opencomputer 2026.4.26.post3

Personal AI agent framework — plugin-first, self-improving, multi-channel

OpenComputer

A personal AI agent framework — plugin-first, self-improving, multi-channel.

A synthesis of the best ideas from Claude Code, Hermes Agent, OpenClaw, and Kimi CLI.

What it does

• Chat agent with tool calling (file ops, bash, grep, glob, subagents, skills).
• Three-pillar persistent memory: declarative (MEMORY.md), procedural (skills/), episodic (SQLite + FTS5 full-text search).
• Self-improvement loop: the agent saves complex workflows as skills that auto-activate next time.
• Strict plugin SDK boundary: third-party plugins never import core internals, so the core can evolve without breaking plugins.
• Multi-channel gateway: run as a daemon; chat via Telegram and Discord today, Slack coming.
• Multiple providers: Anthropic (native + proxy-compatible), OpenAI, any OpenAI-compatible endpoint (OpenRouter, Ollama, etc.).
• MCP integration: plug in any Model Context Protocol server — its tools become native tools.

Status

Pre-alpha (0.1.0). Core architecture stable. 114 tests passing. Adding features incrementally.

Install

Requires Python 3.13+.

One-line install (macOS / Linux / Termux):

curl -fsSL https://raw.githubusercontent.com/sakshamzip2-sys/opencomputer/main/scripts/install.sh | bash

The installer auto-detects pipx / pip --user / venv and falls back gracefully on PEP 668 ("externally managed") Python distributions. Pass --dry-run to preview, --dev to install from a local clone in editable mode, --use-pipx to force pipx.

Manual install:

pip install opencomputer

For development

git clone https://github.com/sakshamzip2-sys/opencomputer.git
cd opencomputer
python3 -m venv .venv
source .venv/bin/activate
pip install -e ".[dev]"

Quickstart

# 1. Run the setup wizard — picks provider, saves config
opencomputer setup

# 2. Export your API key (setup tells you which)
export ANTHROPIC_API_KEY=sk-ant-...
# or: export OPENAI_API_KEY=sk-...

# 3. Verify the install
opencomputer doctor

# 4. Chat
opencomputer

Commands

opencomputer                 # start a chat session (alias for `chat`)
opencomputer chat            # interactive REPL with tools
opencomputer gateway         # run the daemon — listens on configured channels
opencomputer search QUERY    # full-text search past conversations
opencomputer sessions        # list recent sessions
opencomputer skills          # list available skills (bundled + user)
opencomputer plugins         # list installed plugins
opencomputer setup           # first-run wizard
opencomputer doctor          # diagnose config/env issues
opencomputer config show     # print effective config
opencomputer config get KEY  # read one config value (e.g. model.provider)
opencomputer config set KEY VALUE

Coding mode

OpenComputer ships with a coding-harness plugin that turns the agent into a coding agent. v2 adds Kimi-style content-hashed checkpoints + rewind, Claude-Code-style hook events, permission scopes, in-chat slash commands, and auto-activating skills.

How it works (the mental model)

You don't invoke plugins directly. You chat with the agent; the agent chooses tools the harness has registered. Your job is to describe a task — "fix this bug", "add a test for X", "refactor this function" — and the agent picks the right tool (Edit, MultiEdit, RunTests, …) from the harness's capability set. Slash commands are the one exception: /plan, /undo, etc. execute directly and deterministically.

List what's installed with opencomputer plugins.

Tools the harness adds

Tool	What it does
Edit, MultiEdit	Precise string-replace edits. Fail-closed if target isn't unique.
TodoWrite	Create / update a harness-managed skill in-session.
StartProcess / CheckOutput / KillProcess	Run long-lived processes (dev servers, watchers) and poll them asynchronously.
Rewind	Restore files to a previous checkpoint (steps=N, checkpoint_id=..., or list_checkpoints=true).
Diff	Unified diff between the working tree and the most recent checkpoint.
RunTests	Auto-detect pytest / vitest / jest / cargo / go; run and surface results.

Modes

Every mode is a DynamicInjectionProvider that conditionally appends guidance to the system prompt. Plan mode also registers a PreToolUse hook that hard-blocks Edit / Write / Bash — belt + suspenders.

opencomputer chat --plan       # describe what you'd do; destructive tools refused

/plan              # toggle plan mode on mid-session
/plan-off          # turn it off
/accept-edits      # auto-accept minor edits (use /undo to revert)
/accept-edits off  # explicit off

Subagents spawned via delegate inherit the parent's mode flags through RuntimeContext.

Checkpoints + Rewind

The harness snapshots every tracked file before each destructive tool call via a PreToolUse hook. Snapshots are content-hashed, stored at ~/.opencomputer/harness/<session_id>/rewind/<checkpoint_id>/, and shielded from Ctrl-C (can't corrupt mid-save).

/checkpoint before-refactor   # manual named snapshot
/undo                         # rewind the last checkpoint
/undo 3                       # rewind 3 checkpoints back
/diff                         # unified diff vs latest checkpoint
/diff <checkpoint_id>         # diff against a specific snapshot

Subagents get their own isolated checkpoint store keyed on subagent_id, so a reviewer subagent's edits never pollute your /undo chain.

