Atlas / MCP servers / aywengo / Kafka Schema Registry

Kafka Schema RegistryBLOCK

mcp/aywengo/kafka-schema-registry

A comprehensive Message Control Protocol (MCP) server for Kafka Schema Registry.

Verdict
BLOCK
Grade
D
Trust score
69 /100
Exposed tools
9 5r · 4w · 0d
Transport
streamable-http
License
MIT
Stars
32
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

[](https://mseep.ai/app/aywengo-kafka-schema-reg-mcp) [](https://opensource.org/licenses/MIT) [](https://www.python.org/downloads/) [](https://hub.docker.com/r/aywengo/kafka-schema-reg-mcp) [](https://github.com/aywengo/kafka-schema-reg-mcp/releases) [](https://github.com/aywengo/kafka-schema-reg-mcp/issues) [](https://hub.docker.com/r/aywengo/kafka-schema-reg-mcp) [](https://github.com/aywengo/kafka-schema-reg-mcp/graphs/commit-activity) [](https://modelcontextprotocol.io) [](https://archestra.ai/mcp-catalog/aywengo__kafka-schema-reg-mcp)

A comprehensive Model Context Protocol (MCP) server that provides Claude Desktop and other MCP clients with tools for Kafka Schema Registry operations. Features advanced schema context support, multi-registry management, and comprehensive schema export capabilities.

**🎯 True MC
Read from source at commit 43d99e4a52d3OBSERVED · 2026-10-08
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code
claude mcp add kafka-schema-reg-mcp-inspector-tests --env ALLOW_DEV_TOKENS=${ALLOW_DEV_TOKENS} --env AUTH_AUDIENCE=${AUTH_AUDIENCE} --env AUTH_CLIENT_REG_ENABLED=${AUTH_CLIENT_REG_ENABLED} --env AUTH_DEFAULT_SCOPES=${AUTH_DEFAULT_SCOPES} -- npx -y [email protected]
claude-desktop
{
  "mcpServers": {
    "kafka-schema-reg-mcp-inspector-tests": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "ALLOW_DEV_TOKENS": "${ALLOW_DEV_TOKENS}",
        "AUTH_AUDIENCE": "${AUTH_AUDIENCE}",
        "AUTH_CLIENT_REG_ENABLED": "${AUTH_CLIENT_REG_ENABLED}",
        "AUTH_DEFAULT_SCOPES": "${AUTH_DEFAULT_SCOPES}"
      }
    }
  }
}
03

Exposed tools (9)

5 read · 4 write · 0 destructive.

ToolRiskDescription
abort_workflowreadAbort an active workflow.
describe_workflowreadGet detailed workflow information.
guided_context_reorganizationwriteConvenience method to start Context Reorganization workflow.
guided_disaster_recoverywriteConvenience method to start Disaster Recovery workflow.
guided_schema_migrationwriteConvenience method to start Schema Migration workflow.
list_workflowsreadList all available workflows.
pingread
start_workflowwriteStart a multi-step workflow.
workflow_statusreadGet workflow status.
04

Trust audit

BLOCKgrade D · trust 69/100 Do not install this without reading the findings. The audit found something that could harm you or your machine.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codeFAIL
L2Instruction surface (what it tells the agent)WARN
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
declared (3 observation(s))
Network
declared (11 observation(s))
Shell
none-observed
Dependencies
not all pinned
Secrets in source
found

Findings (25)

