ContextMemory MCP Server

ContextMemory Agentic Gateway

Give an LLM memory by swapping a URL. That same URL can also act when it needs to.

ContextMemory is a context and agent proxy for applications that already talk to LLMs. The public wire format is Ollama-compatible: you keep using POST /api/chat with the same message schema and get back an Ollama-style response (message.content / done) — not OpenAI choices[]. Behind the scenes, the gateway enriches each turn with session memory (a per-session markdown wiki), optional web search, and — when enabled — an agentic loop with tools isolated per tenant.

OpenAI, Azure OpenAI, Anthropic, and similar providers are supported as LLM backends; the gateway maps them to the Ollama response shape your client already reads.

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Don't want to self-host?

Kortexio Cloud is the hosted version of this gateway — same request body and response schema, zero infrastructure, bring your own LLM key (no markup on tokens). Get an API key and point your chat endpoint at it in minutes. Start free →

Self-hosting this open-source core and running on Kortexio Cloud share the same chat body and Ollama response. The only differences are the API key prefix and whether you send X-App-Id. Prototype locally, move to the cloud without rewriting your chat payload — or the other way around.

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Why it exists

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Two ways to run it

Both speak the same POST /api/chat contract. The only auth differences are the key prefix and whether you pass X-App-Id. Never choices[] — the response is always Ollama-style message.content / done.

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Quick start — Kortexio Cloud

The fastest path: no build, no database, no Ollama to run.

1. Get a key and connect your LLM (BYOK)

Create a free account at kortexio.io and copy your API key (starts with cmk_live_).

Kortexio Cloud is bring-your-own-key: Kortexio orchestrates memory and agentic — text generation always uses your provider. In your app's LLM provider tab on the dashboard, pick a provider (OpenAI, Azure OpenAI, Anthropic, your own Ollama, …), set the model id, and paste your own provider key — no markup on tokens. Use Test connection to verify it before you ship. The model you send in each request must match the one configured there.

2. Point your endpoint here

If you already call an Ollama-compatible POST /api/chat, change one URL and keep the same body and response parsing:

- POST http://localhost:11434/api/chat
+ POST https://api.kortexio.io/api/chat

Coming from the OpenAI Chat Completions API? Keep a similar message body, but parse the Ollama response (message.content / done), not choices[].

3. First chat request

# Turn 1 — teach it something
curl -X POST https://api.kortexio.io/api/chat \
  -H "Content-Type: application/json" \
  -H "X-User-Id: user-42" \
  -H "X-Session-Id: sess-abc" \
  -H "Authorization: Bearer cmk_live_..." \
  -d '{
    "model": "gpt-4o-mini",
    "messages": [{ "role": "user", "content": "Remember: KORTEX-PINEAPPLE" }]
  }'

# Turn 2 — same X-Session-Id, memory recalled automatically
curl -X POST https://api.kortexio.io/api/chat \
  -H "Content-Type: application/json" \
  -H "X-User-Id: user-42" \
  -H "X-Session-Id: sess-abc" \
  -H "Authorization: Bearer cmk_live_..." \
  -d '{
    "model": "gpt-4o-mini",
    "messages": [{ "role": "user", "content": "What was the secret word?" }]
  }'

Response (Ollama schema — same as self-host):

{
  "model": "gpt-4o-mini",
  "message": { "role": "assistant", "content": "The secret word is KORTEX-PINEAPPLE." },
  "done": true
}

That's the entire integration. Session memory works on the next turn automatically — no embeddings, no vector DB, no retrieval logic to write.

Required headers: X-User-Id, Authorization: Bearer cmk_live_...
Optional: X-Session-Id (generated by the API if omitted). Your tenant is inferred from the key — you do not send X-App-Id on Cloud.
model: required in the body, and it must match the provider/model you configured in the LLM provider tab (BYOK).

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Quick start — self-host

Run the open-source gateway yourself — the path for on-prem or fully local deployments. Unlike Cloud (where the dashboard wires up your LLM for you), here you point the gateway at your own LLM backend — endpoint and model — in config. Same chat body, same Ollama response as Cloud; you supply the X-App-Id and use a cm_live_ key.