Permission scopes

A scope-check hook refuses destructive tool calls against paths outside your workspace (/etc/**, /sys/**, /var/log/**, …) and dangerous Bash commands (rm -rf /, fork bombs, dd if=*, …). Defaults live in extensions/coding-harness/permissions/default_scopes.py.

Skill auto-activation

Bundled skills (extensions/coding-harness/skills/<name>/SKILL.md) carry YAML frontmatter with a description: that's matched against your last message. If ≥ 2 tokens overlap, the full SKILL.md body is injected into this turn's system prompt — no manual invocation needed.

Skill	Triggered by
code-reviewer	"review this PR", "code review", "check my diff"
test-runner	"run the tests", "pytest", "verify the build"
refactorer	"refactor", "clean up", "extract a function"

Add your own by dropping a SKILL.md in skills/<your-name>/.

Remove the harness

Remove or rename extensions/coding-harness/ to opt out. The core agent stays fully functional — it's a pure chat agent without the harness. Plugins are additive.

Memory

OpenComputer remembers what matters across sessions. Three pillars, all on by default, zero API keys needed:

Declarative — ~/.opencomputer/MEMORY.md

Agent observations, learned conventions, project facts. The agent curates this via the Memory tool (add/replace/remove/read). You can also hand-edit it with any text editor.

User profile — ~/.opencomputer/USER.md

Your preferences: communication style, workflow habits, expectations. Kept separate from MEMORY.md so agent-learned observations don't muddle your own preferences.

Episodic — SQLite + FTS5

Every message is indexed. The agent searches prior conversations via the SessionSearch tool, and you can too from the CLI.

CLI commands

opencomputer memory show               # print MEMORY.md
opencomputer memory show --user        # print USER.md
opencomputer memory edit [--user]      # open in $EDITOR
opencomputer memory search "kafka"     # FTS5 search across all sessions
opencomputer memory stats              # chars used / limits / backup age
opencomputer memory prune              # clear MEMORY.md (keeps .bak)
opencomputer memory restore            # promote .bak back to live

Safety

Every write is atomic (temp file + os.replace) and locked (fcntl on Unix, msvcrt on Windows). Every mutation backs up the current state to <file>.bak first. Character limits (4000 for MEMORY.md, 2000 for USER.md by default) prevent unbounded growth; over-limit writes return an error with a hint.

Deeper memory — Honcho is now the default overlay

A MemoryProvider plugin interface layers deeper cross-session understanding on top of the always-on baseline (MEMORY.md + USER.md + SQLite FTS5). As of Phase 12b1, Honcho is the default provider when Docker is available — the setup wizard detects Docker, pulls the image, and brings up the 3-container stack (api + postgres+pgvector + redis + deriver) automatically. No prompt, no opt-in toggle.

When Docker is not installed, the wizard prints a one-line notice with the Docker install URL and persists provider="" so subsequent runs don't retry. Baseline memory keeps working — you just don't get the semantic/dialectic overlay.

opencomputer memory doctor      # 5-layer health report: baseline / episodic / docker / honcho / provider
opencomputer memory setup       # bring the Honcho stack up manually (idempotent)
opencomputer memory status      # just the Honcho stack (compose ps)
opencomputer memory reset       # blow away the stack + data

The agent loop passes RuntimeContext.agent_context through to the provider. Context "chat" (default) injects Honcho's recall into the per-turn system block (the frozen snapshot is NOT modified, preserving the Anthropic prefix cache) and calls sync_turn after each response. Context "cron" or "flush" short-circuits both — batch jobs don't spin the external stack.

Alternative providers (Mem0, Cognee, etc.) can be selected by editing ~/.opencomputer/config.yaml field memory.provider. Only one provider is active at a time. See docs/plugin-authors.md when present.

Profiles

One user, many personas. A profile is a separate data dir with its own memory, config, and plugin selection. Switch with -p:

opencomputer                     # default profile (~/.opencomputer/)
opencomputer -p coder            # ~/.opencomputer/profiles/coder/
opencomputer -p stocks           # ~/.opencomputer/profiles/stocks/

Each profile has its own MEMORY.md, USER.md, config.yaml, sessions.db, skills/, and plugins/. The agent cannot see across profiles.

Managing profiles

opencomputer profile list                        # table of all profiles + active marker
opencomputer profile create coder                # creates ~/.opencomputer/profiles/coder/
opencomputer profile create coder2 --clone-from coder          # copy config from coder
opencomputer profile create staging --clone-from coder --clone-all  # full copy
opencomputer profile use coder                   # set sticky default (no -p needed after)
opencomputer profile rename coder coder-main     # move directory + update sticky
opencomputer profile delete staging --yes        # remove
opencomputer profile path [<name>]               # print the filesystem path

The sticky active profile lives in ~/.opencomputer/active_profile. -p <name> always overrides the sticky for one invocation.

