diff --git a/entry b/entry
index 5168328..ff83e30 100755
--- a/entry
+++ b/entry
@@ -121083,6 +121083,55 @@ function CreatePullRequestTool(ctx) {
   });
 }
 
+// mcp/commitInfo.ts
+import { writeFileSync as writeFileSync3 } from "node:fs";
+import { join as join5 } from "node:path";
+var CommitInfo = type({
+  sha: type.string.describe("the commit SHA (full or abbreviated) to fetch")
+});
+function CommitInfoTool(ctx) {
+  return tool({
+    name: "get_commit_info",
+    description: "Retrieve commit metadata and diff via GitHub API. Use this instead of git show for reviewing commits - it works with shallow clones and shows the actual changes in the commit. Returns diffPath pointing to formatted diff file.",
+    parameters: CommitInfo,
+    execute: execute(async ({ sha }) => {
+      const response = await ctx.octokit.rest.repos.getCommit({
+        owner: ctx.repo.owner,
+        repo: ctx.repo.name,
+        ref: sha
+      });
+      const data = response.data;
+      const files = data.files ?? [];
+      const diffContent = formatFilesWithLineNumbers(files);
+      const tempDir = process.env.PULLFROG_TEMP_DIR;
+      if (!tempDir) {
+        throw new Error(
+          "PULLFROG_TEMP_DIR not set - get_commit_info must run in pullfrog action context"
+        );
+      }
+      const diffFile = join5(tempDir, `commit-${sha.slice(0, 7)}.diff`);
+      writeFileSync3(diffFile, diffContent);
+      log.debug(`wrote commit diff to ${diffFile} (${diffContent.length} bytes)`);
+      return {
+        sha: data.sha,
+        message: data.commit.message,
+        author: data.author?.login ?? null,
+        committer: data.committer?.login ?? null,
+        date: data.commit.author?.date ?? data.commit.committer?.date ?? "",
+        url: data.html_url,
+        parents: data.parents.map((p) => p.sha),
+        stats: {
+          additions: data.stats?.additions ?? 0,
+          deletions: data.stats?.deletions ?? 0,
+          total: data.stats?.total ?? 0
+        },
+        fileCount: files.length,
+        diffFile
+      };
+    })
+  });
+}
+
 // mcp/prInfo.ts
 var CLOSING_ISSUES_QUERY = `
 query($owner: String!, $repo: String!, $number: Int!) {
@@ -121253,8 +121302,8 @@ function CreatePullRequestReviewTool(ctx) {
 }
 
 // mcp/reviewComments.ts
-import { writeFileSync as writeFileSync3 } from "node:fs";
-import { join as join5 } from "node:path";
+import { writeFileSync as writeFileSync4 } from "node:fs";
+import { join as join6 } from "node:path";
 var REPLY_TO_FRAGMENT = `
   replyTo {
     databaseId
@@ -121421,8 +121470,8 @@ function GetReviewCommentsTool(ctx) {
         throw new Error("PULLFROG_TEMP_DIR not set");
       }
       const filename = approved_by ? `review-${review_id}-approved-by-${approved_by}.xml` : `review-${review_id}-comments.xml`;
-      const commentsPath = join5(tempDir, filename);
-      writeFileSync3(commentsPath, content);
+      const commentsPath = join6(tempDir, filename);
+      writeFileSync4(commentsPath, content);
       log.info(`wrote ${comments.length} comments to ${commentsPath}`);
       log.box(content);
       return {
@@ -121568,6 +121617,7 @@ async function startMcpHttpServer(ctx) {
     CreatePullRequestTool(ctx),
     CreatePullRequestReviewTool(ctx),
     PullRequestInfoTool(ctx),
+    CommitInfoTool(ctx),
     CheckoutPrTool(ctx),
     GetReviewCommentsTool(ctx),
     ListPullRequestReviewsTool(ctx),
@@ -121766,7 +121816,7 @@ import { spawn as spawn3 } from "child_process";
 import { createInterface } from "readline";
 import * as fs2 from "fs";
 import { stat as statPromise, open } from "fs/promises";
-import { join as join6 } from "path";
+import { join as join7 } from "path";
 import { homedir } from "os";
 import { dirname, join as join22 } from "path";
 import { cwd } from "process";
@@ -128468,7 +128518,7 @@ function shouldShowDebugMessage(message, filter) {
   return shouldShowDebugCategories(categories, filter);
 }
 function getClaudeConfigHomeDir() {
