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# This file was automatically generated by gh-aw. DO NOT EDIT.
# To update this file, edit the corresponding .md file and run:
# gh aw compile
# For more information: https://github.com/githubnext/gh-aw/blob/main/.github/instructions/github-agentic-workflows.instructions.md
#
# Resolved workflow manifest:
# Imports:
# - shared/mcp/serena.md
#
# Job Dependency Graph:
# ```mermaid
# graph LR
# activation["activation"]
# agent["agent"]
# create_issue["create_issue"]
# detection["detection"]
# missing_tool["missing_tool"]
# pre_activation["pre_activation"]
# pre_activation --> activation
# activation --> agent
# agent --> create_issue
# detection --> create_issue
# agent --> detection
# agent --> missing_tool
# detection --> missing_tool
# ```
name: "Duplicate Code Detector"
"on":
schedule:
- cron: 0 11 * * *
workflow_dispatch: null
permissions: {}
concurrency:
group: "gh-aw-${{ github.workflow }}"
run-name: "Duplicate Code Detector"
jobs:
activation:
needs: pre_activation
if: needs.pre_activation.outputs.activated == 'true'
runs-on: ubuntu-latest
steps:
- name: Check workflow file timestamps
run: |
WORKFLOW_FILE="${GITHUB_WORKSPACE}/.github/workflows/$(basename "$GITHUB_WORKFLOW" .lock.yml).md"
LOCK_FILE="${GITHUB_WORKSPACE}/.github/workflows/$GITHUB_WORKFLOW"
if [ -f "$WORKFLOW_FILE" ] && [ -f "$LOCK_FILE" ]; then
if [ "$WORKFLOW_FILE" -nt "$LOCK_FILE" ]; then
echo "🔴🔴🔴 WARNING: Lock file '$LOCK_FILE' is outdated! The workflow file '$WORKFLOW_FILE' has been modified more recently. Run 'gh aw compile' to regenerate the lock file." >&2
echo "## ⚠️ Workflow Lock File Warning" >> $GITHUB_STEP_SUMMARY
echo "🔴🔴🔴 **WARNING**: Lock file \`$LOCK_FILE\` is outdated!" >> $GITHUB_STEP_SUMMARY
echo "The workflow file \`$WORKFLOW_FILE\` has been modified more recently." >> $GITHUB_STEP_SUMMARY
echo "Run \`gh aw compile\` to regenerate the lock file." >> $GITHUB_STEP_SUMMARY
echo "" >> $GITHUB_STEP_SUMMARY
fi
fi
agent:
needs: activation
runs-on: ubuntu-latest
permissions:
actions: read
contents: read
concurrency:
group: "gh-aw-codex-${{ github.workflow }}"
env:
GITHUB_AW_SAFE_OUTPUTS: /tmp/gh-aw/safe-outputs/outputs.jsonl
GITHUB_AW_SAFE_OUTPUTS_CONFIG: "{\"create_issue\":{\"max\":1},\"missing_tool\":{}}"
outputs:
output: ${{ steps.collect_output.outputs.output }}
output_types: ${{ steps.collect_output.outputs.output_types }}
steps:
- name: Checkout repository
uses: actions/checkout@v5
- name: Setup Go
uses: actions/setup-go@v5
with:
go-version-file: go.mod
cache: true
- name: Setup Python
uses: actions/setup-python@v5
with:
python-version: '3.12'
- name: Setup uv
uses: astral-sh/setup-uv@v5
- name: Verify uv
run: uv --version
- name: Install Go language service
run: go install golang.org/x/tools/gopls@latest
- name: Check gopls version
run: gopls version
- name: Create gh-aw temp directory
run: |
mkdir -p /tmp/gh-aw/agent
echo "Created /tmp/gh-aw/agent directory for agentic workflow temporary files"
- name: Configure Git credentials
run: |
git config --global user.email "github-actions[bot]@users.noreply.github.com"
git config --global user.name "${{ github.workflow }}"
echo "Git configured with standard GitHub Actions identity"
- name: Checkout PR branch
if: |
github.event.pull_request
uses: actions/github-script@v8
with:
script: |
async function main() {
const eventName = context.eventName;
const pullRequest = context.payload.pull_request;
if (!pullRequest) {
core.info("No pull request context available, skipping checkout");
return;
}
core.info(`Event: ${eventName}`);
core.info(`Pull Request #${pullRequest.number}`);
try {
if (eventName === "pull_request") {
const branchName = pullRequest.head.ref;
core.info(`Checking out PR branch: ${branchName}`);
await exec.exec("git", ["fetch", "origin", branchName]);
await exec.exec("git", ["checkout", branchName]);
core.info(`✅ Successfully checked out branch: ${branchName}`);
