diff --git a/src/core/assistant-message/NativeToolCallParser.ts b/src/core/assistant-message/NativeToolCallParser.ts
index a33822be28..4d3e4e55fd 100644
--- a/src/core/assistant-message/NativeToolCallParser.ts
+++ b/src/core/assistant-message/NativeToolCallParser.ts
@@ -328,45 +328,40 @@ export class NativeToolCallParser {
 				entry.mode = file.mode
 			}
 
-			// Map indentation configuration (accepts both camelCase and snake_case)
+			// Map indentation configuration
 			if (file.indentation && typeof file.indentation === "object") {
 				const indent = file.indentation
 				const indentConfig: FileEntry["indentation"] = {}
 
-				// anchorLine (camelCase) or anchor_line (snake_case)
-				const anchorLineValue = indent.anchorLine ?? indent.anchor_line
-				if (anchorLineValue !== undefined) {
-					const anchorLine = Number(anchorLineValue)
+				// anchorLine
+				if (indent.anchorLine !== undefined) {
+					const anchorLine = Number(indent.anchorLine)
 					if (!isNaN(anchorLine) && anchorLine > 0) {
 						indentConfig.anchorLine = anchorLine
 					}
 				}
 
-				// maxLevels (camelCase) or max_levels (snake_case)
-				const maxLevelsValue = indent.maxLevels ?? indent.max_levels
-				if (maxLevelsValue !== undefined) {
-					const maxLevels = Number(maxLevelsValue)
+				// maxLevels
+				if (indent.maxLevels !== undefined) {
+					const maxLevels = Number(indent.maxLevels)
 					if (!isNaN(maxLevels) && maxLevels >= 0) {
 						indentConfig.maxLevels = maxLevels
 					}
 				}
 
-				// includeSiblings (camelCase) or include_siblings (snake_case)
-				const includeSiblingsValue = indent.includeSiblings ?? indent.include_siblings
-				if (includeSiblingsValue !== undefined) {
-					indentConfig.includeSiblings = Boolean(includeSiblingsValue)
+				// includeSiblings
+				if (indent.includeSiblings !== undefined) {
+					indentConfig.includeSiblings = Boolean(indent.includeSiblings)
 				}
 
-				// includeHeader (camelCase) or include_header (snake_case)
-				const includeHeaderValue = indent.includeHeader ?? indent.include_header
-				if (includeHeaderValue !== undefined) {
-					indentConfig.includeHeader = Boolean(includeHeaderValue)
+				// includeHeader
+				if (indent.includeHeader !== undefined) {
+					indentConfig.includeHeader = Boolean(indent.includeHeader)
 				}
 
