recall

Claude Code starts every session cold. Recall keeps a local log of your sessions and condenses it into a resume-ready summary — entirely on your machine. No API key, no external model, nothing sent anywhere. It's built for people running Claude Code locally on a subscription: the only AI in the loop is Claude Code itself; the summarization is done by a classical Python summarizer.

Why Recall

• Free on your subscription. It solves the cold-start problem — no more re-explaining the project each session — without a metered summarizer running up a bill. The summary is a local algorithm, not an LLM call, so persistent memory costs you nothing beyond the subscription you already pay for.
• Saves your usage credits. Two ways: (1) the summary is built locally, so capturing and updating your memory spends zero model tokens; and (2) resuming from a compact context.md (~1–2K tokens) instead of re-explaining the project from scratch each session means far fewer tokens spent per session — stretching your subscription's usage limits (or, on the API, lowering billed credits).
• Nothing leaves your machine. Your transcripts (code, paths, sometimes secrets) are never sent to any API. Most "memory" tools pipe your context to a model endpoint; Recall makes a privacy guarantee they can't. See PRIVACY.md for the full policy.
• Zero-friction. No pip install, no local model to run, no key to configure, works offline. It starts working the moment the plugin loads.

Two files, written into your project under .recall/:

• history.md — the log. Append-only. Every session is captured here as it happens (your prompts, Claude's replies, the files touched and commands run).
• context.md — the summary. Overwritten by the local summarizer — the condensed "where are we right now" you load into the next session: goal, summary, next steps / open threads, files touched, and where you left off.

"Doesn't Claude Code already have memory?"

It does — and Recall is complementary, not a replacement. The built-in options solve different problems:

• CLAUDE.md (and the # shortcut) is hand-written memory: rules and notes you curate, loaded as instructions Claude follows. Great for "how I want you to work," but it's manual upkeep and it doesn't record what actually happened in a session.
• --continue / --resume replays a prior conversation — full fidelity, but it reloads the whole transcript (token-heavy) and is tied to your local session history on one machine, not a portable, readable digest.
• Context compaction condenses a conversation within a session; it isn't a durable record you reopen days later.

Recall fills the gap between these: an automatic, deterministic record of what each session did, condensed into a compact resume point.

	CLAUDE.md / #	--continue / --resume	Recall
What it is	Hand-written notes & rules	Reloads a prior conversation	Auto-captured session log + local summary
Upkeep	Manual	None (you pick the session)	None — written as you work
Holds	Instructions to follow	The full prior transcript	Goal, files, commands, where you left off, next steps
Cost to resume	Small	Large (replays full transcript)	~1–2K tokens (compact digest)
Form	Markdown you edit	Local session state	Plaintext in .recall/ — diffable & shareable
How Claude treats it	As instructions	As the conversation	Fenced as untrusted reference data

In short: CLAUDE.md is how I want you to work; Recall is here's what we did last time and where we stopped — produced offline, with no model tokens spent.

How it works

Moment	What happens
During the session	The Stop / SessionEnd hooks append new activity to .recall/history.md. Capture is incremental (only new turns) and fully local.
At session start	The SessionStart hook surfaces context.md and has Claude ask you two things: resume from the saved context? and keep logging this session?
Before you wrap up	You run /recall:save. The local summarizer reads history.md and (over)writes context.md.
…or automatically	Set auto_save_context: "on_end" and context.md regenerates every time a session ends — no /recall:save needed.

There is no LLM call anywhere — the summary is produced by TF-IDF + TextRank (extractive summarization) running locally.

The summarizer

scripts/summarizer.py ranks the most central sentences of your session:

1. TF-IDF sentence vectors
2. a cosine-similarity graph between sentences
3. TextRank — PageRank power iteration over that graph — to score sentences
4. the top N are kept in original order

context.md wraps that summary with deterministic facts pulled straight from the transcript and git: the goal (your first ask), files touched, commands run, where you left off, and git diff --stat.

No installs required. The whole TF-IDF + TextRank implementation is vendored in summarizer.py. If numpy happens to be importable it's used to vectorize the math (faster on big sessions); if not, an identical pure-Python TextRank runs instead. Same algorithm, same result — numpy is an optional accelerator, never a requirement. The save output tells you which path ran.

