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AgentRecall-X

Correction-first persistent memory for AI agents. MCP server + SDK + CLI. Compounds across sessions.

Goldentrii/AgentRecall-Xcommunitylistedunreviewed

Set up

Skills are installed by placing their folder where your agent loads skills.

The download comes from github.com/Goldentrii/AgentRecall-X itself, not from our server, so what you get is exactly what its author published.

Install instructions come from the README

Skills do not use an MCP config. Follow the steps in the README below.

README

synced Oct 17, 2026

English · 中文

claude mcp add --scope user agent-recall -- npx -y agent-recall-mcp

1. Install

claude mcp add --scope user agent-recall -- npx -y agent-recall-mcp

Other MCP clients: { "mcpServers": { "agent-recall": { "command": "npx", "args": ["-y", "agent-recall-mcp"] } } }

2. Tell your human, in one breath

"I installed AgentRecall. From now on, when you correct me, I save it as a rule on your disk — plain markdown in ~/.agent-recall/, nothing leaves the machine. Next session I load those rules before I start, so you shouldn't have to say the same thing twice. Say 'save' anytime and I'll checkpoint."

3. Run this loop yourself

On session start                  → call session_start (before you act)
When the human corrects you       → call remember with type "correction" — saying "noted" is not saving
Before publish/push/deploy/delete → call check with action_description; obey verdict "blocked"
When past context would help      → call recall
On "save" / "remember" / exit     → call session_end

4. Don't

  • Don't claim you'll remember something without calling a tool.
  • Don't paste the whole memory back to the human — surface only what changes the next action.
  • Don't store secrets, tokens or credentials.

Contents

The problem

You tell your agent "don't bump the version without asking." It apologizes, fixes it, and the session ends. Next week a fresh session does it again — the correction lived in a chat log nobody reads.

AgentRecall turns that sentence into a structured, persistent rule, puts it in front of the next agent before it acts, and records whether the mistake came back.

── session 3 ─────────────────────────────────────────────
you   › no — never bump the version without asking me first
agent › remember(type: "correction")
        ✓ saved · severity p0 · applies_when: [release, npm]

── session 9 · new agent, no chat history ───────────────
session_start › project "my-app" · 1 critical correction
                watch_for: version bump → ask the owner first
you   › ship the fix
agent › Fix is merged. Want me to bump to 1.4.1, or leave the version?
        outcome recorded: heeded

Illustrative transcript.

What it does

AgentRecall is two things:

  1. A governed corrections ledger. Every correction ("not that version", "put this section first", "ask before you assume") becomes a structured record — severity, evidence, applies_when, retraction, outcome — that persists across sessions, projects and agent restarts. Export format: corrections-export/v1, scrubbed on egress.
  2. A measurement instrument. Each correction accumulates retrieved_count, and every time the agent meets the same situation the outcome is logged as heeded or recurred. No public benchmark measures that step; we built the harness first and publish what it finds, including the unflattering numbers.

The session loop

flowchart LR
    A([session start]) --> B["/arstart · session_start<br/>load rules + context"]
    B --> C{work}
    C -->|need past knowledge| D["/arrecall · recall"]
    D --> C
    C -->|corrected| R["remember<br/>type: correction"]
    R --> L[(corrections<br/>ledger)]
    C -->|risky action| K["check"]
    L -.-> K
    C --> E["/arsave · session_end<br/>journal + compound"]
    E --> F([session end])
    L -. watch_for .-> B
    F -. every K sessions .-> G["/arreflect<br/>consolidate"]
    G -.-> A
CommandWhenWhat it does
/arstartFirst — every sessionOPEN. No args → status board across all projects → pick → load that project's rooms, corrections and task recall. /arstart <slug> loads directly; /arstart bootstrap imports existing projects.
/arsaveLast — every sessionSAVE. Journal + palace consolidation + awareness compounding. /arsave all merges every parallel session of the day.
/arrecallMid-sessionSEARCH. Prior fixes, decisions, patterns for the current task.
/arreflectEvery K sessionsCONSOLIDATE. Confirm recurrences, cluster new error classes, propose rule re-abstractions (rule edits stay owner-gated).

Without /arstart, a fresh agent has zero orientation. Without /arsave, nothing compounds.

MCP tools

Five tools ship by default. Each description is written for the agent and says when to call it.

