@one-source/mcp@5.21.0
Blockchain data, Deepstate and Standard Reserve markets, live chain queries, and API docs
AI Security Review
scanned 4d ago · by lpm-firewall-aiThe package enables runtime analytics by default and sends tool usage and client metadata to the vendor’s endpoint without documenting that collection. This is undisclosed telemetry, while the flagged API key validation sends the user-submitted key to the OneSource API host.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Analytics initializes when the HTTP server starts and records events as tools are called.
Impact
The vendor receives tool usage and client metadata without the package documentation disclosing the collection.
Mechanism
The package sets a default analytics endpoint and the analytics client posts buffered events to its /api/events route; users can disable this with ONESOURCE_ANALYTICS=false.
AI rationale
The package enables runtime analytics by default and sends tool usage and client metadata to the vendor’s endpoint without documenting that collection. This is undisclosed telemetry, while the flagged API key validation sends the user-submitted key to the OneSource API host.
Evidence
dist/analytics.jsdist/register-docs-tools.js.lpm-dependency-evidence-7ea01ff4-68bd-4999-abbc-917f249879ef/1/npm-linux/dist/analytics.js
Network endpoints1
1s-analytics.vercel.app
Decision evidence
public snapshotAI called this Suspicious at 89.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- The package configures analytics to use https://1s-analytics.vercel.app by default, with an opt-out setting.
- Tool-call analytics sends tool names, input parameter names, package version, client name/version, and a hashed session ID to the analytics endpoint.
- The CLI creates the analytics client during HTTP server startup; analytics is also used when MCP tools run.
- The README does not disclose this default runtime analytics collection.
Evidence against
- The submitted API key is validated against the OneSource API host, or a base URL the user configures.
- The analytics event fields shown contain usage metadata, not tool input values or credentials.
- The analytics client has an ONESOURCE_ANALYTICS=false opt-out.
Behavioral surface
CryptoEnvironmentVarsEvalFilesystemNetwork
HighEntropyStringsMinifiedPossibleObfuscation
Source & flagged code
4 flaggeddist/connect-page.jsView file
9const MIN_KEY_FAIL_MS = 250;
L10: // Accepts the base64url output of randomBytes(16) used as internalState in oauth.ts.
L11: const STATE_RE = /^[A-Za-z0-9_-]{1,100}$/;
...
L27: res.writeHead(status, JSON_HEADERS);
L28: res.end(JSON.stringify({ error }));
L29: }
...
L31: try {
L32: const base = (process.env.ONESOURCE_BASE_URL ?? 'https://api.onesource.io').replace(/\/+$/, '');
L33: const r = await fetch(`${base}/api/chain/chain-id?network=ethereum`, {
Critical
Credential Exfiltration
Source appears to send environment or credential material to an external endpoint.
dist/connect-page.jsView on unpkg · L99Trigger-reachable chain: manifest.bin -> dist/cli.js -> dist/connect-page.js
L9: const MIN_KEY_FAIL_MS = 250;
L10: // Accepts the base64url output of randomBytes(16) used as internalState in oauth.ts.
L11: const STATE_RE = /^[A-Za-z0-9_-]{1,100}$/;
...
L27: res.writeHead(status, JSON_HEADERS);
L28: res.end(JSON.stringify({ error }));
L29: }
...
L31: try {
L32: const base = (process.env.ONESOURCE_BASE_URL ?? 'https://api.onesource.io').replace(/\/+$/, '');
L33: const r = await fetch(`${base}/api/chain/chain-id?network=ethereum`, {
Critical
Trigger Reachable Dangerous Capability
A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.
dist/connect-page.jsView on unpkg · L9Findings
2 Critical2 High3 Medium6 Low
CriticalCredential Exfiltrationdist/connect-page.js
CriticalTrigger Reachable Dangerous Capabilitydist/connect-page.js
HighTrigger Reachable Credential Exfiltrationdist/connect-page.js
HighSemantic Analysis Limiteddist/register-docs-tools.js#virtual:normalized:round1
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowNon Install Lifecycle Scripts
LowScripts Present
LowEval
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @one-source/mcp@5.21.0.
See all versions of @one-source/mcp for other recorded verdicts.
- Review the evidence and your use of @one-source/mcp@5.21.0 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
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