Chronicle

The all-history knowledge graph for the synthetic sample workday that chronicle demo loads. No real screen data is shown.

Chronicle

Chronicle records your screen and system events, turns them into a knowledge graph, and serves that graph to LLM agents over MCP.

Agents usually start every task knowing nothing about your computer. They don't know which ticket you were on, which file you had open, or what you looked up ten minutes ago. So you end up pasting context in by hand. Chronicle keeps that memory locally and lets the agent ask for it:

• Pick up where you left off. "Finish the Acme export" works because the agent can see you were editing export.ts, that PR 882 is waiting on review, and what the export spec in Notion said.
• Teach by showing. Record yourself doing a task once, and the agent gets the apps, pages, and steps in order so it can repeat it.
• Hand context to tools that don't speak MCP. Export a recording as a Markdown context file, JSON, GraphML, or Cypher for ChatGPT or Claude Projects, NotebookLM, Neo4j, or a RAG pipeline.

Everything is stored in one local folder (~/.chronicle), with no account and no telemetry. The only data that leaves the machine goes to model providers you give a key to (see Privacy).

Quick start

Requires Python 3.10+. macOS is the main platform; Linux (X11) and Windows support is best effort.

uv tool install "chronicle-context[graph]"   # or: pipx install "chronicle-context[graph]"
chronicle demo                               # load a synthetic workday, so you can try it without recording
chronicle context "finish the Acme export"   # print what an agent would receive
chronicle mcp install cursor                 # or claude-desktop, claude-code, codex, vscode, gemini-cli, ...

chronicle context prints the same Markdown that the get_context MCP tool returns. On the sample workday it begins like this (trimmed):

# Computer context (Chronicle)
Task: finish the Acme export

## What you were doing
- 15:34-15:56 writing Acme Export spec · amount_usd (22m) [topic 1]
- 16:28-16:48 coding export.ts · amount_usd (20m) [topic 2]
- 16:50-17:02 coding Checks passed · Merge (12m) [topic 3]

## On screen now
- Chrome · Checks · PR 882 at Sun 16:50 (frame 18)
- URL: https://github.com/northwind/billing/actions
- Visible text: ... Merge is waiting on Priya's second review. Acme export is still due Friday.

## Knowledge graph (all)
- [topic] Acme export (`topic:acme-export`, 1h58m, frames 18, 16, 13)
- [pr] PR 882 (`pr:882`, 2h42m, frames 18, 17, 16)
- [file] export.ts (`file:export.ts`, 1h48m, frames 17, 11, 6)
- [person] Maya Chen (`person:maya-chen`, 2h28m, frames 16, 14, 12)

To record your own work, run chronicle doctor to check permissions, then chronicle record 30m or chronicle serve and use the UI at http://127.0.0.1:3030.

Permissions and platform tools

• macOS: grant Screen Recording and Accessibility, under System Settings › Privacy & Security, to whatever runs Chronicle: your terminal, or the MCP host app such as Claude Desktop or Cursor. Browser URLs need a one-time Automation prompt per browser. Supported browsers are Safari, Chrome, Arc, Brave, Edge, Vivaldi, and Opera.
• Linux: needs xdotool and xprop. For screenshots install one of grim, gnome-screenshot, scrot, or ImageMagick import. Add xclip or wl-paste for the clipboard and xprintidle for idle time.
• Windows: reads the window, idle time, screenshots, and clipboard through user32 and PowerShell.
• OCR (optional): brew install tesseract or apt install tesseract-ocr.

The only required dependencies are FastAPI and uvicorn. The graph extra adds scikit-learn and scipy for better duplicate merging, and llm adds the OpenAI SDK and python-dotenv.

How it works

Record. A session runs for a set duration (90s, 30m, 2h) or until stopped. Every 5 seconds by default, the recorder samples the front app and window, the browser URL and tab title, and a screenshot. It also logs the system events app_switch, window_focus, url_change, clipboard, idle_start/idle_end, and session_start/session_stop. Screen text comes from the macOS Accessibility tree, and from tesseract OCR on the screenshot when an app exposes no text. Keystrokes are never recorded. Password managers, System Settings, and private browsing windows are skipped, and emails, API keys, JWTs, and card numbers are redacted before anything is written.

Build the graph. Each session gets its own graph shard. The shard is extended while recording and rebuilt once when the session ends, and frames captured outside a session go into hourly shards. The all-history graph is a SQL aggregation over the shards in which older shards count less (72-hour half-life by default). That keeps it focused on current work, and deleting a session just drops its shard.

