text-editor-tool changedagents-and-tools/tool-use/text-editor-tool
Nearest release: v2.1.307, published 4 hours after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Recorded here
Lines+19added
Lines−26removed
From line
123
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits9to this page, all time
The whole hunk
from line 123, old and new numbered
/
from line 123
123123 Tools = [new ToolTextEditor20250728 { MaxCharacters = 10000 }],
124124 Messages =
125125 [
126 new()
126 new UserMessageParam
127127 {
128 Role = Role.User,
129128 Content = "There's a syntax error in my primes.py file. Can you help me fix it?",
130129 },
131130 ],
from line 470
471470 Tools = [new ToolTextEditor20250728()],
472471 Messages =
473472 [
474 new()
473 new UserMessageParam
475474 {
476 Role = Role.User,
477475 Content = "There's a syntax error in my primes.py file. Can you help me fix it?",
478476 },
479477 ],
from line 805
807805 Tools = [new ToolTextEditor20250728()],
808806 Messages =
809807 [
810 new()
808 new UserMessageParam
811809 {
812 Role = Role.User,
813810 Content = "There's a syntax error in my primes.py file. Can you help me fix it?",
814811 },
815 new()
812 new AssistantMessageParam
816813 {
817 Role = Role.Assistant,
818 Content = new MessageParamContent(new List<ContentBlockParam>
814 Content = new List<ContentBlockParam>
819815 {
820816 new ContentBlockParam(new TextBlockParam()
821817 {
from line 827
831827 ["path"] = JsonSerializer.SerializeToElement("primes.py"),
832828 },
833829 }),
834 }),
830 },
835831 },
836 new()
832 new UserMessageParam
837833 {
838 Role = Role.User,
839 Content = new MessageParamContent(new List<ContentBlockParam>
834 Content = new List<ContentBlockParam>
840835 {
841836 new ContentBlockParam(new ToolResultBlockParam()
842837 {
from line 838
843838 ToolUseID = "toolu_01AbCdEfGhIjKlMnOpQrStU",
844839 Content = "1: def is_prime(n):\n2: \"\"\"Check if a number is prime.\"\"\"\n3: if n <= 1:\n4: return False\n5: if n <= 3:\n6: return True\n7: if n % 2 == 0 or n % 3 == 0:\n8: return False\n9: i = 5\n10: while i * i <= n:\n11: if n % i == 0 or n % (i + 2) == 0:\n12: return False\n13: i += 6\n14: return True\n15: \n16: def get_primes(limit):\n17: \"\"\"Generate a list of prime numbers up to the given limit.\"\"\"\n18: primes = []\n19: for num in range(2, limit + 1)\n20: if is_prime(num):\n21: primes.append(num)\n22: return primes\n23: \n24: def main():\n25: \"\"\"Main function to demonstrate prime number generation.\"\"\"\n26: limit = 100\n27: prime_list = get_primes(limit)\n28: print(f\"Prime numbers up to {limit}:\")\n29: print(prime_list)\n30: print(f\"Found {len(prime_list)} prime numbers.\")\n31: \n32: if __name__ == \"__main__\":\n33: main()",
845840 }),
846 }),
841 },
847842 },
848843 ],
849844 }
from line 889
894889 .maxTokens(1024)
895890 .addTool(ToolTextEditor20250728.builder().build())
896891 .addUserMessage("There's a syntax error in my primes.py file. Can you help me fix it?")
897 .addAssistantMessageOfBlockParams(
892 .addAssistantMessageOfContentBlockParams(
898893 List.of(
899894 ContentBlockParam.ofText(
900895 TextBlockParam.builder()
from line 910
915910 )
916911 )
917912 )
918 .addUserMessageOfBlockParams(
913 .addUserMessageOfContentBlockParams(
919914 List.of(
920915 ContentBlockParam.ofToolResult(
921916 ToolResultBlockParam.builder()
from line 1234
12391234 Messages =
12401235 [
12411236 // Previous messages...
1242 new()
1237 new AssistantMessageParam
12431238 {
1244 Role = Role.Assistant,
1245 Content = new MessageParamContent(new List<ContentBlockParam>
1239 Content = new List<ContentBlockParam>
12461240 {
12471241 new ContentBlockParam(new TextBlockParam()
12481242 {
from line 1254
12601254 ["new_str"] = JsonSerializer.SerializeToElement(" for num in range(2, limit + 1):"),
12611255 },
12621256 }),
1263 }),
1257 },
12641258 },
1265 new()
1259 new UserMessageParam
12661260 {
1267 Role = Role.User,
1268 Content = new MessageParamContent(new List<ContentBlockParam>
1261 Content = new List<ContentBlockParam>
12691262 {
12701263 new ContentBlockParam(new ToolResultBlockParam()
12711264 {
from line 1265
12721265 ToolUseID = "toolu_01PqRsTuVwXyZAbCdEfGh",
12731266 Content = "Successfully replaced text at exactly one location.",
12741267 }),
1275 }),
1268 },
12761269 },
12771270 ],
12781271 }
from line 1321
13281321 .maxTokens(1024)
13291322 .addTool(ToolTextEditor20250728.builder().build())
13301323 // Previous messages would go here
1331 .addAssistantMessageOfBlockParams(
1324 .addAssistantMessageOfContentBlockParams(
13321325 List.of(
13331326 ContentBlockParam.ofText(
13341327 TextBlockParam.builder()
from line 1352
13591352 )
13601353 )
13611354 )
1362 .addUserMessageOfBlockParams(
1355 .addUserMessageOfContentBlockParams(
13631356 List.of(
13641357 ContentBlockParam.ofToolResult(
13651358 ToolResultBlockParam.builder()
No line in this hunk matches that.