streamnative-mcp-server

StreamNative MCP server that implements an MCP server interface for AI agents to manage and use StreamNative Cloud resources plus Apache Kafka and Apache Pulsar (admin and client operations). It supports both stdio and SSE transport modes and can connect to StreamNative Cloud using service-account authentication or to external Kafka/Pulsar clusters directly.

Evaluated Mar 30, 2026 (22d ago)

Repo ↗ DevTools mcp model-context-protocol kafka pulsar streaming agent-integration go sse stdio

⚙ Agent Friendliness

/ 100

Can an agent use this?

🔒 Security

/ 100

Is it safe for agents?

⚡ Reliability

/ 100

Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality

Documentation

Error Messages

Auth Simplicity

Rate Limits

🔒 Security

TLS Enforcement

Auth Strength

Scope Granularity

Dep. Hygiene

Secret Handling

The README describes multiple authentication modes (service account key file for StreamNative Cloud; tokens for Pulsar; SASL/TLS options for Kafka). It also documents a strict 401 behavior for missing/invalid Bearer tokens in SSE multi-session Pulsar mode. However, supplied content does not specify fine-grained scopes, authorization boundaries per tool, secret handling/logging guarantees, or detailed security/error-code behavior.

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

You want an MCP-compatible bridge for agentic operations across Kafka/Pulsar (and optionally StreamNative Cloud) with a single standardized tool interface.

Avoid When

You need a fully specified public REST/OpenAPI developer API surface (this is primarily an MCP server, stdio/SSE runtime).

Use Cases

• Letting LLM agents perform Kafka admin tasks (topics, partitions, consumer groups) and client tasks (produce/consume)
• Letting LLM agents perform Pulsar admin tasks (tenants/namespaces/topics/schemas) and client tasks (produce/consume)
• Managing messaging/connectivity resources from an agent via a standardized MCP interface
• Running multi-session per-user Pulsar sessions over SSE using Bearer tokens

Not For

• Use as a general-purpose database/API when you only need HTTP REST/SDK integrations
• Environments where you cannot securely provide long-lived service account keys or tokens to the server process
• Production deployments without validating the underlying authz boundaries for each messaging operation

Interface

REST API

GraphQL

gRPC

MCP Server

Yes ↗

SDK

Webhooks

Authentication

Methods: StreamNative Cloud service account key file (admin role mentioned) Pulsar Bearer token for external Pulsar (via --pulsar-token or SSE Authorization: Bearer) Kafka authentication (flags for SASL_SSL/PLAIN plus optional TLS CA/certs/keys; schema registry auth options)

OAuth: No Scopes: No

Auth model is driven by transport/runtime flags: StreamNative Cloud uses a service account key file; external Pulsar via token; external Kafka via SASL/TLS flags. SSE multi-session mode requires Authorization: Bearer <token> per request.

Pricing

Free tier: No

Requires CC: No

No pricing information provided in the supplied content; Open-source project likely, but StreamNative Cloud/Kafka/Pulsar usage costs depend on your infrastructure.

Agent Metadata

Pagination

none

Idempotent

False

Retry Guidance

Not documented

Known Gotchas

⚠ MCP tool availability can change significantly based on the --features flag; agents may fail if required tools are disabled
⚠ For SSE multi-session Pulsar mode, requests require Authorization: Bearer <token>; missing/invalid tokens yield HTTP 401
⚠ In stdio mode there is no mention of per-user session separation; multi-session mode is SSE-only for external Pulsar

Alternatives

Use Kafka/Pulsar native SDKs/tools directly from your agent (no MCP layer) Build a custom MCP server that wraps Kafka/Pulsar SDKs with your own authz and error handling Use other MCP servers/integration layers for messaging systems (if available in your ecosystem)

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API endpoint ↗ Agent guide ↗ Report inaccuracy

Scores are editorial opinions as of 2026-03-30.