-  return process.env.CLAUDE_CONFIG_DIR ?? join6(homedir(), ".claude");
+  return process.env.CLAUDE_CONFIG_DIR ?? join7(homedir(), ".claude");
 }
 function isEnvTruthy(envVar) {
   if (!envVar)
@@ -138375,7 +138425,7 @@ import { spawnSync as spawnSync2 } from "node:child_process";
 import { chmodSync, createWriteStream as createWriteStream2, existsSync as existsSync5 } from "node:fs";
 import { mkdtemp } from "node:fs/promises";
 import { tmpdir } from "node:os";
-import { join as join7 } from "node:path";
+import { join as join8 } from "node:path";
 import { pipeline } from "node:stream/promises";
 async function installFromNpmTarball(params) {
   let resolvedVersion = params.version;
@@ -138399,7 +138449,7 @@ async function installFromNpmTarball(params) {
   }
   log.debug(`\xBB installing ${params.packageName}@${resolvedVersion}...`);
   const tempDir = process.env.PULLFROG_TEMP_DIR;
-  const tarballPath = join7(tempDir, "package.tgz");
+  const tarballPath = join8(tempDir, "package.tgz");
   const npmRegistry = process.env.NPM_REGISTRY || "https://registry.npmjs.org";
   let tarballUrl;
   if (params.packageName.startsWith("@")) {
@@ -138428,8 +138478,8 @@ async function installFromNpmTarball(params) {
       `Failed to extract tarball: ${extractResult.stderr || extractResult.stdout || "Unknown error"}`
     );
   }
-  const extractedDir = join7(tempDir, "package");
-  const cliPath = join7(extractedDir, params.executablePath);
+  const extractedDir = join8(tempDir, "package");
+  const cliPath = join8(extractedDir, params.executablePath);
   if (!existsSync5(cliPath)) {
     throw new Error(`Executable not found in extracted package at ${cliPath}`);
   }
@@ -138491,10 +138541,10 @@ async function installFromGithub(params) {
   const assetUrl = asset.browser_download_url;
   log.debug(`\xBB downloading asset from ${assetUrl}...`);
   const tempDirPrefix = `${params.owner}-${params.repo}-github-`;
-  const tempDirPath = await mkdtemp(join7(tmpdir(), tempDirPrefix));
+  const tempDirPath = await mkdtemp(join8(tmpdir(), tempDirPrefix));
   const urlPath = new URL(assetUrl).pathname;
   const fileName3 = urlPath.split("/").pop() || "asset";
-  const downloadPath = join7(tempDirPath, fileName3);
+  const downloadPath = join8(tempDirPath, fileName3);
   const assetResponse = await fetchWithRetry(assetUrl, headers, "Failed to download asset");
   if (!assetResponse.body) throw new Error("Response body is null");
   const fileStream = createWriteStream2(downloadPath);
@@ -138502,7 +138552,7 @@ async function installFromGithub(params) {
   log.debug(`\xBB downloaded asset to ${downloadPath}`);
   let cliPath;
   if (params.executablePath) {
-    cliPath = join7(tempDirPath, params.executablePath);
+    cliPath = join8(tempDirPath, params.executablePath);
   } else {
     cliPath = downloadPath;
   }
@@ -138516,7 +138566,7 @@ async function installFromGithub(params) {
 async function installFromCurl(params) {
   log.info(`\xBB installing ${params.executableName}...`);
   const tempDir = process.env.PULLFROG_TEMP_DIR;
-  const installScriptPath = join7(tempDir, "install.sh");
+  const installScriptPath = join8(tempDir, "install.sh");
   log.debug(`\xBB downloading install script from ${params.installUrl}...`);
   const installScriptResponse = await fetch(params.installUrl);
   if (!installScriptResponse.ok) {
@@ -138535,7 +138585,7 @@ async function installFromCurl(params) {
       // ensuring a fresh install for each run
       HOME: tempDir,
       // XDG_CONFIG_HOME must match HOME so CLI tools find config in the right place
-      XDG_CONFIG_HOME: join7(tempDir, ".config"),
+      XDG_CONFIG_HOME: join8(tempDir, ".config"),
       SHELL: process.env.SHELL,
       USER: process.env.USER
     },
@@ -138548,7 +138598,7 @@ async function installFromCurl(params) {
       `Failed to install ${params.executableName}. Install script exited with code ${installResult.status}. Output: ${errorOutput}`
     );
   }
-  const cliPath = join7(tempDir, ".local", "bin", params.executableName);