ToolCall itWhat it does
session_startFirst, before actingLoads corrections, insights and watch_for warnings for the project
rememberThe moment something is decided or correctedSaves one fact; auto-routes to journal / palace room / corrections / awareness
recallWhenever past context would helpRanked search across every store (RRF), with useful feedback that re-weights future ranking
checkBefore risky or irreversible actionsMatches the plan against known corrections; returns verdict: "blocked" when one overrides it
session_endOn save / exitWrites the journal, promotes insights, records trajectory, optionally opens/closes a pipeline phase
SurfaceEnableTools
Default—the 5 above
Fullnpx -y agent-recall-mcp --full+ check_action (pre-action matcher for publish / push / deploy)
Extras--full + AR_EXTRAS=1+ pipeline_open · pipeline_close · pipeline_list · pipeline_current · pipeline_show · register_rule · digest

List what your install exposes: npx -y agent-recall-mcp --list-tools.

[!IMPORTANT] The Automaticity Law — why only 5. Memory only compounds if it fires without being asked. Across 44 projects and weeks of real use, the pull tools (recall, memory_query) saw zero organic calls — including from the agent that built them. Push channels (session_start, session_end, correction hooks) are what change behavior. Every extra default tool costs definition tokens every session for no return. (Self-measured on the owner's store, 2026-06-12.)

So on Claude Code, wire the hooks — the loop then runs without agent discipline:

ar hook-start        SessionStart      load context, show watch_for warnings
ar hook-correction   UserPromptSubmit  capture corrections silently
ar hook-ambient      UserPromptSubmit  inject relevant memories (≥2-word overlap floor)
ar hook-save         UserPromptSubmit  "save"/"retain" → prompt session_end
ar hook-pretool      PreToolUse        warn on npm publish, git push, rm -rf, deploy, DROP TABLE
ar hook-end          SessionEnd        auto-save journal if not saved today
ar health            —                 recent hook failures (fail-loud)

The nature of memory — 5 layers

The cognitive-psychology taxonomy, mapped to plain files. Each layer forgets at a different speed, because human memory does.

#LayerHoldsPathForgets
1EpisodicWhat happened, per sessionjournal/fast — $S = 2$ days
2SemanticTopic facts with [[wikilinks]]: architecture, goals, blockerspalace/rooms/barely — $S = 9999$ days, salience-ranked
3ProceduralIF-THEN production rulespalace/skills/by use
4NarrativePhases: goal → what was hard → how solved → synthesispalace/pipeline/never (history)
5CorrectionRules the agent must follow — severity, evidence, outcomescorrections/never by time — only by retraction
+AwarenessCross-project insights promoted from repeated correctionspalace/awarenessconfirmation-weighted
~/.agent-recall/
├── projects/<slug>/
│   ├── journal/            episodic — one entry per session
│   ├── corrections/        behavioral rules + outcome ledger
│   └── palace/
│       ├── rooms/          semantic
│       ├── skills/         procedural
│       ├── pipeline/       narrative
│       ├── identity.md
│       └── awareness       cross-project insights
├── dreams/                 nightly consolidation reports
├── dashboard.html          human-readable
└── dashboard.json          agent-readable snapshot

All layers share one naming grammar, so an agent can compose a retrieval path from intent. Older files keep working through a legacy_path view — no migration.

How memory compounds

flowchart LR
    C["correction<br/>(remember / hook)"] --> L[(ledger)]
    L --> S["session_start<br/>ranked by severity,<br/>proof, recency"]
    S --> O{"same situation<br/>again?"}
    O -->|heeded| P["proof_count +1<br/>stability × 1.3"]
    O -->|recurred| X["phantom<br/>→ /arreflect<br/>rewrites the rule"]
    P --> A["≥ 3 confirmations<br/>→ awareness<br/>(cross-project)"]
    X --> L

A correction gets stronger each time it is confirmed, weaker when it is marked unhelpful, and graduates to every project once it has been confirmed on three distinct (day, project) occasions. A rule that was saved but whose mistake came back is a phantom — the write cost was paid and behavior never changed — and gets re-written, not just re-saved.