-				// maxLines (camelCase) or max_lines (snake_case)
-				const maxLinesValue = indent.maxLines ?? indent.max_lines
-				if (maxLinesValue !== undefined) {
-					const maxLines = Number(maxLinesValue)
+				// maxLines
+				if (indent.maxLines !== undefined) {
+					const maxLines = Number(indent.maxLines)
 					if (!isNaN(maxLines) && maxLines > 0) {
 						indentConfig.maxLines = maxLines
 					}
diff --git a/src/core/assistant-message/__tests__/NativeToolCallParser.spec.ts b/src/core/assistant-message/__tests__/NativeToolCallParser.spec.ts
index c7e99b604e..28ae53d2ab 100644
--- a/src/core/assistant-message/__tests__/NativeToolCallParser.spec.ts
+++ b/src/core/assistant-message/__tests__/NativeToolCallParser.spec.ts
@@ -50,9 +50,9 @@ describe("NativeToolCallParser", () => {
 								offset: 50,
 								mode: "indentation",
 								indentation: {
-									anchor_line: 55,
-									max_levels: 2,
-									include_siblings: true,
+									anchorLine: 55,
+									maxLevels: 2,
+									includeSiblings: true,
 								},
 							},
 						],
@@ -126,7 +126,7 @@ describe("NativeToolCallParser", () => {
 								path: "file2.ts",
 								offset: 100,
 								mode: "indentation",
-								indentation: { max_levels: 1 },
+								indentation: { maxLevels: 1 },
 							},
 							{
 								path: "file3.ts",
@@ -237,7 +237,7 @@ describe("NativeToolCallParser", () => {
 								path: "finalized.ts",
 								offset: 500,
 								mode: "indentation",
-								indentation: { anchor_line: 520 },
+								indentation: { anchorLine: 520 },
 							},
 						],
 					}),
diff --git a/src/integrations/misc/__tests__/read-file-content.spec.ts b/src/integrations/misc/__tests__/read-file-content.spec.ts
index 7507a7bbbe..bfa6fa6456 100644
--- a/src/integrations/misc/__tests__/read-file-content.spec.ts
+++ b/src/integrations/misc/__tests__/read-file-content.spec.ts
@@ -109,6 +109,15 @@ describe("read-file-content", () => {
 				expect(result.content).not.toContain("\r")
 			})
 		})
+
+		it("should only mark truncatedByLimit when more lines exist after endLine", async () => {
+			const content = "Line 1\nLine 2\nLine 3"
+			await withTempFile("slice-truncated-metadata-test.txt", content, async (filepath) => {
+				const result = await readSlice(filepath, 1, 3)
+				expect(result.metadata.hasMoreAfter).toBe(false)
+				expect(result.metadata.truncatedByLimit).toBe(false)
+			})
+		})
 	})
 
 	describe("readIndentationBlock", () => {
diff --git a/src/integrations/misc/read-file-content.ts b/src/integrations/misc/read-file-content.ts
index 39879c06c1..48bfae29e1 100644
--- a/src/integrations/misc/read-file-content.ts
+++ b/src/integrations/misc/read-file-content.ts
@@ -226,7 +226,7 @@ export async function readSlice(
 		let buffer = ""
 		let startLine = 0
 		let endLine = 0
-		let truncatedByLimit = false
+		let hitLimit = false
 
 		const input = createReadStream(filePath)
 
@@ -248,7 +248,7 @@ export async function readSlice(
 				lineNumber++
 
 				// Only collect content if we haven't hit the limit yet
-				if (!truncatedByLimit && lineNumber >= offset && collected.length < limit) {
+				if (!hitLimit && lineNumber >= offset && collected.length < limit) {
 					// Track first line collected
 					if (startLine === 0) {
 						startLine = lineNumber
@@ -265,7 +265,7 @@ export async function readSlice(
 
 					// Check if we've hit the limit
 					if (collected.length >= limit) {
-						truncatedByLimit = true
+						hitLimit = true
 						// Continue counting lines instead of destroying stream
 					}
 				}
@@ -281,7 +281,7 @@ export async function readSlice(
 			// Process any remaining data (last line without newline)
 			if (buffer.length > 0) {
 				lineNumber++
-				if (!truncatedByLimit && lineNumber >= offset && collected.length < limit) {
+				if (!hitLimit && lineNumber >= offset && collected.length < limit) {
 					if (startLine === 0) {
 						startLine = lineNumber
 					}
@@ -321,7 +321,9 @@ export async function readSlice(
 			}
 
 			const linesReturned = collected.length
+			const hasMoreAfter = endLine > 0 && endLine < totalLines
 			const linesAfterEnd = endLine > 0 ? totalLines - endLine : 0
+			const truncatedByLimit = hitLimit && hasMoreAfter
 
 			resolve({
 				content: collected.join("\n"),
@@ -334,7 +336,7 @@ export async function readSlice(
 					startLine: startLine || offset,
 					endLine: endLine || offset,
 					hasMoreBefore: (startLine || offset) > 1,
-					hasMoreAfter: linesAfterEnd > 0,
+					hasMoreAfter,
 					linesBeforeStart: (startLine || offset) - 1,
 					linesAfterEnd,
 					truncatedByLimit,