} else {
const prNumber = pullRequest.number;
core.info(`Checking out PR #${prNumber} using gh pr checkout`);
await exec.exec("gh", ["pr", "checkout", prNumber.toString()], {
env: { ...process.env, GH_TOKEN: process.env.GITHUB_TOKEN },
});
core.info(`✅ Successfully checked out PR #${prNumber}`);
}
} catch (error) {
core.setFailed(`Failed to checkout PR branch: ${error instanceof Error ? error.message : String(error)}`);
}
}
main().catch(error => {
core.setFailed(error instanceof Error ? error.message : String(error));
});
- name: Validate CODEX_API_KEY or OPENAI_API_KEY secret
run: |
if [ -z "$CODEX_API_KEY" ] && [ -z "$OPENAI_API_KEY" ]; then
echo "Error: Neither CODEX_API_KEY nor OPENAI_API_KEY secret is set"
echo "The Codex engine requires either CODEX_API_KEY or OPENAI_API_KEY secret to be configured."
echo "Please configure one of these secrets in your repository settings."
echo "Documentation: https://githubnext.github.io/gh-aw/reference/engines/#openai-codex"
exit 1
fi
if [ -n "$CODEX_API_KEY" ]; then
echo "CODEX_API_KEY secret is configured"
else
echo "OPENAI_API_KEY secret is configured (using as fallback for CODEX_API_KEY)"
fi
env:
CODEX_API_KEY: ${{ secrets.CODEX_API_KEY }}
OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version: '24'
- name: Install Codex
run: npm install -g @openai/codex@0.47.0
- name: Downloading container images
run: |
set -e
docker pull ghcr.io/github/github-mcp-server:v0.19.0
- name: Setup Safe Outputs Collector MCP
run: |
mkdir -p /tmp/gh-aw/safe-outputs
cat > /tmp/gh-aw/safe-outputs/config.json << 'EOF'
{"create_issue":{"max":1},"missing_tool":{}}
EOF
cat > /tmp/gh-aw/safe-outputs/mcp-server.cjs << 'EOF'
const fs = require("fs");
const path = require("path");
const crypto = require("crypto");
const { execSync } = require("child_process");
const encoder = new TextEncoder();
const SERVER_INFO = { name: "safe-outputs-mcp-server", version: "1.0.0" };
const debug = msg => process.stderr.write(`[${SERVER_INFO.name}] ${msg}\n`);
function normalizeBranchName(branchName) {
if (!branchName || typeof branchName !== "string" || branchName.trim() === "") {
return branchName;
}
let normalized = branchName.replace(/[^a-zA-Z0-9\-_/.]+/g, "-");
normalized = normalized.replace(/-+/g, "-");
normalized = normalized.replace(/^-+|-+$/g, "");
if (normalized.length > 128) {
normalized = normalized.substring(0, 128);
}
normalized = normalized.replace(/-+$/, "");
normalized = normalized.toLowerCase();
return normalized;
}
const configEnv = process.env.GITHUB_AW_SAFE_OUTPUTS_CONFIG;
let safeOutputsConfigRaw;
if (!configEnv) {
const defaultConfigPath = "/tmp/gh-aw/safe-outputs/config.json";
debug(`GITHUB_AW_SAFE_OUTPUTS_CONFIG not set, attempting to read from default path: ${defaultConfigPath}`);
try {
if (fs.existsSync(defaultConfigPath)) {
debug(`Reading config from file: ${defaultConfigPath}`);
const configFileContent = fs.readFileSync(defaultConfigPath, "utf8");
debug(`Config file content length: ${configFileContent.length} characters`);
debug(`Config file read successfully, attempting to parse JSON`);
safeOutputsConfigRaw = JSON.parse(configFileContent);
debug(`Successfully parsed config from file with ${Object.keys(safeOutputsConfigRaw).length} configuration keys`);
} else {
debug(`Config file does not exist at: ${defaultConfigPath}`);
debug(`Using minimal default configuration`);
safeOutputsConfigRaw = {};
}
} catch (error) {
debug(`Error reading config file: ${error instanceof Error ? error.message : String(error)}`);
debug(`Falling back to empty configuration`);
safeOutputsConfigRaw = {};
}
} else {
debug(`Using GITHUB_AW_SAFE_OUTPUTS_CONFIG from environment variable`);
debug(`Config environment variable length: ${configEnv.length} characters`);
try {
safeOutputsConfigRaw = JSON.parse(configEnv);
debug(`Successfully parsed config from environment: ${JSON.stringify(safeOutputsConfigRaw)}`);
} catch (error) {
