agent-2pc v2.0.0: Flagship 2.0 Release - Git Pre-Commit Hook Bridge & Daemon TTL Reaper

🚀 Welcome to agent-2pc v2.0.0 (Flagship Release)

agent-2pc v2.0.0 delivers enterprise-grade repository integrity, automated lifecycle management, and seamless Git sync.

• Git Pre-Commit Hook & Integrity Gate (src/git.rs):
  • agent-2pc hook install [--repo-dir <dir>]: Injects an automated repository integrity hook into .git/hooks/pre-commit.
  • agent-2pc hook check: Validates that no uncommitted, half-baked 2PC transactions are pending in .agent-tx, preventing dirty agent edits from corrupting Git history.
  • agent-2pc git-commit --tid <TID> -m <msg>: Atomically commits a 2PC transaction and creates a corresponding Git commit for touched files in a single unified step.
• Daemon Background TTL Reaper & Auto-Compaction (src/daemon.rs):
  • In-memory background thread continuously sweeps active transactions exceeding their timeout_ms TTL.
  • Automatically compensates and aborts orphaned transactions, wiping scratch storage without manual developer intervention.
  • Automatically triggers zero-downtime WAL compaction when wal.bin exceeds 2MB.
  • Added agent-2pc daemon reap and telemetry counters (reaped_transactions, auto_compactions).
• MCP Tool Surface (21 Tools):
  • Added agent_2pc_hook_check and agent_2pc_git_commit with full M8ven / OpenAI dual-location behavioral hints.
• Client SDKs Synchronized:
  • Python (sdk/python): session.git_commit(message).
  • TypeScript (sdk/typescript): session.gitCommit(message).
• Quality & Registry Standards:
  • 53/53 passing tests across 13 test suites.
  • Zero warnings under cargo clippy --all-targets -- -D warnings on Rust 2024 edition.
  • Published to Crates.io: cargo install agent-2pc (v2.0.0).

agent-2pc v1.9.0: Unified Diff Preview Engine & Portable .a2pc Transaction Bundles

⚡ What's New in v1.9.0

• Transaction Unified Diff & Diffstat Engine (src/diff.rs):
  • Added agent-2pc diff --tid <TID> [--stat] and MCP tool agent_2pc_diff.
  • Generates git-style unified diffs and file change statistics across all staged mutations in Phase 1 before calling commit.
• Portable Swarm Transaction Bundles (src/bundle.rs):
  • Added agent-2pc export --tid <TID> [--output <file>] and agent-2pc import --file <bundle.a2pc>.
  • Serializes an active 2PC transaction into a portable .a2pc bundle with full scratch filesystem payloads and CRC32 tamper verification.
  • Allows cross-agent handoffs, multi-agent code review, and swarm coordination.
• MCP Surface Expansion (19 Tools):
  • Registered agent_2pc_diff, agent_2pc_export, and agent_2pc_import with full M8ven/OpenAI dual-location behavioral annotations.
• Client SDKs Updated:
  • Python SDK: added session.diff(stat=...) and session.export_bundle(output=...).
  • TypeScript SDK: added session.diff(stat?: boolean) and session.exportBundle(output?: string).
• Registry & Verification:
  • 49/49 passing tests across 12 test suites.
  • Clippy clean on Rust 2024 edition.
  • Live on Crates.io: cargo install agent-2pc (v1.9.0).

agent-2pc v1.8.0: Auto-Detect UDS Daemon Acceleration & Targeted Substring Replace Staging

⚡ What's New in v1.8.0

• Auto-Detect UDS Daemon Acceleration (ClientMode::Auto):
  • CLI subcommands (begin, stage-write, commit, abort, status, savepoint, rollback-to, stage-replace) and MCP tools automatically probe .agent-tx/agent-2pc.sock.
  • When the background daemon is active, requests route through in-memory IPC in < 0.2ms with zero disk lock contention.
  • Automatically falls back to direct-disk WAL coordinator when the daemon is offline.
• Targeted Substring Replace Staging (agent-2pc stage-replace / agent_2pc_stage_diff):
  • Direct exact string find-and-replace (ResourceIntent::FsReplace).
  • Asserts match count == 1 before voting PREPARED, preventing ambiguous edits.
  • Pre-snapshots destination file to .bak in scratch storage.
• Benchmark Expansion & Throughput Verification:
  • Added in-memory UDS daemon IPC throughput test suite (tests/benchmark.rs).
  • Verified 104.5 tx/sec roundtrip throughput over socket streams.
• Client SDKs Updated:
  • Python: added session.stage_replace(path, old_string, new_string).
  • TypeScript: added session.stageReplace(path, oldString, newString).
• Live on Crates.io:
  • cargo install agent-2pc (v1.8.0 live on registry).

