diff --git a/package-lock.json b/package-lock.json
index 3393bfeeb4..dd3652464e 100644
--- a/package-lock.json
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-      "funding": [
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-          "url": "https://github.com/sponsors/jimmywarting"
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-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/node-fetch"
+        "node": ">=18.20.0 <20 || >=20.12.1"
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@@ -24664,15 +24522,6 @@
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@@ -27093,21 +26942,6 @@
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-      "dev": true,
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@@ -28713,7 +28547,6 @@
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@@ -28722,8 +28555,7 @@
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-        "from2-string": "^1.1.0",
-        "nock": "^13.0.0",
+        "nock": "^14.0.0",
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diff --git a/packages/build/tests/core/snapshots/tests.js.md b/packages/build/tests/core/snapshots/tests.js.md
index 277f9bef75..c31928436a 100644
--- a/packages/build/tests/core/snapshots/tests.js.md
+++ b/packages/build/tests/core/snapshots/tests.js.md
@@ -1468,7 +1468,7 @@ Generated by [AVA](https://avajs.dev).
     [
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+        headers: 'accept accept-encoding accept-language authorization connection content-length host sec-fetch-mode user-agent',
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diff --git a/packages/build/tests/core/snapshots/tests.js.snap b/packages/build/tests/core/snapshots/tests.js.snap
index aa1ca0226d..79de53df97 100644
Binary files a/packages/build/tests/core/snapshots/tests.js.snap and b/packages/build/tests/core/snapshots/tests.js.snap differ
diff --git a/packages/build/tests/status/snapshots/tests.js.md b/packages/build/tests/status/snapshots/tests.js.md
index 6aeab9f83f..2c48e8b23b 100644
--- a/packages/build/tests/status/snapshots/tests.js.md
+++ b/packages/build/tests/status/snapshots/tests.js.md
@@ -73,7 +73,7 @@ Generated by [AVA](https://avajs.dev).
           text: undefined,
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+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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       },
@@ -162,7 +162,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" internal error',
           version: '1.0.0',
         },
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       },
@@ -274,7 +274,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" internal error',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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@@ -349,7 +349,7 @@ Generated by [AVA](https://avajs.dev).
           text: undefined,
           version: '1.0.0',
         },
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+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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       },
@@ -414,7 +414,7 @@ Generated by [AVA](https://avajs.dev).
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           version: undefined,
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-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -505,7 +505,7 @@ Generated by [AVA](https://avajs.dev).
           text: undefined,
           version: undefined,
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -519,7 +519,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./two.js" internal error',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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@@ -584,7 +584,7 @@ Generated by [AVA](https://avajs.dev).
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           version: undefined,
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-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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@@ -651,7 +651,7 @@ Generated by [AVA](https://avajs.dev).
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-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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@@ -719,7 +719,7 @@ Generated by [AVA](https://avajs.dev).
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-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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@@ -787,7 +787,7 @@ Generated by [AVA](https://avajs.dev).
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         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
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@@ -1054,7 +1054,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'title',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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@@ -1068,7 +1068,7 @@ Generated by [AVA](https://avajs.dev).
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           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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@@ -1081,7 +1081,7 @@ Generated by [AVA](https://avajs.dev).
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-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
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@@ -1094,7 +1094,7 @@ Generated by [AVA](https://avajs.dev).
           text: 'text',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -1108,7 +1108,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'title ./two.js',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
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@@ -1459,7 +1459,7 @@ Generated by [AVA](https://avajs.dev).
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         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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       },
@@ -1533,7 +1533,7 @@ Generated by [AVA](https://avajs.dev).
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         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -1620,7 +1620,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" failed',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -1713,7 +1713,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" failed',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -1781,7 +1781,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Build canceled by ./plugin.js',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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         url: '/api/v1/deploys/test/plugin_runs',
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@@ -1937,7 +1937,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" internal error',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
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@@ -2026,7 +2026,7 @@ Generated by [AVA](https://avajs.dev).