The math

Most of the field ships "AI memory" as a black box. Every mechanism in AgentRecall is a formula you can read, with its constants in the source and an honest label:

LabelMeaning
🟢 GROUNDEDA published result restated exactly, or a constant tuned on real data with a reported metric
🟡 HAND-TUNEDPrincipled functional form; constants chosen by judgment, not fit to recall outcomes
🔴 ASPIRATIONALThe claim is ahead of the math present — stated so, with the model that would close the gap

1 · Rank fusion — Reciprocal Rank Fusion 🟢

Palace, journal, insight and corrections each rank their own candidates; the lists are merged by rank, never by raw score, because the raw scores live on incomparable scales (Cormack, Clarke & Büttcher 2009 — the same $k$ Elasticsearch ships):

\mathrm{RRF}(d) \;=\; \sum_{\ell \,\in\, \text{lists}} \frac{w_\ell}{k + \mathrm{rank}_\ell(d)}, \qquad k = 60,\;\; w_\ell = 1

The optional semantic leg is just one more list with $w = 1.0$ — a weight measured, not chosen: 1.1 and 1.3 flooded the top-5.

[!NOTE] The math found a bug. Adjacent RRF ranks differ by only $\frac{1/(60+r)}{1/(61+r)} \approx 1.6\%$, so any post-fusion multiplier above ≈1.02 vaults an off-topic item over every on-topic one. The old ×3 / ×2 / ×1.3 "recent-item boost" did exactly that — top-5 filled with the last 72 h of diary lines. Removing it: 55.0% → 75.0% top-5 hit-rate on the golden set (twin-clone control, 2026-09-12).

2 · Forgetting — Ebbinghaus per source 🟢 form · 🟡 constants

R(t) = e^{-t/S}, \qquad S_{\text{journal}} = 2,\;\; S_{\text{knowledge}} = 180,\;\; S_{\text{palace}} = 9999 \text{ days}

3 · Spaced reinforcement — FSRS-lite 🟢 form · 🟡 constants

A two-component (stability, retrievability) simplification of FSRS-6 / SuperMemo — no difficulty term, because we never run review sessions:

R = e^{-\Delta t / S}, \qquad S_0 = 7\text{ d}, \qquad \underbrace{S' = 1.3\,S}_{\text{confirmed}}, \qquad \underbrace{S' = \max(1,\; 0.5\,S)}_{\text{marked wrong}}

Buckets: $R \ge 0.85$ hot · $\ge 0.6$ warm · $\ge 0.3$ cool · else archive candidate — surfaced on a dashboard, never auto-deleted.

4 · Salience — what a palace room is worth 🟡

\text{salience} = 0.30\,\text{recency} + 0.25\,\text{access} + 0.20\,\text{connections} + 0.15\,\text{urgency} + 0.10\,\text{importance}

with $\text{recency} = \max(0.05,\; \rho_c^{\,\text{days}})$, where the decay rate depends on category: goal $\rho = 0.99$ · architecture $0.98$ · decision / lesson $0.97$ · observation $0.95$ · blocker $0.90$. Self-reported importance is deliberately the weakest term — people mis-estimate it; what you actually use is the stronger signal.

5 · Learning from feedback — Beta–Bernoulli 🟢

Every recall result can be rated useful / not useful. The item's score is multiplied by twice its Laplace-smoothed posterior mean (neutral = ×1.0; the only post-fusion score change on default paths):

\mathbb{E}[\theta] = \frac{\text{pos}+1}{\text{pos}+\text{neg}+2}, \qquad \text{multiplier} = 2\,\mathbb{E}[\theta] \in (0, 2)

6 · Association — ACT-R activation 🟡 (opt-in AGENT_RECALL_ACTIVATION=1)

Memories cited together become linked. The associative term of ACT-R's declarative-memory equation (Anderson & Lebiere):

A_i = B_i + \sum_j W_j\, S_{ji}, \qquad S_{ji} = w_{ji}\, e^{-\Delta d / 30}, \qquad W_j = \tfrac{1}{|\text{context}|}

Re-rank: $\text{score}' = \text{score}\cdot\bigl(1 + 0.2\,\tfrac{x}{x+1}\bigr)$ — the $\tfrac{x}{x+1}$ squash keeps two incompatible scales from being summed, and is an exact no-op when there is no evidence.

