Grades are a hygiene check, not a security guarantee.

MCP, MCP server

authserver

One Go binary.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit d33d32e80e05, unchanged since the check below.

NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV OBFUSCATION_FILE_CAP_REACHED

Why this grade

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    api/public/oauth/dpop.go, line 25 // could write a row per request with `curl -X POST /oauth/token -d grant_type=x`,

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    examples/_shared/native-as.sh, line 19 # Required env (read from caller's .env before invocation):

  • OBFUSCATION_FILE_CAP_REACHED Note

    The 400 file cap was reached before every file was read.

    examples/go/01-mcp-server-basic/go.mod, line 1 module github.com/authplane-examples/go-mcp-01

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Pass

    No shell or command execution found, and no extra permission was declared.

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    api/public/oauth/dpop.go, line 25

    // could write a row per request with `curl -X POST /oauth/token -d grant_type=x`,

    demo/mcp-demo-server-start.sh, line 97

    if curl -sf -o /dev/null -H "${AUTH_HEADER}" "${ADMIN_URL}/admin/stats"; then

    demo/mcp-demo-server-start.sh, line 135

    RESOURCE_HTTP=$(curl -s -o /tmp/authserver-demo.resource.json -w "%{http_code}" \

    Show more

    demo/mcp-demo-server-start.sh, line 159

    GCAL_HTTP=$(curl -s -o /tmp/authserver-demo.gcal-resource.json -w "%{http_code}" \

    demo/mcp-demo-server-start.sh, line 191

    FRONTING_HTTP=$(curl -s -o /tmp/authserver-demo.fronting.json -w "%{http_code}" \

    demo/mcp-demo-server-start.sh, line 211

    CLIENT_RESP=$(curl -s \

    demo/mcp-demo-server-start.sh, line 239

    http=$(curl -s -o "${out_file}" -w "%{http_code}" \

    demo/mcp-demo-server-start.sh, line 264

    RUNTIME_HTTP=$(curl -s -o /tmp/authserver-demo.runtime.json -w "%{http_code}" \

    examples/_shared/native-as.sh, line 51

    until curl -sf "http://localhost:$AS_PORT/.well-known/oauth-authorization-server" >/dev/null 2>&1; do

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    examples/_shared/native-as.sh, line 19

    # Required env (read from caller's .env before invocation):

    .gitignore, line 29

    /examples/mcpserver/.env

    .gitignore, line 64

    # Environment / secrets

    Show more

    .gitignore, line 65

    .env

    .gitignore, line 67

    !.env.example

    AGENTS.md, line 126

    5. **Wire `.env` (or your project's secret manager).** Three values: `AUTHPLANE_ISSUER` (where the SDK fetches metadata), `AUTHPLANE_RESOURCE` or `AUTHPLANE_BASE_URL` (the URI the

    README.md, line 55

    - **Already have an MCP server running elsewhere?** To point this AS at *your* server and drive the whole OAuth flow by hand with `curl` - no SDK, no compose - see [Run the AS stan

    docs/guides/integrate/standalone-as-by-hand.md, line 75

    `examples/` `.env` files set it explicitly. Same value, two styles - see

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    the file cap was reached before every file was read.

    OBFUSCATION_FILE_CAP_REACHED

    examples/go/01-mcp-server-basic/go.mod, line 1

    module github.com/authplane-examples/go-mcp-01

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit d33d32e80e05. can reach a host that is not written as a fixed address. reads a credential or environment file. the file cap was reached before every file was read.

Date and source

Date checked:

View source

github.com

Commit graded: d33d32e80e057524d4e47fe705a9656357842931

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