The Zero-Overhead, Agent-Ready AI Memory Engine.

"A database returns what was written. A memory engine reconstructs what is reachable from a cue — under decay, association, and tier physics."
_{— Memory Fundamentals MF-001}

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Legacy AI stacks bolt memory onto stateless vector databases — storage without cognition. Spector is a cognitive memory engine for AI agents: it remembers, forgets, consolidates, and forms associations across working, episodic, semantic, and procedural tiers, then retrieves with fused semantic and hybrid scoring at sub-millisecond latency. Traces are linked by co-activation, temporal, and entity edges, so recall can surface what is related, not only what matches a vector. Connect any agent through the built-in MCP server, call it over REST/gRPC, drive it from the Python or TypeScript SDKs, or embed it directly in the JVM. Every user, agent, or tenant is physically isolated in its own on-disk namespace — true data separation, not a shared-store filter. Under the hood, Java Project Panama and the Vector API deliver SIMD scoring with measured near-zero garbage-collection pressure, and no external database.

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⚡ 30-Second Quickstart

Connect an agent, install an SDK, or launch a local node in seconds:

1. Zero-Install MCP Server (for AI Agents)

Run instantly via NPX — connects to a running local Synapse daemon on :7070 if healthy, or runs an embedded memory kernel (requires OpenJDK 25+):

# Agent runner: connects to local daemon or launches in-process MCP kernel
npx -y @spectrayan/spector mcp

# Or build and launch from source:
mvn clean package -pl synapse/spector-cli -am -DskipTests
java --enable-preview --add-modules=jdk.incubator.vector -jar synapse/spector-cli/target/spector.jar mcp

2. Client SDKs (Zero Java Required)

Interact with Spector over HTTP / SSE from your language of choice:

Python:

pip install spector-client

from spector_client import SpectorClient, MemoryTier

client = SpectorClient.builder().with_rest("http://localhost:7070").build()
client.memory.remember(
    text="User prefers concise answers and dark mode",
    tier=MemoryTier.SEMANTIC,
    tags=["preferences", "ui"],
)
memories = client.memory.recall("user preferences", top_k=3)

TypeScript / Node.js:

npm install @spectrayan/spector-client

import { SpectorClient, MemoryTier } from '@spectrayan/spector-client';

const client = SpectorClient.createDefault('http://localhost:7070');
await client.memory.remember({
  text: 'User prefers concise answers and dark mode',
  tier: MemoryTier.SEMANTIC,
  tags: ['preferences', 'ui'],
});
const memories = await client.memory.recall('user preferences', { topK: 3 });

3. Instant Local Server (Docker Compose)

docker compose up -d                        # Core engine (:7070) + Cortex Neural Dashboard (:7700)
docker compose --profile embeddings up -d   # Adds local Ollama container for embeddings

4. Standalone One-Line Installers

# Linux / macOS (POSIX)
curl -fsSL https://raw.githubusercontent.com/spectrayan/spector/main/scripts/install.sh | sh

# Windows (PowerShell)
irm https://raw.githubusercontent.com/spectrayan/spector/main/scripts/install.ps1 | iex

(For Homebrew, Scoop, Helm, and Java embed instructions, see the Installation Guide).

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🤖 Instant AI Agent Setup

Connect Spector to your favorite AI coding assistant or desktop agent in seconds:

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "spector": {
      "command": "npx",
      "args": ["-y", "@spectrayan/spector", "mcp"]
    }
  }
}

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "spector": {
      "command": "npx",
      "args": ["-y", "@spectrayan/spector", "mcp"]
    }
  }
}

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "spector": {
      "command": "npx",
      "args": ["-y", "@spectrayan/spector", "mcp"]
    }
  }
}

Claude Code CLI

claude mcp add spector -- npx -y @spectrayan/spector mcp

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📐 Mathematical Foundation

Every stored trace is a fixed record:

$$m = \bigl(\vec{v}_m,\ \tau_m,\ V_m,\ I_m,\ t_m,\ k_m\bigr)$$

embedding, tag Bloom, valence, base importance, write time, recall count.

Decay (power-law, bucketed lookup in the hot loop):

$$D(t, k) = \max\bigl(D_{\min},; a \cdot t_{\mathrm{eff}}^{;-d}\bigr), \quad t_{\mathrm{eff}} = \mathrm{bucket}(t) \gg k$$

with $d = 0.15$, $D_{\min} = 0.10$.

