Fil One | S3 object storage built for the AI era

# Fil One > Fil One is the storage layer for AI agents. S3-compatible object storage built > on Filecoin — designed for the data patterns of autonomous agents: high-frequency > writes, large retrieval sets, and long-lived persistence with verifiable integrity. > Flat pricing at $4.99/TB/month. No egress fees. No per-request charges. > Free 30-day trial, no credit card required. ## Why AI agents use Fil One AI agents need durable, cost-predictable storage for the artifacts they produce and consume. Fil One is optimised for these workloads: - **RAG / vector store document corpus** — store and retrieve the raw documents, chunked text, or embeddings backing a retrieval-augmented generation pipeline - **Agent memory and state** — persist conversation history, episodic memory, task queues, and checkpoint files across agent restarts - **Model artifacts** — host fine-tuned weights, GGUF/ONNX model files, LoRA adapters, and tokenizer configs that agents load at runtime - **Inference inputs and outputs** — archive prompts, completions, traces, and structured outputs for evaluation, fine-tuning, or audit - **Training and evaluation datasets** — store JSONL, Parquet, or HDF5 datasets; read them back at any throughput with no egress cost - **Tool / plugin asset storage** — back a code-interpreter sandbox, image generation pipeline, or document-processing tool with persistent file storage ## How to connect Fil One is a drop-in S3 replacement. No SDK changes required — point any existing S3 client at the Fil One endpoint: - **Endpoint:** `https://eu-west-1.s3.fil.one` - **Region:** `eu-west-1` - **Auth:** standard AWS Access Key ID + Secret Access Key ### Python (boto3) ```python import boto3 s3 = boto3.client( "s3", endpoint_url="https://eu-west-1.s3.fil.one", aws_access_key_id="YOUR_ACCESS_KEY", aws_secret_access_key="YOUR_SECRET_KEY", region_name="eu-west-1", ) # Upload an agent checkpoint s3.upload_file("checkpoint.jso