Duy /zuey/ bc3bc25c98 fix(mcp): eliminate spurious grant-revoked errors (tool filter + session reset + system-user bypass) (#87)
* feat(mcp): filter tools at registration + detect FastMCP session reset with force-reconnect

Two foundational MCP reliability improvements:

(1) Tool allow/deny filtering at BridgeTool registration: Previously the runtime grant-check at execute time surfaced "grant revoked" errors when the LLM called a tool it wasn't allowed to call. Filter upfront in both the per-agent registration path (manager_connect.go) and per-user registration path (loop_mcp_user.go). Adds tool_filter.go with IsToolAllowed + tests. This eliminates the "registered then runtime-denied" loop.

(2) FastMCP session reset detection + force-reconnect: FastMCP/Python mcp servers reject tools/call as "invalid during session initialization" when the upstream session lifecycle resets but our pool still holds the old Mcp-Session-Id. Detector matches three known phrasings (FastMCP, mcp-go, mcp-go transport ErrSessionTerminated) in session_reset.go. On detection, BridgeTool.Execute requests a force-reconnect via atomic CAS dedup so N concurrent failing calls collapse to one reconnect. Health loops skip ping while pending so a server answering ping in "initializing" state cannot clobber connected=true before the fresh Initialize completes. Includes 30s timeout, structured slog telemetry, concurrent CAS dedup test.

Files: tool_filter.go + tool_filter_test.go (new), session_reset.go + session_reset_test.go (new), manager_connect.go (connectServer/connectViaPool signatures + registerBridgeTools/registerPoolBridgeTools filter logic + reconnPending skip), manager.go (connectAndFilter + connectServer call signature changes), loop_mcp_user.go (filter-at-register block + WithForceReconnect wiring), pool.go (reconnPending skip), bridge_tool.go (session reset detection + WithForceReconnect callback).

* fix(mcp): self-heal grant cache + bypass per-user grant for system/empty userID

Two production fixes for "MCP tool: grant revoked" recurring on song-nhi-v2.

(1) System-user bypass in ListAccessible: Registration uses LoadForAgent(ctx, agentID, "") while execute uses IsAllowed(ctx, agentID, "system", ...). The LEFT JOIN on mcp_user_grants could match a stale disabled row keyed user_id='system' and silently filter the server out only at execute. Skip the join entirely for synthetic owner identities (userID="" or "system") so registration and execute see the same set. Applied to both PostgreSQL (mcp_servers_access.go) and SQLite (mcp_servers_access.go).

(2) Grant-checker no-cache on empty allowByServer: grant_checker.loadEntry now skips the cache write when allowByServer is empty. Without this, a single transient empty result pinned permanent denial until a bus invalidate fired. Re-queries until the empty condition clears, then caches normally. Includes TestStoreGrantChecker_EmptyEntryNotCached.
2026-05-28 14:04:04 +07:00
2026-05-24 11:27:02 +07:00
2026-05-18 13:13:42 +07:00
2026-04-11 13:29:42 +07:00

GoClaw

Multi-Tenant AI Agent Platform

Multi-agent AI gateway built in Go. 20+ LLM providers. 7 channels. Multi-tenant PostgreSQL.
Single binary. Production-tested. Agents that orchestrate for you.

Documentation • Quick Start • Twitter / X

Go PostgreSQL Docker WebSocket OpenTelemetry Anthropic OpenAI License: CC BY-NC 4.0

🌐 Languages: 🇨🇳 简体中文 · 🇯🇵 日本語 · 🇰🇷 한국어 · 🇻🇳 Tiếng Việt · 🇵🇭 Tagalog · 🇪🇸 Español · 🇧🇷 Português · 🇮🇹 Italiano · 🇩🇪 Deutsch · 🇫🇷 Français · 🇸🇦 العربية · 🇮🇳 हिन्दी · 🇷🇺 Русский · 🇧🇩 বাংলা · 🇮🇱 עברית · 🇵🇱 Polski · 🇨🇿 Čeština · 🇳🇱 Nederlands · 🇹🇷 Türkçe · 🇺🇦 Українська · 🇮🇩 Bahasa Indonesia · 🇹🇭 ไทย · 🇵🇰 اردو · 🇷🇴 Română · 🇸🇪 Svenska · 🇬🇷 Ελληνικά · 🇭🇺 Magyar · 🇫🇮 Suomi · 🇩🇰 Dansk · 🇳🇴 Norsk