debug(`Error parsing config from environment: ${error instanceof Error ? error.message : String(error)}`);
throw new Error(`Failed to parse GITHUB_AW_SAFE_OUTPUTS_CONFIG: ${error instanceof Error ? error.message : String(error)}`);
}
}
const safeOutputsConfig = Object.fromEntries(Object.entries(safeOutputsConfigRaw).map(([k, v]) => [k.replace(/-/g, "_"), v]));
debug(`Final processed config: ${JSON.stringify(safeOutputsConfig)}`);
const outputFile = process.env.GITHUB_AW_SAFE_OUTPUTS || "/tmp/gh-aw/safe-outputs/outputs.jsonl";
if (!process.env.GITHUB_AW_SAFE_OUTPUTS) {
debug(`GITHUB_AW_SAFE_OUTPUTS not set, using default: ${outputFile}`);
const outputDir = path.dirname(outputFile);
if (!fs.existsSync(outputDir)) {
debug(`Creating output directory: ${outputDir}`);
fs.mkdirSync(outputDir, { recursive: true });
}
}
function writeMessage(obj) {
const json = JSON.stringify(obj);
debug(`send: ${json}`);
const message = json + "\n";
const bytes = encoder.encode(message);
fs.writeSync(1, bytes);
}
class ReadBuffer {
append(chunk) {
this._buffer = this._buffer ? Buffer.concat([this._buffer, chunk]) : chunk;
}
readMessage() {
if (!this._buffer) {
return null;
}
const index = this._buffer.indexOf("\n");
if (index === -1) {
return null;
}
const line = this._buffer.toString("utf8", 0, index).replace(/\r$/, "");
this._buffer = this._buffer.subarray(index + 1);
if (line.trim() === "") {
return this.readMessage();
}
try {
return JSON.parse(line);
} catch (error) {
throw new Error(`Parse error: ${error instanceof Error ? error.message : String(error)}`);
}
}
}
const readBuffer = new ReadBuffer();
function onData(chunk) {
readBuffer.append(chunk);
processReadBuffer();
}
function processReadBuffer() {
while (true) {
try {
const message = readBuffer.readMessage();
if (!message) {
break;
}
debug(`recv: ${JSON.stringify(message)}`);
handleMessage(message);
} catch (error) {
debug(`Parse error: ${error instanceof Error ? error.message : String(error)}`);
}
}
}
function replyResult(id, result) {
if (id === undefined || id === null) return;
const res = { jsonrpc: "2.0", id, result };
writeMessage(res);
}
function replyError(id, code, message) {
if (id === undefined || id === null) {
debug(`Error for notification: ${message}`);
return;
}
const error = { code, message };
const res = {
jsonrpc: "2.0",
id,
error,
};
writeMessage(res);
}
function appendSafeOutput(entry) {
if (!outputFile) throw new Error("No output file configured");
entry.type = entry.type.replace(/-/g, "_");
const jsonLine = JSON.stringify(entry) + "\n";
try {
fs.appendFileSync(outputFile, jsonLine);
} catch (error) {
throw new Error(`Failed to write to output file: ${error instanceof Error ? error.message : String(error)}`);
}
}
const defaultHandler = type => args => {
const entry = { ...(args || {}), type };
appendSafeOutput(entry);
return {
content: [
{
type: "text",
text: JSON.stringify({ result: "success" }),
},
],
};
};
const uploadAssetHandler = args => {
const branchName = process.env.GITHUB_AW_ASSETS_BRANCH;
if (!branchName) throw new Error("GITHUB_AW_ASSETS_BRANCH not set");
const normalizedBranchName = normalizeBranchName(branchName);
const { path: filePath } = args;
const absolutePath = path.resolve(filePath);
const workspaceDir = process.env.GITHUB_WORKSPACE || process.cwd();
const tmpDir = "/tmp";
const isInWorkspace = absolutePath.startsWith(path.resolve(workspaceDir));
const isInTmp = absolutePath.startsWith(tmpDir);
if (!isInWorkspace && !isInTmp) {
throw new Error(
`File path must be within workspace directory (${workspaceDir}) or /tmp directory. ` +
`Provided path: ${filePath} (resolved to: ${absolutePath})`
);
}
if (!fs.existsSync(filePath)) {
throw new Error(`File not found: ${filePath}`);
}
const stats = fs.statSync(filePath);
const sizeBytes = stats.size;
const sizeKB = Math.ceil(sizeBytes / 1024);
const maxSizeKB = process.env.GITHUB_AW_ASSETS_MAX_SIZE_KB ? parseInt(process.env.GITHUB_AW_ASSETS_MAX_SIZE_KB, 10) : 10240;
if (sizeKB > maxSizeKB) {
throw new Error(`File size ${sizeKB} KB exceeds maximum allowed size ${maxSizeKB} KB`);
}
const ext = path.extname(filePath).toLowerCase();
const allowedExts = process.env.GITHUB_AW_ASSETS_ALLOWED_EXTS
? process.env.GITHUB_AW_ASSETS_ALLOWED_EXTS.split(",").map(ext => ext.trim())
: [
".png",
".jpg",
".jpeg",
];
if (!allowedExts.includes(ext)) {
throw new Error(`File extension '${ext}' is not allowed. Allowed extensions: ${allowedExts.join(", ")}`);
}
const assetsDir = "/tmp/gh-aw/safe-outputs/assets";
if (!fs.existsSync(assetsDir)) {
fs.mkdirSync(assetsDir, { recursive: true });
}
const fileContent = fs.readFileSync(filePath);
const sha = crypto.createHash("sha256").update(fileContent).digest("hex");
const fileName = path.basename(filePath);
const fileExt = path.extname(fileName).toLowerCase();
const targetPath = path.join(assetsDir, fileName);
fs.copyFileSync(filePath, targetPath);
const targetFileName = (sha + fileExt).toLowerCase();
const githubServer = process.env.GITHUB_SERVER_URL || "https://github.com";
const repo = process.env.GITHUB_REPOSITORY || "owner/repo";
const url = `${githubServer.replace("github.com", "raw.githubusercontent.com")}/${repo}/${normalizedBranchName}/${targetFileName}`;
const entry = {
type: "upload_asset",
path: filePath,
fileName: fileName,
sha: sha,
size: sizeBytes,
url: url,
targetFileName: targetFileName,
};
appendSafeOutput(entry);
return {
content: [
{
type: "text",
text: JSON.stringify({ result: url }),
},
],
};
};
function getCurrentBranch() {
try {
const branch = execSync("git rev-parse --abbrev-ref HEAD", { encoding: "utf8" }).trim();
debug(`Resolved current branch: ${branch}`);
return branch;
} catch (error) {
throw new Error(`Failed to get current branch: ${error instanceof Error ? error.message : String(error)}`);
}
}
const createPullRequestHandler = args => {
const entry = { ...args, type: "create_pull_request" };
if (!entry.branch || entry.branch.trim() === "") {
entry.branch = getCurrentBranch();
debug(`Using current branch for create_pull_request: ${entry.branch}`);
}
appendSafeOutput(entry);
return {
content: [
{
type: "text",
text: JSON.stringify({ result: "success" }),
},
],
};
};
const pushToPullRequestBranchHandler = args => {
const entry = { ...args, type: "push_to_pull_request_branch" };
if (!entry.branch || entry.branch.trim() === "") {
entry.branch = getCurrentBranch();
debug(`Using current branch for push_to_pull_request_branch: ${entry.branch}`);
}
appendSafeOutput(entry);
return {
content: [
{
type: "text",
text: JSON.stringify({ result: "success" }),
},
],
};
};
const normTool = toolName => (toolName ? toolName.replace(/-/g, "_").toLowerCase() : undefined);
const ALL_TOOLS = [
{
name: "create_issue",
description: "Create a new GitHub issue",
inputSchema: {
type: "object",
required: ["title", "body"],
properties: {
title: { type: "string", description: "Issue title" },
body: { type: "string", description: "Issue body/description" },
labels: {
type: "array",
items: { type: "string" },
description: "Issue labels",
},
},
additionalProperties: false,
},
},
{
name: "create_discussion",
description: "Create a new GitHub discussion",
inputSchema: {
type: "object",
required: ["title", "body"],
properties: {
title: { type: "string", description: "Discussion title" },
body: { type: "string", description: "Discussion body/content" },
category: { type: "string", description: "Discussion category" },
},
additionalProperties: false,
},
},
{
name: "add_comment",
description: "Add a comment to a GitHub issue, pull request, or discussion",
inputSchema: {
type: "object",
required: ["body", "item_number"],
properties: {
body: { type: "string", description: "Comment body/content" },
item_number: {
type: "number",
description: "Issue, pull request or discussion number",
},
},
additionalProperties: false,
},
},
{
name: "create_pull_request",
description: "Create a new GitHub pull request",
