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Pizza Bot: Open-Source Inbox for Background AI Agents
- Authors
- Name
- DeepHorus
A team of developers at AWS has open-sourced Pizza Bot, a self-hosted application that lets AI agents run tasks in the background and return results through an inbox-style interface. Released under the Apache 2.0 license, the tool uses a client-server architecture so users can delegate long-running work without watching it continuously. Agents can perform scheduled or webhook-triggered jobs, hand off subtasks to specialized workers, and pause for human approval before consequential actions. Joseph Dolivo, principal technologist at AWS, and Igor Fil, solutions architect at AWS, described it as an option offering "the developer details, minus the grease."
The project grew out of a side-of-desk effort Dolivo launched in April 2025, a passion project called "JoeBot" that automated tedious CRM logging. On LinkedIn, Dolivo said the name is a direct homage to Amazon's two-pizza teams and that the idea grew once non-technical users wanted in. The authors told Hacker News they were inspired by a LangChain article about "ambient agents" that work away from the user's attention. The inbox metaphor anchors the design: as Dolivo and Fil explained, you don't send an email and watch the outbox until a reply lands, so a thread becomes a unit of work to return to rather than a session to attend.
Four requirements shape the system: agents must inspect multiple sources, work in the background, request approval before consequential actions, and notify users when work is complete. The inbox organizes that work into All, Unread, and Action queues, while an Activity panel shows tasks delegated to specialist agents and their progress. Pizza Bot supports multiple model providers, MCP servers, and Agent Skills, keeping flexibility in how agents are composed. The result is a single visible thread covering delegation, checkpointing, and human review.
Data handling is deliberately local-first. Agent state, threads, checkpoints, attachments, and logs are persisted in a user-controlled folder, and credentials are stored in the operating system's secret store. Only prompts and attachments reach the configured model provider, alongside tool calls to explicitly enabled MCP servers. Dolivo and Fil cautioned that "those servers can act on your behalf, which is worth remembering when you install one."
Early reactions on Hacker News were overwhelmingly positive, focused on the asynchronous inbox model and local-first architecture. Some commenters praised the project while questioning the number of tools now chasing similar goals, and whether an open-source effort can recreate the skills and integrations ecosystem that made the internal version successful. Pizza Bot remains a community project rather than an AWS service, shipping without AWS support or a service-level agreement. Developers are responsible for keeping it running, backed up, and up to date as the project moves beyond its internal roots.
