Build82 MCP Server

build82

🌐 Language: English · Português

An MCP (Model Context Protocol) server that gives AI assistants structural understanding of a Moodle installation and its plugins, so they can answer questions about the codebase and build plugins that follow its real conventions. Distributed as a single static binary.

Table of Contents

• Overview
• Prerequisites & Quick Installation
• Client Setup
• Update & Maintenance
• Documentation
• AI Usage in This Project
• License

Overview

Point build82 at a Moodle installation and it scans the codebase (version.php, db/*.php, XMLDB schemas, PHPDoc, hooks, tasks, capabilities, web services...) and generates a set of Markdown context files describing the installation and any plugin you're developing. An AI assistant connected to it can then answer questions about the codebase, scaffold new plugins consistently with existing conventions, and keep the docs in sync as you work.

Main features:

• 13 global indexes of the installation — API index, DB tables, events, tasks, capabilities, classes, web services, the plugin index and more.
• 12 per-plugin context files — architecture, dependencies, runtime flow, settings, and an AI-ready summary.
• 15 MCP tools, 4 MCP prompts and MCP resources — generate context, search the API and plugins, explain a plugin, plan a migration to a newer Moodle, diagnose the environment (doctor), check the Moodle coding style (with phpcs), package a plugin for release, create a new plugin skeleton, and bump a plugin's version with its upgrade step.
• File watcher that regenerates a dev plugin's context whenever its sources change.
• Two PHP extraction backends — fast regex (default) or pure-Go tree-sitter.
• Clean output — everything is written under .build82/ (at the Moodle root and at each plugin's root), never loose in the Moodle or plugin root.
• Native client registration for 8 MCP clients, and a checksum-verified self-update with rollback.

Prerequisites & Quick Installation

Prerequisites:

• A local Moodle installation (build82 reads its source tree).
• An MCP client — see Client Setup.
• Optional: universal-ctags on PATH, to also generate a .build82/tags file for editor navigation.
• Optional: phpcs with the Moodle coding standard (composer global require moodlehq/moodle-cs), for the check_coding_style tool.
• Only to build from source: Go 1.26+.

Download a release binary (no Go toolchain required). Every release ships a checksums.txt — verify it before trusting a downloaded binary. From v1.1.0 checksums.txt is also signed with Sigstore and every binary carries a GitHub build provenance attestation (how to verify). Full step-by-step guide with checksum verification and troubleshooting: Installation Guide.

# amd64
curl -LO https://github.com/oito2/mcp-build82/releases/latest/download/build82_linux_amd64
curl -LO https://github.com/oito2/mcp-build82/releases/latest/download/checksums.txt
sha256sum -c checksums.txt --ignore-missing \
  && chmod +x build82_linux_amd64 \
  && sudo mv build82_linux_amd64 /usr/local/bin/build82

# arm64
curl -LO https://github.com/oito2/mcp-build82/releases/latest/download/build82_linux_arm64
curl -LO https://github.com/oito2/mcp-build82/releases/latest/download/checksums.txt
sha256sum -c checksums.txt --ignore-missing \
  && chmod +x build82_linux_arm64 \
  && sudo mv build82_linux_arm64 /usr/local/bin/build82

build82 --version

Check your chip with uname -m (arm64 = Apple Silicon, x86_64 = Intel):

# Apple Silicon (M1/M2/M3/M4)
curl -LO https://github.com/oito2/mcp-build82/releases/latest/download/build82_darwin_arm64
curl -LO https://github.com/oito2/mcp-build82/releases/latest/download/checksums.txt
shasum -a 256 -c checksums.txt --ignore-missing \
  && chmod +x build82_darwin_arm64 \
  && sudo mv build82_darwin_arm64 /usr/local/bin/build82

# Intel
curl -LO https://github.com/oito2/mcp-build82/releases/latest/download/build82_darwin_amd64
curl -LO https://github.com/oito2/mcp-build82/releases/latest/download/checksums.txt
shasum -a 256 -c checksums.txt --ignore-missing \
  && chmod +x build82_darwin_amd64 \
  && sudo mv build82_darwin_amd64 /usr/local/bin/build82

The binary isn't notarized by Apple, so Gatekeeper will refuse to run it the first time — clear the quarantine flag: xattr -d com.apple.quarantine /usr/local/bin/build82.

