Agent Memory

io.github.theprodsdePublished by GitHub account theprodsdev0.1.5Updated Oct 24, 2026

Persistent agent memory with a decision layer: replay, restore, verify, or none — explainable.

The publisher's own server: Memory.fit

VerifiedSTDIODesktop onlyKnowledge & MemoryAI & ML

Overview

AI-generated overview

A local persistent memory store for AI agents that returns an explicit replay, restore, verify or none decision for each query.

What you can do
Resolve a query against stored memories and get an explicit action (replay, restore, verify or none) with a confidence score and reasoning, plus a formatted context block for restore decisions. Store query/response pairs with tags, type, scope, confidence and TTL. List stored memories with pagination, scope and archive filters, and fetch a single entry by ID. Archive entries so they are excluded from retrieval, permanently delete entries, and merge near-duplicate memories into summary entries.
When to use it
Useful when an agent answers the same or similar questions across sessions and you want control over whether a stored answer is replayed verbatim, injected as context, verified first, or skipped. Also fits fact-sensitive answers that can go stale, shared knowledge across agents, and audit trails of which memory answered and why. Not intended for document RAG over file corpora or as an application's source-of-truth database.
Requirements
Runs as a local stdio process, launched with uvx from the agent-memory-sdk PyPI package, so Python and uv are needed. Storage is a local SQLite store by default; the directory is set by AGENT_MEMORY_DIR (default ~/.agent_memory) and the collection by AGENT_MEMORY_COLLECTION. No API keys are required; optional Redis or PostgreSQL backends need those services.
Before you install
The server writes to a persistent local store: remember_memory adds entries, forget_memory permanently deletes them, archive_memory hides them from retrieval, and consolidate_memories merges near-duplicates, so changes should be reviewed. Stored memories may contain conversation content and are kept on disk in the configured directory. Replayed answers can be stale; the verify action and TTL exist for that reason.

Installation

In SourceWeft

  1. Open Agent Memory in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

Agent Memory

[CI] [Python 3.10+] [License: Apache-2.0] [PyPI version] [MCP Registry]

Persistent semantic memory for AI agents with intelligent decision-making.

[Agent Memory CLI demo: exact query REPLAYs, paraphrase RESTOREs as context, shared-word trap correctly returns NONE]

🚀 Created by: TheProdSDE


The problem

Most AI memory systems retrieve and inject past context into every prompt. This leads to wasted tokens, inconsistent responses, and agents that blindly replay stale or wrong answers.

Agent Memory adds a decision layer:

mermaid
flowchart TD    A[User Query] --> B[Resolve Memory]    B --> C[Decision Engine]    C -->|High confidence match| D[🔄 Replay — return stored answer]    C -->|Moderate match| E[📋 Restore — inject as context]    C -->|Needs validation| F[✅ Verify — validate before reuse]    C -->|No match| G[❌ None — answer from scratch]
    style D fill:#0d47a1,color:#fff    style E fill:#e65100,color:#fff    style F fill:#1b5e20,color:#fff    style G fill:#b71c1c,color:#fff

Every resolve() returns an explicit action with a scored, explainable rationale — not just a retrieved chunk. Adversarial eval: 34/36 (94%) on trap queries — the 2 misses return VERIFY (cautious), never a wrong REPLAY — see benchmarks.


Context rot — what this solves (and what it can't)

Context rot is the measured degradation of LLM accuracy as the context window fills — long before the token limit. Stale chunks, irrelevant retrievals, and unbounded conversation history don't just waste tokens; they actively degrade answers ("lost in the middle", instruction drift, distractor sensitivity).

Context rot has two causes. Agent Memory addresses the first; nothing outside the model itself can address the second.

1. What goes into the context — controllable, and this SDK's job:

Rot sourceMechanism in Agent Memory
Irrelevant memory injected into every promptDecision layer — NONE refuses to inject when nothing truly matches (34/36 on adversarial trap queries; the 2 misses fail safe to VERIFY)
Unbounded in-session historyPagedMemory — fixed in-context buffer; old turns page out to recall storage and return per-query (MemGPT-style tiers)
Instruction drift in long coding sessionsRESTORE re-injects the relevant convention fresh, near the end of context, exactly when a query needs it
Stale facts silently reusedVERIFY + custom verifier callbacks + TTL expiry + half-life temporal decay
Reminders that never adaptmark_correct() / mark_wrong() — confidence learning promotes memories that keep helping, demotes corrected ones
Knowledge lost when the session endsfrom_conversation() distills durable facts from conversation turns into the store

2. How the model attends over tokens already in its context — not controllable from outside. Attention degradation over long context is a property of the model. No memory layer changes that. What Agent Memory does is keep the context small and relevant enough that the model rarely enters the degraded regime in the first place.

