Cross-session memory and recall for AI coding assistants -- works with Claude Code, Cursor, OpenCode, Cline, Continue.dev, and Aider out of the box. Git-synced knowledge base, hybrid semantic+TF-IDF search, auto-distillation with secrets scrubbing.
Cross-session memory and recall for AI agents — git-synced knowledge base, hybrid semantic+TF-IDF search, auto-distillation with secrets scrubbing
2026-10-28
ดาว
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Benchmark:R@5 = 97.2% (sparse) / 98.8% (hybrid) on longmemeval_s and 86.0% (sparse) / 88.4% (hybrid) on the harder longmemeval_m split — the public LongMemEval academic benchmark (Wu et al. 2024, ICLR 2025), full 500 questions per split, no LLM, no API key, runs entirely offline. +8.6pp to +13.2pp R@5 over the paper's official flat-bm25 baseline in apples-to-apples reproduction. Full per-category table, reproduction instructions, and paper-comparison details in bench/README.md.
In Claude Code, the agent-knowledge plugin adds the /knowledge pane: the knowledge base beside the conversation. How it works, with pictures: the user manual.
Why
AI coding sessions are ephemeral. When a session ends, everything it learned -- architecture decisions, debugging insights, project context -- is gone. The next session starts from scratch.
agent-knowledge solves this with two complementary systems:
Knowledge Base -- a git-synced markdown vault of structured entries (decisions, workflows, project context) that persists across sessions and machines.
Session Search -- TF-IDF ranked full-text search across session transcripts from all your coding tools, so agents can recall what happened before -- regardless of which tool was used.
Supported Tools
Sessions from all major AI coding assistants are auto-discovered -- if a tool is installed, its sessions appear automatically.
Tool
Format
Auto-detected path
Claude Code
JSONL
~/.claude/projects/
Cursor
JSONL
~/.cursor/projects/*/agent-transcripts/
Codex CLI
JSONL
~/.codex/projects/
Aider
Markdown/JSONL
.aider.chat.history.md / .aider.llm.history in project dirs
Continue.dev
JSON
~/.continue/projects/
Cline
JSON
VS Code globalStorage saoudrizwan.claude-dev/tasks/
No configuration needed. Additional session roots can be added via the AGENT_KNOWLEDGE_EXTRA_SESSION_ROOTS env var (comma-separated paths).
Features
Host-agnostic session search -- unified search across every major AI coding assistant (Claude Code, Cursor, Codex CLI, Aider, Continue.dev, Cline, OpenCode). No host name is baked into configuration — the adapter registry probes installed host roots at startup.
Git-synced knowledge base -- markdown vault with YAML frontmatter, auto commit and push on writes
Automatic staleness detection -- knowledge_analyze(action: "stale_by_code_activity") cross-references file paths mentioned in each entry body against filesModified in recent session summaries. Pairs with a symbol-presence precision layer: identifiers the entry quotes (inline backticks + fenced blocks) are checked in the touched file; if they still exist, confidence downweights ×0.3. Entries with evergreen: true are exempt.
Search-gap tracking -- knowledge_analyze(action: "search_gaps") surfaces zero-result queries over the last since_days, grouped by token-Jaccard similarity. The clearest signal for "what entries should I write next?".
Section-priority context packer -- knowledge(action: "wakeup") assembles a multi-section bundle (identity → active_tasks → recent_decisions → known_gotchas → last_session_summary → top_weighted → semantic_fallback) within a token budget (default 800, override via token_budget or AGENT_KNOWLEDGE_WAKEUP_BUDGET). Unused section budget redistributes to later sections.
Scored + gated promoter -- session insights promoted via a 6-signal weighted scorer with three independent gates (minScore, minRecallCount, minUniqueQueries). Runs automatically in background, on demand via knowledge_admin(action: "promote"), or benchable offline via npm run bench:promote. Emits an auditable .dreams/YYYY-MM-DD.md diary every run.
