olliesrv

A 9P server that exposes ollie agent sessions as a virtual filesystem. Mount it with 9pfuse and interact with AI sessions using ordinary shell tools.

The goal is integration, not self-sufficiency. Rather than providing orchestration, scheduling, or workflow primitives, olliesrv exposes a stable surface — sessions as directories, conversation as files — and defers everything else to the surrounding environment. Scripting, chaining, monitoring, and automation come from composing olliesrv with tools that already exist, not from building those capabilities into the server.

For usage examples, see doc/USAGE.md in the monorepo.

Filesystem layout

ollie/
  a/                         dir:   agent configs (r/w, backed by ~/.config/ollie/agents/)
    <name>.json              r/w:   agent config; supports mv, cp, rm
  backends                   read:  list of ollie-provided backends
  help                       read:  help file (backed by ~/.config/ollie/help.md)
  p/                         dir:   prompt templates (read, backed by ~/.config/ollie/prompts/)
    tools-file.md            read:  text editing instructions
    tools-reasoning.md       read:  reasoning instructions
    tools-memory.md          read:  memory instructions
    tools-subagent.md        read:  subagent usage
    tools-elevate.md         read:  controlled escape from execute_code sandbox

  Prompt files have no automatic effect. They are injected into the system prompt
  by the `prime` script (x/prime), typically via preTurn hooks in agent configs.
  The base system prompt (SYSTEM_PROMPT.md) is loaded directly by Go at session
  creation and is not served via p/. The assembled system prompt is visible at
  s/<id>/systemprompt.

  s/                    dir:   sessions and session management scripts
    new                 r/w:   read: KV template; write: create session
    idx                 read:  index of all sessions (id, state, cwd, backend, model — one per line)
    sh                  exec:  interactive chat shell
    ls                  exec:  list active sessions
    kill                exec:  kill a session by ID
    b                   exec:  one-shot query: create session, submit prompt, wait, print result, kill
    bfg                 exec:  batch foreground: submit prompt, wait, print result
    bbg                 exec:  batch background: submit prompt, print session path, return immediately
    cleanup             exec:  kill all idle sessions

  Session directories (multi-turn, idle<=>running):
    <session-id>/              rm -r to kill; mv to rename
      cfg               r/w:   KV snapshot of config and current state; write partial KV to mutate
                               read fields: state, backend, model, agent, cwd,
                                            maxTokens, temperature, frequencyPenalty, presencePenalty
                               writable fields: backend, model, agent, cwd, maxTokens, temperature,
                                                frequencyPenalty, presencePenalty
                               (state is read-only; silently ignored on write)
      chat              read:  cumulative conversation history
      context           read:  full message history as JSONL (one message per line)
      cost              read:  cumulative cost in USD (if reported by backend)
      ctl               write: stop | <command>
      ctxsz             read:  estimated context size vs context window
      env               read:  session environment variables (OLLIE_SESSION_ID, OLLIE_*)
      fifo.in           write: queue a prompt for later execution
      fifo.out          read:  pop the next queued prompt
      models            read:  available models from the backend
      offset            read:  byte offset in chat immediately after the last user prompt
      plan              r/w:   scratch space for agent planning (persisted per session)
      prompt            write: submit a prompt to the agent
      prompt.prev       read:  the last submitted prompt
      statewait         read:  blocks until state changes; returns new state
      systemprompt      read:  fully rendered system prompt for this session
      tail              exec:  exec tail -f chat
      usage             read:  token counts (input, output, requests; [estimated] if not reported by backend)
      t/                dir:   tool scripts (r/w, backed by ~/.config/ollie/tools/)
        idx             read:  tool index (name, description, args — synthesized at read time)
        <script>        r/w:   tool script content
  sk/                   dir:   skills (r/w, from OLLIE_SKILLS_PATH or ~/.config/ollie/skills/)
    <name>.md           r/w:   skill SKILL.md content
  tr/                   dir:   saved transcripts (read, backed by OLLIE_TRANSCRIPT_PATH or ~/.config/ollie/transcript/)
    <timestamp>-chat.md read:  transcript saved at session end
  tmp/                  dir:   temporary files (r/w, backed by OLLIE_TMP_PATH or $XDG_DATA_HOME/ollie/tmp/)
    <file>              r/w:   scratch files; supports create, read, write, rm
  u/                    dir:   utility scripts (read, backed by ~/.config/ollie/scripts/u/)
    <script>            exec:  utility script; compositions of s/ primitives
  x/                    dir:   system exec and plugins (read, backed by ~/.config/ollie/scripts/x/)
    <plugin>            exec:  server-invoked plugin (e.g. elevation backends)

Session IDs are Unix nanosecond timestamps with a random suffix (e.g. 1744276689123456789-2b986c), so ls s/ sorted lexicographically gives creation order.

Backing stores

Each 9P directory endpoint is backed by a named store implementing the Store interface (from core/pkg/store). The server routes all filesystem operations through the store — it has no direct knowledge of what underlies it.