Core Features

  • 8-Stage Agent Pipeline — context → history → prompt → think → act → observe → memory → summarize. Pluggable stages, always-on execution
  • 4-Mode Prompt System — Full / Task / Minimal / None with section gating, cache boundary optimization, and per-session mode resolution
  • 3-Tier Memory — Working (conversation) → Episodic (session summaries) → Semantic (knowledge graph). Progressive loading L0/L1/L2
  • Knowledge Vault — Document registry with wikilinks, hybrid search (FTS + pgvector), filesystem sync
  • Agent Teams & Orchestration — Shared task boards, inter-agent delegation (sync/async), 3 orchestration modes (auto/explicit/manual)
  • Self-Evolution — Metrics → suggestions → auto-adapt with guardrails. Agents refine their own communication style
  • Multi-Tenant PostgreSQL — Per-user workspaces, per-user context files, encrypted API keys (AES-256-GCM), RBAC, isolated sessions
  • 20+ LLM Providers — Anthropic (native HTTP+SSE with prompt caching), OpenAI, OpenRouter, Groq, DeepSeek, Gemini, Mistral, xAI, MiniMax, DashScope, Claude CLI, Codex, ACP, and any OpenAI-compatible endpoint
  • 7 Messaging Channels — Telegram, Discord, Slack, Zalo OA, Zalo Personal, Feishu/Lark, WhatsApp
  • Production Security — 5-layer permission system, rate limiting, prompt injection detection, SSRF protection, AES-256-GCM encryption
  • Single Binary — ~25 MB static Go binary, no Node.js runtime, <1s startup, runs on a $5 VPS
  • Observability — Built-in LLM call tracing with spans and prompt cache metrics, optional OpenTelemetry OTLP export

Desktop Edition (GoClaw Lite)

A native desktop app for local AI agents — no Docker, no PostgreSQL, no infrastructure.

macOS:

curl -fsSL https://raw.githubusercontent.com/nextlevelbuilder/goclaw/main/scripts/install-lite.sh | bash

Windows (PowerShell):

irm https://raw.githubusercontent.com/nextlevelbuilder/goclaw/main/scripts/install-lite.ps1 | iex

What's Included

  • Single native app (Wails v2 + React), ~30 MB
  • SQLite database (zero setup)
  • Chat with agents (streaming, tools, media, file attachments)
  • Agent management (max 5), provider config, MCP servers, skills, cron
  • Team tasks with Kanban board and real-time updates
  • Auto-update from GitHub Releases

Lite vs Standard

Feature Lite (Desktop) Standard (Server)
Agents Max 5 Unlimited
Teams Max 1 (5 members) Unlimited
Database SQLite (local) PostgreSQL
Memory FTS5 text search pgvector semantic
Channels — Telegram, Discord, Slack, Zalo, Feishu, WhatsApp
Knowledge Graph — Full
RBAC / Multi-tenant — Full
Auto-update GitHub Releases Docker / binary

Building from Source

# Prerequisites: Go 1.26+, pnpm, Wails CLI (go install github.com/wailsapp/wails/v2/cmd/wails@latest)
make desktop-build                    # Build .app (macOS) or .exe (Windows)
make desktop-dmg VERSION=0.1.0        # Create .dmg installer (macOS only)
make desktop-dev                      # Dev mode with hot reload

Desktop Releases

Desktop uses independent versioning with lite-v* tags:

git tag lite-v0.1.0 && git push origin lite-v0.1.0
# → GitHub Actions builds macOS (.dmg + .tar.gz) + Windows (.zip)
# → Creates GitHub Release with all assets

Architecture

Multi-Tenant Architecture

3-Tier Memory

8-Stage Agent Pipeline

4-Mode Prompt System

Quick Start

Prerequisites: Go 1.26+, PostgreSQL 18 with pgvector, Docker (optional)

From Source

git clone -b main https://github.com/nextlevelbuilder/goclaw.git && cd goclaw
make build
./goclaw onboard        # Interactive setup wizard
source .env.local && ./goclaw

Note: The default branch is dev (active development). Use -b main to clone the stable release branch.

With Docker

# Generate .env with auto-generated secrets
chmod +x prepare-env.sh && ./prepare-env.sh

# Add at least one GOCLAW_*_API_KEY to .env, then:
make up

# Web Dashboard at http://localhost:18790 (built-in)
# Health check: curl http://localhost:18790/health

# Optional: separate nginx for custom SSL/reverse proxy
# make up WITH_WEB_NGINX=1  → Dashboard at http://localhost:3000

make up creates a Docker network, embeds the correct version from git tags, builds and starts all services, and runs database migrations automatically.

Common commands:

make up                # Start all services (build + migrate)
make down              # Stop all services
make logs              # Tail logs (goclaw service)
make reset             # Wipe volumes and rebuild from scratch

Optional services — enable with WITH_* flags:

Flag Service What it does
WITH_BROWSER=1 Headless Chrome Enables browser tool for web scraping, screenshots, automation
WITH_OTEL=1 Jaeger OpenTelemetry tracing UI for debugging LLM calls and latency
WITH_SANDBOX=1 Docker sandbox Isolated container for running untrusted code from agents
WITH_TAILSCALE=1 Tailscale Expose gateway over Tailscale private network
WITH_REDIS=1 Redis Redis-backed caching layer

Flags can be combined and work with all commands:

# Start with browser automation and tracing
make up WITH_BROWSER=1 WITH_OTEL=1

# Stop everything including optional services
make down WITH_BROWSER=1 WITH_OTEL=1

When GOCLAW_*_API_KEY environment variables are set, the gateway auto-onboards without interactive prompts — detects provider, runs migrations, and seeds default data.

Docker image variants:

Image Description
latest Backend + embedded web UI + Python (recommended)
latest-base Backend API-only, no web UI, no runtimes
latest-full All runtimes + skill dependencies pre-installed
latest-otel Latest + OpenTelemetry tracing
goclaw-web Standalone nginx + React SPA (for custom reverse proxy)

For custom builds (Tailscale, Redis): docker build --build-arg ENABLE_TSNET=true ... See the Deployment Guide for details.

Updating

Docker

docker compose pull && docker compose up -d

Binary (with embedded web UI)

goclaw update --apply    # Downloads, verifies SHA256, swaps binary, restarts

Web Dashboard

Open About dialog → click Update Now (admin only). The update includes both backend and web dashboard when using the default latest image.

Multi-Agent Orchestration

Agent Orchestration

Each agent runs with its own identity, tools, LLM provider, and context files. Three delegation modes — sync (wait), async (fire-and-forget), bidirectional — connected through explicit permission links with concurrency limits.

Details: Agent Teams docs

Knowledge Vault

Knowledge Vault

Document registry with [[wikilinks]] for bidirectional linking. Hybrid search combines full-text (BM25) and semantic (pgvector) for precise retrieval. Filesystem sync keeps vault in sync with on-disk files.

Self-Evolution

Self-Evolution

Agents improve themselves through a 3-stage guardrailed pipeline: metrics collection → suggestion analysis → auto-adaptation. Can refine communication style and domain expertise (CAPABILITIES.md) — but never change identity, name, or core purpose.

