Daimon
Your AI coding agent forgets everything between sessions. Daimon writes a small cognitive checkpoint when a session ends, then renders a "while you were away" briefing when the next one starts — so the agent resumes from a faithful record of where you left off instead of a confident guess. Everything runs locally: per-project JSON checkpoints plus a derived SQLite index, no server, no external memory backend.
Every briefing item carries a trust class. ✓ verbatim items are pinned to an exact
quote from the transcript and are never reworded. ~ inferred items are the agent's
own conclusions and are allowed to evolve. Items carried from older sessions are
tagged [carried]. Knowing which memories are quotes and which are guesses is the
whole point.
Install
pip install daimon-briefing
# or, as an isolated tool:
uv tool install daimon-briefing
Add the [pretty] extra for rich tables and panels in status/brief
(plain text works without it):
uv tool install 'daimon-briefing[pretty]'
The installed command is daimon. Requires Python 3.10+, stdlib-only at runtime.
Connect an LLM (one time)
Writing a checkpoint needs an LLM endpoint. If the claude CLI is on your PATH you
are zero-config — daimon configure prints ✓ ready and you are done. Otherwise
point it at any OpenAI-compatible endpoint:
daimon configure --backend litellm \
--base-url https://generativelanguage.googleapis.com/v1beta/openai \
--api-key <YOUR-KEY> --model gemini-2.5-flash
daimon configure --test # send one tiny prompt and confirm the backend works
Or point it at a headless LLM CLI you already have installed:
daimon configure --backend command --command "mycli -p"
Some CLIs don't read the prompt from stdin — the Devin CLI takes it as a flag
pointing at a file. --input controls how the prompt reaches the command
(stdin default, arg appends it as the final argument, file:<flag>
writes it to a tempfile and passes <flag> <path>):
daimon configure --backend command --command "devin -p" --input "file:--prompt-file"
Config lives in ~/.daimon/env (hooks run with the host's inherited environment, not
your shell profile). Kill switch: DAIMON_DISABLE=1.
Hook up your host
Claude Code (plugin — recommended):
/plugin marketplace add Daily-Nerd/daimon
/plugin install daimon@daimon
The plugin registers the SessionStart/SessionEnd hooks itself.
Windsurf (and other hosts that ship packaged hooks):
daimon hooks install windsurf # copies the hook script + prints the registration snippet
daimon hooks list # hosts with packaged hook scripts
Codex and other hosts use the manual hook installer from a repository clone — see the GitHub docs.
Then end a session → a checkpoint is written; start the next → the briefing appears.
Quickstart without a host
The CLI also works on any plain-text or markdown transcript, no host required:
daimon serialize path/to/transcript.md # transcript → checkpoint
daimon brief # render the "while you were away" briefing
daimon status # did the last checkpoint get written?
Teach your agent the protocol
Hooks capture your sessions; the skill teaches the agent on the other side to read the
briefing at session start and treat verbatim items as immutable quotes:
daimon skill install claude # also: codex, windsurf, cursor, gemini
daimon skill list # which scopes each host supports
Commands
| Command | What it does |
|---|---|
daimon brief |
Render the "while you were away" briefing from the latest checkpoint |
daimon status |
Checkpoint presence/age + last capture outcome; reports failures honestly |
daimon recall <terms> |
Full-text search over your whole checkpoint history |
daimon resolve <item> |
Mark a checkpoint item resolved so it stops carrying forward |
daimon reverify <item> |
Evidence-gated reopen of a resolved item |
daimon refute <action> |
Author, ratify, search, guard, revise, or overturn scoped negative knowledge |
daimon heal [--force] |
Re-serialize the most recent failed session, if it can be done safely; --force ignores a prior retry marker to re-heal a retry-exhausted session |
daimon stats |
Local usage + capture aggregates (nothing is transmitted) |
daimon configure |
Detect/repair the LLM backend |
daimon hooks install <host> |
Install packaged host hook scripts |
daimon skill install <host> |
Install the agent skill for a host |
Run daimon --help or daimon <command> --help for the full surface, including
code anchors (daimon anchor) and opt-in team memory (daimon team).
Docs
Full documentation, architecture, and the research trail live in the GitHub repository: https://github.com/Daily-Nerd/daimon
License: Apache-2.0 · Org: Daily-Nerd
1 maintainer
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