letta-ai/agent-file
Agent File (.af): An open file format for serializing stateful AI agents with persistent memory and behavior. Share, checkpoint, and version control agents across compatible frameworks. observed · 2026-08-28
Health v2 · maintenance only
52/100
- Activity 73
- Release rhythm 35
- Longevity 37
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 528
- days_rel: n/a
- days_push: 162
- n_releases_24m: 0
Adoption not part of the score
1196 stars · 114 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Agent File (.af) is an open file format for serializing stateful AI agents, packaging system prompts, persistent memory, tool configurations, and LLM settings into a portable file. This repository provides the format specification, example agents, and SDKs for importing and deploying .af files to Letta servers.
Use cases
- share AI agents with persistent memory as files
- checkpoint and version control agent state
- transfer agents between compatible frameworks
- import a prebuilt agent into my Letta server
- distribute agents with personality and memory baked in
When to choose
- you use Letta or a compatible framework and want portable, checkpointable agent state
- you want to share or version-control agents with memory and tool configs as files
When to avoid
- you need a general agent framework rather than a serialization format
- your framework does not support the .af standard
Facets
library · maturity active
serialization agent-framework sdk artificial-intelligence large-language-models developer-tools python cross-platform agent-file-format stateful-agents agent-portability agent-checkpointing open-standard letta ai-agents nodejs typescript
2 sources
- readme: https://github.com/letta-ai/agent-file · fetched 2026-08-28 · 9672b5d5cf1f
- homepage: https://agentfile-directory.vercel.app · fetched 2026-08-29 · a10f8ecd8fd9
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| letta-ai/agent-file | main | 52 |
For agents
markdown · JSON · MCP: product_card(name="letta-ai/agent-file")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem