# `ReqManagedAgents.Artifacts.AgentCoreSessionStorage`
[🔗](https://github.com/cash-mckeeman/req_managed_agents/blob/v0.12.0/req_managed_agents/lib/req_managed_agents/artifacts/agent_core_session_storage.ex#L1)

`ReqManagedAgents.Artifacts` store over an AgentCore harness `sessionStorage`
mount (the no-VPC filesystem type), backed by `InvokeAgentRuntimeCommand`.

Verbs run python3 one-liners in the session microVM (python3 is guaranteed in
the base image); file bytes transit the command stream as Base64, so this
store is for report-scale artifacts, not GB-scale data. Names are restricted
to `[A-Za-z0-9._-]` (no separators, no traversal). A verb that exits non-zero
unexpectedly returns `{:error, {:command_failed, %CommandResult{}}}` — stderr
is never swallowed.

Concurrent `put`s of the SAME name in the same store race on a fixed
`.rma_b64_part` temp path — callers must serialize same-name writes.

# `store`

Build a store term. `base_path` is the harness's `sessionStorage` mountPath
(e.g. `"/mnt/data"`). `command_fun` is injectable for tests; defaults to
`ReqManagedAgents.AgentCore.Client.invoke_agent_runtime_command/2` on `client`.

Raises `ArgumentError` if `base_path` contains a single quote: paths are
single-quoted into shell commands, and `base_path` is operator-controlled
config, so a bad value is a construction-time programmer error.

---

*Consult [api-reference.md](api-reference.md) for complete listing*