Provider Adapters

Provider Adapters

20+ LLM providers unified through a single adapter interface. Capability-based routing, encrypted API keys (AES-256-GCM), extended thinking support per-provider, and prompt caching for Anthropic + OpenAI.

Event-Driven Architecture

DomainEventBus

Typed domain events power the consolidation pipeline — session summaries, knowledge graph extraction, and dreaming promotion all run asynchronously via worker pools with dedup and retry.

Built-in Tools

30+ tools across 8 categories:

Category Tools Description
Filesystem read_file, write_file, edit_file, list_files, search, glob File operations with virtual FS routing
Runtime exec, browser Shell commands (approval workflow) + browser automation
Web web_search, web_fetch Search (Brave, DuckDuckGo) + content extraction
Memory memory_search, memory_get, knowledge_graph_search 3-tier memory + KG traversal
Media create_image, create_audio, create_video, read_*, tts Generation + analysis (multi-provider)
Skills skill_search, use_skill, skill_manage BM25 + semantic hybrid search
Teams team_tasks, spawn, delegate, message Task board + orchestration + messaging
Automation cron, heartbeat, sessions_* Scheduling + session management

Full tool reference at docs.goclaw.sh

Webhook API

Trigger agents or send channel messages from external systems without the gateway token.

# Bearer auth — sync LLM call
curl -X POST https://example.com/v1/webhooks/llm \
  -H "Authorization: Bearer wh_..." \
  -H "Content-Type: application/json" \
  -d '{"input":"Summarize today metrics","mode":"sync"}'

# HMAC auth — sign with hmac_signing_key from create response
TS=$(date +%s); BODY='{"input":"hi","mode":"sync"}'
SIG=$(echo -n "${TS}.${BODY}" | openssl dgst -sha256 -mac HMAC \
      -macopt "hexkey:${WEBHOOK_HMAC_KEY}" | awk '{print $2}')
curl -X POST https://example.com/v1/webhooks/llm \
  -H "Content-Type: application/json" \
  -H "X-Webhook-Id: ${WEBHOOK_ID}" \
  -H "X-GoClaw-Signature: t=${TS},v1=${SIG}" \
  -d "$BODY"

See docs/webhooks.md for the full reference: auth, async callbacks, retry schedule, HMAC examples, channel matrix.

Documentation

Full documentation at docs.goclaw.sh — or browse the source in goclaw-docs/

Section Topics
Getting Started Installation, Quick Start, Configuration, Web Dashboard Tour
Core Concepts Agent Loop, Sessions, Tools, Memory, Multi-Tenancy
Agents Creating Agents, Context Files, Personality, Sharing & Access
Providers Anthropic, OpenAI, OpenRouter, Gemini, DeepSeek, +15 more
Channels Telegram, Discord, Slack, Feishu, Zalo, WhatsApp, WebSocket
Agent Teams Teams, Task Board, Messaging, Delegation & Handoff
Advanced Custom Tools, MCP, Skills, Cron, Sandbox, Hooks, RBAC
Deployment Docker Compose, Database, Security, Observability, Tailscale
Reference CLI Commands, REST API, WebSocket Protocol, Environment Variables

Testing

go test ./...                                    # Unit tests
go test -v ./tests/integration/ -timeout 120s    # Integration tests (requires running gateway)

Project Status

See CHANGELOG.md for detailed feature status including what's been tested in production and what's still in progress.

Acknowledgments

GoClaw was originally inspired by the OpenClaw project architecture.

License

CC BY-NC 4.0 — Creative Commons Attribution-NonCommercial 4.0 International

Star History

Star History Chart
S
Description
GoClaw - GoClaw is OpenClaw rebuilt in Go — with multi-tenant isolation, 5-layer security, and native concurrency. Deploy AI agent teams at scale without compromising on safety.
Readme
42 MiB
0 Stars 1 Watchers 0 Forks
Languages
Go 77.8%
TypeScript 19.9%
Python 1.3%
HTML 0.3%
JavaScript 0.2%
Other 0.3%