Pluggable adapter system -- add support for new tools by implementing the SessionAdapter interface
Embeddings -- local (Hugging Face), OpenAI, Claude/Voyage, or Gemini providers
Fuzzy matching -- typo-tolerant search using Levenshtein distance
Evergreen entries -- evergreen: true in frontmatter exempts an entry from decay in ranking AND makes it append-only under promotion. The /knowledge pane marks them.
Author attribution -- optional author: <string> frontmatter, kept with the entry and returned by the REST API.
Code graph resolution -- calls, imports, inherits edge types for code structure; directed BFS traversal (outbound/inbound/both); bulk_link for efficient ingestion; unlink_by_origin for clearing stale code edges before re-ingest; code: prefixed node IDs distinguish code from knowledge
Temporal knowledge graph -- edges support valid_from / valid_to validity windows; as_of queries return point-in-time snapshots; invalidate action marks facts as ended without deleting them
Hybrid scoring boosts -- proper-noun and temporal-proximity boosts on top of TF-IDF + semantic blend, capped at +66.7%, short-circuit when no signals are present
Category as boost (not filter) -- opt into category_mode: "boost" so a wrong category guess down-ranks instead of discarding the right answer
Verbatim session indexing -- per-message chunks (≥30 chars) embedded into the vector store so raw conversation is retrievable; toggle with AGENT_KNOWLEDGE_INDEX_VERBATIM=false
Configurable git URL -- knowledge_admin(action: "config") for runtime setup, persisted at XDG/AppData location
Cross-machine persistence -- knowledge syncs via git, sessions read from local storage of each tool
/knowledge pane in Claude Code -- browse and search the knowledge base beside the conversation (agent-knowledge plugin)
Secrets scrubbing -- API keys, tokens, passwords, private keys automatically redacted before git push
Knowledge graph -- relationship edges between entries (related_to, supersedes, depends_on, contradicts, specializes, part_of, alternative_to, builds_on) with BFS traversal
Confidence/decay scoring -- entries scored by access frequency and recency; auto-promotion from candidate to established to proven
Memory consolidation -- TF-IDF duplicate detection on write (warns of similar entries) plus knowledge_analyze(action: "consolidate") for batch dedup scanning
Reflection cycle -- knowledge_analyze(action: "reflect") surfaces unconnected entries and generates structured prompts for the agent to identify new graph connections
Auto-linking on write -- new entries automatically linked to top-3 similar existing entries when cosine similarity > 0.7
Confidence metadata — entries tagged extracted (user-written) or inferred (auto-distilled, 0.85× search rank multiplier); confidence_score field carries the model's certainty 0-1
Knowledge brief — knowledge_analyze(action: "brief") returns a cached ~200 token summary (core concepts, active projects, recent decisions, stale and gap counts) for session-start orientation
Edge provenance — graph edges track origin (manual, auto-link, distill, reflect) so analysis can distinguish user judgment from automated heuristics
Deterministic pre-extraction in distillation — session summaries now include git commits, error patterns, URLs accessed, and packages changed extracted via regex from bash/tool output (no LLM cost)
Freshness metadata on every search hit — every knowledge result carries freshness: { body_age_days, last_accessed, access_count, verified_at, verification_age_days, evergreen }. Agent reads the trust signal and decides; we impose no policy demotion.
Per-category decay windows — the "Unused" filter and bytype chart honor per-category thresholds (projects 180d, people 365d, decisions 90d, workflows 60d, notes 30d) so identity-shaped content doesn't look stale just because it isn't re-read weekly.
Lifecycle hooks — SessionStart auto-wakeup + ingest-freshness check, UserPromptSubmit first-prompt targeted injection, PreCompact memory-flush nudge + distill, SessionEnd distill. Six hook scripts total, all fail-open, each toggleable via an AGENT_KNOWLEDGE_* env var. See docs/HOOKS.md.
Replaces host auto-memory — on hosts with a per-session memory system (Claude Code's ~/.claude/projects/*/memory/, similar in other IDEs), route durable user facts and feedback to agent-knowledge instead. Auto-memory is machine-local and invisible to other machines; agent-knowledge is git-synced, cross-machine, searchable, and surfaces in wakeup. See the Claude Code integration note in docs/USER-MANUAL.md.
