
+  const funcConfig = {
+    json: { path: '/json-isc', cache: 'manual' },
+  } as Record<string, FunctionConfig>
+
+  const expectedDeclarations = [
+    { function: 'geolocation', path: '/geo', cache: 'off' },
+    { function: 'json', path: '/json-isc', cache: 'manual' },
+  ]
+
+  expect(getDeclarationsFromConfig(tomlConfig, funcConfig, deployConfig)).toEqual(expectedDeclarations)
+})
+
+test('In-source config works if path property is an empty array with cache value specified', () => {
+  const tomlConfig = [{ function: 'json', path: '/json-toml', cache: 'off' }]
+
+  const funcConfig = {
+    json: { path: [], cache: 'manual' },
+  } as Record<string, FunctionConfig>
+
+  const expectedDeclarations = [{ function: 'json', path: '/json-toml', cache: 'manual' }]
+
+  expect(getDeclarationsFromConfig(tomlConfig, funcConfig, deployConfig)).toEqual(expectedDeclarations)
+})
diff --git a/node/declaration.ts b/node/declaration.ts
index e8fc340a..d0edec04 100644
--- a/node/declaration.ts
+++ b/node/declaration.ts
@@ -30,19 +30,44 @@ export const getDeclarationsFromConfig = (
   // a function configuration object, we replace the path because that object
   // takes precedence.
   for (const declaration of [...tomlDeclarations, ...deployConfig.declarations]) {
-    const config = functionsConfig[declaration.function] ?? {}
+    const config = functionsConfig[declaration.function]
+
+    // If no config is found, add the declaration as is
+    if (!config) {
+      declarations.push(declaration)
+
+      // If we have a path specified as either a string or non-empty array
+      // create a declaration for each path
+    } else if (config.path?.length) {
+      const paths = Array.isArray(config.path) ? config.path : [config.path]
+
+      paths.forEach((path) => {
+        declarations.push({ ...declaration, ...config, path })
+      })
+
+      // With an in-source config without a path, add the config to the declaration
+    } else {
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars
+      const { path, ...rest } = config
+      declarations.push({ ...declaration, ...rest })
+    }
 
     functionsVisited.add(declaration.function)
-    declarations.push({ ...declaration, ...config })
   }
 
   // Finally, we must create declarations for functions that are not declared
   // in the TOML at all.
   for (const name in functionsConfig) {
-    const { path, ...config } = functionsConfig[name]
+    const { ...config } = functionsConfig[name]
+    const { path } = functionsConfig[name]
 
+    // If we have path specified create a declaration for each path
     if (!functionsVisited.has(name) && path) {
-      declarations.push({ ...config, function: name, path })
+      const paths = Array.isArray(path) ? path : [path]
+
+      paths.forEach((singlePath) => {
+        declarations.push({ ...config, function: name, path: singlePath })
+      })
     }
   }
 
diff --git a/package.json b/package.json
index 52baa772..c4306f73 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "test:dev": "run-s test:dev:*",
     "test:ci": "run-s test:ci:*",
     "test:dev:vitest": "cross-env FORCE_COLOR=0 vitest run",
+    "test:dev:vitest:watch": "cross-env FORCE_COLOR=0 vitest watch",
     "test:dev:deno": "deno test --allow-all deno",
     "test:ci:vitest": "cross-env FORCE_COLOR=0 vitest run",
     "test:ci:deno": "deno test --allow-all deno",