HIGHNetwork egress · net.tls_off · CWE-200, CWE-319
schema_registry_common.py:300
session.verify = False
Why it matters. certificate verification is disabled
Fix. leave verification on
MEDIUMNetwork egress · net.raw_ip · CWE-200, CWE-319
config-examples/docker-compose.mcp.yml:63
SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081
MEDIUMNetwork egress · net.raw_ip · CWE-200, CWE-319
config-examples/docker-compose.mcp.yml:80
SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081
MEDIUMNetwork egress · net.raw_ip · CWE-200, CWE-319
config-examples/docker-compose.mcp.yml:97
SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081
MEDIUMNetwork egress · net.raw_ip · CWE-200, CWE-319
demo/docker-compose-llama.yml:126
SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081
MEDIUMNetwork egress · net.raw_ip · CWE-200, CWE-319
docker-compose.yml:50
SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081
MEDIUMHard-coded secrets · secret.generic · CWE-798, CWE-321
helm/README.md:90
--from-literal=client-secret="your-google-client-secret" \
MEDIUMPrompt injection · prompt.hidden_style · CWE-94, CWE-1427
README.md:19
<div style="background-color: white; padding: 20px; border-radius: 10px;">
LOWInventory / provenance · inv.hidden_file · CWE-1104
.trivyignore
.trivyignore
Why it matters. hidden member outside the usual dotfiles
Fix. review its purpose
LOWInventory / provenance · inv.hidden_file · CWE-1104
demo/.env.template
.env.template
Why it matters. hidden member outside the usual dotfiles
Fix. review its purpose
LOWInventory / provenance · inv.hidden_file · CWE-1104
helm/.helmignore
.helmignore
Why it matters. hidden member outside the usual dotfiles
Fix. review its purpose
LOWInventory / provenance · inv.hidden_file · CWE-1104
inspector-tests/config/.temp.inspector-config.json
.temp.inspector-config.json
Why it matters. hidden member outside the usual dotfiles
Fix. review its purpose
LOWCode injection · code.dynamic_import · CWE-78, CWE-94, CWE-95
tests/test_simple_python.py:31
__import__(dep)
LOWInformation disclosure · disclose.log_secret · CWE-209, CWE-532
examples/test-jwt-validation.py:64
print(f"📝 Token (first 50 chars): {token[:50]}...")
LOWInformation disclosure · disclose.log_secret · CWE-209, CWE-532
tests/test_oauth.py:236
print(f"   ✅ {token_type}: {token[:20]}...")
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
tests/test_ssrf_vulnerability.py:95
("../../../etc/passwd", "..%2F..%2F..%2Fetc%2Fpasswd"),
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
tests/test_ssrf_vulnerability.py:178
"../../../etc/passwd",
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
tests/test_ssrf_vulnerability.py:213
"../../../admin",  # Path traversal
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
inspector-tests/package.json
@mcpjam/inspector
Why it matters. 1 dependency range(s) float
Fix. pin exact versions or ship a lockfile
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
requirements.txt
fastmcp, pydocket, jaraco-context, msgpack, mcp, fastapi, requests, python-dotenv
Why it matters. 19 requirement(s) not pinned with ==
Fix. pin exact versions
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
docs/user-role-assignment-guide.md:306
curl -X POST https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token \
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
docs/user-role-assignment-guide.md:316
curl -X POST https://keycloak.company.com/realms/production/protocol/openid-connect/token \
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
docs/user-role-assignment-guide.md:323
curl -X POST https://your-domain.okta.com/oauth2/default/v1/token \
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
INFOInventory / provenance · inv.oversize · CWE-1104
docs/logo_400_mcp_kafka_schema_reg.png
docs/logo_400_mcp_kafka_schema_reg.png
Why it matters. 1392537 bytes not read
INFOPrompt injection · prompt.authority_framing · CWE-94, CWE-1427
config-examples/mcp-ide-integration.md:343
Your IDE now has full access to Kafka Schema Registry operations through the MCP protocol! 🚀

Gates applied: no_behavioural_pass.

Audited 2026-10-08 · audit v0.4.1 · source sha 43d99e4a52d3full audit observations/trust-audit/mcp-server/aywengo__kafka-schema-registry.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-0843d99e4a52d3BLOCKD69first audit
06

Questions

What is the Kafka Schema Registry MCP server?

A comprehensive Message Control Protocol (MCP) server for Kafka Schema Registry.

What tools does Kafka Schema Registry expose?

9 in total: 5 read-only, 4 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Kafka Schema Registry safe to connect to an agent?

No — not without reading the findings first. The audit graded it D (69/100) and found 1 critical or high issue in the source. Each one is listed on this page with the file and line it is on.

What credentials does Kafka Schema Registry need?

It reads ALLOW_DEV_TOKENS, AUTH_AUDIENCE, AUTH_CLIENT_REG_ENABLED, AUTH_DEFAULT_SCOPES, AUTH_GITHUB_CLIENT_ID, AUTH_GITHUB_ORG, AUTH_ISSUER_URL, AUTH_PROVIDER, AUTH_REQUIRED_SCOPES, AUTH_REVOCATION_ENABLED, AUTH_VALID_SCOPES and ENABLE_AUTH from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.

How does Kafka Schema Registry run?

It speaks streamable-http, so it runs as a service you connect to over the network. It is published on npm as kafka-schema-reg-mcp-inspector-tests at 1.0.0.

How current is this page?

The grade is for one exact copy of the source (43d99e4a52d3), read on 2026-10-08. The repository is watched and re-audited when it changes.

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