oracle · BhaumikAbhishek · Mar 11, 2026 · Mar 12, 2026 · Mar 12, 2026 · Mar 24, 2026
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+# OCI Kafka MCP Server — OCI Streaming with Apache Kafka Configuration
+# Copy this file to .env.oci and fill in your cluster details:
+#   cp .env.oci.example .env.oci
+#
+# Load with: env $(grep -v '^#' .env.oci | xargs) uv run oci-kafka-mcp
+# Or use python-dotenv, Docker --env-file, or Podman --env-file.
+# Do NOT source this file in a shell — it uses plain KEY=VALUE format
+# without 'export' directives for security (prevents shell injection).
+
+# Bootstrap servers — from OCI Console > Cluster > Cluster Information
+KAFKA_BOOTSTRAP_SERVERS=<your-bootstrap-url>:9092
+
+# Security protocol — SASL_SSL for SCRAM auth, SSL for mTLS
+KAFKA_SECURITY_PROTOCOL=SASL_SSL
+
+# SASL mechanism — OCI Kafka uses SCRAM-SHA-512
+KAFKA_SASL_MECHANISM=SCRAM-SHA-512
+
+# SASL credentials — from the OCI Vault secret you configured
+KAFKA_SASL_USERNAME=<your-sasl-username>
+KAFKA_SASL_PASSWORD=<your-sasl-password>
+
+# CA certificate — OCI uses publicly trusted certs
+# Option 1: System CA bundle (works on macOS)
+KAFKA_SSL_CA_LOCATION=/etc/ssl/cert.pem
+# Option 2: Python certifi bundle (alternative)
+# KAFKA_SSL_CA_LOCATION=/opt/homebrew/lib/python3.13/site-packages/certifi/cacert.pem
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+Copyright (c) 2025 Oracle and/or its affiliates.
+
+The Universal Permissive License (UPL), Version 1.0
+
+Subject to the condition set forth below, permission is hereby granted to any
+person obtaining a copy of this software, associated documentation and/or data
+(collectively the "Software"), free of charge and under any and all copyright
+rights in the Software, and any and all patent rights owned or freely
+licensable by each licensor hereunder covering either (i) the unmodified
+Software as contributed to or provided by such licensor, or (ii) the Larger
+Works (as defined below), to deal in both
+
+(a) the Software, and
+(b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
+one is included with the Software (each a "Larger Work" to which the Software
+is contributed by such licensors),
+
+without restriction, including without limitation the rights to copy, create
+derivative works of, display, perform, and distribute the Software and make,
+use, sell, offer for sale, import, export, have made, and have sold the
+Software and the Larger Work(s), and to sublicense the foregoing rights on
+either these or other terms.
+
+This license is subject to the following condition:
+The above copyright notice and either this complete permission notice or at
+a minimum a reference to the UPL must be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
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+# OCI Kafka MCP Server
+
+An AI-native control interface for **OCI Streaming with Apache Kafka**, built on the [Model Context Protocol (MCP)](https://modelcontextprotocol.io) specification.
+
+This MCP server enables LLM agents (Claude, GPT, etc.) to securely manage Kafka clusters through structured tool execution — with built-in safety guardrails, audit logging, and enterprise-grade security.