inputSchema: {
type: "object",
required: ["title", "body"],
properties: {
title: { type: "string", description: "Pull request title" },
body: {
type: "string",
description: "Pull request body/description",
},
branch: {
type: "string",
description: "Optional branch name. If not provided, the current branch will be used.",
},
labels: {
type: "array",
items: { type: "string" },
description: "Optional labels to add to the PR",
},
},
additionalProperties: false,
},
handler: createPullRequestHandler,
},
{
name: "create_pull_request_review_comment",
description: "Create a review comment on a GitHub pull request",
inputSchema: {
type: "object",
required: ["path", "line", "body"],
properties: {
path: {
type: "string",
description: "File path for the review comment",
},
line: {
type: ["number", "string"],
description: "Line number for the comment",
},
body: { type: "string", description: "Comment body content" },
start_line: {
type: ["number", "string"],
description: "Optional start line for multi-line comments",
},
side: {
type: "string",
enum: ["LEFT", "RIGHT"],
description: "Optional side of the diff: LEFT or RIGHT",
},
},
additionalProperties: false,
},
},
{
name: "create_code_scanning_alert",
description: "Create a code scanning alert. severity MUST be one of 'error', 'warning', 'info', 'note'.",
inputSchema: {
type: "object",
required: ["file", "line", "severity", "message"],
properties: {
file: {
type: "string",
description: "File path where the issue was found",
},
line: {
type: ["number", "string"],
description: "Line number where the issue was found",
},
severity: {
type: "string",
enum: ["error", "warning", "info", "note"],
description:
' Security severity levels follow the industry-standard Common Vulnerability Scoring System (CVSS) that is also used for advisories in the GitHub Advisory Database and must be one of "error", "warning", "info", "note".',
},
message: {
type: "string",
description: "Alert message describing the issue",
},
column: {
type: ["number", "string"],
description: "Optional column number",
},
ruleIdSuffix: {
type: "string",
description: "Optional rule ID suffix for uniqueness",
},
},
additionalProperties: false,
},
},
{
name: "add_labels",
description: "Add labels to a GitHub issue or pull request",
inputSchema: {
type: "object",
required: ["labels"],
properties: {
labels: {
type: "array",
items: { type: "string" },
description: "Labels to add",
},
item_number: {
type: "number",
description: "Issue or PR number (optional for current context)",
},
},
additionalProperties: false,
},
},
{
name: "update_issue",
description: "Update a GitHub issue",
inputSchema: {
type: "object",
properties: {
status: {
type: "string",
enum: ["open", "closed"],
description: "Optional new issue status",
},
title: { type: "string", description: "Optional new issue title" },
body: { type: "string", description: "Optional new issue body" },
issue_number: {
type: ["number", "string"],
description: "Optional issue number for target '*'",
},
},
additionalProperties: false,
},
},
{
name: "push_to_pull_request_branch",
description: "Push changes to a pull request branch",
inputSchema: {
type: "object",
required: ["message"],
properties: {
branch: {
type: "string",
description: "Optional branch name. If not provided, the current branch will be used.",
},
message: { type: "string", description: "Commit message" },
pull_request_number: {
type: ["number", "string"],
description: "Optional pull request number for target '*'",
},
},
additionalProperties: false,
},
handler: pushToPullRequestBranchHandler,
},
{
name: "upload_asset",
description: "Publish a file as a URL-addressable asset to an orphaned git branch",
inputSchema: {
type: "object",
required: ["path"],
properties: {
path: {
type: "string",
description:
"Path to the file to publish as an asset. Must be a file under the current workspace or /tmp directory. By default, images (.png, .jpg, .jpeg) are allowed, but can be configured via workflow settings.",