agent-2pc v1.7.2: Dual-Location Tool Annotations for M8ven & OpenAI Compliance

⚡ What's New in v1.7.2

• Dual-Location MCP Tool Annotations (src/mcp.rs):
  • Declared all four behavioral hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) inside the standard MCP annotations: { ... } sub-object as well as at the tool root level.
  • Fixes strict schema validation for MCP indexers (M8ven, OpenAI Directory, Anthropic MCP client).
• 100% Tool Coverage Verification:
  • Automated integration test tests/mcp_test.rs asserts that every declared tool exposes all 4 hints in both locations.
• Published to Crates.io & GitHub Releases:
  • Live on Crates.io (agent-2pc v1.7.2).
  • Pre-compiled binary artifacts built for Linux x86_64 and macOS Darwin.

agent-2pc v1.7.1: M8ven Trust Index Optimizations & Full MCP Tool Annotations

⚡ What's New in v1.7.1

• Full M8ven / OpenAI Tool Annotations (src/mcp.rs):
  • Declared all four behavioral hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) as explicit booleans across all 15 declared MCP tools.
  • Satisfies strict registry requirements for Claude, OpenAI, and M8ven Trust Index.
• 100% MCP Tool Test Reference Coverage (tests/mcp_test.rs):
  • Every single declared MCP tool (agent_2pc_begin, agent_2pc_record_read, agent_2pc_stage_write, agent_2pc_savepoint, agent_2pc_stage_patch, agent_2pc_stage_cmd, agent_2pc_stage_api, agent_2pc_rollback_to, agent_2pc_status, agent_2pc_daemon_status, agent_2pc_commit, agent_2pc_compact, agent_2pc_abort, agent_2pc_exec, agent_2pc_overlay_exec) is invoked and verified by name in integration testing.
• Dynamic serverInfo Version Sync:
  • MCP initialization handshake dynamically returns active SemVer (1.7.1).
• Live on Crates.io:
  • Published to Crates.io: cargo install agent-2pc.

agent-2pc v1.7.0: WASI Sandboxing & Full MCP Tool Surface Expansion

🚀 agent-2pc v1.7.0 Production Release

Database-grade Two-Phase Commit with cross-platform WASI memory caging and complete Model Context Protocol tool coverage for AI agent workflows.

---

🌟 What's New in v1.7.0

• WASI / WebAssembly Sandboxed Tool Adapter (src/wasi.rs):
  • Cross-platform hardware-independent plugin execution with strict memory caps (max_memory_mb) and execution timeouts.
  • Zero-dirty-state rollbacks on any operating system, container, or rootless sandbox.
• Full Model Context Protocol (MCP) Tool Surface (src/mcp.rs):
  • agent_2pc_exec: Run build tools and auto-stage mutations directly via MCP.
  • agent_2pc_overlay_exec: In-kernel OverlayFS sandboxing over stdio JSON-RPC.
  • agent_2pc_daemon_status: Check active UDS daemon status and socket health.
• Published to Crates.io (agent-2pc v1.7.0):
  • Live on the official Rust package registry: cargo install agent-2pc.

---

🧪 Verification

• 43/43 Passing Tests across 11 test suites.
• Clean Clippy (cargo clippy --all-targets -- -D warnings).

agent-2pc v1.6.0: Kernel OverlayFS Zero-Copy Staging & Live Web Hypervisor HUD

🚀 agent-2pc v1.6.0 Production Release

Zero-copy kernel sandboxing, sub-50µs rollbacks, and real-time visual hypervisor monitoring for autonomous AI agent tool execution.

---

🌟 What's New in v1.6.0

• Linux Kernel OverlayFS Driver (src/overlay.rs):
  • Spawns arbitrary compiler, migration, or test commands inside unprivileged user + mount namespaces (unshare -m -U).
  • Mutations are isolated directly into an ephemeral in-kernel upperdir, avoiding full workspace scans and disk thrashing.
  • Sub-50µs abort cleanup: unmounts and discards upperdir instantly on failure.
• Embedded Real-Time Web Hypervisor HUD (src/web_hud.rs):
  • Zero-dependency vanilla HTML5/CSS/JS dashboard served on localhost:9222 (agent-2pc web).
  • Live auto-refreshing polling endpoints (/api/status) rendering in-flight transaction DAGs, active savepoints, and WAL disk consumption.
• Client SDKs Synchronized:
  • Python and TypeScript SDKs updated with savepoints, rollback-to, and exec staging helpers.

---

📦 Installation

# Direct binary (Linux x86_64)
curl -fsSL https://github.com/ronitgupta138/agent-2pc/releases/download/v1.6.0/agent-2pc-v1.6.0-x86_64-unknown-linux-gnu.tar.gz | tar -xz
sudo mv agent-2pc /usr/local/bin/

# Direct binary (macOS Apple Silicon)
curl -fsSL https://github.com/ronitgupta138/agent-2pc/releases/download/v1.6.0/agent-2pc-v1.6.0-aarch64-apple-darwin.tar.gz | tar -xz
sudo mv agent-2pc /usr/local/bin/

# Cargo
cargo install agent-2pc

---

🧪 Verification

• 41/41 Passing Tests across 10 test suites.
• Zero clippy warnings (cargo clippy --all-targets -- -D warnings).

agent-2pc v1.5.0: Multi-Node Cluster Network Transport & Distributed 2PC TCP Protocol

🚀 agent-2pc v1.5.0 Production Release

Bring database ACID transactional finality to autonomous AI agents, tool orchestrators, and MCP execution pipelines with zero dirty state, sub-2ms transaction latency, and deterministic crash recovery.

