OpenSEO
Keyword research, site audits, rank tracking and AI visibility for your AI agent.
Runs in the cloud✓ everyapp.com
Akb
What it does
Git-backed org memory for AI agents — hybrid search, tables, files & a URI graph over MCP.
- Connects Runs on your computer
- Account or key Needs AKB_PAT · 1 setting to fill in (AKB_MCP_URL)
- Category Search & AI memory
Install
Pick the AI app you use, then copy the settings.
Passed 2/3 checks · Runs on your computer · ✓ Commands checked Nov 13, 2026
First: which AI do you use?
Pick your app and the steps appear below.
Works with Claude, with some setup first
You need a Akb key (create it on the maker’s site) · 1 setting(s) to fill in (AKB_MCP_URL) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Let AI install it
Copy this message into a Claude chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.
Please install the MCP server Akb for Claude on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "akb": { "command": "npx", "args": [ "-y", "akb-mcp" ], "env": { "AKB_MCP_URL": "your-value", "AKB_PAT": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For AKB_PAT, AKB_MCP_URL, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Akb tools really show up.This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number:
node -vInstall once; it works for everything that needs Node.js
Sign up and create a Akb key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Fill in 1 setting(s)
These are program settings, not keys. No sign-up needed; fill them in as the maker describes.
AKB_MCP_URLYour AKB backend MCP endpoint, e.g. https://akb.example.com/mcp/ — or try the public demo at https://akb-demo.agent.seahorse.dnotitia.ai/mcp/
Descriptions are as written by the maker.
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Paste these settings and save the file
{ "mcpServers": { "akb": { "command": "npx", "args": [ "-y", "akb-mcp" ], "env": { "AKB_MCP_URL": "your-value", "AKB_PAT": "your-value" } } } }Paste the key only into the app’s field, never into a chat or to anyone
Quit Claude and open it again
Try it
Use Akb and tell me what you can do for me, then show me one thing✓ If Claude says it is using Akb or shows a Akb tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
ChatGPT cannot connect Akb yet
Akb runs on your computer, but ChatGPT can only connect servers that run on the web
What you can do instead
A · Use an app that can connect Akb
- You need a Akb key (create it on the maker’s site) · 1 setting(s) to fill in (AKB_MCP_URL) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
- You need a Akb key (create it on the maker’s site) · 1 setting(s) to fill in (AKB_MCP_URL) · Install Node.js on your computer first (one time)
- You need a Akb key (create it on the maker’s site) · 1 setting(s) to fill in (AKB_MCP_URL) · Install Node.js on your computer first (one time)
- You need a Akb key (create it on the maker’s site) · 1 setting(s) to fill in (AKB_MCP_URL) · Install Node.js on your computer first (one time)
Works with Claude Code, with some setup first
You need a Akb key (create it on the maker’s site) · 1 setting(s) to fill in (AKB_MCP_URL) · Install Node.js on your computer first (one time)
Let AI install it
Copy this message into a Claude Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.
Please install the MCP server Akb for Claude Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): claude mcp add --scope user akb --env AKB_MCP_URL=your-value --env AKB_PAT=your-value -- npx -y akb-mcp 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For AKB_PAT, AKB_MCP_URL, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Akb tools really show up.This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number:
node -vInstall once; it works for everything that needs Node.js
Sign up and create a Akb key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Fill in 1 setting(s)
These are program settings, not keys. No sign-up needed; fill them in as the maker describes.
AKB_MCP_URLYour AKB backend MCP endpoint, e.g. https://akb.example.com/mcp/ — or try the public demo at https://akb-demo.agent.seahorse.dnotitia.ai/mcp/
Descriptions are as written by the maker.
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Paste this command and press Enter
claude mcp add --scope user akb --env AKB_MCP_URL=your-value --env AKB_PAT=your-value -- npx -y akb-mcpReplace “your-value” with your key before pressing Enter
Paste the key only into the app’s field, never into a chat or to anyone
Type /mcp in Claude Code
You should see Akb listed as connected
Try it
Use Akb and tell me what you can do for me, then show me one thing✓ If Claude Code says it is using Akb or shows a Akb tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Cursor, with some setup first
You need a Akb key (create it on the maker’s site) · 1 setting(s) to fill in (AKB_MCP_URL) · Install Node.js on your computer first (one time)
Let AI install it
Copy this message into a Cursor chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.