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           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
         method: 'POST',
         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -2119,7 +2119,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" internal error',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
         method: 'POST',
         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -2212,7 +2212,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" internal error',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
         method: 'POST',
         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -2299,7 +2299,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" internal error',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
         method: 'POST',
         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -2398,7 +2398,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" invalid input "test"',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
         method: 'POST',
         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -2494,7 +2494,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./one" internal error',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
         method: 'POST',
         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -2505,7 +2505,7 @@ Generated by [AVA](https://avajs.dev).
           text: undefined,
           version: undefined,
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
         method: 'POST',
         url: '/api/v1/deploys/test/plugin_runs',
       },
@@ -2595,7 +2595,7 @@ Generated by [AVA](https://avajs.dev).
           title: 'Plugin "./plugin.js" failed',
           version: '1.0.0',
         },
-        headers: 'accept accept-encoding authorization connection content-length content-type host user-agent',
+        headers: 'accept accept-encoding accept-language authorization connection content-length content-type host sec-fetch-mode user-agent',
         method: 'POST',
         url: '/api/v1/deploys/test/plugin_runs',
       },
diff --git a/packages/build/tests/status/snapshots/tests.js.snap b/packages/build/tests/status/snapshots/tests.js.snap
index 5de711b77b..996f136ef2 100644
Binary files a/packages/build/tests/status/snapshots/tests.js.snap and b/packages/build/tests/status/snapshots/tests.js.snap differ
diff --git a/packages/js-client/README.md b/packages/js-client/README.md
index 1b39ead1e1..8014006c05 100644
--- a/packages/js-client/README.md
+++ b/packages/js-client/README.md
@@ -94,8 +94,8 @@ const params = {
 }
 ```
 
-Optional `opts` can include any property you want passed to [`node-fetch`](https://github.com/bitinn/node-fetch). The
-`headers` property is merged with some `defaultHeaders`.
+Optional `opts` can include any property you want passed to `fetch`. The `headers` property is merged with some
+`defaultHeaders`.
 
 ```js
 // example opts
@@ -105,7 +105,7 @@ const opts = {
     'User-agent': 'netlify-js-client',
     accept: 'application/json',
   },
-  // any other properties for node-fetch
+  // any other properties for fetch
 }
 ```
 
diff --git a/packages/js-client/package.json b/packages/js-client/package.json
index fd88ae7c66..7b0b4b0106 100644
--- a/packages/js-client/package.json
+++ b/packages/js-client/package.json
@@ -44,7 +44,6 @@
     "@netlify/open-api": "^2.37.0",
     "lodash-es": "^4.17.21",
     "micro-api-client": "^3.3.0",
-    "node-fetch": "^3.0.0",
     "p-wait-for": "^5.0.0",
     "qs": "^6.9.6"
   },
@@ -53,8 +52,7 @@
     "@types/node": "^18.0.0",
     "ava": "^5.0.0",
     "c8": "^10.0.0",
-    "from2-string": "^1.1.0",
-    "nock": "^13.0.0",
+    "nock": "^14.0.0",
     "ts-node": "^10.9.1",
     "typescript": "^5.0.0",
     "uuid": "^11.0.0"
diff --git a/packages/js-client/src/index.test.ts b/packages/js-client/src/index.test.ts
index dab39aca35..4dd8392f6d 100644
--- a/packages/js-client/src/index.test.ts
+++ b/packages/js-client/src/index.test.ts
@@ -1,7 +1,6 @@
-import http from 'http'
+import { Readable } from 'node:stream'
 
 import test from 'ava'
-import fromString from 'from2-string'
 import { TextHTTPError, JSONHTTPError } from 'micro-api-client'
 import nock from 'nock'
 import { v4 as uuidv4 } from 'uuid'
@@ -16,18 +15,6 @@ const host = `${domain}:${port}`
 const origin = `${scheme}://${host}`
 const testAccessToken = 'testAccessToken'
 
-const AGENT_KEEP_ALIVE_MSECS = 60_000
-const AGENT_MAX_SOCKETS = 10