The honest claim: Agent Memory prevents context pollution — the dominant controllable cause of context rot in agentic systems. It doesn't change model attention behavior, and it only helps if your agent routes context through resolve() / PagedMemory instead of concatenating history by hand.


How it compares

Today you need three tools wired together to get what resolve() does in one call: a semantic cache (GPTCache) for replay, a memory layer (Mem0 / Zep) for context, and custom staleness logic for verification. No existing tool decides — at read time — whether and how a memory should be used.

Cells about other projects are capability checks against their own source or docs (mem0 checked on 2026-09-27), not measured behaviour; ❔ means we have not tested it rather than that it is absent. Corrections welcome — see docs/comparison.md for sourcing and the benchmark RFC for the review process.

CapabilityMem0Zep / GraphitiLetta (MemGPT)GPTCacheAgent Memory
Read-time decision (replay / inject / verify / skip)❌ always injects❌ always injects⚠️ LLM self-manages⚠️ replay only✅ REPLAY / RESTORE / VERIFY / NONE
Explainable per-decision scores❌❌❌❌✅ decision.explain()
Semantic answer cache (skip the LLM call)❌❌❌✅✅
Staleness protection at read time⚠️ write-side updates + expiration_date✅ temporal graph❌⚠️ eviction only✅ VERIFY + TTL + confidence decay
Adversarial trap-query eval published❔ none found❔ none found❔ none found❔ none found✅ 34/36 (94%)
LLM / API calls per memory op1+1+1+00
Local after model assets are installed/cached, zero API keys⚠️ self-hostable; needs an LLM for extraction⚠️ needs server + LLM⚠️ LLM per op✅✅ SQLite + local ONNX
Paged context tiers (MemGPT-style)❌❌✅❌✅ memory.paged()

Because hosted or model-backed configurations can add an LLM or embedding API round-trip per memory operation, their latency includes provider, model, and network costs. Exact latency depends on each project's configuration; this repository does not publish a universal 100ms–2s floor. Agent Memory resolves in-process in SQLite-only mode; measured latency depends on corpus shape and cache state (see performance and stress-testing details).

On retrieval, we publish a cleaned-release retrieval-proxy measurement below. On end-to-end accuracy (LLM answering + judge, where Mem0 and Zep publish), we don't quote numbers we haven't measured yet — that stage is next on the roadmap. → Full feature matrix and trade-offs (including where they're better): docs/comparison.md

Benchmarked on LongMemEval (ICLR 2025)

LongMemEval is a benchmark for conversational-history retrieval. These results measure Agent Memory's RESTORE/retrieval tier, not REPLAY, VERIFY, TTL, or end-to-end answer correctness. Each question runs against a separate SQLite store containing that question's haystack; aggregate ingestion totals are not the size of one queried store. All ingestion uses zero LLM calls and $0 in API charges:

  • LongMemEval_S (500 independent ~48-session haystacks; 124K turn-pair entries across all runs): 98.1% session Recall@5 with local ONNX embeddings, 96.0% lexical-only, 10.04ms lexical / 19.56ms semantic p50 retrieval. The report includes p90/p95/p99 and run-resource measurements.

  • LongMemEval_M (500 independent ~500-session haystacks; ~2,500 turn-pair entries per queried store): 87.0% session Recall@5 with lexical retrieval, 12.05ms p50. This uses the official cleaned re-release and turn-pair indexing; it is not directly comparable with the paper's original-release session-index baselines.

[LongMemEval_S retrieval by question type]

[LongMemEval_M result and published baseline context]

Full methodology, per-type tables, scope notes (what this benchmark does and doesn't test), and negative results are in the benchmark report. Reproduce the semantic _S result with uv run python benchmarks/longmemeval/run_retrieval.py --semantic.