Prerequisites

• .NET 9 SDK
• Ollama (or another configured backend) reachable on the network
• Optional: PostgreSQL 14+ for production / multi-instance HA

1. Configure

The committed appsettings.json uses safe placeholders and PersistenceProvider: File (no database required). Seed app id: demo-dev with key cm_live_dev_key_change_me (change before any real use).

Local secrets — choose one approach (never commit real values):

For PostgreSQL in production or multi-instance HA:

{
  "ConnectionStrings": {
    "ContextMemory": "Host=localhost;Port=5432;Database=contextmemory;Username=...;Password=..."
  },
  "ContextMemory": {
    "PersistenceProvider": "Postgres",
    "DataPath": "../../data",
    "OllamaEndpoint": "http://localhost:11434",
    "MasterKey": "your-master-key",
    "Apps": {
      "my-app": {
        "ApiKey": "cm_live_...",
        "SystemPrompt": "You are a helpful assistant.",
        "LlmModel": "qwen3.5:9b"
      }
    }
  }
}

Use "Postgres" exactly (not Postgresql). Relative DataPath values resolve from the API content root.

appsettings.json field reference

Per-app runtime settings (agentic tools, wiki schema, web-search toggles, guardrails) are managed via the admin API or Admin UI host, not only this seed section.

2. Start the API

cd src/ContextMemory.Api
dotnet run

API defaults to http://localhost:5100 (Swagger in Development at /swagger).

3. First chat request

curl -X POST http://localhost:5100/api/chat \
  -H "Content-Type: application/json" \
  -H "X-App-Id: demo-dev" \
  -H "X-User-Id: user-123" \
  -H "X-Session-Id: sess-abc" \
  -H "Authorization: Bearer cm_live_dev_key_change_me" \
  -d '{
    "model": "qwen3.5:9b",
    "messages": [{ "role": "user", "content": "Hi, do you remember my name?" }]
  }'

Response (Ollama schema — identical to Cloud):

{
  "model": "qwen3.5:9b",
  "message": { "role": "assistant", "content": "..." },
  "done": true,
  "context_memory": {
    "message_id": "...",
    "agentic": {
      "phase": "Completed",
      "awaiting_confirmation": false,
      "steps": [{ "tool_name": "shell_execute", "success": true }]
    }
  }
}

Required headers: X-App-Id, X-User-Id, Authorization: Bearer {API_KEY}
Optional: X-Session-Id (generated by the API if omitted).

4. Admin UI and Chat Lab

In a second terminal:

cd src/ContextMemory.Admin.Web
dotnet run

Open http://localhost:5200 → Settings → set API URL http://localhost:5100 and your Master Key (ContextMemory:MasterKey) → Test connection.

• Applications — register apps, stats, rotate API keys
• Apps → Config — LLM, wiki, web search, rate limits, Agentic Gateway
• Chat Lab — streaming, agentic timeline, human confirmation

The API also serves a short HTML pointer at http://localhost:5100/admin. Admin HTTP APIs still require the Master Key bearer token.

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Architecture in 30 seconds

Your app (Ollama-compatible client)
        │
        ▼ POST /api/chat
┌───────────────────────────────────────────┐
│  ContextMemory Gateway (.NET 9)           │
│  1. Auth + tenant (API key, X-App-Id)     │
│  2. Memory: history + session wiki        │
│  3. Web search (optional)                 │
│  4. Agentic loop (if enabled)             │
│     LLM ↔ tools ↔ validation ↔ HITL       │
│  5. Ollama-schema response                │
└───────────┬───────────────┬───────────────┘
            ▼               ▼
     ACA / self-hosted   MCP Servers
     sandbox (shell/     (Zuora, Jira, …)
     python/node/custom) JSON-RPC + OAuth

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Features

Contextual memory (core)

• Per-session wiki — Markdown pages, index, execution log, and schema; automatic compaction as volume grows.
• Recent history — last N messages injected into the prompt (configurable per tenant).
• Persona and rules — basePersona, businessRules, formatRules, wikiSchema per application.
• Zero client changes for memory — send only the new message; the gateway builds the full prompt.