Commands

• /recall:save — run the local summarizer → (over)write context.md.
• /recall:show — print context.md.
• /recall:log — tail history.md.

Configuration — recall.config.json

Drop this in your project root to override defaults:

Key	Default	Purpose
output_dir	".recall"	Where history.md / context.md live.
capture_history	true	Append session activity to history.md.
auto_save_context	"off"	Regenerate context.md when a session ends: "off" or "on_end".
summary_sentences	8	How many sentences the summary keeps.
redact	true	Strip obvious secrets before writing the md files.
include_git	true	Add git diff --stat + recent commits to context.md.
max_input_chars	200000	Cap on text fed to the summarizer (oldest dropped).

Pause logging for a project without editing config: create .recall/.capture-paused. Delete it to resume.

Privacy & security

Recall makes no network calls, uses no API key, and loads no third-party model. The summarizer is local Python; the hooks are stdlib-only (numpy is an optional accelerator). It reads your session transcript and writes only under output_dir. Concretely:

• No credentials, ever. The plugin has zero references to API keys, auth, ANTHROPIC_*, or HTTP. If claude itself shows "Invalid API key", that's the CLI's own auth — usually a stale ANTHROPIC_API_KEY env var shadowing your subscription login. unset ANTHROPIC_API_KEY (or run env -u ANTHROPIC_API_KEY claude …). It has nothing to do with Recall.
• Redaction. A best-effort pass strips common secret shapes (API keys, tokens, .env assignments, PEM keys) before writing, since context.md / history.md may be committed. Best-effort, not a guarantee — review before committing.
• Hardened git. git diff/log are run with core.fsmonitor, diff.external, hooks, and the pager disabled, so an untrusted cloned repo can't use its own git config to execute code when Recall reads ground-truth. Set include_git: false to skip git entirely.
• Confined writes. output_dir is forced to stay inside the project; a project-shipped config can't redirect writes to an absolute path or ../...
• Scoped transcript. Recall only reads the transcript for the current project (matched by cwd); it never falls back to another project's sessions.
• Trust boundary for shared memory. context.md is injected into the model at session start. If you commit .recall/ as shared team memory, treat it like any other shared input: a teammate (or a bad actor with repo write access) could craft a context.md to attempt prompt-injection. SessionStart fences the content and labels it untrusted data, and Claude asks before relying on it — but if you don't fully trust who can write the repo, keep .recall/ git-ignored (the default).

Committing .recall/

Both are fine. Commit it for shared team memory, or git-ignore it for personal memory (.gitignore ships ignoring it by default — flip the comment to commit).

Install

From the marketplace (this repo is its own marketplace):

/plugin marketplace add raiyanyahya/recall
/plugin install recall@recall

Local dev (no install step):

claude --plugin-dir /path/to/recall

No pip install — the summarizer is vendored and stdlib-only (numpy used as an optional accelerator if present). Work a session, run /recall:save, and open a fresh session — Recall greets you with where you left off.

Other harnesses

Claude Code is Recall's first-class harness — the plugin install above is the primary, fully supported path, and nothing in this section affects it. But the memory Recall writes is plain markdown in .recall/, not harness state, so other coding agents can produce and consume the very same files. Harness support is always opt-in: nothing activates unless you explicitly set it up. A nice consequence: memory is shared across harnesses — a Claude Code user and an opencode user on the same repo write to the same history.md, and either side's context.md resumes the other's work.

OpenCode

How plugin installs work in opencode. Unlike Claude Code, opencode has no plugin marketplace and no in-CLI install command — there's no /plugin install to run inside it. Plugins are loaded from files and config: anything in a project's .opencode/plugins/ (or the global ~/.config/opencode/plugins/) is auto-loaded at startup, custom commands are markdown files in .opencode/commands/, and session-start context comes from the instructions list in opencode.json. Recall plugs into exactly those mechanisms — a small installer generates the files once, and opencode picks them up automatically from then on.

Set it up once per project — not per session, not per machine boot:

git clone https://github.com/raiyanyahya/recall ~/recall
python3 ~/recall/scripts/install.py --opencode --project /path/to/your/project

Keep the clone around — the generated plugin points at it. The only reason to ever re-run the installer is if you move the clone (or want to uninstall).