Rank (after live-bit, tag-containment, and valence-range gates):

$$\mathrm{score}(q, m) = \alpha,\mathrm{sim}(q, \vec{v}_m) + \beta,I_m,D(t - t_m,; k_m)$$

Association (after top-$K$, not inside the SIMD product): neighbours on the co-activation graph enter with $\mathrm{score} \times 0.3$, then temporal and entity hops.

Similarity is dense retrieval. Decay and importance change what remains reachable. The graph walk changes what else is admitted. That is the whole distinction from a vector store. Details and parameters: scoring-pipeline.md and MF-001.

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System Architecture & Data Flow

Spector is structured as a modular four-tier engine: a sealed off-heap kernel, graph-backed association, and in-process MCP between the SIMD path and the agent runtime:

• Nucleus (Foundation): Core configurations, off-heap storage layouts (Panama MemorySegment), and standard utilities.
• Memory (Cognitive Engine): The flagship hybrid retrieval and cognitive memory system combining dense vector, sparse (SPLADE/Li-LSR), keyword (BM25), association graphs, and consolidation pipelines.
• Synapse (Gateway & APIs): Spring Boot entry points, Armeria-based REST/gRPC gateways, and stdio/HTTP Model Context Protocol (MCP) servers.
• Cortex (UI): Three.js and Angular-powered observability dashboard for real-time visualization of memory graphs, decay, and search metrics.

For a comprehensive analysis of the system architecture, data flows, thread scheduling model, and detailed Mermaid diagrams, see the Architecture Overview Docs.

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🤖 MCP-Native — Built for AI Agents

Spector is an MCP-native cognitive memory engine — not an afterthought adapter. The MCP server runs in-process with the memory system (zero network, zero serialization), giving agents direct SIMD-accelerated access to 16 tools across memory storage, recall, and introspection.

Why MCP-Native Matters

	Spector (MCP-native)	Typical MCP adapter
Architecture	Memory + MCP in one JVM	Python wrapper → HTTP → DB
Memory recall	Ultra-low latency (fused scoring)	50–200ms (Mem0/Letta/Zep)
Tools	16 (memory, recall, introspection)	3–5 basic CRUD
Cognitive features	Decay, Hebbian, consolidation, valence	Key-value store
GC pressure	Zero (Panama off-heap)	Full GC overhead

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🧠 Cognitive Memory — AI Agents That Actually Remember

Spector Memory gives AI agents a cognitive memory layer that can remember, forget, consolidate, and associate — with sub-millisecond in-process recall and measured near-zero garbage-collection pressure.

Capability	What it does
Four memory tiers	Working → Episodic → Semantic → Procedural
⚡ Ultra-Fast Recall	Sub-millisecond in-process execution (vs. 50–200ms for Mem0/Letta/Zep)
🔗 Fused SIMD Scoring	Similarity × importance × decay in a single pass — no truncation trap
🛏️ Offline Consolidation	Demote or drop low-utility traces, rebuild partitions
😱 Valence Weighting	Signed valence weight in the recall score
🚫 Zero GC	100% off-heap Panama storage (≤0.01% overhead measured)

📖 Full Cognitive Memory Documentation →

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✨ Key Capabilities

Capability	What makes it different
🧠 Cognitive memory tiers	Working → Episodic → Semantic → Procedural, with decay, consolidation, and valence — memory that behaves like memory, not a key-value store
🔗 Associative memory graphs	Co-activation, temporal, and entity edges — recall surfaces what is related, not only what matches
🤖 In-process MCP server	Cognitive tools over stdio + Streamable HTTP — agents call memory directly, zero network hops
⚡ Fused SIMD scoring	Similarity × importance × decay in one pass — ultra-fast in-process fused recall
🔍 Hybrid retrieval	Dense + sparse + late-interaction reranking, fused with RRF, with graceful degradation
🔒 Physical namespace isolation	Every user, agent, or tenant's memory lives in its own on-disk directory tree — true data separation, not a logical filter — hash-sharded to millions of namespaces, encrypted at rest (AES-256-GCM)
🧊 Zero-GC off-heap storage	100% off-heap via Panama — ~0.01% GC overhead measured
🗜️ Quantization	SVASQ-8/4 + IVF-PQ — 4–32× compression at ~99.5% recall
🖥️ GPU acceleration	Optional CUDA via Panama FFM, zero-copy transfer
📦 Flexible deployment	Embedded JAR, standalone, or distributed

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📸 Demo

_{🎥 Watch the Neural Graph in action →}

📊 Dashboard — 12+ live cognitive panels

Real-time scoring pipeline, SIMD lanes, decay curves, vector space, Hebbian graph, cognitive profiles, live metrics — all rendered with Three.js, Canvas 2D, and Angular Signals.