Agentic Gateway

• Same endpoint — POST /api/chat; enabled via agentic.enabled in tenant config.
• Orchestrator — loop with iteration cap, configurable timeout, and validation before returning the final answer.
• Execution tools
  • ACA Dynamic Sessions: shell_execute, python_execute, node_execute, container_execute (custom image)
  • Self-hosted sandbox (self-hosted-sandbox): same tool names against your own gVisor/sandbox endpoint
• Integration tools (MCP)
  • Dynamic catalog per configured MCP server
  • Qualified naming server__tool
  • mcp_servers pass-through for backends that support it natively
  • Authentication: bearer, api-key, or per-tenant OAuth client-credentials
• Per-tenant guardrails
  • maxIterations, loopTimeoutSeconds
  • requireConfirmationFor — keywords that trigger HITL before execution
  • networkEgress: restricted — blocks external endpoints except allowlist/allowEgress
  • validationMode: deterministic | hybrid | llm-judge
  • requireZeroExitCode, expectedAnswerPatterns (regex), blockedAnswerPatterns
  • humanReviewOnMaxIterations — human review when the loop exhausts iterations
• Human-in-the-loop
  • Blocks before destructive tools; state persisted per session
  • Response includes [CONFIRM:id]; user confirms with natural language or explicit token
  • Checkpoint in session wiki log.md (agentic-checkpoint)
  • Human review of partial answers when max iterations is reached
• Prompt profiles — auto, ollama, openai, claude for system prompts, tool descriptions, and observations tuned to backend/model.

Streaming and latency

• With stream: true, tool calls and internal observations do not leak into the text stream.
• The final answer is emitted in chunks after the loop completes (or times out).
• Agentic progress metadata via context_memory.agentic.
• Timeout with graceful partial response + header X-Context-Memory-Agentic-Timed-Out.

Web search

• Providers: Tavily, Brave
• Modes: heuristic, llm, always, off
• Ephemeral context in the prompt; optional persistence of facts to the wiki
• Response headers: X-Web-Search-Used, X-Web-Search-Provider, etc.

Multi-tenant and operations

• Isolated apps — API key, config, tools, and guardrails per appId
• Rate limiting — RPM/TPM per app and per user; extra weight for agentic turns
• Telemetry — requests, tokens, latency, wiki, web search, active users
• Admin — Blazor console at ContextMemory.Admin.Web (:5200), HTTP admin API, HTML pointer at /admin
• Persistence
  • File — development and single-node
  • Postgres — apps, profiles, sessions/wiki, and HITL state in JSONB (multi-instance HA)

Supported LLM backends

• Ollama (default)
• OpenAI-compatible (OpenAI, Azure OpenAI, etc.)
• LM Studio

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Agentic configuration (example)

{
  "agentic": {
    "enabled": true,
    "promptProfile": "auto",
    "tools": {
      "execution": [
        { "type": "aca-session", "runtime": "shell", "poolEndpoint": "https://pool.eastus.dynamicsessions.io/..." },
        { "type": "aca-session", "runtime": "python", "poolEndpoint": "https://pool.eastus.dynamicsessions.io/..." },
        { "type": "aca-session", "runtime": "custom", "poolEndpoint": "https://pool.eastus.dynamicsessions.io/...", "containerImage": "myregistry.azurecr.io/agent-tools:1.0" }
      ],
      "integrations": [
        {
          "type": "mcp",
          "name": "zuora-mcp",
          "url": "https://internal/zuora-mcp",
          "authMode": "oauth-per-tenant",
          "allowEgress": true,
          "oauth": {
            "tokenUrl": "https://login.example.com/oauth/token",
            "clientId": "client-id",
            "clientSecret": "client-secret",
            "scope": "mcp.read"
          }
        }
      ]
    },
    "guardrails": {
      "maxIterations": 15,
      "loopTimeoutSeconds": 120,
      "validationMode": "hybrid",
      "requireConfirmationFor": ["delete", "deploy-prod"],
      "networkEgress": "restricted",
      "allowedEgressHosts": ["internal.example.com"],
      "requireZeroExitCode": true,
      "expectedAnswerPatterns": ["^## Summary"],
      "humanReviewOnMaxIterations": true
    }
  }
}

Configure via the Admin UI (/apps/{appId}/config on :5200) or PATCH /admin/apps/{appId}/config with the Master Key.