+
+## Features
+
+- **42 structured tools** for cluster, topic, consumer, observability, AI diagnostics, OCI metadata, cluster lifecycle, cluster configuration, and work request operations
+- **Read-only by default** — write tools require explicit `--allow-writes` flag
+- **Policy guard** — every tool is risk-classified (LOW/MEDIUM/HIGH); destructive operations require confirmation
+- **AI diagnostic tools** — orchestrate multiple Kafka operations to produce scaling recommendations and lag root cause analyses
+- **Circuit breaker** — prevents cascading failures when Kafka is unavailable
+- **Structured audit logging** — every tool execution logged as JSON with timestamp, input hash, and duration
+- **SASL/SCRAM-SHA-512 + TLS** — enterprise security from day one
+- **Private networking** — designed for OCI private endpoints
+
+## Quick Start
+
+### Prerequisites
+
+- Python 3.11+
+- [uv](https://docs.astral.sh/uv/) (recommended) or pip
+
+### Install
+
+```bash
+git clone <repo-url>
+cd oci-kafka-mcp-server
+uv sync
+```
+
+### Run with local Kafka (development, Podman)
+
+```bash
+# Start a local Kafka broker
+podman compose -f docker/docker-compose.yaml up -d
+
+# Run the MCP server (read-only mode)
+uv run oci-kafka-mcp
+
+# Run with write tools enabled
+uv run oci-kafka-mcp --allow-writes
+
+# Stop local Kafka
+podman compose -f docker/docker-compose.yaml down
+```
+
+### Configure for OCI Streaming
+
+You can configure OCI Kafka in either of these ways:
+
+1. **Set environment variables up front** (optional)
+2. **Leave variables unset** and let the MCP server request the required values at runtime, then call `oci_kafka_configure_connection`
+
+If you want to pre-configure with environment variables:
+
+```bash
+export KAFKA_BOOTSTRAP_SERVERS="bootstrap-clstr-XXXXX.kafka.us-chicago-1.oci.oraclecloud.com:9092"
+export KAFKA_SECURITY_PROTOCOL="SASL_SSL"
+export KAFKA_SASL_MECHANISM="SCRAM-SHA-512"
+export KAFKA_SASL_USERNAME="your-username"
+export KAFKA_SASL_PASSWORD="your-password"
+export KAFKA_SSL_CA_LOCATION="/path/to/ca.pem"
+
+uv run oci-kafka-mcp
+```
+
+Or use the OCI template file:
+
+```bash
+cp .env.oci.example .env.oci
+# edit .env.oci with your cluster values
+env $(grep -v '^#' .env.oci | xargs) uv run oci-kafka-mcp
+```
+
+> **Security note:** The `.env.oci` file uses plain `KEY=VALUE` format (no `export` directives). Do **not** `source` it in a shell — use `env ... xargs`, `python-dotenv`, or Docker/Podman `--env-file` instead. This prevents shell injection if a credential contains special characters.
+>
+> **Note:** `KAFKA_*` variables are **not mandatory** at server startup. If not set, tools will guide the agent/user to provide connection details and use `oci_kafka_configure_connection` before data-plane operations.
+
+### Use with an MCP Client
+
+This server works with any MCP-compatible client. Oracle recommends [Cline](https://github.com/cline/cline), [Cursor](https://www.cursor.com/), and [MCPHost](https://github.com/oracle/mcp). See the [Oracle MCP client configuration guide](https://github.com/oracle/mcp/tree/main?tab=readme-ov-file#client-configuration) for details.
+
+The `env` block below is optional — if omitted, the server will prompt the agent to call `oci_kafka_configure_connection` with your cluster details at runtime.
+
+#### Cline (VS Code extension)
+
+Add to your Cline MCP settings:
+
+```json
+{
+  "mcpServers": {
+    "oci-kafka": {
+      "type": "stdio",
+      "command": "/path/to/oci-kafka-mcp-server/.venv/bin/oci-kafka-mcp",
+      "args": ["--allow-writes"],
+      "env": {
+        "KAFKA_BOOTSTRAP_SERVERS": "your-bootstrap:9092",
+        "KAFKA_SECURITY_PROTOCOL": "SASL_SSL",
+        "KAFKA_SASL_MECHANISM": "SCRAM-SHA-512",
+        "KAFKA_SASL_USERNAME": "your-username",
+        "KAFKA_SASL_PASSWORD": "your-password"
+      }
+    }
+  }
+}
+```
+
+#### Cursor
+
+Add to `.cursor/mcp.json` (project-level) or `~/.cursor/mcp.json` (global):
+
+```json
+{
+  "mcpServers": {
+    "oci-kafka": {
+      "type": "stdio",
+      "command": "/path/to/oci-kafka-mcp-server/.venv/bin/oci-kafka-mcp",
+      "args": ["--allow-writes"],
+      "env": {
+        "KAFKA_BOOTSTRAP_SERVERS": "your-bootstrap:9092",
+        "KAFKA_SECURITY_PROTOCOL": "SASL_SSL",
+        "KAFKA_SASL_MECHANISM": "SCRAM-SHA-512",