+  const cliPath = join8(tempDir, ".local", "bin", params.executableName);
   if (!existsSync5(cliPath)) {
     throw new Error(`Executable not found at ${cliPath}`);
   }
@@ -138722,8 +138772,8 @@ var messageHandlers = {
 };
 
 // agents/codex.ts
-import { mkdirSync as mkdirSync3, writeFileSync as writeFileSync4 } from "node:fs";
-import { join as join8 } from "node:path";
+import { mkdirSync as mkdirSync3, writeFileSync as writeFileSync5 } from "node:fs";
+import { join as join9 } from "node:path";
 
 // node_modules/.pnpm/@openai+codex-sdk@0.80.0/node_modules/@openai/codex-sdk/dist/index.js
 import { promises as fs3 } from "fs";
@@ -139083,9 +139133,9 @@ var codexReasoningEffort = {
   max: "high"
 };
 function writeCodexConfig(ctx) {
-  const codexDir = join8(ctx.tmpdir, ".codex");
+  const codexDir = join9(ctx.tmpdir, ".codex");
   mkdirSync3(codexDir, { recursive: true });
-  const configPath = join8(codexDir, "config.toml");
+  const configPath = join9(codexDir, "config.toml");
   log.info(`\xBB adding MCP server '${ghPullfrogMcpName}' at ${ctx.mcpServerUrl}`);
   const mcpServerSections = [`[mcp_servers.${ghPullfrogMcpName}]
 url = "${ctx.mcpServerUrl}"`];
@@ -139097,7 +139147,7 @@ url = "${ctx.mcpServerUrl}"`];
   }
   const featuresSection = features.length > 0 ? `[features]
 ${features.join("\n")}` : "";
-  writeFileSync4(
+  writeFileSync5(
     configPath,
     `# written by pullfrog
 ${featuresSection}
@@ -139120,7 +139170,7 @@ var codex = agent({
   install: installCodex,
   run: async (ctx) => {
     const cliPath = await installCodex();
-    const configDir = join8(ctx.tmpdir, ".config", "codex");
+    const configDir = join9(ctx.tmpdir, ".config", "codex");
     mkdirSync3(configDir, { recursive: true });
     const codexDir = writeCodexConfig(ctx);
     process.env.HOME = ctx.tmpdir;
@@ -139265,9 +139315,9 @@ var messageHandlers2 = {
 
 // agents/cursor.ts
 import { spawn as spawn5 } from "node:child_process";
-import { existsSync as existsSync6, mkdirSync as mkdirSync4, readFileSync as readFileSync3, writeFileSync as writeFileSync5 } from "node:fs";
+import { existsSync as existsSync6, mkdirSync as mkdirSync4, readFileSync as readFileSync3, writeFileSync as writeFileSync6 } from "node:fs";
 import { homedir as homedir2 } from "node:os";
-import { join as join9 } from "node:path";
+import { join as join10 } from "node:path";
 var cursorEffortModels = {
   mini: null,
   // use default (auto)
@@ -139292,7 +139342,7 @@ var cursor = agent({
     const cliPath = await installCursor();
     configureCursorMcpServers(ctx);
     configureCursorTools(ctx);
-    const projectCliConfigPath = join9(process.cwd(), ".cursor", "cli.json");
+    const projectCliConfigPath = join10(process.cwd(), ".cursor", "cli.json");
     let modelOverride = null;
     if (existsSync6(projectCliConfigPath)) {
       try {
@@ -139457,21 +139507,21 @@ var cursor = agent({
   }
 });
 function getCursorConfigDir() {
-  return join9(homedir2(), ".cursor");
+  return join10(homedir2(), ".cursor");
 }
 function configureCursorMcpServers(ctx) {
   const cursorConfigDir = getCursorConfigDir();
-  const mcpConfigPath = join9(cursorConfigDir, "mcp.json");
+  const mcpConfigPath = join10(cursorConfigDir, "mcp.json");
   mkdirSync4(cursorConfigDir, { recursive: true });
   const mcpServers = {
     [ghPullfrogMcpName]: { type: "http", url: ctx.mcpServerUrl }
   };
-  writeFileSync5(mcpConfigPath, JSON.stringify({ mcpServers }, null, 2), "utf-8");
+  writeFileSync6(mcpConfigPath, JSON.stringify({ mcpServers }, null, 2), "utf-8");
   log.info(`\xBB MCP config written to ${mcpConfigPath}`);
 }
 function configureCursorTools(ctx) {
   const cursorConfigDir = getCursorConfigDir();
-  const cliConfigPath = join9(cursorConfigDir, "cli-config.json");
+  const cliConfigPath = join10(cursorConfigDir, "cli-config.json");
   mkdirSync4(cursorConfigDir, { recursive: true });
   const bash = ctx.payload.bash;
   const deny = [];
@@ -139490,14 +139540,14 @@ function configureCursorTools(ctx) {