7 · Paraphrase matching — set cosine 🟡 metric · 🟢 threshold

\cos(A,B) = \frac{|A \cap B|}{\sqrt{|A|\,|B|}}, \qquad \text{sim} = \max\bigl(\cos_{\text{concepts}},\; \cos_{\text{char-trigrams}}\bigr) \ge 0.20

Over stems + 13 hand-curated synonym groups ("publish / ship / release" collapse to one concept). It is fuzzy-lexical, not meaning. The 0.20 threshold is tuned by leave-one-out (predict-loo) as the highest-recall point that still holds 0% false positives.

8 · Promotion — admit, then vote 🟢

Nightly consolidation used to gate on $\tfrac{\text{obs}}{7}\times\text{recency} \ge 0.8$. At 2 AM the freshest journal is yesterday, so recency $\le 0.85$ and "3 observations in 7 days" scored $\tfrac{3}{7}\times 0.85 = 0.36$ — silently discarded for 22 nights, while uptime monitoring stayed green. The replacement separates admission from promotion:

\text{promote} \iff \#\{(\text{day},\,\text{project}) \text{ confirmations}\} \ge 3

and every night now writes a yield record, so a zero-output night is classified (empty-corpus · filtered · already-known · errored) instead of looking healthy.

9 · Measuring behavior change — heed rate + Wilson interval 🟢

\text{heed} = \frac{\text{heeded}}{\text{heeded} + \text{recurred}}, \qquad
\text{CI}_{95} = \frac{\hat p + \frac{z^2}{2n} \;\pm\; z\sqrt{\frac{\hat p(1-\hat p)}{n} + \frac{z^2}{4n^2}}}{1+\frac{z^2}{n}}, \quad z = 1.96

Small $n$ gets an honest, wide interval instead of a confident point. Events are tiered by evidence (heeded_verified · heeded_checkaction · heeded_default · recurred_verified · recurred_selfreport), and every KPI surface shows both tiers as a range — absence of evidence is not credited as "heeded."

10 · Calibrated confidence 🟡

\text{conf} = \frac{\text{score}}{0.12}\;(\text{local RRF}) \;\;\big|\;\; \frac{\text{score}}{0.049}\;(\text{Supabase RRF}) \;\;\big|\;\; \cos\;(\text{vectors}) \;\;\longrightarrow\;\; \text{high} \ge .66,\; \text{med} \ge .40,\; \text{low} \ge .20

Ramsauer et al. 2020, implemented with a numerically stable softmax, $\beta = 8$:

\xi^{\text{new}} = X^{\top}\operatorname{softmax}(\beta X \xi), \qquad E = -\tfrac{1}{\beta}\log\sum_i e^{\beta\langle x_i,\xi\rangle} + \tfrac12\lVert\xi\rVert^2

Not on the default path: the co-citation graph is sparse by construction, and Hopfield's exponential-capacity argument assumes a dense regime — it would mostly attend to non-edges. The linear ACT-R sum is the right primitive for a sparse graph.

Open problem 🔴 — does redundancy reconstruct intent?

Today, accumulated corrections are clustering + decay + set-cosine: a tally, not a posterior. Calling that "intent reconstruction" would overstate it. The model that would earn the phrase treats each correction as a noisy sample of a latent preference $\theta$, with $x_i = \theta + \varepsilon_i,\; \varepsilon_i \sim \mathcal N(0, \sigma^2 I)$ and prior $\theta \sim \mathcal N(\mu_0, \tau^2 I)$:

\operatorname{Var}[\theta \mid x_{1..N}] = \Bigl(\frac{1}{\tau^2} + \frac{N}{\sigma^2}\Bigr)^{-1} = O\!\left(\frac{\sigma^2}{N}\right),
\qquad \mathrm{SNR}_N = \frac{\lVert \mu_N \rVert^2}{\operatorname{tr}\operatorname{Var}[\theta \mid x_{1..N}]}

Falsifiable claim: $\mathrm{SNR}_N$ rises monotonically for a consistent correction stream and stalls when corrections conflict. Want to build it? This is the most important open problem in the repo.

Full derivations, inputs, and every constant's provenance: packages/core/src/MATH.md.

Measured, not promised

Agent-memory benchmarks test retrieval. None tests whether a correction changes what a fresh agent does. Here is what our own instrument says — including the parts that make us look bad.