---

🌟 What's New in v1.5.0

• Multi-Node Cluster Network Transport (src/transport.rs):
  • High-performance, zero-dependency TCP network transport for cross-container and multi-host distributed 2PC agent swarms.
  • ClusterNodeServer: Non-blocking multi-threaded TCP listener handling remote 2PC coordinator requests.
  • ClusterTransportClient: Direct socket client dispatching wire packets with timeout containment.
• Wire-Level 2PC Protocol Handshake:
  • Implements full network serialization for PrepareRequest, PrepareResponse, CommitRequest, CommitResponse, AbortRequest, and AbortResponse.
  • Integrates with ClusterCoordinator consensus evaluation across heterogeneous physical nodes.
• Transparent Command Side-Effect Staging (agent-2pc exec):
  • Run arbitrary compilers, linters, migration scripts, or test harnesses directly against the workspace (ExecRunner::execute_and_stage).
  • Automatic directory-wide file fingerprinting (CRC32) before and after process execution.
  • Automatically identifies all newly created and modified files, creates clean .bak snapshots, and auto-stages mutations into Phase 1 2PC receipts with zero manual effort.
• In-Memory UDS Daemon & IPC Connection Pooling (agent-2pc daemon):
  • Persistent background service managing transaction state in memory over .agent-tx/agent-2pc.sock.
  • Eliminates filesystem lock contention across concurrent multi-agent tool loops.
• Nested Savepoints & Speculative Execution (agent-2pc savepoint / rollback-to):
  • Branch into speculative refactors and selectively unwind failed steps back to named checkpoints without aborting verified preceding stages.
• Zero-Downtime WAL Compaction & Checkpoint Engine (agent-2pc compact):
  • Purges historical committed/aborted records into clean snapshot barriers (0x4132534E), dropping cold-boot recovery from $O(N)$ to $O(1)$.

---

📦 Installation & Quickstart

Direct Binary Download (Linux x86_64)

curl -fsSL https://github.com/ronitgupta138/agent-2pc/releases/download/v1.5.0/agent-2pc-v1.5.0-x86_64-unknown-linux-gnu.tar.gz | tar -xz
sudo mv agent-2pc /usr/local/bin/

Cargo Install

cargo install agent-2pc

Drop-in MCP Setup (claude_desktop_config.json)

{
  "mcpServers": {
    "agent-2pc": {
      "command": "agent-2pc",
      "args": ["mcp"]
    }
  }
}

---

🧪 Verification & Benchmarks

• 39/39 Tests Passing across 9 integration test suites.
• 114.4 tx/sec verified 2PC round throughput with physical disk fsync.
• p50 = 1.72ms hardware-accelerated CRC32 Write-Ahead Log durability.
• Zero clippy warnings on Rust 2024 edition (cargo clippy --all-targets -- -D warnings).

agent-2pc v1.4.0: Transparent Command Execution Side-Effect Staging Runner

⚡ What's New in v1.4.0

• Transparent Command Side-Effect Staging (src/exec.rs):
  • Run arbitrary compilers, linters, migration scripts, or test harnesses directly against the workspace (ExecRunner::execute_and_stage).
  • Automatic directory-wide file fingerprinting (CRC32) before and after process execution.
  • Automatically identifies all newly created and modified files, creates clean .bak snapshots, and auto-stages mutations into Phase 1 2PC receipts with zero manual effort.
• Atomic Failure Neutralization:
  • If a command fails (exit code != 0), all workspace modifications are immediately reverted to pre-execution state without dirty residue.
• Surfaces & CLI:
  • CLI subcommand: agent-2pc exec --tid <TID> [--dir <PATH>] -- <COMMAND...>.
• Verification:
  • 37/37 passing tests including automated staging and failure rollback tests in tests/exec_staging_test.rs.

agent-2pc v1.3.0: Zero-Dependency UDS Daemon & IPC Connection Pooling

⚡ What's New in v1.3.0

• In-Memory Transaction Daemon (src/daemon.rs):
  • High-performance, zero-disk-contention background daemon serving Coordinator requests over local Unix Domain Sockets (.agent-tx/agent-2pc.sock).
  • Implemented with pure standard library (std::os::unix::net::UnixListener) — zero external async runtime bloat.
• IPC Protocol & Client (src/ipc.rs):
  • Bidirectional line-delimited JSON-RPC framing supporting ping, begin, stage_write, stage_patch, stage_cmd, stage_api, savepoint, rollback_to, commit, abort, status, record_read, and compact.
  • Concrete adapter reconstruction (reconstruct_adapters in src/adapters.rs) allowing stateless IPC client invocations to commit/rollback across heterogeneous resources.
• Surfaces & CLI:
  • CLI subcommand: agent-2pc daemon start [--foreground], agent-2pc daemon stop, agent-2pc daemon status.
• Verification:
  • 35/35 passing tests including concurrent multi-client stress tests in tests/daemon_ipc_test.rs.