• Nodes: apps, windows, sites, pages, search queries, topics, files, tickets (BILL-142), PRs, code identifiers, people, projects, customers, meetings, sessions, and tasks. Topics are keyphrases such as "Acme export", scored by frequency, spread, casing, position, and dwell time. Tasks are activity segmented by topic.
• Edges: has_window, visited, on_site, shows, searched, about, co_occurs, switched_to and then (workflow transitions), spoke_in, discussed, copied, typed (text pushed through POST /add), and captured.

Every node and edge records the time spent on it and the frames it came from, so an agent can cite its evidence. If an OpenAI key is available, a model also refines each recording when it ends (see LLM refinement).

Serve. get_context(task) returns a context pack with these parts:

• the current screen;
• recent activity blocks and system events;
• habitual app transitions;
• the subgraph relevant to the task;
• cited frames.

Agents then drill down with query_graph, get_entity, search_history, and get_frame, which can return the screenshot itself.

Connect an agent

Packaged installs

These need uv on the PATH. Each runs uvx chronicle-context mcp and tells the model to call get_context before acting.

• Claude Code, Claude Desktop, Cowork: claude plugin marketplace add aniketxdey/chronicle, then claude plugin install chronicle@chronicle.
• Gemini CLI: gemini extensions install https://github.com/aniketxdey/chronicle.
• MCP Registry clients: search for io.github.aniketxdey/chronicle.

Local clients (stdio)

chronicle mcp install <client> merges the server into the client's config and keeps a .chronicle-backup copy of the old file. chronicle mcp config <client> prints the snippet instead, and chronicle mcp clients lists them all.

For any other client:

{ "mcpServers": { "chronicle": { "command": "chronicle", "args": ["mcp"] } } }

A stdio server can record on its own. Only one Chronicle process captures at a time: whichever holds ~/.chronicle/capture.lock. So an agent can call start_recording without chronicle serve running. Pass --no-record to turn this off.

Hosted agents and model APIs (Streamable HTTP)

chronicle serve exposes MCP at POST /mcp and supports protocol versions 2025-06-18, 2025-03-26, and 2024-11-05. Hosted agents need a public HTTPS URL, so put it behind a tunnel and set a token:

export CHRONICLE_TOKEN=$(openssl rand -hex 16)
export CHRONICLE_PUBLIC_URL=https://<your-tunnel-host>
chronicle serve &
cloudflared tunnel --url http://127.0.0.1:3030    # or ngrok, tailscale funnel
# MCP URL: $CHRONICLE_PUBLIC_URL/mcp/$CHRONICLE_TOKEN, or /mcp with "Authorization: Bearer $CHRONICLE_TOKEN"

With a token set, every route except the UI shell and /health requires it. Open the UI once with ?token=… and it remembers the token. Requests with a non-local Origin header are rejected.

• ChatGPT (Settings › Connectors › Developer mode › Create): paste the /mcp/<token> URL with no authentication. The search and fetch tools return the shapes that connectors and deep research expect.
• OpenAI Responses API: tools=[{"type": "mcp", "server_label": "chronicle", "server_url": URL, "require_approval": "never"}]. See examples/openai_responses.py.
• Anthropic Messages API (MCP connector beta mcp-client-2025-04-04): mcp_servers=[{"type": "url", "url": URL, "name": "chronicle"}], alongside the computer-use tool. See examples/anthropic_computer_use.py.
• Gemini API (google-genai): pass an MCP ClientSession connected to chronicle mcp as a tool. chronicle mcp config gemini-api prints the snippet.
• Anything else: chronicle mcp config http prints a curl call.

Provider model names and beta flags change often, so treat these snippets as starting points and check the provider's MCP docs.

MCP tools

Resources: chronicle://context/current, chronicle://graph/summary, chronicle://sessions, and the templates chronicle://context/session/{id} and chronicle://frame/{id}.

Prompts: use_my_computer_context(task), and learn_from_recording(session_id), which turns a recorded demonstration into steps an agent can repeat:

chronicle record 5m --label "file an expense report"   # do the task once
chronicle context --session 1                          # check what the agent will see

Then ask the agent: "Use the learn_from_recording prompt for session 1 and do it again for this receipt."

Web UI and REST API

chronicle serve runs the UI at http://127.0.0.1:3030:

• Home: recent recordings with their top apps, tasks, and topics, plus time per app over the last week.
• Record: start a timed recording and see what this machine can capture.
• Contexts: each recording, all history, or a new context generated from a task, time range, or recording. A context shows context files for eight kinds of work (general, data analysis, job applications, coding, research, writing, meeting follow-up, customer work), meetings, the knowledge graph, a timeline of frames and events, and search.
• Workflows: repeated loops found across recordings, and scheduled pipes.
• Integrations: MCP client setup and file exports.

