diff --git a/tools/echo.js b/tools/echo.js
deleted file mode 100644
index 2e213ba..0000000
--- a/tools/echo.js
+++ /dev/null
@@ -1,15 +0,0 @@
-export default {
-  type: "function", name: "echo", description: "Echoes back the input string provided", strict: true,
-  parameters: {
-    type: "object", additionalProperties: false, required: [ "input" ],
-    properties: { "input": { type: "string", description: "The text to be echoed back" } }
-  }
-};
-
-export async function run(args) {
-  const text = typeof args?.text === 'string' ? args.text : '';
-  if (!text) {
-    return { error: 'Missing required parameter: text' };
-  }
-  return { content: text };
-}
diff --git a/tools/read_file.js b/tools/read_file.js
new file mode 100644
index 0000000..6f00425
--- /dev/null
+++ b/tools/read_file.js
@@ -0,0 +1,14 @@
+const virtual_chroot = '/home/seb/src/aiTools/tmp';
+
+export default {
+    type: "function", name: "read_file", description: "read a file", strict: true,
+    parameters: {
+        type: "object", required: ["path","linesToSkip","linesToRead"],additionalProperties: false, properties: {
+            path: { type: "string",   description: "The path to the file to read.",},
+            linesToSkip: { type: "number", description: "The number of lines to skip. Use 0 to read from the beginning.",},
+            linesToRead: { type: "number",description: "1-400 The number of lines to read. Use 0 or more than 400 to read 400 lines.",}
+},},};
+
+export async function run() {
+    return `read_file error (not implemented)`
+}
diff --git a/tools/ripgrep.js b/tools/ripgrep.js
new file mode 100644
index 0000000..62e2869
--- /dev/null
+++ b/tools/ripgrep.js
@@ -0,0 +1,16 @@
+const virtual_chroot = '/home/seb/src/aiTools/tmp';
+
+export default {
+    type: "function", name: "ripgrep", strict: true,
+    description: "ripgrep (rg) search ( rg pattern -g filePattern | head -200) , always limited to 200 lines",
+    parameters: {
+        type: "object", required: ["pattern","filePattern","n_flag","i_flag"], additionalProperties: false,  properties: {
+            pattern: {type: "string", description: 'The pattern to search for.'},
+            filePattern: { type: "string", description: "'*.js' for only js files, '!*.log' for all files except log files , '' for all files"}, 
+            n_flag: {  type: "boolean",description: "show line numbers."},
+            i_flag: { type: "boolean",description: "case insensitive search."}
+},},};
+
+export async function run(args) {
+    return `ripgrep error (not implemented)`
+}
\ No newline at end of file