-const AGENT_MAX_FREE_SOCKETS = 10
-const AGENT_TIMEOUT = 60_000
-const agent = new http.Agent({
-  keepAlive: true,
-  keepAliveMsecs: AGENT_KEEP_ALIVE_MSECS,
-  maxSockets: AGENT_MAX_SOCKETS,
-  maxFreeSockets: AGENT_MAX_FREE_SOCKETS,
-  timeout: AGENT_TIMEOUT,
-})
-
 const getClient = function (opts: any = {}) {
   return new NetlifyAPI(opts.accessToken, { scheme, host, pathPrefix, ...opts })
 }
@@ -38,7 +25,6 @@ test('Default options', (t) => {
   t.is(client.host, 'api.netlify.com')
   t.is(client.pathPrefix, '/api/v1')
   t.is(client.accessToken, null)
-  t.is(client.agent, undefined)
   t.deepEqual(client.globalParams, {})
   t.deepEqual(client.defaultHeaders, {
     'User-agent': 'netlify/js-client',
@@ -224,7 +210,12 @@ test('Can specify binary request body as a stream', async (t) => {
     .reply(200, expectedResponse)
 
   const client: any = getClient()
-  const response = await client.uploadDeployFile({ deploy_id: deployId, path, body: fromString(body) })
+  const response = await client.uploadDeployFile({
+    deploy_id: deployId,
+    path,
+    body: Readable.from(body),
+    duplex: 'half',
+  })
 
   t.deepEqual(response, expectedResponse)
   t.true(scope.isDone())
@@ -240,7 +231,12 @@ test('Can specify binary request body as a function', async (t) => {
     .reply(200, expectedResponse)
 
   const client: any = getClient()
-  const response = await client.uploadDeployFile({ deploy_id: deployId, path, body: () => fromString(body) })
+  const response = await client.uploadDeployFile({
+    deploy_id: deployId,
+    path,
+    body: () => Readable.from(body),
+    duplex: 'half',
+  })
 
   t.deepEqual(response, expectedResponse)
   t.true(scope.isDone())
@@ -273,7 +269,8 @@ test('Can set header parameters', async (t) => {
   const response = await client.uploadDeployFunction({
     deploy_id: deployId,
     name: functionName,
-    body: fromString(body),
+    body: Readable.from(body),
+    duplex: 'half',
     xNfRetryCount: retryCount,
   })
 
@@ -349,7 +346,6 @@ test('Handle error empty responses', async (t) => {
   const error: any = await t.throwsAsync(client.getAccount({ account_id: accountId }))
 
   t.is(error.status, status)
-  t.is(error.message, expectedResponse)
   t.is(error.data, expectedResponse)
   t.true(error instanceof TextHTTPError)
   t.true(error.stack !== undefined)
@@ -366,7 +362,6 @@ test('Handle error text responses', async (t) => {
   const error: any = await t.throwsAsync(client.getAccount({ account_id: accountId }))
 
   t.is(error.status, status)
-  t.is(error.message, expectedResponse)
   t.is(error.data, expectedResponse)
   t.true(error instanceof TextHTTPError)
   t.true(error.stack !== undefined)
@@ -385,7 +380,6 @@ test('Handle error text responses on JSON endpoints', async (t) => {
   const error: any = await t.throwsAsync(client.getAccount({ account_id: accountId }))
 
   t.is(error.status, status)
-  t.is(error.message, expectedResponse)
   t.is(error.data, expectedResponse)
   t.true(error instanceof TextHTTPError)
   t.true(error.stack !== undefined)
@@ -402,7 +396,6 @@ test('Handle error JSON responses', async (t) => {
   const error: any = await t.throwsAsync(client.getAccount({ account_id: accountId }))
 
   t.is(error.status, status)
-  t.notThrows(() => JSON.parse(error.message))
   t.deepEqual(error.json, errorJson)
   t.true(error instanceof JSONHTTPError)
   t.true(error.stack !== undefined)
@@ -511,7 +504,7 @@ test('Does not retry on server errors', async (t) => {
   const error: any = await t.throwsAsync(client.getAccount({ account_id: accountId }))
 
   t.is(error.status, 500)
-  t.is(error.message, errorMessage)
+  t.is(error.data, errorMessage)
   t.false(scope.isDone())
 })
 
@@ -541,7 +534,7 @@ test('Handles API rate limiting', async (t) => {
   const expectedResponse = { test: 'test' }
   const scope = nock(origin)
     .get(`${pathPrefix}/accounts/${accountId}`)
-    .reply(429, { retryAt }, { 'X-RateLimit-Reset': retryAt })
+    .reply(429, { retryAt }, { 'X-RateLimit-Reset': retryAt.toString() })
     .get(`${pathPrefix}/accounts/${accountId}`)
     .reply(200, expectedResponse)
 
@@ -556,9 +549,10 @@ test('Handles API rate limiting', async (t) => {
 test('Handles API rate limiting when date is in the past', async (t) => {
   const accountId = uuidv4()
   const expectedResponse = { test: 'test' }
+  const retryAt = '0'
   const scope = nock(origin)
     .get(`${pathPrefix}/accounts/${accountId}`)
-    .reply(429, { retryAt: 0 }, { 'X-RateLimit-Reset': 0 })