       networkAccess: "allowlist"
     };
   }
-  writeFileSync5(cliConfigPath, JSON.stringify(config4, null, 2), "utf-8");
+  writeFileSync6(cliConfigPath, JSON.stringify(config4, null, 2), "utf-8");
   log.info(`\xBB CLI config written to ${cliConfigPath}`, JSON.stringify(config4, null, 2));
 }
 
 // agents/gemini.ts
-import { mkdirSync as mkdirSync5, readFileSync as readFileSync4, writeFileSync as writeFileSync6 } from "node:fs";
+import { mkdirSync as mkdirSync5, readFileSync as readFileSync4, writeFileSync as writeFileSync7 } from "node:fs";
 import { homedir as homedir3 } from "node:os";
-import { join as join10 } from "node:path";
+import { join as join11 } from "node:path";
 var geminiEffortConfig = {
   // https://ai.google.dev/gemini-api/docs/models
   // the docs mention needing to enable preview features for these models but if you
@@ -139668,8 +139718,8 @@ function configureGeminiSettings(ctx) {
   const { model, thinkingLevel } = geminiEffortConfig[ctx.payload.effort];
   log.info(`\xBB using model: ${model}, thinkingLevel: ${thinkingLevel}`);
   const realHome = homedir3();
-  const geminiConfigDir = join10(realHome, ".gemini");
-  const settingsPath = join10(geminiConfigDir, "settings.json");
+  const geminiConfigDir = join11(realHome, ".gemini");
+  const settingsPath = join11(geminiConfigDir, "settings.json");
   mkdirSync5(geminiConfigDir, { recursive: true });
   let existingSettings = {};
   try {
@@ -139706,7 +139756,7 @@ function configureGeminiSettings(ctx) {
     // v0.3.0+ nested format
     ...exclude.length > 0 && { tools: { exclude } }
   };
-  writeFileSync6(settingsPath, JSON.stringify(newSettings, null, 2), "utf-8");
+  writeFileSync7(settingsPath, JSON.stringify(newSettings, null, 2), "utf-8");
   log.info(`\xBB Gemini settings written to ${settingsPath}`);
   if (exclude.length > 0) {
     log.info(`\xBB excluded tools: ${exclude.join(", ")}`);
@@ -139715,8 +139765,8 @@ function configureGeminiSettings(ctx) {
 }
 
 // agents/opencode.ts
-import { mkdirSync as mkdirSync6, writeFileSync as writeFileSync7 } from "node:fs";
-import { join as join11 } from "node:path";
+import { mkdirSync as mkdirSync6, writeFileSync as writeFileSync8 } from "node:fs";
+import { join as join12 } from "node:path";
 async function installOpencode() {
   return await installFromNpmTarball({
     packageName: "opencode-ai",
@@ -139731,7 +139781,7 @@ var opencode = agent({
   run: async (ctx) => {
     const cliPath = await installOpencode();
     const tempHome = ctx.tmpdir;
-    const configDir = join11(tempHome, ".config", "opencode");
+    const configDir = join12(tempHome, ".config", "opencode");
     mkdirSync6(configDir, { recursive: true });
     configureOpenCode(ctx);
     const args3 = ["run", ctx.instructions.full, "--format", "json"];
@@ -139739,7 +139789,7 @@ var opencode = agent({
     const env3 = {
       ...process.env,
       HOME: tempHome,
-      XDG_CONFIG_HOME: join11(tempHome, ".config"),
+      XDG_CONFIG_HOME: join12(tempHome, ".config"),
       // set GOOGLE_GENERATIVE_AI_API_KEY alias for Google provider compatibility (if not already set)
       GOOGLE_GENERATIVE_AI_API_KEY: process.env.GOOGLE_GENERATIVE_AI_API_KEY || process.env.GEMINI_API_KEY
     };
@@ -139842,9 +139892,9 @@ var opencode = agent({
   }
 });
 function configureOpenCode(ctx) {
-  const configDir = join11(ctx.tmpdir, ".config", "opencode");
+  const configDir = join12(ctx.tmpdir, ".config", "opencode");
   mkdirSync6(configDir, { recursive: true });
-  const configPath = join11(configDir, "opencode.json");
+  const configPath = join12(configDir, "opencode.json");
   const opencodeMcpServers = {
     [ghPullfrogMcpName]: { type: "remote", url: ctx.mcpServerUrl }
   };
@@ -139862,7 +139912,7 @@ function configureOpenCode(ctx) {
   };
   const configJson = JSON.stringify(config4, null, 2);
   try {
-    writeFileSync7(configPath, configJson, "utf-8");
+    writeFileSync8(configPath, configJson, "utf-8");