The REST API is documented at http://127.0.0.1:3030/docs. The most useful routes:

CLI

chronicle serve [--host --port]                       web UI, REST API, and HTTP MCP
chronicle record <duration> [--label --interval --detach]
chronicle stop [id] · chronicle sessions
chronicle graph build|show|find|node|export [--session N]   (build --full re-extracts every shard)
chronicle graph tasks [--session N --since "2h ago" --json]
chronicle graph merges [--session N --threshold --json]     (near-duplicate nodes the build merges)
chronicle graph tune [--session N --rounds 2 --force --reset]
chronicle context [task] [--minutes N --session N --json]
chronicle mcp [stdio|clients|config <client>|install <client> [--path --dry-run]]
chronicle search <q> · chronicle ask <question> · chronicle status · chronicle doctor · chronicle demo

Configuration

Capture interval, idle threshold, screenshots, OCR, clipboard, redaction, and retention are settings, edited in the UI or through POST /settings. Two settings mirror environment variables: graph_half_life_hours overrides CHRONICLE_HALF_LIFE_HOURS, while CHRONICLE_LLM takes precedence over llm_provider.

LLM refinement

The heuristic graph knows apps, pages, tickets, files, and identifiers, but it can't tell that "Crusoe" is a company or that a page is a job posting. When an OpenAI key is available, a model refines the graph and writes the context files. Without a key, Chronicle runs fully offline: the graph stays heuristic and context files are assembled from the recording directly.

uv tool install "chronicle-context[graph,llm]"
echo "OPENAI_API_KEY=sk-..." >> ~/.chronicle/.env
chronicle graph tune --session 1    # runs automatically when a recording ends
chronicle graph show --session 1    # activities and typed relations are listed first

The key can also come from the environment, a .env in the current directory, or an OpenAI key saved in Settings for Ask. A .env never overrides variables that are already set. Settings › LLM refinement or CHRONICLE_LLM=off turns refinement off. GET /llm/status reports the provider and model in use and the last error.

Graph patches. The model reads the heaviest nodes along with their evidence: window titles, URLs and search queries, redacted screen text, and dwell time. It replies through strict function calls: add_entity, retype_node, rename_node, merge_nodes, add_relation, add_trait, set_activity, and drop_node. add_relation supports is_a, part_of, works_on, competes_with, located_in, researching, mentions, listed_in, uses, and related_to.

• Each op is validated against the schema and the node ids that exist at that point. Rejected ops go back to the model in the next round. A run makes up to --rounds passes (default 2) and stops early when nothing new is proposed.
• Accepted ops are stored in kg_llm_patches and replayed after every rebuild, so refinement survives graph build. --reset removes them.
• Model-made nodes and edges carry source: "llm", and relations carry a confidence and an evidence quote. get_context lists activities first, then relations such as Crusoe —is_a→ company.

Context files. For each of the eight presets, the model writes a document with the sections that kind of work needs and an "Open threads" list, citing frames. The evidence it was given is appended under "Recorded evidence".

Caching and failures.

• Responses are cached by a hash of the prompt and model, and a scope whose graph hasn't changed is skipped unless you pass --force.
• Rate limits, timeouts, and API errors are tried up to three times. An account with no credits fails on the first call.
• Errors are recorded in last_llm_error and never stop a recording. A failed context file falls back to the offline version.

Other providers can be added with chronicle.llm.register(name, factory). A provider implements call_tools(system, user, tools) -> [{"name", "arguments"}] and complete(system, user) -> str.

Privacy

Recordings, screenshots, and the graph stay in CHRONICLE_HOME. Data leaves the machine in three cases:

• MCP clients: an agent you connect receives the tool results it asks for.
• LLM refinement: when it's enabled, window titles, URLs, and redacted screen text are sent to OpenAI.
• Ask: chronicle ask and the Ask box send the matching history to the provider you configure in Settings.

PRIVACY.md has the details.

Development

git clone https://github.com/aniketxdey/chronicle && cd chronicle
uv pip install -e ".[dev,graph,llm]"
pytest
python examples/stdio_client.py "finish the Acme export"
npx @modelcontextprotocol/inspector --cli chronicle mcp --method tools/list

Releases are described in docs/PUBLISHING.md. The OSWorld benchmark harness is in bench/, and bench/PROTOCOL.md describes the evaluation. It hasn't been run yet, so there are no results.

License

MIT