Real software, not a prototype

Every claim below is reproducible from this repo:

  • 34/36 (94%) on adversarial decision-quality eval, and the 2 misses fail safe (VERIFY, never wrong REPLAY) — agent-memory eval (methodology)
  • LongMemEval retrieval proxy: 98.1% Recall@5 (_S, semantic) · 87.0% (_M, lexical) — 500 independent haystacks; not an end-to-end or paper-baseline head-to-head, full report
  • Reproducible stress harness for synthetically seeded workloads up to 1,000,000 entries; archive the JSON output before publishing a performance claim (methodology)
  • Stress-test benchmark charts: latency percentiles, seed throughput, resource use, action mix, and cache/decision rates for lexical FTS5 runs at 10K, 100K, and 1M entries, with workload and archived result JSON documented in stress-testing
  • 412 collected tests across 25 test modules — decision quality, concurrency, all 4 backends, MCP server, adapters — run in CI on every push
  • Published on PyPI and the official MCP Registry
  • Ships with a REST API, Streamlit dashboard, CLI, LangChain/LlamaIndex adapters, and async counterparts for memory read/write and decision operations

When to use it — real use cases

Use caseWithout memoryWith Agent MemorySaving
Support bot handling 10k identical FAQ queries/dayEvery query costs 1 LLM callIf roughly 75% of requests match reusable memories, those matches can REPLAY without an LLM callPotentially lower LLM cost; measure your workload
Coding agent that re-derives project conventions each sessionWastes 2–5 LLM calls per session to "remember" conventionsConventions stored once are REPLAYED/RESTORED from the first query of every later sessionNo re-derivation overhead
Research agent building knowledge over multiple sessionsEach session starts cold; re-reads the same sourcesFacts and summaries are RESTORED as contextPersistent cross-session knowledge
Customer onboarding bot answering the same steps repeatedlyAlways generates a responseHigh-confidence workflows are REPLAYED verbatimConsistent identical answers
Tool-output caching for expensive API callsCalls the external API every timeResults stored with TTL; REPLAY within TTL, re-call afterReduced external API cost
Policy-compliance agent that must verify facts before replayingSilent hallucination risk on stale datarequires_verification=True routes relevant matches to VERIFY; low-scoring matches return NONEAuditability + safety

Where Agent Memory saves real money

A GPT-4o call costs ~$0.005. A support agent handling 50,000 queries/day with 70% repeat rate:

  • Without memory: 50,000 × $0.005 = $250/day
  • With Agent Memory: 15,000 LLM calls + cache misses = $75/day
  • Saving: ~ $175/day (~$64k/year)
  • Savings depend on your repeat rate and how similar incoming queries are to previously stored ones — measure in your own pipeline.

REPLAY avoids an LLM call when policy permits it. The latency and cost difference depends on the local workload, provider, model, and network; measure both paths in your own pipeline.

Is it right for your use case?

Good fit:

  • Agent answers the same or similar questions across sessions
  • You have fact-sensitive answers that can go stale (prices, limits, policies)
  • Multiple agents or services share a knowledge base
  • You need audit trails — knowing which memory answered and why

Not the right tool:

  • Document RAG over a corpus of files → use a vector database for that
  • Replacing your application's source-of-truth database
  • Agents that never repeat similar queries

Features at a glance

FeatureWhat it does
Decision engineEvery resolve() returns REPLAY / RESTORE / VERIFY / NONE — never silent injection
Explainabilitydecision.explain() shows per-component scores: semantic, recency, confidence, usage
Hybrid retrievalBM25 FTS5 + optional vector KNN + RRF fusion — fast and accurate
4 backendsSQLite (default, zero-setup) · ChromaDB · Redis · PostgreSQL
Framework adaptersDrop-in BaseMemory for LangChain and LlamaIndex
MCP serverWorks with Cursor, Claude Code, VS Code via Model Context Protocol
REST APIFastAPI server with 9 endpoints + Swagger UI
DashboardStreamlit UI — stats, memory browser, live resolve sandbox
Multi-agentSHARED / NAMESPACED / ISOLATED memory across multiple agents
Confidence learningEvent-driven confidence updates + half-life temporal decay
Memory graphRelationship edges, path-finding, clusters, PageRank importance
Paged contextMemGPT-style tiers: in-context buffer → recall → archival; bounded working set per query
Conversation distillationfrom_conversation() auto-extracts facts, preferences, and entities from turns
Async APIaremember, aresolve, alist, … — memory read/write and decision operations have async counterparts
TTL & statesAutomatic expiry, archiving, near-duplicate consolidation

→ Full feature reference: docs/features.md


Performance

Latency, CPU, and memory use depend on the corpus, query distribution, cache state, embedding mode, machine, and operating system. The bundled harness uses a repeatable synthetic workload; it does not establish a production SLA.