   } catch (error50) {
     log.error(
       `failed to write OpenCode config to ${configPath}: ${error50 instanceof Error ? error50.message : String(error50)}`
@@ -140573,9 +140623,9 @@ async function handleAgentResult(result) {
 import { execSync as execSync2 } from "node:child_process";
 import { mkdtempSync } from "node:fs";
 import { tmpdir as tmpdir2 } from "node:os";
-import { join as join12 } from "node:path";
+import { join as join13 } from "node:path";
 function createTempDirectory() {
-  const sharedTempDir = mkdtempSync(join12(tmpdir2(), "pullfrog-"));
+  const sharedTempDir = mkdtempSync(join13(tmpdir2(), "pullfrog-"));
   process.env.PULLFROG_TEMP_DIR = sharedTempDir;
   log.info(`\xBB created temp dir at ${sharedTempDir}`);
   return sharedTempDir;
diff --git a/mcp/commitInfo.ts b/mcp/commitInfo.ts
new file mode 100644
index 0000000..fd02577
--- /dev/null
+++ b/mcp/commitInfo.ts
@@ -0,0 +1,60 @@
+import { writeFileSync } from "node:fs";
+import { join } from "node:path";
+import { type } from "arktype";
+import { log } from "../utils/cli.ts";
+import { formatFilesWithLineNumbers } from "./checkout.ts";
+import type { ToolContext } from "./server.ts";
+import { execute, tool } from "./shared.ts";
+
+export const CommitInfo = type({
+  sha: type.string.describe("the commit SHA (full or abbreviated) to fetch"),
+});
+
+export function CommitInfoTool(ctx: ToolContext) {
+  return tool({
+    name: "get_commit_info",
+    description:
+      "Retrieve commit metadata and diff via GitHub API. Use this instead of git show for reviewing commits - " +
+      "it works with shallow clones and shows the actual changes in the commit. Returns diffPath pointing to formatted diff file.",
+    parameters: CommitInfo,
+    execute: execute(async ({ sha }) => {
+      const response = await ctx.octokit.rest.repos.getCommit({
+        owner: ctx.repo.owner,
+        repo: ctx.repo.name,
+        ref: sha,
+      });
+
+      const data = response.data;
+      const files = data.files ?? [];
+
+      // format diff with line numbers and write to file
+      const diffContent = formatFilesWithLineNumbers(files);
+      const tempDir = process.env.PULLFROG_TEMP_DIR;
+      if (!tempDir) {
+        throw new Error(
+          "PULLFROG_TEMP_DIR not set - get_commit_info must run in pullfrog action context"
+        );
+      }
+      const diffFile = join(tempDir, `commit-${sha.slice(0, 7)}.diff`);
+      writeFileSync(diffFile, diffContent);
+      log.debug(`wrote commit diff to ${diffFile} (${diffContent.length} bytes)`);
+
+      return {
+        sha: data.sha,
+        message: data.commit.message,
+        author: data.author?.login ?? null,
+        committer: data.committer?.login ?? null,
+        date: data.commit.author?.date ?? data.commit.committer?.date ?? "",
+        url: data.html_url,
+        parents: data.parents.map((p) => p.sha),
+        stats: {
+          additions: data.stats?.additions ?? 0,
+          deletions: data.stats?.deletions ?? 0,
+          total: data.stats?.total ?? 0,
+        },
+        fileCount: files.length,
+        diffFile,
+      };
+    }),
+  });
+}
diff --git a/mcp/server.ts b/mcp/server.ts
index 1356ac9..70e29a2 100644
--- a/mcp/server.ts
+++ b/mcp/server.ts
@@ -89,6 +89,7 @@ import { GetIssueEventsTool } from "./issueEvents.ts";
 import { IssueInfoTool } from "./issueInfo.ts";
 import { AddLabelsTool } from "./labels.ts";
 import { CreatePullRequestTool } from "./pr.ts";
+import { CommitInfoTool } from "./commitInfo.ts";
 import { PullRequestInfoTool } from "./prInfo.ts";
 import { CreatePullRequestReviewTool } from "./review.ts";
 import { GetReviewCommentsTool, ListPullRequestReviewsTool } from "./reviewComments.ts";
@@ -171,6 +172,7 @@ export async function startMcpHttpServer(
     CreatePullRequestTool(ctx),
     CreatePullRequestReviewTool(ctx),
     PullRequestInfoTool(ctx),
+    CommitInfoTool(ctx),
     CheckoutPrTool(ctx),
     GetReviewCommentsTool(ctx),
     ListPullRequestReviewsTool(ctx),