Presets and workspace overlays (plugin activation)

Each profile's profile.yaml controls which plugins to load. Two shapes:

# Option A: reference a named preset
preset: coding

# Option B: explicit list (mutually exclusive with preset)
plugins:
  enabled: [anthropic-provider, coding-harness]

Named presets live in ~/.opencomputer/presets/<name>.yaml:

opencomputer preset create coding --plugins anthropic-provider,coding-harness,dev-tools
opencomputer preset list
opencomputer preset edit coding
opencomputer preset show coding
opencomputer preset where coding

Per-project overrides via .opencomputer/config.yaml walked up from CWD:

# ./my-project/.opencomputer/config.yaml
preset: coding
plugins:
  additional: [extra-tool]   # unions into the preset

The walk stops before $HOME/.opencomputer/config.yaml (that's the agent's main config, not an overlay).

Plugin install / uninstall

Custom plugins can live in two places:

# Profile-local (default) — only this profile sees it
opencomputer plugin install ./my-tool                       # → <active profile>/plugins/
opencomputer plugin install ./my-tool --profile coder       # → explicit profile

# Global — all profiles see it
opencomputer plugin install ./my-tool --global              # → ~/.opencomputer/plugins/

opencomputer plugin uninstall my-tool --yes
opencomputer plugin where my-tool                            # print filesystem path

Discovery order: profile-local → global → bundled. Profile-local shadows global shadows bundled on id collision.

Plugins can declare compatibility in their manifest:

{
  "id": "coding-harness",
  "profiles": ["coder", "default"],
  "single_instance": false
}

• profiles: ["*"] (or omitted) means "any profile" — default.
• profiles: ["coder"] skips the plugin in any profile not named "coder".
• single_instance: true (for plugins owning a bot token, etc.) is enforced at load time via an atomic PID lock at ~/.opencomputer/.locks/<plugin-id>.lock. A second profile attempting to load the same plugin raises SingleInstanceError; stale locks from crashed processes are detected via os.kill(pid, 0) and atomically stolen.

Known limitations

These are current edge cases. Each has a planned fix; the workaround below is the officially-supported approach until that fix ships.

• Single-instance channels across profiles. Bundled channel plugins (Telegram, Discord) hold a single bot token each; the Bot APIs don't support multiple pollers on one token. Set single_instance: true in the plugin manifest (Telegram/Discord already do) and core enforces the constraint with an atomic PID lock — the second profile that tries to load the same plugin fails fast with SingleInstanceError, and PluginRegistry.load_all logs a WARNING and continues loading the rest of the registry. Crashed-process locks are detected and stolen atomically on the next load attempt.

• Cloud-synced ~/.opencomputer/. SQLite's WAL mode does not compose with file-sync tools (Dropbox, iCloud Drive, Syncthing, OneDrive). If your home directory syncs, add ~/.opencomputer/ (or at minimum ~/.opencomputer/sessions.db*) to your sync tool's ignore list or you will silently corrupt your session history. MEMORY.md and USER.md are safe to sync; sessions.db* are not. Planned fix: 14.I automatic sync-ignore marker seeding.

• Honcho host key per profile. Fixed in 14.J — each profile now gets its own Honcho AI peer model (opencomputer.<profile>). The default profile uses the bare opencomputer host key.

Messaging channels

Telegram

1. Message @BotFather → /newbot → get a token
2. export TELEGRAM_BOT_TOKEN=123:ABC...
3. opencomputer gateway — the bundled Telegram plugin auto-connects
4. DM your bot on Telegram

MCP servers

Plug any MCP server into OpenComputer. Edit ~/.opencomputer/config.yaml:

mcp:
  servers:
    - name: my-server
      transport: stdio
      command: python3
      args:
        - /path/to/mcp_server.py
      enabled: true

The server's tools become available to the agent on next run (namespaced my-server__tool_name).

Architecture

opencomputer/   (core — agent loop, state, memory, tools, hooks, gateway, plugin discovery)
plugin_sdk/     (public contract — stable types plugins import)
extensions/     (bundled plugins — telegram, discord, anthropic-provider, openai-provider, coding-harness)

Key design rule: extensions import only from plugin_sdk/*, never from opencomputer/*. The core can be refactored freely without breaking plugins.

Writing a plugin

Plugins are separate folders with a manifest and an entry module. Minimal channel plugin:

extensions/my-channel/
├── plugin.json           # { "id": "my-channel", "version": "0.1.0", "entry": "plugin", "kind": "channel" }
├── plugin.py             # exports register(api) — registers the adapter
└── adapter.py            # your BaseChannelAdapter subclass

See extensions/telegram/ for a working reference.

License

MIT — see LICENSE.md.

Credits

Architectural ideas synthesized from:

• Claude Code — plugin primitives vocabulary (commands/skills/agents/hooks/MCP), lifecycle events
• Hermes Agent — Python core patterns, three-pillar memory, agent loop shape
• OpenClaw — plugin-first architecture, manifest-first discovery, strict SDK boundary
• Kimi CLI — dynamic injection, fire-and-forget hooks, deferred MCP, wire-protocol UI decoupling