On Windows on Arm, use build82_windows_arm64.exe in every command below.

Invoke-WebRequest -Uri "https://github.com/oito2/mcp-build82/releases/latest/download/build82_windows_amd64.exe" -OutFile "build82_windows_amd64.exe"
Invoke-WebRequest -Uri "https://github.com/oito2/mcp-build82/releases/latest/download/checksums.txt" -OutFile "checksums.txt"
Get-FileHash .\build82_windows_amd64.exe -Algorithm SHA256

Compare the printed Hash with the build82_windows_amd64.exe line in checksums.txt; continue only if they match:

Unblock-File .\build82_windows_amd64.exe
New-Item -ItemType Directory -Force -Path "$env:LOCALAPPDATA\build82"
Move-Item -Force .\build82_windows_amd64.exe "$env:LOCALAPPDATA\build82\build82.exe"
[Environment]::SetEnvironmentVariable("Path", "$env:Path;$env:LOCALAPPDATA\build82", "User")

Restart your terminal and run build82 --version to confirm it's on your PATH. The binary isn't code-signed; Unblock-File above keeps SmartScreen from blocking the first run ("Windows protected your PC") — if it still appears, click More info → Run anyway.

Or build from source (requires Go 1.26+):

go install github.com/oito2/mcp-build82/cmd/build82@latest

Client Setup

Register build82 as an MCP server in your AI tool:

build82 install [target]

It detects which supported tools are installed and prompts for the Moodle path. Run it without a target to configure every tool found, or pass one explicitly: claude (Claude Code), claude-desktop, antigravity, codex, opencode, cursor, zed, cline. Close the client first: install edits a configuration file the client also writes.

For example, with Claude Code you can also register it manually:

claude mcp add --scope user build82 -e BUILD82_MOODLE_PATH=/path/to/moodle -- /usr/local/bin/build82

Claude Desktop can also install build82 as a desktop extension: every release ships a build82.mcpb bundle with the binaries included — see Claude Desktop. build82 is also listed in the official MCP Registry as io.github.oito2/mcp-build82.

Per-client guides, including manual configuration: MCP Clients. To remove it: build82 uninstall [target] — see Uninstallation.

Update & Maintenance

build82 self-update --check    # report whether a newer release exists (exit 10 if so), without installing it
build82 self-update            # download, verify, and install the latest release
build82 self-update --require-signature # refuse to update unless cosign can verify the release signature
build82 self-update --rollback # restore the previous binary if the new version turns out to be broken

Downloads come only from this repository's release on GitHub. When cosign v3 or later is on PATH, the release's signature is verified first; without it, a warning is printed and only the checksum is checked. Every download is checksum-verified against the release's checksums.txt and smoke-tested before the running binary is replaced; the previous binary is kept as <path>.bak, and --rollback swaps the two (so running it again undoes it). If no backup exists, or the backup does not run, it fails with a clear error and nothing is changed. Details: CLI reference.

Documentation

The full documentation site lives in docs/en/index.md (also in Portuguese). Main entry points:

• Quickstart — first run in a few minutes
• Architecture — how build82 works, data flow and design decisions
• Tools, Resources and Prompts reference — every MCP capability in detail
• CLI and Configuration reference — every flag, environment variable and config key
• Example Prompts — what to ask your AI agent
• Guides and Troubleshooting

Contributing: see CONTRIBUTING.md for the development workflow and release process, and the Code of Conduct.

AI Usage in This Project

This project was developed with the assistance of generative AI tools:

• Scope: Generation of boilerplate, unit tests and refactoring of helper functions.

• Oversight: All generated code was manually reviewed, tested and validated before integration.

License

GPL-3.0 — see LICENSE.