MetricValueSource
🔁Retrieval hit@5, golden fixture v1 (26 queries, hash-locked)73.1% keyword [53.9, 86.3]80.8% + local embeddings [62.1, 91.5]npm run bench:golden
🔁session_start context injected, median244 tokensnpm run bench:injection
🔁session_start p95 warm / recall p9597 ms / 209 msnpm run bench:latency
🔁Correction-transfer fixture gateexact matchnpm run bench
🔒Real corrections captured (dual-blind audit, n = 59)35.3% [17.3, 58.7]UPDATE-LOG.md §M2
🔒Heed rate, evidence-grounded0 / 3 eventsscripts/eval/baselines/rmr-baseline-2026-07-03.json
🔒Offline correction-transfer recall0 / 4 [0, 49]scripts/eval/baselines/correction-transfer-real-2026-07-03.json
🔒Golden eval on a lived-in store (keyword → embeddings)75% → 90%fix7 report, 2026-09-12
🔒session_start on a lived-in store1,489 tokens · 363 ms p95UPDATE-LOG.md §C2

🔁 regenerates from this repo · 🔒 self-measured on the owner's private store, not reproducible here. Brackets are 95% intervals. The 80.8% embeddings leg is measured locally with the opt-in model (CI never downloads it, so no artifact is committed). Timings are machine-dependent; CI gates schema and determinism, never timing values.

We captured about a third of real corrections in our own use. The heed instrument used to default to "heeded" without evidence — it was reset to "unknown," so 0/3 is the honest starting point, not a regression (the pre-reset 92.5% is an instrument-biased upper bound; do not cite it). Offline transfer scores 0 on our corpus because 32 active corrections across 19 projects is too sparse to front-run mistakes — a density problem, not a retrieval one (confirmed 5× internally). Transfer recall cannot support a point estimate below 39 classes (claim-gate ledger, benchmark spec §2.6).

The fixture numbers are smaller than the lived-in ones because golden-v1 is synthetic and thin (3 projects). Every remaining fixture miss is a committed structural trap: pipeline dir, loose rooms file, cross-project silo.

Reproduce everything: docs/eval/REPRODUCE.md.

Compared to other memory tools

Typical agent memory (Mem0, Zep/Graphiti, Letta, Supermemory)AgentRecall
Optimizes forRecalling factsNot repeating mistakes
CorrectionsAnother memory rowGoverned ledger: severity, evidence, retraction, outcome
MeasuresRetrieval (LongMemEval, LoCoMo)Retrieval and behavior change across sessions
StorageHosted service or DBMarkdown on your disk; Supabase mirror optional
RankingUsually opaqueEvery formula and constant labelled (see The math)
Per-session cost~7k tokens/query (Mem0's published figure)~244 tokens at session_start (fixture)

Competitor figures are their own published numbers, not measured side by side. Landscape: docs/research/agent-memory-landscape-2026-07.md.

Install

MCP server — for agents

# Claude Code
claude mcp add --scope user agent-recall -- npx -y agent-recall-mcp

# Codex
codex mcp add agent-recall -- npx -y agent-recall-mcp
// Cursor — .cursor/mcp.json   ·   Windsurf — ~/.codeium/windsurf/mcp_config.json
{ "mcpServers": { "agent-recall": { "command": "npx", "args": ["-y", "agent-recall-mcp"] } } }

// VS Code — .vscode/mcp.json
{ "servers": { "agent-recall": { "command": "npx", "args": ["-y", "agent-recall-mcp"] } } }

Skill — Claude Code

mkdir -p ~/.claude/skills/agent-recall
curl -o ~/.claude/skills/agent-recall/SKILL.md \
  https://raw.githubusercontent.com/Goldentrii/AgentRecall-X/main/SKILL.md

SDK — JS/TS apps

import { AgentRecall } from "agent-recall-sdk";

const memory = new AgentRecall({ project: "my-app" });
await memory.capture("What stack?", "Next.js + Postgres");
const ctx = await memory.recall("rate limiting");

Each instance gets its own isolated root (AsyncLocalStorage), so concurrent instances never share state.