+    .reply(429, { retryAt }, { 'X-RateLimit-Reset': retryAt.toString() })
     .get(`${pathPrefix}/accounts/${accountId}`)
     .reply(200, expectedResponse)
 
@@ -592,7 +586,7 @@ test('Gives up retrying on API rate limiting after a timeout', async (t) => {
   const scope = nock(origin)
     .get(`${pathPrefix}/accounts/${accountId}`)
     .times(times)
-    .reply(429, { retryAt }, { 'X-RateLimit-Reset': retryAt })
+    .reply(429, { retryAt }, { 'X-RateLimit-Reset': retryAt.toString() })
     .get(`${pathPrefix}/accounts/${accountId}`)
     .reply(200, expectedResponse)
 
@@ -600,7 +594,7 @@ test('Gives up retrying on API rate limiting after a timeout', async (t) => {
   const error: any = await t.throwsAsync(client.getAccount({ account_id: accountId }))
 
   t.is(error.status, 429)
-  t.is(error.message, JSON.stringify({ retryAt }))
+  t.deepEqual(error.json, { retryAt })
   t.true(Number.isInteger(error.json.retryAt))
 
   t.false(scope.isDone())
@@ -612,9 +606,12 @@ errorCodes.forEach((code) => {
     const accountId = uuidv4()
     const retryAtMs = Date.now() + TEST_RATE_LIMIT_DELAY
     const expectedResponse = { test: 'test' }
+    const error = new Error('Error Response') as NodeJS.ErrnoException
+    error.code = code
+
     const scope = nock(origin)
       .get(`${pathPrefix}/accounts/${accountId}`)
-      .replyWithError({ code })
+      .replyWithError(error)
       .get(`${pathPrefix}/accounts/${accountId}`)
       .reply(200, expectedResponse)
 
@@ -636,39 +633,21 @@ test('Recreates a function body when handling API rate limiting', async (t) => {
   const expectedResponse = { test: 'test' }
   const scope = nock(origin)
     .put(`${pathPrefix}/deploys/${deployId}/files/${path}`, body, { 'Content-Type': 'application/octet-stream' } as any)
-    .reply(429, { retryAt }, { 'X-RateLimit-Reset': retryAt })
+    .reply(429, { retryAt }, { 'X-RateLimit-Reset': retryAt.toString() })
     .put(`${pathPrefix}/deploys/${deployId}/files/${path}`, body, { 'Content-Type': 'application/octet-stream' } as any)
     .reply(200, expectedResponse)
   const client: any = getClient()
-  const response = await client.uploadDeployFile({ deploy_id: deployId, path, body: () => fromString(body) })
+  const response = await client.uploadDeployFile({
+    deploy_id: deployId,
+    path,
+    body: () => Readable.from(body),
+    duplex: 'half',
+  })
 
   t.true(Date.now() >= retryAtMs)
   t.deepEqual(response, expectedResponse)
   t.true(scope.isDone())
 })
 
-test('Can set (proxy) agent', (t) => {
-  const client: any = getClient({ accessToken: testAccessToken, agent })
-  t.is(client.agent, agent)
-})
-
-test('(Proxy) agent is passed as request option', async (t) => {
-  const accountId = uuidv4()
-  const scope = nock(origin).get(`${pathPrefix}/accounts/${accountId}`).reply(200)
-
-  const client: any = getClient({ accessToken: testAccessToken, agent })
-  await client.getAccount({ account_id: accountId })
-  t.is((scope as any).interceptors[0].req.options.agent, agent)
-})
-
-test('(Proxy) agent is not passed as request option if not set', async (t) => {
-  const accountId = uuidv4()
-  const scope = nock(origin).get(`${pathPrefix}/accounts/${accountId}`).reply(200)
-
-  const client: any = getClient({ accessToken: testAccessToken })
-  await client.getAccount({ account_id: accountId })
-  t.falsy((scope as any).interceptors[0].req.options.agent)
-})
-
 const TEST_RATE_LIMIT_DELAY = 5e3
 const SECS_TO_MSECS = 1e3
diff --git a/packages/js-client/src/index.ts b/packages/js-client/src/index.ts
index 189267fa49..1c39b99164 100644
--- a/packages/js-client/src/index.ts
+++ b/packages/js-client/src/index.ts
@@ -76,7 +76,6 @@ export class NetlifyAPI {
     const methods = getMethods({
       basePath: this.basePath,
       defaultHeaders: this.defaultHeaders,
-      agent: this.agent,
       globalParams: this.globalParams,
     })
     Object.assign(this, { ...methods })
diff --git a/packages/js-client/src/methods/index.js b/packages/js-client/src/methods/index.js
index d78df9a09a..325e5b5b9b 100644
--- a/packages/js-client/src/methods/index.js
+++ b/packages/js-client/src/methods/index.js
@@ -1,5 +1,3 @@
-import fetch from 'node-fetch'
-
 import { getOperations } from '../operations.js'
 
 import { addBody } from './body.js'
@@ -10,36 +8,36 @@ import { getUrl } from './url.js'
 
 // For each OpenAPI operation, add a corresponding method.
 // The `operationId` is the method name.