🌌 Graph Explorer — 3D neural galaxy

Interactive 3D graph with glowing star nodes, Hebbian/temporal/entity edges, fly-to navigation, and real-time topology stats.

🧠 Memory Table — browse & manage memories

Full CRUD with tier filtering, importance bars, valence indicators, synaptic tags, recall counts, and bulk actions.

🔬 Memory Detail — deep cognitive inspection

Identity, cognitive state (importance/valence/arousal), synaptic tags, and full relationship graph (Hebbian associations, temporal chains, entity links).

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🛠️ Building From Source (Engine Contributors)

Prerequisites: OpenJDK 25+, Maven 3.9+

Java Compatibility

Component	Minimum JDK	Notes
Client SDK (spector-client)	25	Thin HTTP client; Java 25 reactor aligned
Server image (deploy/docker)	25	Ships with --enable-preview --add-modules=jdk.incubator.vector
Embedded engine (spector-memory)	25 + Vector API	Requires --add-modules jdk.incubator.vector --enable-native-access=ALL-UNNAMED --enable-preview

Note: There is no startup preflight for the Vector API module. SimdCapability reports SIMD availability but does not probe or fail fast. spector-kernel's module-info.java hard-requires jdk.incubator.vector, and SimdCapability touches FloatVector in a static initializer — so a missing module causes a NoClassDefFoundError at class load, not a graceful scalar fallback. The scalar fallback at AcceleratorRegistry / SmartSimilarityKernel covers a missing accelerator, not a missing module.

git clone https://github.com/spectrayan/spector.git
cd spector
mvn clean test                                             # Build reactor & run tests
mvn package -pl synapse/spector-cli -am -DskipTests        # Package standalone spector.jar

Launch the standalone engine:

java --add-modules jdk.incubator.vector \
  --enable-native-access=ALL-UNNAMED --enable-preview \
  -jar synapse/spector-cli/target/spector.jar doctor

📖 Full Developer Guide → · Configuration Reference →

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📊 Benchmarks

All numbers measured on Intel Core Ultra 9 285K, Java 25, AVX2 256-bit.

Benchmark	Result	Notes
Vector search p50	88–143µs	10K–100K docs, HNSW M=16
Cognitive recall	Ultra-low latency	Hardware-accelerated in-process SIMD
Peak QPS (16 threads)	61,011	Concurrent vectorSearch
GC overhead	0.01%	1 pause / 100K searches
vs. Python MCP servers	23–113× faster	In-process SIMD, zero network

📖 Full Benchmark Report → · Performance Tuning →

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📖 Documentation

I want to...	Start here
Get started in 30 seconds	Quick Start · Installation Guide
Connect an AI agent	MCP Server Setup · Claude & Cursor Guide
Use client SDKs	TypeScript SDK · Python SDK · Java SDK · Spring AI
Explore cognitive memory	Memory Overview · Cognitive Profiles · Scoring Pipeline
Deploy to production	Docker & Compose · Kubernetes Helm · Terraform Cloud
Review Architecture & ADRs	Architecture Decision Records (ADRs) · System Architecture
Contribute & Governance	Developer Guide · Contributing Guide · Project Governance

📖 Full Documentation Portal →

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🤝 Contributing

We welcome contributions of all kinds — code, docs, tests, benchmarks, and ideas!

• 🏛️ Open Governance → See GOVERNANCE.md for our 4-tier contributor ladder and decision mechanics
• 📋 Architecture Decisions (ADRs) → See docs/adr/README.md for the living ADR framework and proposal process
• 🔧 Want to contribute code? → See CONTRIBUTING.md
• 🐛 Found a bug? → Open an Issue
• 💡 Have an idea? → Start a Discussion
• 🤖 AI-assisted PRs welcome!

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⭐ Star History

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📄 License

Spector is free and open-source software licensed under the Apache License 2.0. All modules, client SDKs, tooling, and connectors are distributed under Apache 2.0.

For branding and trademark guidelines, see the NOTICE file.

🔒 Security

See SECURITY.md for our security policy and vulnerability reporting.

🙏 Acknowledgments

See ACKNOWLEDGMENTS.md for our Open Source Contributors hall of fame, as well as credits to the cognitive science researchers, open-source frameworks, and AI coding tools that made Spector possible.

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Built with ⚡ by Spectrayan