CLI — terminal, CI, hooks

npx agent-recall-cli recall "rate limiting"
ar bootstrap            # scan git repos, Claude AutoMemory, CLAUDE.md files (read-only, secrets untouched)
ar bootstrap --import   # import what it found

Optional extras

Keyword recall can't reach a memory phrased differently ("semver increment" vs "one version bump per release"). The opt-in semantic leg uses a local ONNX model and joins the same RRF fusion as one more list.

ar embeddings setup     # one-time: local runtime (~380 MB) + model (~145 MB), cached
ar embeddings rebuild   # incremental — only new/changed content embeds
export AGENT_RECALL_EMBEDDINGS=1
ar embeddings status
DefaultOFF — flag off is byte-identical to keyword recall
Modelparaphrase-multilingual-MiniLM-L12-v2; Chinese ↔ English cross-lingual; e5 family via AGENT_RECALL_EMBEDDINGS_MODEL
NetworkOnly setup downloads. Recall and rebuild run with remote fetch hard-disabled
DegradationMissing/corrupt index → keyword results with the reason in semantic_leg metadata — never an error
SecurityIndex stores content-hash → vector only (no text); semantic hits pass the same trust/scope/fence stages
Cloud seamA dormant OpenAI embedding path exists for vector recall; it activates only with AGENT_RECALL_CLOUD_EMBEDDINGS=1 and OPENAI_API_KEY set together — an ambient OPENAI_API_KEY alone never sends anything off-machine
DoesResult
Mine patterns across projectsCorrections confirmed on ≥3 (day, project) occasions promote to palace/awareness
Salience decayLow-signal rooms fade
Journal rollupsEntries > 30 days compress into summary rooms
Yield accountingEvery night classified; zero-output nights can't hide
Report~/.agent-recall/dreams/YYYY-MM-DD.md, optionally Telegram

Needs a live Claude Code login (claude login if it stops).

experimental/harness-kit/ — Claude Code hooks that answer "did the correction change behavior?": a SessionStart scoreboard, an error-class taxonomy with mechanical phantom detection (violation dated after its rule), an overdue-reflection nudge, and an optional model-dispatch guard. North-star: post-re-abstraction phantom rate → 0. First run: 8 error classes and 18 phantoms in 109 corrections; 6 rules re-abstracted the same day. Python 3 stdlib only.

Architecture

packages/
├── core/         storage, retrieval, math, tool logic     agent-recall-core
├── mcp-server/   thin MCP wrappers                        agent-recall-mcp
├── sdk/          programmatic API                         agent-recall-sdk
└── cli/          the `ar` command + hooks                 agent-recall-cli
flowchart LR
    Q[query] --> T[tokenize · stem<br/>synonyms · IDF]
    T --> P[palace<br/>0.9 key + 0.1 salience]
    T --> J[journal<br/>0.5 recency + 0.5 exact]
    T --> I[insights<br/>relevance · exact · confirm]
    T --> K[corrections<br/>exact · severity · proof]
    Q -. opt-in .-> V[local embeddings<br/>cosine top-8]
    P & J & I & K & V --> F["RRF  Σ w/(60+rank)"]
    F --> B["× Beta feedback"]
    B --> C[calibrated confidence]
    C --> R[results + alsoLinked]

All memory is local markdown. An optional Supabase mirror adds pgvector recall with the same RRF fusion; all-local stays the default. Writes go through a progress-aware file lock with NTFS-safe release; alignment and feedback logs are append-only NDJSON.

Platforms

PlatformMechanismStatus
Claude CodeMCP + skill + hooksPrimary
Codex · Cursor · Windsurf · VS Code (Copilot)MCPSupported
Any JS/TS appagent-recall-sdkSupported
Terminal / CIarSupported

CI runs build + regression + tests on ubuntu-latest and windows-latest.

Community

[!TIP] The 15-minute contribution that matters most. The field has vendor-selected positives and no external baselines for behavior change. Use AgentRecall for a week, then:

git clone https://github.com/Goldentrii/AgentRecall-X.git && cd AgentRecall-X
npm ci && npm run bench    # reads your local ~/.agent-recall corpus

Post the result in Discussions → Benchmark Numbers — a low score is a valid result. More in CONTRIBUTORS-WANTED.md.

Contributors

Thanks to @buer5, @lonelyhty and 雷昊 for the Windows portability work and fixes that shipped in 3.5.x.

Links

Contributing

PRs welcome. Open an issue first for anything substantive — the design is opinionated and grounded in published research, and we want changes grounded the same way: a formula, a label, and a measurement.

License

MIT — see LICENSE.

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