The current lexical FTS5 benchmark results and charts are archived with their source JSON in the stress-test methodology. See that document for commands, workload scope, and guidance on interpreting results.


When to use it

Use Agent Memory when:

  • You want an agent to remember past interactions without injecting all of them into every prompt
  • You need explicit control over when memory is used (replay exact answers vs inject as context vs verify first)
  • You have different memory trust levels (user preferences vs potentially-stale facts vs tool outputs)
  • Multiple processes, services, or agents share the same memory store
  • You need audit trails — every replay is traceable to a specific stored entry with a score breakdown

Don't use it for:

  • Document RAG (search over a corpus of files) — use a vector database for that; Agent Memory stores query→answer experiences
  • A replacement for your database — it stores transient agent knowledge, not your application's source-of-truth data

Quick Start

bash
pip install agent-memory-sdk
python
from agent_memory import Memory, MemoryAction
memory = Memory(persist_dir=".agent_memory")
# Store once after a good answermemory.remember(    "How do I reset my password?",    "Go to Settings → Security → Reset Password.",    type="conversation", tags=["auth"],)
# Decide before every LLM calldecision = memory.resolve("How do I reset my password?")
if decision.action == MemoryAction.REPLAY:    return decision.response          # exact match — no LLM call needed
if decision.action == MemoryAction.RESTORE:    context = memory.format_restore_context(decision)    return call_llm(query, system_extra=context)
# VERIFY or NONE — validate or answer fresh

→ Full integration pattern and API reference: docs/usage.md


Local Setup

Option 1 — SQLite (zero dependencies, recommended to start)

bash
pip install agent-memory-sdk
# Store somethingagent-memory remember "How do I reset my password?" \  "Go to Settings → Security → Reset Password." \  --type conversation --tags auth,faq
# Ask the exact question back → REPLAY (no LLM call needed)agent-memory resolve "How do I reset my password?"# ✅ REPLAY   confidence: 0.88# response: Go to Settings → Security → Reset Password.
# Ask a paraphrase → RESTORE (inject as context, don't answer verbatim)agent-memory resolve "I forgot my password"# 📋 RESTORE  confidence: 0.77# [1] score=0.77  How do I reset my password? → Go to Settings → …
# See what's storedagent-memory stats

Option 2 — Redis or Postgres backend

bash
# Spin up the servicesdocker compose -f docker-compose.dev.yml up -d
# Install the backend extrapip install "agent-memory-sdk[redis]"      # or [postgres]
# Use itagent-memory --backend redis remember "API limit" "1000 req/min" --type factagent-memory --backend redis resolve "What is the rate limit?"

Option 3 — Streamlit dashboard (visual exploration)

bash
pip install "agent-memory-sdk[dashboard]"
# Seed demo data (optional)python scripts/seed_demo.py --data-dir .agent_memory
# Open the dashboardAGENT_MEMORY_DIR=.agent_memory agent-memory-dashboard# → http://localhost:8501

Option 4 — Development / from source

bash
git clone https://github.com/TheProdSDE/agent-memory-sdk.gitcd agent-memory-sdkpython -m venv .venv && source .venv/bin/activatepip install -e ".[dev]"make test          # run all testsmake check         # lint + type check

Dashboard

An interactive Streamlit dashboard for exploring memories, testing the resolve sandbox, and monitoring stats.

[Agent Memory dashboard slideshow: stats, memory table, replay/verify/none resolve results]

bash
pip install "agent-memory-sdk[dashboard]"AGENT_MEMORY_DIR=.agent_memory agent-memory-dashboard   # → http://localhost:8501
# Seed demo data (optional — run only when you want it)python scripts/seed_demo.py --data-dir .agent_memory

MCP Server

Agent Memory is published on the MCP Registry — install it in any MCP-compatible client with zero manual setup.

Add to your MCP client

Cursor — add to .cursor/mcp.json in your project, or ~/.cursor/mcp.json globally:

json
{  "mcpServers": {    "agent-memory": {      "command": "uvx",      "args": ["agent-memory-sdk"]    }  }}

Claude Desktop — add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

json
{  "mcpServers": {    "agent-memory": {      "command": "uvx",      "args": ["agent-memory-sdk"]    }  }}

Claude Code — add to .claude/settings.json in your project:

json
{  "mcpServers": {    "agent-memory": {      "command": "uvx",      "args": ["agent-memory-sdk"]    }  }}

uvx installs the package on first run — no pip install needed.