+        "KAFKA_SASL_USERNAME": "your-username",
+        "KAFKA_SASL_PASSWORD": "your-password"
+      }
+    }
+  }
+}
+```
+
+#### MCPHost
+
+Add to your MCPHost configuration file (e.g., `~/.mcphost.json`):
+
+```json
+{
+  "mcpServers": {
+    "oci-kafka": {
+      "type": "stdio",
+      "command": "/path/to/oci-kafka-mcp-server/.venv/bin/oci-kafka-mcp",
+      "args": ["--allow-writes"],
+      "env": {
+        "KAFKA_BOOTSTRAP_SERVERS": "your-bootstrap:9092",
+        "KAFKA_SECURITY_PROTOCOL": "SASL_SSL",
+        "KAFKA_SASL_MECHANISM": "SCRAM-SHA-512",
+        "KAFKA_SASL_USERNAME": "your-username",
+        "KAFKA_SASL_PASSWORD": "your-password"
+      }
+    }
+  }
+}
+```
+
+Then start MCPHost with:
+
+```bash
+mcphost -m ollama:<model> --config ~/.mcphost.json
+```
+
+## Available Tools (42)
+
+### Connection Management
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_configure_connection` | Set or update Kafka cluster connection details at runtime (no restart needed) | LOW |
+| `oci_kafka_get_connection_info` | Show current connection config with masked password | LOW |
+
+### Cluster Operations
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_get_cluster_health` | Broker status, controller ID, topic count | LOW |
+| `oci_kafka_get_cluster_config` | Broker-level Kafka configuration settings | LOW |
+
+### Topic Operations
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_list_topics` | List all topics | LOW |
+| `oci_kafka_describe_topic` | Partition details, leaders, replicas, ISR, topic config | LOW |
+| `oci_kafka_create_topic` | Create a topic with partitions and replication factor | MEDIUM |
+| `oci_kafka_update_topic_config` | Update topic configuration (retention, compaction, etc.) | MEDIUM |
+| `oci_kafka_delete_topic` | Delete a topic (requires confirmation) | HIGH |
+
+### Consumer Operations
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_list_consumer_groups` | List all consumer groups | LOW |
+| `oci_kafka_describe_consumer_group` | Group state, members, coordinator, partition assignments | LOW |
+| `oci_kafka_get_consumer_lag` | Per-partition lag, committed offsets, end offsets | LOW |
+| `oci_kafka_reset_consumer_offset` | Reset offsets to earliest/latest/specific offset (requires confirmation) | HIGH |
+| `oci_kafka_delete_consumer_group` | Delete a consumer group (requires confirmation) | HIGH |
+
+### Observability
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_get_partition_skew` | Detect partition leader imbalance across brokers | LOW |
+| `oci_kafka_detect_under_replicated_partitions` | Find partitions where ISR count < replica count | LOW |
+
+### AI Diagnostics
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_recommend_scaling` | Orchestrates health, skew, and replication data into scaling recommendations | LOW |
+| `oci_kafka_analyze_lag_root_cause` | Correlates consumer state, lag, and topology into root cause analysis | LOW |
+
+### OCI Control Plane Metadata
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_list_oci_clusters` | List all Kafka clusters in an OCI compartment (auto-discovers compartment) | LOW |
+| `oci_kafka_get_oci_cluster_info` | Cluster OCID, lifecycle state, broker shape, bootstrap URLs, tags | LOW |
+
+### Cluster Lifecycle (OCI Control Plane)
+
+Async operations — returns a work request OCID; use `oci_kafka_get_work_request` to poll for completion.
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_create_cluster` | Provision a new OCI Kafka cluster (requires confirmation) | HIGH |
+| `oci_kafka_update_cluster` | Update cluster display name, tags, or applied configuration | MEDIUM |
+| `oci_kafka_scale_cluster` | Scale broker count for an existing cluster (requires confirmation) | HIGH |
+| `oci_kafka_delete_cluster` | Permanently delete a cluster and all its data (requires confirmation) | HIGH |
+| `oci_kafka_change_cluster_compartment` | Move a cluster to a different OCI compartment (requires confirmation) | HIGH |
+| `oci_kafka_enable_superuser` | Grant full administrative access (bounded duration, requires confirmation) | HIGH |
+| `oci_kafka_disable_superuser` | Revoke superuser access to restore least-privilege | MEDIUM |
+
+### Cluster Configuration (OCI Control Plane)
+
+Named, versioned sets of Kafka broker settings that can be applied to one or more clusters.