},
},
additionalProperties: false,
},
handler: uploadAssetHandler,
},
{
name: "missing_tool",
description: "Report a missing tool or functionality needed to complete tasks",
inputSchema: {
type: "object",
required: ["tool", "reason"],
properties: {
tool: { type: "string", description: "Name of the missing tool (max 128 characters)" },
reason: { type: "string", description: "Why this tool is needed (max 256 characters)" },
alternatives: {
type: "string",
description: "Possible alternatives or workarounds (max 256 characters)",
},
},
additionalProperties: false,
},
},
];
debug(`v${SERVER_INFO.version} ready on stdio`);
debug(` output file: ${outputFile}`);
debug(` config: ${JSON.stringify(safeOutputsConfig)}`);
const TOOLS = {};
ALL_TOOLS.forEach(tool => {
if (Object.keys(safeOutputsConfig).find(config => normTool(config) === tool.name)) {
TOOLS[tool.name] = tool;
}
});
Object.keys(safeOutputsConfig).forEach(configKey => {
const normalizedKey = normTool(configKey);
if (TOOLS[normalizedKey]) {
return;
}
if (!ALL_TOOLS.find(t => t.name === normalizedKey)) {
const jobConfig = safeOutputsConfig[configKey];
const dynamicTool = {
name: normalizedKey,
description: jobConfig && jobConfig.description ? jobConfig.description : `Custom safe-job: ${configKey}`,
inputSchema: {
type: "object",
properties: {},
additionalProperties: true,
},
handler: args => {
const entry = {
type: normalizedKey,
...args,
};
const entryJSON = JSON.stringify(entry);
fs.appendFileSync(outputFile, entryJSON + "\n");
const outputText =
jobConfig && jobConfig.output
? jobConfig.output
: `Safe-job '${configKey}' executed successfully with arguments: ${JSON.stringify(args)}`;
return {
content: [
{
type: "text",
text: JSON.stringify({ result: outputText }),
},
],
};
},
};
if (jobConfig && jobConfig.inputs) {
dynamicTool.inputSchema.properties = {};
dynamicTool.inputSchema.required = [];
Object.keys(jobConfig.inputs).forEach(inputName => {
const inputDef = jobConfig.inputs[inputName];
const propSchema = {
type: inputDef.type || "string",
description: inputDef.description || `Input parameter: ${inputName}`,
};
if (inputDef.options && Array.isArray(inputDef.options)) {
propSchema.enum = inputDef.options;
}
dynamicTool.inputSchema.properties[inputName] = propSchema;
if (inputDef.required) {
dynamicTool.inputSchema.required.push(inputName);
}
});
}
TOOLS[normalizedKey] = dynamicTool;
}
});
debug(` tools: ${Object.keys(TOOLS).join(", ")}`);
if (!Object.keys(TOOLS).length) throw new Error("No tools enabled in configuration");
function handleMessage(req) {
if (!req || typeof req !== "object") {
debug(`Invalid message: not an object`);
return;
}
if (req.jsonrpc !== "2.0") {
debug(`Invalid message: missing or invalid jsonrpc field`);
return;
}
const { id, method, params } = req;
if (!method || typeof method !== "string") {
replyError(id, -32600, "Invalid Request: method must be a string");
return;
}
try {
if (method === "initialize") {
const clientInfo = params?.clientInfo ?? {};
console.error(`client info:`, clientInfo);
const protocolVersion = params?.protocolVersion ?? undefined;
const result = {
serverInfo: SERVER_INFO,
...(protocolVersion ? { protocolVersion } : {}),
capabilities: {
tools: {},
},
};
replyResult(id, result);
} else if (method === "tools/list") {
const list = [];
Object.values(TOOLS).forEach(tool => {
const toolDef = {
name: tool.name,
description: tool.description,
inputSchema: tool.inputSchema,
};
if (tool.name === "add_labels" && safeOutputsConfig.add_labels?.allowed) {
const allowedLabels = safeOutputsConfig.add_labels.allowed;
if (Array.isArray(allowedLabels) && allowedLabels.length > 0) {
toolDef.description = `Add labels to a GitHub issue or pull request. Allowed labels: ${allowedLabels.join(", ")}`;
}
}
if (tool.name === "update_issue" && safeOutputsConfig.update_issue) {
const config = safeOutputsConfig.update_issue;