Please install the MCP server Akb for Cursor on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "akb": { "command": "npx", "args": [ "-y", "akb-mcp" ], "env": { "AKB_MCP_URL": "your-value", "AKB_PAT": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For AKB_PAT, AKB_MCP_URL, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Akb tools really show up.This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number:
node -vInstall once; it works for everything that needs Node.js
Sign up and create a Akb key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Fill in 1 setting(s)
These are program settings, not keys. No sign-up needed; fill them in as the maker describes.
AKB_MCP_URLYour AKB backend MCP endpoint, e.g. https://akb.example.com/mcp/ — or try the public demo at https://akb-demo.agent.seahorse.dnotitia.ai/mcp/
Descriptions are as written by the maker.
Fill in your key
In the Akb settings, AKB_PAT, AKB_MCP_URL is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Open the AI chat in Cursor in Agent mode
Try it
Use Akb and tell me what you can do for me, then show me one thing✓ If Cursor says it is using Akb or shows a Akb tool in the answer, you are connected
Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with VS Code, with some setup first
You need a Akb key (create it on the maker’s site) · 1 setting(s) to fill in (AKB_MCP_URL) · Install Node.js on your computer first (one time)
Let AI install it
Copy this message into a VS Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.
Please install the MCP server Akb for VS Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "servers": { "akb": { "type": "stdio", "command": "npx", "args": [ "-y", "akb-mcp" ], "env": { "AKB_MCP_URL": "your-value", "AKB_PAT": "your-value" } } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) For AKB_PAT, AKB_MCP_URL, leave "your-value" in place and tell me to paste the real value myself into the file or the app’s field. Never ask me to type a key in chat. 5) Do what we agreed, then check that the Akb tools really show up.This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number:
node -vInstall once; it works for everything that needs Node.js
Sign up and create a Akb key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Fill in 1 setting(s)
These are program settings, not keys. No sign-up needed; fill them in as the maker describes.
AKB_MCP_URLYour AKB backend MCP endpoint, e.g. https://akb.example.com/mcp/ — or try the public demo at https://akb-demo.agent.seahorse.dnotitia.ai/mcp/
Descriptions are as written by the maker.
Fill in your key
In the Akb settings, AKB_PAT, AKB_MCP_URL is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Open the AI chat in VS Code in Agent mode
Try it
Use Akb and tell me what you can do for me, then show me one thing✓ If VS Code says it is using Akb or shows a Akb tool in the answer, you are connected
Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.
JSON settings are under “For developers” below
For developers: Terminal commands and JSON settings
Installed on your computer
Claude Code
claude mcp add --scope user akb --env AKB_MCP_URL=your-value --env AKB_PAT=your-value -- npx -y akb-mcpClaude Desktop (claude_desktop_config.json)
{
"mcpServers": {
"akb": {
"command": "npx",
"args": [
"-y",
"akb-mcp"
],
"env": {
"AKB_MCP_URL": "your-value",
"AKB_PAT": "your-value"
}
}
}
}Cursor (~/.cursor/mcp.json)
{
"mcpServers": {
"akb": {
"command": "npx",
"args": [
"-y",
"akb-mcp"
],
"env": {
"AKB_MCP_URL": "your-value",
"AKB_PAT": "your-value"
}
}
}
}VS Code (mcp.json)
{
"servers": {
"akb": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"akb-mcp"
],
"env": {
"AKB_MCP_URL": "your-value",
"AKB_PAT": "your-value"
}
}
}
}Values you fill in
AKB_MCP_URLrequired envYour AKB backend MCP endpoint, e.g. https://akb.example.com/mcp/ — or try the public demo at https://akb-demo.agent.seahorse.dnotitia.ai/mcp/AKB_PATsecret required envAKB Personal Access Token (akb_...). Create one in your AKB instance, or sign up on the public demo with any email to get one.
Descriptions are as written by the maker.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
At a glance
Which apps can use it
Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.