The installer writes exactly three things, all inside the target project:

File	Purpose
.opencode/plugins/recall.ts	the capture shim, auto-loaded by opencode at startup
.opencode/commands/recall-save.md	the /recall-save command
opencode.json	adds .recall/context.md to instructions

From then on, every session is automatic:

• At session start, opencode loads .recall/context.md (via instructions) — you resume where you left off, no re-explaining.
• After every turn (opencode's session.idle event), the shim appends new activity to .recall/history.md. It reads the session through opencode export — opencode's public CLI — never its internal storage.
• Before wrapping up, run /recall-save to regenerate context.md with the local summarizer — or set auto_save_context: "on_end" in recall.config.json and it regenerates after every turn on its own.

Same guarantees as the Claude Code path: fully local, no network, no API key; capture honors recall.config.json, .capture-paused, and redaction; any failure is a silent no-op so a session is never affected. Uninstall anytime with --opencode --uninstall (your .recall/ data stays), and the installer never overwrites or deletes a file it didn't generate.

Two differences from the Claude Code path to be aware of:

• Instructions, not fenced data. opencode loads context.md through its instructions mechanism, without the untrusted-data fencing the Claude Code SessionStart hook applies. If you commit .recall/ as shared team memory, only do so with collaborators you trust.
• Tracks opencode's public CLI (session list, export, the plugin events API), which is the stable surface — but opencode moves fast; if a release changes these, capture degrades to a silent no-op. File an issue.

Codex and others

Not supported yet. The adapter seam (scripts/harness_opencode.py, --harness on make_context.py) is where a new harness plugs in — contributions welcome.

Development

python -m venv .venv && . .venv/bin/activate
pip install pytest ruff bandit numpy   # numpy optional

ruff check scripts tests benchmarks    # lint
bandit -c pyproject.toml -r scripts    # security static analysis
pytest                                 # run the suite (also test without numpy)
python benchmarks/bench.py             # perf + quality numbers (human-readable)
python benchmarks/bench.py --check     # assert quality invariants (the CI gate)
claude plugin validate .               # official manifest validation

benchmarks/bench.py is a stdlib-only harness: alongside latency/throughput it scores the summarizer's salient-sentence selection against lead/tail/random baselines on a labeled fixture set and checks the numpy and pure-Python cores select the same sentences. --check gates those quality invariants (it never gates wall-clock timings). Redaction quality is covered by the unit suite (tests/test_redact.py), so no secret-shaped fixtures live in the benchmark.

CI (.github/workflows/) runs lint + Bandit, the test suite across Python 3.9–3.13 with and without numpy (both summarizer paths), the benchmark quality gate (both paths), CodeQL, secret scanning, and manifest JSON validation on every push and PR. See CONTRIBUTING.md and SECURITY.md.

Layout

recall/
├── .claude-plugin/plugin.json   # manifest
├── hooks/hooks.json             # SessionStart (ask/resume) · Stop+SessionEnd (capture)
├── commands/                    # /recall:save · show · log
├── scripts/
│   ├── summarizer.py            # vendored TF-IDF + TextRank (numpy optional)
│   ├── make_context.py          # build/overwrite context.md (--harness claude|opencode)
│   ├── capture.py               # append session activity to history.md
│   ├── session_start.py         # surface context + ask the start questions
│   ├── parse_transcript.py      # transcript → events + renderers
│   ├── harness_opencode.py      # opencode adapter (public CLI only) + opencode_capture.py
│   ├── install.py               # flag-based installer for opt-in harnesses (--opencode)
│   └── config.py · common.py · redact.py
├── integrations/opencode/       # generated-file templates (plugin shim, /recall-save)
├── tests/                       # pytest suite (summarizer, capture, security, …)
├── benchmarks/bench.py          # perf + quality harness (CI quality gate)
├── .github/                     # CI, CodeQL, secret scan, dependabot
├── recall.config.json        # config template / defaults
├── pyproject.toml               # ruff / pytest / bandit config (no runtime deps)
├── LICENSE · SECURITY.md · CONTRIBUTING.md
└── .gitignore

Contributing & issues

Bugs and ideas are welcome — open an issue (bug-report and feature templates provided) or a pull request. See CONTRIBUTING.md before submitting, and report security vulnerabilities privately per SECURITY.md rather than in a public issue.