MCP, MCP server
DAG Studio WebMCP
A human, AI causal DAG workspace for the OpenAI 2026 WebMCP Challenge.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
Rescanned at commit ed7aa63197a3, unchanged since the check below.
NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST OBFUSCATION_FILE_OVER_READ_CAP
Why this grade
- NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
ai-proxy/worker.js, line 38
async fetch(request, env) { - NETWORK_UNNAMED_HOST Low
Calls a fixed host that the description does not name.
ai-proxy/worker.js, line 38
async fetch(request, env) { - OBFUSCATION_FILE_OVER_READ_CAP Note
A file was over the read cap and was not fully read.
index.html, line 1
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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. can reach api.anthropic.com. The description does not name that host.
NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST
ai-proxy/worker.js, line 38
async fetch(request, env) {
ai-proxy/worker.js, line 78
upstream = await fetch(url, {
mcp-bridge/browser.js, line 58
try { await fetch(endpoint + '/disconnect', { method: 'POST', headers: { Authorization: `Bearer ${session.id}.${session.hostToken}` }, keepalive: true }); }
Show more
mcp-bridge/browser.js, line 85
const response = await fetch(endpoint + '/sessions', { method: 'POST', signal: AbortSignal.timeout(15_000) });
mcp-bridge/browser.js, line 91
const ws = new WebSocket(wsUrl, ['canvas-bridge', 'auth.' + session.hostToken]);
mcp-bridge/src/worker.ts, line 67
async fetch(request: Request): Promise<Response> {
mcp-bridge/src/worker.ts, line 166
async fetch(request: Request, env: Env): Promise<Response> {
mcp-bridge/src/worker.ts, line 207
return cors(await env.SESSIONS.getByName(id).fetch(request));
Secrets
Pass
No read of a credential file or secret environment variable found.
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Note
a file was over the read cap and was not fully read.
OBFUSCATION_FILE_OVER_READ_CAP
index.html, line 1
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Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit ed7aa63197a3. can reach a host that is not written as a fixed address. can reach api.anthropic.com. The description does not name that host. a file was over the read cap and was not fully read.
Date and source
Date checked:
github.com
Commit graded: ed7aa63197a3dc00771e208b056a3ede574de20a
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