Run on your computer in
ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatRaycast
Related guides
What it can do
Runs on your computer; the tool list appears in your AI app after you install it.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 15, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account dnotitia, which owns the repo
- ✓ Pass
Still maintained
Code last changed 2 days ago
- ! Caution
Has a licence
GitHub could not identify the licence type; open the file to check
- – Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
- – Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
- … Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints
Published vulnerabilities (OSV.dev)
No entries on OSV.dev for akb-mcp@2.0.4
Checks only this package version, not every dependency · checked Nov 15, 2026
Makers: ask for a re-check or report wrong info
Discussion
Ask, share a tip or report that it does not work. Sorted by what people marked helpful.
No posts yet. Be the first to ask or share.
Posts here are written by users, not the PopNx team.
User reviews
No reviews yet
Compared with others in Search & AI memoryi
- More stars than 98% of the other 6148 servers in this category
- Published to the registry more recently than 14% of the other 6148 servers in this category
- Basic checks equal to or better than 50% of the other 6148 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Akb safe?
It passed 2 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
You need to fill in: AKB_PAT
Does it run on my computer or in the cloud?
It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).
Is it still maintained?
The GitHub repo last changed 2 days ago, and the latest version (2.0.4) reached the registry 5 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
What can I use instead?
In the same category: OpenSEO, Exa, Mockserver, Microsoft Learn MCP, Docs
Similar alternatives
Same category, other makers, commands already checked. Official ones first, then by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Exa
Connect AI agents to Exa for web search, content fetching, and multi-step research.
Runs in the cloud✓ service owner · exa.aiTried by the PopNx team
Mockserver
Mock, record/replay, verify and chaos-test any HTTP, REST, gRPC or LLM dependency over MCP.
Runs on your computer✓ service owner · mock-server.com
Microsoft Learn MCP
Official Microsoft Learn MCP Server – real-time, trusted docs & code samples for AI and LLMs.
Runs in the cloud✓ service owner · microsoft.comTried by the PopNx team
Docs
Search and read Empryo's documentation. Read-only, no auth, no local access.
Runs in the cloud✓ empryo.com
- OpenSEO — Runs in the cloud, nothing to install · No key needed
- Exa — Runs in the cloud, nothing to install · No key needed · In Claude’s directory
- Mockserver — Installs on your computer · No key needed
- Microsoft Learn MCP — Runs in the cloud, nothing to install · No key needed · In Claude’s directory
- Docs — Runs in the cloud, nothing to install · No key needed
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
AKB — Agent Knowledge Base
Organizational memory for AI agents. PostgreSQL-native knowledge base served
over the Model Context Protocol (MCP) — agents read and write directly
with hybrid semantic + keyword search, structured tables, files, and a URI
graph. Drop-in alternative to Confluence / Notion for Claude Code, Cursor,
Windsurf, and any MCP-aware agent.
Works with
Any agent client that speaks MCP (Streamable HTTP or stdio):
- Claude Code — CLI / VS Code / JetBrains
- Claude Desktop — macOS / Windows
- Cursor, Windsurf, Cline, Continue — via the
akb-mcpstdio proxy - Custom agents — direct HTTP
POST /mcp/with a Bearer token
The default flow uses a Personal Access Token. Deployments with the optional MCP OAuth Resource Server path turned on (via Keycloak as the AS — see docs/mcp-clients/web-connectors.md) also accept Claude Code's mcp add --transport http + mcp login flow end-to-end, without a PAT.
MCP protocol compatibility
AKB keeps one tool and authorization core behind two protocol adapters:
| Surface | Modern | Legacy |
|---|---|---|
Direct HTTP /mcp/ | 2026-07-28 stateless server/discover and per-request _meta with Mcp-Protocol-Version / Mcp-Method (and Mcp-Name for named calls) | 2024-11-05, 2025-03-26, 2025-06-18, 2025-11-25 initialize, stateless requests (no Mcp-Session-Id lifecycle) |
akb-mcp stdio proxy | 2026-07-28 discovery and per-request metadata | 2025-06-18 initialize |
The proxy answers either handshake locally and normalizes backend calls to the modern stateless contract when available. For older backends without modern discovery, the proxy can fall back to legacy initialization and retain a session ID if that older server returns one. The current backend runs both adapters statelessly. A process cannot mix generations, and unsupported revisions or conflicting protocol evidence fail closed before a tool or local-file operation runs.