Codebase Ingestion
The knowledge-ingest skill populates or updates the knowledge base from a codebase directory. It uses tree-sitter for zero-token structural extraction (classes, functions, imports, call graphs, rationale comments), then clusters files into subsystems and creates knowledge entries + graph edges via existing MCP tools. Subsequent runs are incremental — only changed files are reprocessed.
The first MCP process also serves a local REST API on 127.0.0.1:3423 (what the hooks, the /knowledge pane and agent-tasks call); when it exits, another running session takes the port over.
See Setup Guide for client-specific instructions (Claude Code, Cursor, Windsurf, OpenCode).
Option 2: Claude Code plugin
claude plugin marketplace add keshrath/agent-knowledge
claude plugin install agent-knowledge@agent-knowledge
The plugin brings the MCP server, the knowledge-ingest skill and the /knowledge pane (Claude Code 2.1.289+).
Every project-level candidate is scored on six signals (relevance 0.30, frequency 0.24, query-diversity 0.15, recency 0.15, consolidation 0.10, conceptual-richness 0.06) and gated on minScore ≥ 0.5, minRecallCount ≥ 2, minUniqueQueries ≥ 2. All three gates must pass. Background auto-promotion is controlled by the same auto_distill config flag; invoke on demand with knowledge_admin(action: "promote").
promote_mode: "explain" (default) — score + gate candidates, write diary, DO NOT touch the KB.
promote_mode: "apply" — promote candidates that pass, write diary, git-commit.
Every run drops ~/agent-knowledge/.dreams/YYYY-MM-DD.md with per-candidate signal breakdowns and gate outcomes. The .-prefixed dir is git-tracked but excluded from list/search.
Grounded rehydration: a candidate is skipped if its source session file no longer exists on disk (prevents promoting deleted content).
Entries with evergreen: true frontmatter are never overwritten by promotion — activity is appended.
Write-bench harness: npm run bench:promote — offline replay with auto-labeling by "referenced in later sessions". Compares gated promoter to a naive "ship all" baseline, reports precision / recall / F1. Use it to gate signal-weight or threshold changes before rolling them out.
REST API
Loopback only (127.0.0.1), JSON only. Every request goes through a guard: a foreign Host or any Origin header gets 403, a request body must be application/json. A :path with a slash is sent encoded (notes%2Fx.md).
Method
Endpoint
Caller
Description
GET
/health
pane, hooks
Status, version, entry count
GET
/api/overview
/knowledge pane
Counts, categories, recent events
GET
/api/knowledge?category=&tag=
pane
List entries with their scoring
GET
/api/knowledge/search?q=&max_results=
pane, opencode plugin
Search the knowledge base
GET
/api/knowledge/:path
pane
Read one entry
GET
/api/knowledge/:path/links
pane
The entry's graph edges, each with the other end's title
DELETE
/api/knowledge/:path
pane
Delete an entry (git synced)
POST
/api/knowledge
agent-tasks KnowledgeBridge
Write an entry (full write pipeline)
POST
/api/knowledge/sync
pane
git pull + push
GET
/api/analysis
pane
Hubs and isolated entries
GET
/api/sessions?limit=&offset=&project=
pane
Sessions, paged: { sessions, total }
GET
/api/sessions/search?q=&role=
pane
Search sessions
GET
/api/sessions/:id/summary
pane
Session summary
POST
/api/events
sessionend-distill hook
A receipt the pane shows
Architecture
graph LR
subgraph Storage
KB[(Knowledge Base<br/>~/agent-knowledge<br/>Git Repository)]
end
subgraph Session Sources
CC[(Claude Code<br/>JSONL)]
CU[(Cursor<br/>JSONL)]
OC[(OpenCode<br/>SQLite)]
CL[(Cline<br/>JSON)]
CD[(Continue.dev<br/>JSON)]
AI[(Aider<br/>MD / JSONL)]
end
subgraph agent-knowledge
KM[Knowledge Module<br/>store / search / git]
AD[Session Adapters<br/>auto-discovery]