const allowedOps = [];
if (config.status !== false) allowedOps.push("status");
if (config.title !== false) allowedOps.push("title");
if (config.body !== false) allowedOps.push("body");
if (allowedOps.length > 0 && allowedOps.length < 3) {
toolDef.description = `Update a GitHub issue. Allowed updates: ${allowedOps.join(", ")}`;
}
}
if (tool.name === "upload_asset") {
const maxSizeKB = process.env.GITHUB_AW_ASSETS_MAX_SIZE_KB ? parseInt(process.env.GITHUB_AW_ASSETS_MAX_SIZE_KB, 10) : 10240;
const allowedExts = process.env.GITHUB_AW_ASSETS_ALLOWED_EXTS
? process.env.GITHUB_AW_ASSETS_ALLOWED_EXTS.split(",").map(ext => ext.trim())
: [".png", ".jpg", ".jpeg"];
toolDef.description = `Publish a file as a URL-addressable asset to an orphaned git branch. Maximum file size: ${maxSizeKB} KB. Allowed extensions: ${allowedExts.join(", ")}`;
}
list.push(toolDef);
});
replyResult(id, { tools: list });
} else if (method === "tools/call") {
const name = params?.name;
const args = params?.arguments ?? {};
if (!name || typeof name !== "string") {
replyError(id, -32602, "Invalid params: 'name' must be a string");
return;
}
const tool = TOOLS[normTool(name)];
if (!tool) {
replyError(id, -32601, `Tool not found: ${name} (${normTool(name)})`);
return;
}
const handler = tool.handler || defaultHandler(tool.name);
const requiredFields = tool.inputSchema && Array.isArray(tool.inputSchema.required) ? tool.inputSchema.required : [];
if (requiredFields.length) {
const missing = requiredFields.filter(f => {
const value = args[f];
return value === undefined || value === null || (typeof value === "string" && value.trim() === "");
});
if (missing.length) {
replyError(id, -32602, `Invalid arguments: missing or empty ${missing.map(m => `'${m}'`).join(", ")}`);
return;
}
}
const result = handler(args);
const content = result && result.content ? result.content : [];
replyResult(id, { content, isError: false });
} else if (/^notifications\//.test(method)) {
debug(`ignore ${method}`);
} else {
replyError(id, -32601, `Method not found: ${method}`);
}
} catch (e) {
replyError(id, -32603, e instanceof Error ? e.message : String(e));
}
}
process.stdin.on("data", onData);
process.stdin.on("error", err => debug(`stdin error: ${err}`));
process.stdin.resume();
debug(`listening...`);
EOF
chmod +x /tmp/gh-aw/safe-outputs/mcp-server.cjs
- name: Setup MCPs
run: |
mkdir -p /tmp/gh-aw/mcp-config
cat > /tmp/gh-aw/mcp-config/config.toml << EOF
[history]
persistence = "none"
[mcp_servers.github]
user_agent = "duplicate-code-detector"
startup_timeout_sec = 120
tool_timeout_sec = 60
command = "docker"
args = [
"run",
"-i",
"--rm",
"-e",
"GITHUB_PERSONAL_ACCESS_TOKEN",
"-e",
"GITHUB_TOOLSETS=all",
"ghcr.io/github/github-mcp-server:v0.19.0"
]
[mcp_servers.github.env]
GITHUB_PERSONAL_ACCESS_TOKEN = "${{ secrets.GH_AW_GITHUB_TOKEN || secrets.GITHUB_TOKEN }}"
[mcp_servers.safe_outputs]
command = "node"
args = [
"/tmp/gh-aw/safe-outputs/mcp-server.cjs",
]
env = { "GITHUB_AW_SAFE_OUTPUTS" = "${{ env.GITHUB_AW_SAFE_OUTPUTS }}", "GITHUB_AW_SAFE_OUTPUTS_CONFIG" = ${{ toJSON(env.GITHUB_AW_SAFE_OUTPUTS_CONFIG) }}, "GITHUB_AW_ASSETS_BRANCH" = "${{ env.GITHUB_AW_ASSETS_BRANCH }}", "GITHUB_AW_ASSETS_MAX_SIZE_KB" = "${{ env.GITHUB_AW_ASSETS_MAX_SIZE_KB }}", "GITHUB_AW_ASSETS_ALLOWED_EXTS" = "${{ env.GITHUB_AW_ASSETS_ALLOWED_EXTS }}" }
[mcp_servers.serena]
command = "uvx"
args = [
"--from",
"git+https://github.com/oraios/serena",
"serena",
"start-mcp-server",
"--context",
"codex",
"--project",
"${{ github.workspace }}",
]
EOF
- name: Create prompt
env:
GITHUB_AW_PROMPT: /tmp/gh-aw/aw-prompts/prompt.txt
GITHUB_AW_SAFE_OUTPUTS: ${{ env.GITHUB_AW_SAFE_OUTPUTS }}
run: |
mkdir -p $(dirname "$GITHUB_AW_PROMPT")
cat > $GITHUB_AW_PROMPT << 'EOF'
## Serena configuration
The active workspaces is ${{ github.workspace }}. You should configure the Serena memory at the cache-memory folder (/tmp/gh-aw/cache-memory/serena).
