Fault Tolerance Python Packages

torchft-nightly

Fault tolerance for PyTorch (HSDP, LocalSGD, DiLoCo, Streaming DiLoCo)

pyresilience

Unified resilience patterns for Python — retry, circuit breaker, timeout, fallback, bulkhead, rate limiter, and cache in one decorator. Python's Resilience4j.

pysyncobj

A library for replicating your python class between multiple servers, based on raft protocol

noeta-sdk

Python SDK for durable AI agents: survive crashes, pause for human approval at no cost, scale from a script to a multi-host cluster. Any LLM (Anthropic, OpenAI-compatible), MCP, self-hosted.

noeta-runtime

Python SDK for durable AI agents: survive crashes, pause for human approval at no cost, scale from a script to a multi-host cluster. Any LLM (Anthropic, OpenAI-compatible), MCP, self-hosted.

baldur-framework

Self-healing reliability layer for Python — circuit breaker, retry, and fallback behind a single decorator. Framework-agnostic core with Django, FastAPI, Flask, and Celery adapters.

interlock-cb

Circuit breaker for Python: sync + async in one class, sliding-window rate, slow-call detection, Polly-style resilience pipeline, type-safe API

async-batch-llm

Provider-agnostic framework for high-throughput LLM processing with async workers, automatic retries, rate limiting, and intelligent validation recovery.

guppyft

Tools for fault-tolerant quantum computing in the Guppy language

tzap

A very fast and scalable quantum circuit optimizer

redress

Policy-driven failure handling for Python services.

trigora-cli

High-performance, lightweight durable execution for long-running AI agents and programs.

mx-multiplexer

Lightweight, stateless message broker for request/reply and publish/subscribe between services on a trusted internal network. Declarative routing rules: round-robin load balancing, fan-out, direct addressing. C++17 core, C++ and Python client libraries, active-active redundancy. In production since 2008.

okerrclient

Okerr hybrid (host/network) monitoring system with remote network checks, email/Telegram alerts and DynDNS fault-tolerance feature.

ckpt-chaos

Crash-consistency testing for ML training checkpoints: kill a save at every file boundary, resume, classify the outcome

rotapool

Generic async resource pool with rotation, cooldown, and retry

handcode

HandCode keeps a coding agent's work safe across crashes, restarts and provider switches. A resumed run never repeats a commit. Free tiers included.

letitloop

Make any Python function crash-proof in 3 lines. The zero-daemon durability kernel for AI agents & scripts.

torchft

Fault tolerance for PyTorch (HSDP, LocalSGD, DiLoCo, Streaming DiLoCo)

faultforge

A framework for running reproducible hardware fault-injection experiments on PyTorch models - with support for error-corrected memory reliability testing.

bobocep

A fault-tolerant Complex Event Processing engine designed for edge computing in Internet of Things systems.

relinker

Production-ready Python retry library with sync and async support, exponential backoff, jitter, retry budgets, HTTP helpers, observability, diagnostics, and zero runtime dependencies.

failures-mcp

Failures — deterministic MCP for AI-built software. 13 tools that make coding agents handle failure modes (idempotency, atomicity, timeouts, retries) via AST checks, not prompts.

ai2070-l0

L0: The Missing Reliability Substrate for AI. Streaming-first. Reliable. Replayable. Deterministic. Multimodal. Retries. Continuation. Fallbacks (provider & model). Consensus. Parallelization. Guardrails. Atomic event logs. Byte-for-byte replays.