SE[Search Engine<br/>TF-IDF + Fuzzy]
DS[REST API<br/>127.0.0.1:3423]
MCP[MCP Server<br/>stdio]
end
subgraph Clients
AG[Agent Sessions]
PN["/knowledge pane<br/>hooks, agent-tasks"]
end
KB <-->|git pull/push| KM
CC --> AD
CU --> AD
OC --> AD
CL --> AD
CD --> AD
AI --> AD
AD --> SE
KM --> MCP
SE --> MCP
KM --> DS
SE --> DS
MCP --> AG
DS --> PN
Knowledge Graph
Entries and code symbols can be connected via typed, weighted edges stored in a dedicated edges SQLite table. Eleven relationship types are supported — 8 for knowledge edges and 3 for code structure:
knowledge_graph(action: "link") creates or updates an edge (with optional strength 0-1)
knowledge_graph(action: "unlink") removes edges (optionally filtered by type)
knowledge_graph(action: "list") lists edges for an entry or relationship type
knowledge_graph(action: "traverse") performs directed BFS traversal from a starting entry. Supports direction (outbound, inbound, both) and rel_type filter
knowledge_graph(action: "bulk_link") batch-creates edges in a single transaction (for code graph ingestion)
knowledge_graph(action: "unlink_by_origin") deletes all edges with a specific origin (for clearing stale code edges before re-ingest)
Code Graph
Code structure edges are created by the knowledge-ingest skill during codebase ingestion. They use code: prefixed node IDs:
code:src/auth/middleware.ts # file node
code:src/auth/middleware.ts::validateToken # symbol node
When knowledge with action: "write" creates or updates an entry, it automatically finds the top-3 most similar existing entries via cosine similarity and creates related_to edges for any pair scoring above 0.7.
Confidence & Decay Scoring
Each knowledge entry has a confidence score tracked in the entry_scores SQLite table. Search results are ranked using:
Scoped Recall via knowledge_search with the scope parameter:
Scope
Matches
errors
Stack traces, exceptions, failed commands
plans
Architecture, TODOs, implementation steps
configs
Settings, env vars, configuration files
tools
MCP tool calls, CLI commands
files
File paths, modifications
decisions
Trade-offs, rationale, choices
Integrations
REST Write Endpoint
POST /api/knowledge accepts { category, filename, content } and runs the full write pipeline: git pull → file write → embedding index → auto-link → git push → duplicate check. Returns { path, autoLinks?, duplicateWarnings?, git } with status 201.
This enables HTTP-based writes from other services without an MCP connection.
agent-tasks KnowledgeBridge
agent-tasks has a built-in KnowledgeBridge that auto-pushes learning and decision artifacts to agent-knowledge on task completion. Entries land in decisions/ with frontmatter tags (agent-tasks, project name, artifact type), are auto-indexed with embeddings, and auto-linked to similar entries. No configuration needed: while any session runs agent-knowledge, its REST API on 127.0.0.1:3423 answers.
Testing
npm test # 604 tests across 39 files
npm run test:watch # Watch mode
npm run lint # ESLint on src/ and tests/
npm run typecheck # tsc --noEmit
npm run check # typecheck + lint + format + test
Environment Variables
All env vars live under the AGENT_KNOWLEDGE_* prefix. No host name is baked in — the adapter registry auto-detects installed AI coding hosts (.claude, .cursor, .codex, .aider, .continue, OpenCode) without configuration.
Core
Variable
Default
Description
AGENT_KNOWLEDGE_MEMORY_DIR
~/agent-knowledge
Git-synced knowledge base directory
AGENT_KNOWLEDGE_GIT_URL
--
Git remote URL (auto-clones if dir missing)
AGENT_KNOWLEDGE_AUTO_DISTILL
true
Auto-distill session insights into the knowledge base
AGENT_KNOWLEDGE_INDEX_VERBATIM
true
Index raw session message chunks into the vector store so conversation is retrievable later. Set false to save disk at scale.