Plugins
Beyond raw MCP access, AKB ships ready-made agent plugins for Claude Code and Codex that wrap common vault workflows:
- akb-wiki — ingest a source (local file, web URL, GitHub PR / release / commit, Confluence page, or Jira issue) into the vault as a structured document, and answer questions from the vault with grounded, cited synthesis (read-only).
- akb-sessions — capture a coding session as structured notes: a session report plus follow-up tasks, learnings, ideas, and decisions.
- akb-claude-code — a Claude Code lifecycle bridge: hooks anchor each session to your AKB memory vault, injecting preferences and recent learnings at the start and writing a recap at the end.
/plugin marketplace add dnotitia/akb # Claude Codecodex plugin marketplace add dnotitia/akb # Codex
Install details and credentials: plugins/.
Try it live
A public demo runs at [akb-demo.agent.seahorse.dnotitia.ai](https://akb-demo.agent.seahorse.dnotitia.ai). Browse and search a small fictional-organization knowledge base — product docs, a company handbook, agent session notes, and an engineering wiki, cross-linked by the URI graph — right in your browser, no signup. To wire it into your own agent, sign up with any email (a throwaway address is fine) and point the akb-mcp proxy at https://akb-demo.agent.seahorse.dnotitia.ai/mcp/.
⚠️ Throwaway demo. It is public, wiped and re-seeded weekly, and runs on
minimal resources with no uptime, privacy, or data guarantees. Don't put
anything real or sensitive in it — treat every write as public and ephemeral.
For real use, self-host with Docker Compose or Kubernetes.
Why AKB
Most knowledge tools are built for humans clicking through a UI. Agents need a different shape: structured documents, semantic + keyword search in one call, explicit relations, and full version history. AKB gives agents a single set of tools (akb_put, akb_search, akb_browse, akb_relations, …) over a PostgreSQL-native revision store and hybrid index. Explicit Bare Git installations remain supported for existing deployments.
Retrieval quality
Memory is only useful if the right note comes back. AKB's hybrid retrieval (dense + BM25, source-level dedup) was benchmarked on LongMemEval-S — 500 long-context questions, ~50 chat sessions per question. Recall@5 = 98.4%, with no reranker in the loop.
| System | R@5 | n | Reranker | Source |
|---|---|---|---|---|
| AKB hybrid | 98.4% | 500 | no | this repo |
| MemPalace hybrid + rerank | 98.4% | 450 | yes | MemPalace |
| gbrain hybrid | 97.6% | 500 | no | gbrain-evals |
| gbrain vector | 97.4% | 500 | no | gbrain-evals |
Methodology, per-category breakdown, and a one-command reproducible harness live in eval/longmemeval/. The embedding model differs across systems (AKB: bge-m3@1024), so read this as a stack-level comparison.
Design philosophy
Core stays small; flexibility comes from extension, not built-in automation. AKB does not ship its own consolidator, summariser, or "knowledge gardener" — instead every write records a structured event in the PostgreSQL outbox. When redis_url is configured, the publisher fans those events out to a Redis Stream (akb:events). Operators wire any external consumer (periodic synthesis bot, doc-rot reaper, weekly-digest agent, audit trail, …) on top, with no patches to the core. The base contract is a read/write store; opinions about *what to do with* the knowledge live outside.
Architecture
┌──────────────────────────────────────────────────────────┐│ Access Layer │ │ MCP Server │ REST API │ Web UI │ ├──────────────────────────────────────────────────────────┤ │ Core Services │ │ Document (Put/Get) │ Search (Hybrid: dense+BM25) │ │ Relations (graph) │ Session │ Publications │ ├──────────────────────────────────────────────────────────┤ │ Storage Layer │ │ Native revisions │ PostgreSQL 16 (text + meta SoT)│ │ │ Vector store (driver): │ │ │ pgvector (default, PG)│ │ │ qdrant (optional) │ │ │ seahorse-cloud (managed) │ │ │ seahorse-db (self-hosted)│ │ │ seahorse-db-grpc(experimental)│ └──────────────────────────────────────────────────────────┘
PostgreSQL is the source of truth — chunk text + metadata + BM25 vocab. The vector store is a driver-pluggable derived index holding dense embeddings and corpus-side sparse vectors. Full vector-store loss is recoverable from PG by setting chunks.vector_indexed_at = NULL and letting the indexing worker re-populate.