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Human-in-the-loop — how it works

1. The model proposes a tool that matches requireConfirmationFor (e.g. a command containing delete).
2. Execution stops; the API returns a confirmation prompt and header X-Context-Memory-Agentic-Awaiting-Confirmation.
3. The user replies with confirmation (e.g. confirm, approve, or [CONFIRM:abc123]).
4. The tool runs; the loop continues until a validated final answer.
5. If the iteration limit is reached, humanReviewOnMaxIterations requests approval of the partial answer.

Everything is recorded in the session log.md for audit.

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API — stable contract

The chat response is always the Ollama schema — message.content / done, never choices[] — with optional extensions under context_memory (see the self-host response above).

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Persistence

EF Core ships a single InitialCreate migration in ContextMemory.Infrastructure (current schema: 4 Postgres tables).

dotnet ef database update \
  --project src/ContextMemory.Infrastructure \
  --startup-project src/ContextMemory.Api

To add a new migration:

dotnet ef migrations add <MigrationName> \
  --project src/ContextMemory.Infrastructure \
  --startup-project src/ContextMemory.Api

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Language and localization

The seed app in appsettings.json uses en-US. Tenants can set DefaultLanguage to pt-PT (or any BCP-47 tag) and customize WikiSchema / personas for localized assistant behavior. Session wiki defaults are in SessionDefaults.cs; override per tenant via runtime config.

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Security and compliance

• Full tool isolation per tenant
• Restricted egress by default; explicit exceptions per tool/host
• Mandatory HITL for configurable destructive actions
• Append-only wiki log per session (agentic checkpoints)
• Rate limits with extra cost accounting for agentic loops
• Do not commit real credentials — appsettings.Development.json, .env, and data/ are gitignored; use User Secrets, environment variables, or Key Vault in production
• Rotate any credentials that were ever committed to version control

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Tests

dotnet test tests/ContextMemory.Api.Tests/ContextMemory.Api.Tests.csproj

Coverage includes: API contract, wiki, web search, agentic E2E (shell/MCP), HITL, streaming, guardrails, validation, prompt profiles.

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Repository structure

src/
  ContextMemory.Api/              # HTTP gateway, endpoints, middleware, hosting
  ContextMemory.Core/             # Domain, orchestration, contracts, session wiki logic
  ContextMemory.Infrastructure/   # Persistence, HttpClients, tool executors, telemetry
  ContextMemory.Adapters/         # Ollama, OpenAI, LM Studio, web search
  ContextMemory.Admin.UI/         # Blazor component library (Chat Lab / config editors)
  ContextMemory.Admin.Web/        # Runnable Admin console host (http://localhost:5200)
tests/
  ContextMemory.Api.Tests/        # Integration and E2E tests

Dependency graph: Api → Infrastructure → Core · Adapters → Core

Public contracts live in src/ContextMemory.Core/Contracts/ with XML documentation. Enable Swagger in Development at /swagger for the HTTP surface.

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Licensing

ContextMemory is released under the GNU Affero General Public License v3.0 (AGPL-3.0). See LICENSE for the full text.

In short: you are free to use, modify, and self-host this software, including commercially. If you run a modified version as a network service, the AGPL requires you to make your modified source available to that service's users under the same license.

Want to build a closed-source product on top, or avoid the AGPL's network-copyleft obligations entirely? Kortexio Cloud gives you the hosted gateway under commercial terms — no copyleft reach into your application code. For a self-hosted commercial license or enterprise deployment (ACA pools, internal MCP, admin SSO), contact the commercial team via kortexio.io.

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Support and contribution

Contributions are welcome. See CONTRIBUTING.md for the language policy, local setup, and PR guidelines. Open a GitHub issue to report a bug or propose an improvement.

For enterprise integration (ACA pools, internal MCP, admin SSO), reach the commercial team via kortexio.io.

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ContextMemory — one URL for memory and action. The open-source core of Kortexio.