# mcp-trino by tuannvm MCP Server

MCP server for Trino distributed SQL query engine access

**Publisher claimed.** No tool list reported, and Pod has not connected to this server.

## Status

Pod has not dialled mcp-trino by tuannvm yet, so everything on this page is what its publisher reported rather than what we observed. Registries describe servers; they do not connect to them. Until a check runs, treat the tool list below as a claim.

## Connect

Published as `https://github.com/tuannvm/mcp-trino/releases/download/v2.2.1/mcp-trino_2.2.1_darwin_arm64.tar.gz` on mcpb. Runs locally.

## Reviewed GitHub reports

**27 GitHub reports passed Pod's relevance review.** This can include external user reports, maintainer-confirmed bugs, and concrete feature gaps. It is evidence to inspect, not a count of distinct defects. Showing 12.

### Most discussed

### Enhancement Request: Support Trino OAuth2 Authentication

Our Trino instance uses OAuth2 authentication by setting the `externalAuthentication` JDBC property to `true`.

Are there plans for the MCP to support this type of authentication?

Thank you

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/52) · 2025-06-11 · open · external user · 9 comments

### SSL Verify

is it possible to skip TLS verify for internal dev and testing? 
What would be the env variable to use for this?

setting `TRINO_SSL_INSECURE=true` does not work and the cert is still verified (
Eg:- I get hostname verification errors

```
docker run -i --rm -p 8080:8080 -e -e TRINO_SSL_INSECURE=true -e MCP_TRANSPORT=http -e TRINO_ALLOW_WRITE_QUERIES=false -e TRINO_HOST=mytrinoserver -e TRINO_PORT=443 -e TRINO_USER=user -e TRINO_PASSWORD=password -e TRINO_SCHEME=https ghcr.io/tuannvm/mcp-trino:l

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/88) · 2025-08-25 · open · external user · 6 comments

### Token validation failed

I can connect to mcp server, but token verification failed.

OAuth: Validating token for tool list_catalogs: hJYK6wSu5afG9JMBjK0QOHddo+q69rnzYF9OGR7EDQM=
2025/09/05 10:56:56 OAuth: Token validation failed for tool list_catalogs: failed to parse and validate token: token is malformed: token contains an invalid number of segment

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/91) · 2025-09-05 · closed · external user · 2 comments

### Go Security Issue

Run go install golang.org/x/vuln/cmd/govulncheck@latest
go: downloading golang.org/x/vuln v1.1.4
go: downloading golang.org/x/telemetry v0.0.0-20240522233618-39ace7a40ae7
go: downloading golang.org/x/sync v0.10.0
go: downloading golang.org/x/mod v0.22.0
go: downloading golang.org/x/tools v0.29.0
=== Symbol Results ===

Vulnerability #1: GO-2025-3849
    Incorrect results returned from Rows.Scan in database/sql
  More info: https://pkg.go.dev/vuln/GO-2025-3849
  Standard library
    Found in: dat

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/76) · 2025-08-11 · closed · 2 comments

### OAuth doesn't work with Claude Code

I tried both Google OAuth and HMAC OAuth. The configurations work in Cursor, but not in Claude Code.

Working Cursor config:

```
{
  "mcpServers": {
    "mcp-trino-https": {
      "url": "https://remote-server.example.com:9096/sse",
      "headers": {
        "Authorization": "Bearer <hmac-key-here>"
      }
    }
  }
}
```

To note: Not using in localhost mode, the MCP Go Server sits on another publically accessible machine

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/75) · 2025-08-07 · closed · external user · 2 comments

### Most recent

### OAuth scopes not configurable → `scopes_supported` omitted → Google (and strict IdPs) reject authorization with "Missing required parameter: scope"

## Summary

When OAuth is enabled with an IdP that **requires a `scope` parameter** on the authorization request (e.g. Google), the interactive OAuth flow fails: mcp-trino never advertises `scopes_supported` in its RFC 9728 protected-resource metadata and provides no way to configure OAuth scopes. MCP clients (e.g. Claude Desktop/Code) derive the scopes to request from that metadata — with it absent they send **no `scope`**, and Google rejects the request:

```
Error 400: invalid_request — "Miss

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/217) · 2026-07-21 · open · external user · 0 comments

### feat: support configurable OIDC scopes via OIDC_SCOPES env var

## Problem

When using `OAUTH_MODE=proxy` with providers like Okta or Azure AD that require `offline_access` to issue refresh tokens, there is no way to configure which OIDC scopes mcp-trino requests. The scopes are hardcoded inside `oauth-mcp-proxy`, so users cannot add the scopes their IdP needs.

This blocks refresh-token-based flows in proxy mode — the access token expires and the client must re-authenticate from scratch.

## Proposed Solution

Introduce an `OIDC_SCOPES` environment variable

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/209) · 2026-06-05 · open · external user · 0 comments

### Private security disclosure route?

Hi, I have a security report for this project and did not find an enabled GitHub private vulnerability reporting route or SECURITY.md contact.

Could a maintainer enable GitHub private vulnerability reporting or share the preferred private disclosure channel? I can provide the full technical details there.

Thanks.

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/205) · 2026-05-20 · open · external user · 0 comments

### feat: audit logging with OAuth user identity

## Context

MCP Trino with OAuth enabled knows WHO is running each query (email, groups, roles from JWT). Currently this identity is used only for impersonation — it should also be logged for audit purposes.

## Desired behavior

Every query execution logs:
- User email/subject from JWT
- Groups from JWT
- Query text (truncated to 200 chars)
- Timestamp
- Duration
- Row count
- Success/failure

Log format: structured JSON via slog (already used throughout codebase).

Example:
```json
{"level":"I

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/201) · 2026-05-07 · closed · external user · 0 comments

### feat: group-based catalog allowlist

## Context

With Keycloak groups mapped to JWT `groups` claim, MCP Trino can restrict which Trino catalogs each group can access.

## Current behavior

All authenticated users see all catalogs (`No Trino allowlists configured, all catalogs, schemas, and tables are accessible`).

## Desired behavior

Configure catalog access per group via environment variable or config:

```
TRINO_GROUP_CATALOG_MAP=data-analysts:lake_curated,lake_landing;finance:finance_prd,finance_sbx;data-engineers:*;engineerin

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/200) · 2026-05-07 · closed · external user · 0 comments

### feat: role-based write query enforcement via JWT claims

## Context

MCP Trino has `TRINO_ALLOW_WRITE_QUERIES` as a global toggle. With Keycloak OAuth now active (`lastro-internal` realm), we can enforce write access per-user based on JWT role claims.

## Current behavior

- `TRINO_ALLOW_WRITE_QUERIES=false` → blocks ALL write queries for ALL users
- `TRINO_ALLOW_WRITE_QUERIES=true` → allows ALL write queries for ALL users

## Desired behavior

- Users with `mcp-readonly` role (default) → read-only queries only
- Users with `mcp-admin` role → write qu

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/199) · 2026-05-07 · closed · external user · 0 comments

### MCP in Claude desktop failing with failed to verify signature: failed to verify id token signature

HI 

I have beed to trying to add this trino mcp in claude desktop with oauth flow using azure as provider. 

I have set below env variables in my deployment

```
apiVersion: apps/v1
kind: Deployment
metadata:
  name: trino-mcp
  namespace: etl
spec:
  replicas: 1
  selector:
    matchLabels:
      app: trino-mcp
  template:
    metadata:
      labels:
        app: trino-mcp
    spec:
      containers:
        - name: trino-mcp
          image: ghcr.io/tuannvm/mcp-trino:latest
          ports:
 

[Read the thread](https://github.com/tuannvm/mcp-trino/issues/191) · 2026-04-22 · open · external user · 0 comments

[See all 22 reports Pod holds for mcp-trino by tuannvm](/mcp/mcp-trino-by-tuannvm/issues) — of 27 qualified upstream.

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