AGENT_KNOWLEDGE_DATA_DIR
(platform config)
Override the primary host data root. Leave unset in the common case — adapters auto-detect every well-known host root under ~/.
AGENT_KNOWLEDGE_EXTRA_SESSION_ROOTS
--
Extra session directories, comma-separated. Added to whatever auto-detection finds.
AGENT_KNOWLEDGE_PORT
3423
Local REST API port (the /knowledge pane, hooks, agent-tasks)
AGENT_KNOWLEDGE_HOST
127.0.0.1
REST bind address
Embeddings
Variable
Default
Description
AGENT_KNOWLEDGE_EMBEDDING_PROVIDER
local
local | openai | claude | gemini
AGENT_KNOWLEDGE_EMBEDDING_ALPHA
0.3
TF-IDF vs semantic blend weight (0 = pure semantic, 1 = pure TF-IDF)
AGENT_KNOWLEDGE_EMBEDDING_MODEL
--
Override provider default model
AGENT_KNOWLEDGE_EMBEDDING_IDLE_TIMEOUT
60
Seconds before unloading the local model (0 = keep loaded)
AGENT_KNOWLEDGE_EMBEDDING_THREADS
(auto)
ONNX / OMP thread count for the local provider
API keys
Project-scoped overrides win over the standard keys. Set either; the scoped form lets you run agent-knowledge with a different key than the rest of your environment.
Variable
Fallback
Description
AGENT_KNOWLEDGE_OPENAI_API_KEY
OPENAI_API_KEY
OpenAI embeddings
AGENT_KNOWLEDGE_ANTHROPIC_API_KEY
ANTHROPIC_API_KEY
Claude / Voyage embeddings
AGENT_KNOWLEDGE_GEMINI_API_KEY
GEMINI_API_KEY
Gemini embeddings
Hooks
Variable
Default
Description
AGENT_KNOWLEDGE_AUTOWAKE
1
Auto-inject a knowledge(action: wakeup) bundle into SessionStart. Set 0 to disable.
AGENT_KNOWLEDGE_WAKEUP_BUDGET
800
Tokens for the wakeup bundle
AGENT_KNOWLEDGE_FIRSTPROMPT_INJECT
1
Run a targeted knowledge_search on the first user prompt and inject top hits. 0 / false / off to disable.
AGENT_KNOWLEDGE_FIRSTPROMPT_BUDGET
600
Tokens for first-prompt injection (clamp [100, 8000])
AGENT_KNOWLEDGE_FIRSTPROMPT_MAX_HITS
4
Max knowledge hits attached to the first prompt (clamp [1, 20])
AGENT_KNOWLEDGE_PRECOMPACT_NUDGE
1
Before pre-compaction, nudge the agent to save context via knowledge(action: write). 0 disables the nudge; off suppresses both nudge and disk dump.
External tool overrides
Variable
Default
Description
OPENCODE_DATA_DIR
~/.local/share/opencode
Override where OpenCode's session DB lives (OpenCode's own env, honored by our adapter)
คัดลอกคอนฟิก stdio สำหรับ Cursor, Claude Desktop, Claude Code หรือ VS Code ได้ในหน้านี้ คอนฟิกนี้ใช้การติดตั้งของผู้เผยแพร่ ไม่ใช่พร็อกซีของ PlugMCP
Agent Knowledge ต้องใช้ API key ไหม?
ระเบียนนี้ไม่ได้ระบุตัวแปรสภาพแวดล้อมที่จำเป็น
Agent Knowledge ใช้ทรานสปอร์ตแบบใด?
Agent Knowledge ทำงานแบบโลคัลผ่าน stdio
Agent Knowledge ถูกตรวจสอบล่าสุดเมื่อใด?
ตรวจสอบล่าสุดเมื่อ 2026-10-28 Cross-session memory and recall for AI agents — git-synced knowledge base, hybrid semantic+TF-IDF search, auto-distillation with secrets scrubbing