Custom storage location

json
{  "mcpServers": {    "agent-memory": {      "command": "uvx",      "args": ["agent-memory-sdk"],      "env": {        "AGENT_MEMORY_DIR": "/path/to/your/memory",        "AGENT_MEMORY_COLLECTION": "my_project"      }    }  }}
VariableDefaultDescription
AGENT_MEMORY_DIR~/.agent_memoryDirectory for the persistent SQLite store
AGENT_MEMORY_COLLECTIONagent_memoriesCollection name (one DB per collection)

Tools exposed

ToolWhat it does
resolve_memoryRetrieve memory and get an explicit decision: replay / restore / verify / none — with confidence score and reasoning
remember_memoryStore a query/response pair with optional tags, type, scope, confidence, TTL
list_memoriesPaginated list of stored memories with scope and archive filters
get_memory_by_idFetch a single memory entry by ID
forget_memoryPermanently delete a memory
archive_memoryArchive a memory (excluded from retrieval, not deleted)
consolidate_memoriesMerge near-duplicate memories into summary entries

→ Full MCP setup guide and Docker config: docs/mcp.md


Integrations

agent-memory-sdk is the core — every integration delegates to Memory.

IntegrationInstall extraExample
Core SDK (SQLite)(none)basic_usage.py
LangChain BaseMemory[langchain]langchain_integration.py
LlamaIndex BaseMemory[llamaindex]llamaindex_integration.py
Redis backend[redis]redis_backend.py
PostgreSQL backend[postgres]postgres_backend.py
Multi-agent isolation(none)multi_agent.py
FastAPI REST server[api]rest_api.py
Confidence + Graph(none)confidence_and_graph.py
Benchmark harness(none)benchmark_harness.py

→ Setup instructions and code snippets for each: examples/README.md


Tech Stack

ComponentTechnology
LanguagePython 3.10+
StorageSQLite · ChromaDB · Redis · PostgreSQL
RetrievalBM25 FTS5 + Vector KNN + RRF fusion
InterfacesMCP · FastAPI · Streamlit · CLI
AdaptersLangChain BaseMemory · LlamaIndex BaseMemory
Search DSABloom filter (NONE fast-path) · Dynamic IDF stop words · RRF fusion
Testingpytest (412 collected tests) · ruff · mypy
CI/CDGitHub Actions — test matrix 3.10–3.13 → release gate → PyPI

No API keys required — everything runs locally.


Documentation

DocContents
docs/usage.mdIntegration pattern, API reference, MemoryEntry / MemoryDecision fields
docs/features.mdDecision actions, hybrid retrieval, types, scopes, TTL, graph, multi-agent
docs/mcp.mdMCP server setup for Cursor, Claude Code, VS Code; Docker config
docs/cli.mdCLI commands, REST API server, dashboard launch, eval dataset format
docs/roadmap.mdAll shipped features, what's next, GitHub Project board
docs/release.mdCI-automated release process, versioning, rollback
docs/architecture.mdRetrieval pipeline, scoring policy, system design
docs/comparison.mdFeature matrix vs Redis, mem0, Zep, LangMem, LlamaIndex, MemGPT
docs/stress-testing.md10K / 100K / 1M latency benchmarks with methodology
docs/benchmarks.mdEval results and reproduce commands
docs/why-decision-layer.mdThe failure mode this project exists to fix
examples/README.mdIndex of all runnable examples
CONTRIBUTING.mdDev setup, test commands, PR checklist

Status & Roadmap

All planned features through v0.5.0 are shipped. Track what's next on the GitHub Project →

→ docs/roadmap.md

Release

Tag-triggered, fully CI-gated: git tag v0.x.y && git push origin v0.x.y

→ docs/release.md


Contributing

See CONTRIBUTING.md for dev setup, test commands, and the PR checklist.


Citation

If you use Agent Memory SDK or its benchmark suite in your research, articles, or projects, please cite this repository using GitHub's Cite this repository button.

For reproducible benchmark comparisons, reference the exact SDK version, benchmark dataset version, configuration, and Git commit.


License

Apache-2.0 — see LICENSE.


Support


Agent Memory helps agents decide: Replay → Restore → Verify → Ignore

Built with ❤️ by TheProdSDE

mcp-name: io.github.theprodsde/agent-memory

Source: README.md at commit 62bab6e

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v0.1.5LatestSep 23, 2026

Score

40% of the applicable checks met

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  • Auth declared10 pts

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  • Tools listed15 pts

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  • DescriptionRequired15 pts
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  • License10 pts

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