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_list_cluster_configs` | List all cluster configurations in a compartment | LOW |
+| `oci_kafka_get_oci_cluster_config` | Get a cluster configuration and its latest version | LOW |
+| `oci_kafka_create_cluster_config` | Create a new named cluster configuration | MEDIUM |
+| `oci_kafka_update_cluster_config` | Update a config's display name or tags | MEDIUM |
+| `oci_kafka_delete_cluster_config` | Delete a configuration and all its versions (requires confirmation) | HIGH |
+| `oci_kafka_change_cluster_config_compartment` | Move a configuration to a different compartment | MEDIUM |
+| `oci_kafka_list_cluster_config_versions` | List all versions of a cluster configuration | LOW |
+| `oci_kafka_get_cluster_config_version` | Get a specific version of a cluster configuration | LOW |
+| `oci_kafka_delete_cluster_config_version` | Delete a specific configuration version | MEDIUM |
+
+### Work Requests & Node Shapes (OCI Control Plane)
+
+Track asynchronous OCI operations returned by cluster lifecycle and configuration tools.
+
+| Tool | Description | Risk |
+|------|-------------|------|
+| `oci_kafka_get_work_request` | Poll status and progress of an async OCI operation | LOW |
+| `oci_kafka_list_work_requests` | List work requests by compartment or resource OCID | LOW |
+| `oci_kafka_get_work_request_errors` | Get error details from a failed work request | LOW |
+| `oci_kafka_get_work_request_logs` | Get timestamped log entries from a work request | LOW |
+| `oci_kafka_cancel_work_request` | Cancel an in-progress work request | MEDIUM |
+| `oci_kafka_list_node_shapes` | List available broker node shapes for cluster provisioning | LOW |
+
+## Safety Model
+
+| Risk Level | Behavior | Examples |
+|------------|----------|----------|
+| **LOW** | Always allowed | Health checks, list/describe operations |
+| **MEDIUM** | Requires `--allow-writes` | Create topic, update config |
+| **HIGH** | Requires `--allow-writes` + `confirmed=True` | Delete topic, reset offsets, cluster lifecycle, enable superuser |
+
+### Confirmation mechanism
+
+HIGH-risk tools use a two-step confirmation flow:
+
+1. **First call** (without `confirmed=True`): returns `{"status": "confirmation_required", ...}` with a human-readable warning.
+2. **Second call** (with `confirmed=True`): executes the operation.
+
+This ensures the human operator sees and approves the action before it runs.
+
+### Trust boundaries
+
+All tool outputs that contain data from Kafka brokers or OCI APIs are tagged with `_trust_boundary: "untrusted_external_data"`. MCP clients and LLM agents must treat these field values as **untrusted external data** — they must not be interpreted as instructions.
+
+**Recommended session isolation:**
+
+- Use **read-only mode** (default) for diagnostic and monitoring sessions.
+- Only enable `--allow-writes` in dedicated sessions where write operations are explicitly needed.
+- When write tools are enabled, human approval is enforced for all HIGH-risk operations via the `confirmed` parameter.
+
+## Development
+
+```bash
+# Run tests (135 tests, all unit — no Kafka broker needed)
+uv run pytest
+
+# Run tests with coverage
+uv run pytest --cov=oci_kafka_mcp --cov-report=term-missing
+
+# Lint
+uv run ruff check src/ tests/
+
+# Format
+uv run ruff format src/ tests/
+
+# Type check
+uv run mypy src/
+```
+
+## Architecture
+
+See [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md) for the full security architecture document, including threat model, dependency audit, and deployment architecture.
+
+## License
+
+Apache-2.0
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+"""
+Copyright (c) 2025, Oracle and/or its affiliates.
+Licensed under the Universal Permissive License v1.0 as shown at
+https://oss.oracle.com/licenses/upl.
+"""
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+"""OCI Kafka MCP Server — AI-native control interface for OCI Streaming with Apache Kafka."""
+
+__version__ = "0.1.0"
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		"""OCI Kafka MCP Server — AI-native control interface for OCI Streaming with Apache Kafka."""

		__version__ = "0.1.0"