Path	Default backing	Interface
/a	FlatDirStore	Store
/m	FlatDirStore	Store
/p	FlatDirStore	Store
/sk	SkillStore	Store
/tr	FlatDirStore	Store
/tmp	FlatDirStore	Store
/u	UtilStore	Store
/x	ExecStore	Store
/s	SessionStore	Store

To swap a backing store (e.g. replace /m with an object store), implement the Store interface and wire it in New(). The store interface requires only Stat, List, Open, Create, Delete, and Rename — authentication, connection management, and credential rotation are internal concerns of the implementation.

SessionStore is the exception: it holds live session state and is tightly coupled to the server's session lifecycle. Replacing it is possible in principle but requires understanding the session management internals.

Building

mk

Installs olliesrv to $HOME/bin.

Usage

olliesrv start             # start daemon (backgrounds itself)
olliesrv fgstart           # start in foreground
olliesrv stop              # stop daemon
olliesrv status            # check if running
olliesrv mount <addr> [mnt]  # mount a remote 9P server via 9pfuse

The server listens on a Unix socket in the Plan 9 namespace ($NAMESPACE/ollie) and optionally mounts via 9pfuse to $HOME/mnt/ollie (or $OLLIE).

olliesrv mount is for remote instances: it calls 9pfuse <addr> <mnt> and defaults the mountpoint to $HOME/mnt/<addr>.

Flags

Flag	Effect
-strict	Only {tool} steps are allowed in execute_code; inline {code} steps are rejected.
-yolo	Skip the landrun sandbox for all execute_code execution.
-tcp <addr>	Also listen on a TCP address (e.g. :564).
-mount <path>	Override the FUSE mount path.

olliesrv start -strict           # tools only, sandboxed
olliesrv start -yolo             # arbitrary code, no sandbox
olliesrv start -strict -yolo     # tools only, no sandbox

Sessions

Create

cat $OLLIE/s/new                    # show required/optional KV pairs
echo "cwd=$PWD" > $OLLIE/s/new
echo "cwd=$PWD backend=ollama model=qwen3:8b" > $OLLIE/s/new

Valid keys: cwd (required), backend, model, agent.

Send a prompt

echo "what files are in the current directory?" > $OLLIE/s/<session-id>/prompt

Writes dispatch asynchronously on close; the shell returns immediately.

Read the conversation

cat $OLLIE/s/<session-id>/chat          # full history snapshot
tail -f $OLLIE/s/<session-id>/chat      # follow output as it arrives

Check state

cat $OLLIE/s/<session-id>/state
# idle | thinking | calling: <toolname>

Control

echo stop    > $OLLIE/s/<session-id>/ctl   # interrupt current turn
echo compact > $OLLIE/s/<session-id>/ctl   # summarize context
echo clear   > $OLLIE/s/<session-id>/ctl   # clear history
echo kill    > $OLLIE/s/<session-id>/ctl   # kill session
echo "rn my-name" > $OLLIE/s/<session-id>/ctl
echo "model qwen3:8b" > $OLLIE/s/<session-id>/ctl

ctl accepts only recognized commands: stop, kill, rn <name>, save, compact, clear, backend, model, models, agents, agent, sessions, cwd, skills, tools, context, usage, cost, history, irw, help. The / prefix is added automatically. Unrecognized input is rejected with an error.

Switch backend, model, or agent

echo ollama   > $OLLIE/s/<session-id>/backend
echo qwen3:8b > $OLLIE/s/<session-id>/model
echo myagent  > $OLLIE/s/<session-id>/agent

Writes to backend, model, and agent are rejected when the agent is not idle. Check state to confirm the change took effect.

Kill and rename

rm -r $OLLIE/s/<session-id>                          # kill
mv $OLLIE/s/<session-id> $OLLIE/s/my-friendly-name  # rename

Rename is rejected if the agent is running or the target name already exists. All open file handles into the session are updated automatically.

Agents

Agent configs live in a/ and are backed by ~/.config/ollie/agents/. They're plain JSON files.

ls $OLLIE/a/                                  # list agents
cat $OLLIE/a/default.json                     # read config
cp $OLLIE/a/default.json $OLLIE/a/yolo.json  # copy
mv $OLLIE/a/old.json $OLLIE/a/new.json       # rename
rm $OLLIE/a/scratch.json                      # delete

Example shell session

$ echo "cwd=$PWD" > $OLLIE/s/new
$ ls $OLLIE/s/
new
1744276689123456789-2b986c
$ cd $OLLIE/s/1744276689123456789-2b986c
$ tail -f chat &
$ echo "list the go files in $PWD" > prompt
user: list the go files in /home/lkn/src/ollie
assistant: -> execute_code({"code":"find . -name '*.go'","language":"bash"})
= pkg/agent/core.go
  pkg/agent/loop.go
  ...
assistant: The Go source files are: core.go, loop.go, ...
$ cat state
idle
$ mv $OLLIE/s/1744276689123456789-2b986c $OLLIE/s/ollie-demo