Key Concepts
- Vault — The unit of access control and knowledge organization. Native revisions live in PostgreSQL; the legacy backend uses one bare Git repo per vault.
- Collection — A directory inside a vault. Topical grouping of documents.
- Document — Markdown + YAML frontmatter, optimised for agent read/write.
- Hybrid Search — Dense (semantic) + BM25 (lexical) fused via RRF in one call.
- Relations —
depends_on,related_to,implementsin frontmatter form an explicit knowledge graph. - Vault isolation in `akb_sql` — Enforced by PostgreSQL ACL. Each AKB user has a corresponding PG role (
akb_user_) and each vault has three group roles (akb_vault_ _{reader,writer,admin}).akb_sqlruns the user's SQL inside a transaction withSET LOCAL ROLE; cross-vault references return PG42501directly. No application-side regex inspects user SQL for forbidden identifiers. Seedocs/designs/pg-native-rbac/.
MCP Tools (selection)
| Tool | Description |
|---|---|
akb_list_vaults / akb_create_vault | Vault management |
akb_put / akb_get / akb_update / akb_delete | Document CRUD (revision + indexing) |
akb_put_file / akb_get_file / akb_update_file / akb_delete_file | File attachments — proxy-side (requires local filesystem) |
akb_put_image / akb_discard_image | Validated inline Markdown images — proxy-side in akb-mcp 2.2+ |
akb_create_table / akb_alter_table / akb_drop_table / akb_sql | Tabular content — per-doc tables + SQL |
akb_browse | Tree traversal (collection → docs) |
akb_search / akb_grep | Hybrid search (dense + BM25) / literal grep |
akb_drill_down | Section-level retrieval |
akb_relations / akb_link / akb_unlink / akb_graph | Knowledge graph |
akb_edit / akb_diff / akb_history | In-place edit, diff, revision history |
akb_grant / akb_revoke / akb_set_public | Permission boundaries — per-user, per-org, public |
akb_publish / akb_unpublish | Public publication |
Agent memory and session lifecycle are not MCP tools — they live on the dedicated /api/v1/agent-sessions REST surface, driven by AKB lifecycle plugins (akb-claude-code, akb-cursor, …) that hook into the agent's own SessionStart / PreCompact / SessionEnd events. As an agent, your own memory vault (agent-memory-{username}) is browsable through the standard akb_search / akb_browse / akb_get tools exactly like any other vault.
The full tool catalogue is exposed via akb_help() from any MCP client.
Inline document images from MCP
Inline images are hidden document attachments, not browsable Files. Upload a local PNG, JPEG, GIF, or WebP (maximum 10 MiB), then insert the returned Markdown without reconstructing its asset URL:
image = akb_put_image(parent="akb://eng/coll/specs", file_path="/workspace/architecture.png", alt_text="Request processing architecture")
akb_put( parent="akb://eng/coll/specs", title="Request Processing", content="# Architecture\n\n" + image.markdown)
For an existing document, use akb_get followed by a targeted akb_edit(base_commit=...). Do not pass only the image fragment to akb_update(content=...), which replaces the complete body. Image bytes are immutable: replacing an image means uploading a new one and editing the Markdown reference. Remove an image by deleting its Markdown expression; use akb_discard_image only for an upload that never reached a successful document commit. Run akb_help(topic="images") for retention and publication behavior.
The image tools require both the matching backend release and akb-mcp 2.2 or newer. For upgrades, deploy the backend first, then publish/install the proxy and restart existing MCP processes so they load the updated tool list.
Document Format
Every vault resource has a location-aware AKB URI — the canonical handle used by every tool and stored in relations. As of 0.3.0:
akb://{vault} vault root (browse target)akb://{vault}/coll/{coll_path} collection (browse target) akb://{vault}[/coll/{coll_path}]/doc/{filename} doc