# Duplicate Code Detection
Analyze code to identify duplicated patterns using Serena's semantic code analysis capabilities. Report significant findings that require refactoring.
## Task
Detect and report code duplication by:
1. **Analyzing Recent Commits**: Review changes in the latest commits
2. **Detecting Duplicated Code**: Identify similar or duplicated code patterns using semantic analysis
3. **Reporting Findings**: Create a detailed issue if significant duplication is detected (threshold: >10 lines or 3+ similar patterns)
## Context
- **Repository**: ${{ github.repository }}
- **Commit ID**: ${{ github.event.head_commit.id }}
- **Triggered by**: @${{ github.actor }}
## Analysis Workflow
### 1. Project Activation
Activate the project in Serena:
- Use `activate_project` tool with workspace path `/workspace` (mounted repository directory)
- This sets up the semantic code analysis environment
### 2. Changed Files Analysis
Identify and analyze modified files:
- Determine files changed in the recent commits
- **ONLY analyze .go files** - exclude all other file types
- **Exclude all JavaScript files** from analysis (files matching patterns: `*.js`, `*.cjs`, `*.mjs`, `*.jsx`, `*.ts`, `*.tsx`)
- **Exclude test files** from analysis (files matching patterns: `*_test.go`, `*.test.js`, `*.spec.js`, `*.test.ts`, `*.spec.ts`, `*_test.py`, `test_*.py`, or located in directories named `test`, `tests`, `__tests__`, or `spec`)
- **Exclude workflow files** from analysis (files under `.github/workflows/*`)
- Use `get_symbols_overview` to understand file structure
- Use `read_file` to examine modified file contents
### 3. Duplicate Detection
Apply semantic code analysis to find duplicates:
**Symbol-Level Analysis**:
- For significant functions/methods in changed files, use `find_symbol` to search for similarly named symbols
- Use `find_referencing_symbols` to understand usage patterns
- Identify functions with similar names in different files (e.g., `processData` across modules)
**Pattern Search**:
- Use `search_for_pattern` to find similar code patterns
- Search for duplication indicators:
- Similar function signatures
- Repeated logic blocks
- Similar variable naming patterns
- Near-identical code blocks
**Structural Analysis**:
- Use `list_dir` and `find_file` to identify files with similar names or purposes
- Compare symbol overviews across files for structural similarities
### 4. Duplication Evaluation
Assess findings to identify true code duplication:
**Duplication Types**:
- **Exact Duplication**: Identical code blocks in multiple locations
- **Structural Duplication**: Same logic with minor variations (different variable names, etc.)
- **Functional Duplication**: Different implementations of the same functionality
- **Copy-Paste Programming**: Similar code blocks that could be extracted into shared utilities
**Assessment Criteria**:
- **Severity**: Amount of duplicated code (lines of code, number of occurrences)
- **Impact**: Where duplication occurs (critical paths, frequently called code)
- **Maintainability**: How duplication affects code maintainability
- **Refactoring Opportunity**: Whether duplication can be easily refactored
### 5. Issue Reporting
Create an issue if significant duplication is found (threshold: >10 lines of duplicated code OR 3+ instances of similar patterns):
**Issue Contents**:
- **Executive Summary**: Brief description of duplication found
- **Duplication Details**: Specific locations and code blocks
- **Severity Assessment**: Impact and maintainability concerns
- **Refactoring Recommendations**: Suggested approaches to eliminate duplication
- **Code Examples**: Concrete examples with file paths and line numbers
## Detection Scope