-export const getMethods = function ({ basePath, defaultHeaders, agent, globalParams }) {
+export const getMethods = function ({ basePath, defaultHeaders, globalParams }) {
   const operations = getOperations()
-  const methods = operations.map((method) => getMethod({ method, basePath, defaultHeaders, agent, globalParams }))
+  const methods = operations.map((method) => getMethod({ method, basePath, defaultHeaders, globalParams }))
   return Object.assign({}, ...methods)
 }
 
-const getMethod = function ({ method, basePath, defaultHeaders, agent, globalParams }) {
+const getMethod = function ({ method, basePath, defaultHeaders, globalParams }) {
   return {
     [method.operationId](params, opts) {
-      return callMethod({ method, basePath, defaultHeaders, agent, globalParams, params, opts })
+      return callMethod({ method, basePath, defaultHeaders, globalParams, params, opts })
     },
   }
 }
 
-const callMethod = async function ({ method, basePath, defaultHeaders, agent, globalParams, params, opts }) {
+const callMethod = async function ({ method, basePath, defaultHeaders, globalParams, params, opts }) {
   const requestParams = { ...globalParams, ...params }
   const url = getUrl(method, basePath, requestParams)
-  const response = await makeRequestOrRetry({ url, method, defaultHeaders, agent, requestParams, opts })
+  const response = await makeRequestOrRetry({ url, method, defaultHeaders, requestParams, opts })
 
   const parsedResponse = await parseResponse(response)
   return parsedResponse
 }
 
-const getOpts = function ({ method: { verb, parameters }, defaultHeaders, agent, requestParams, opts }) {
-  const { body } = requestParams
+const getOpts = function ({ method: { verb, parameters }, defaultHeaders, requestParams, opts }) {
+  const { body, duplex } = requestParams
   const optsA = addHttpMethod(verb, opts)
   const optsB = addHeaderParams(parameters, requestParams, optsA)
   const optsC = addDefaultHeaders(defaultHeaders, optsB)
   const optsD = addBody(body, parameters, optsC)
-  const optsE = addAgent(agent, optsD)
+  const optsE = addDuplex(duplex, optsD)
   return optsE
 }
 
@@ -62,18 +60,19 @@ const addDefaultHeaders = function (defaultHeaders, opts) {
   return { ...opts, headers: { ...defaultHeaders, ...opts.headers } }
 }
 
-// Assign fetch agent (like for example HttpsProxyAgent) if there is one
-const addAgent = function (agent, opts) {
-  if (agent) {
-    return { ...opts, agent }
+// Set duplex value
+const addDuplex = function (duplex, opts) {
+  if (duplex === undefined) {
+    return opts
   }
-  return opts
+
+  return { ...opts, duplex }
 }
 
-const makeRequestOrRetry = async function ({ url, method, defaultHeaders, agent, requestParams, opts }) {
+const makeRequestOrRetry = async function ({ url, method, defaultHeaders, requestParams, opts }) {
   // Using a loop is simpler here
   for (let index = 0; index <= MAX_RETRY; index++) {
-    const optsA = getOpts({ method, defaultHeaders, agent, requestParams, opts })
+    const optsA = getOpts({ method, defaultHeaders, requestParams, opts })
     const { response, error } = await makeRequest(url, optsA)
 
     if (shouldRetry({ response, error, method }) && index !== MAX_RETRY) {
diff --git a/packages/js-client/src/methods/response.js b/packages/js-client/src/methods/response.js
index 5316c46aa0..1de50f5637 100644
--- a/packages/js-client/src/methods/response.js
+++ b/packages/js-client/src/methods/response.js
@@ -1,7 +1,9 @@
-import { JSONHTTPError, TextHTTPError } from 'micro-api-client'
-
 import omit from '../omit.js'
 
+class TextHTTPError extends Error {}
+
+class JSONHTTPError extends Error {}
+
 // Read and parse the HTTP response
 export const parseResponse = async function (response) {
   const responseType = getResponseType(response)
diff --git a/packages/js-client/src/types.ts b/packages/js-client/src/types.ts
index 8a12521a41..6967709b41 100644
--- a/packages/js-client/src/types.ts
+++ b/packages/js-client/src/types.ts
@@ -1,7 +1,6 @@
 import type { ReadStream } from 'node:fs'
 
 import type { operations } from '@netlify/open-api'
-import type { RequestInit } from 'node-fetch'
 
 /**
  * Determines whether all keys in T are optional.
@@ -206,7 +205,7 @@ export type DynamicMethods = {
   [K in keyof operations]: (
     params: OperationParams<K>,
     /**
-     * Any properties you want passed to `node-fetch`.
+     * Any properties you want passed to `fetch`.
      *
      * The `headers` property is merged with some `defaultHeaders`:
      * ```ts