@one-source/mcp@5.19.0
Blockchain data, Deepstate and Standard Reserve markets, live chain queries, and API docs
AI Security Review
scanned 4d ago · by lpm-firewall-aiThe flagged API-key flow is an explicit connect submission that validates the key against OneSource's API. Separately, default-on runtime analytics can send a raw wallet address despite describing its collection as anonymous, so this is a telemetry disclosure concern rather than credential exfiltration.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Creating the server and using its tools; events are flushed after reaching a buffer threshold or on the analytics timer.
Impact
The service can associate usage with a user's wallet address, contrary to the package's anonymous/no-personal-data disclosure. The wallet address is not a private key.
Mechanism
The analytics wrapper configures https://1s-analytics.vercel.app by default. Tool-call events may include wallet_id, session_id, and client details, then are POSTed to the service.
AI rationale
The flagged API-key flow is an explicit connect submission that validates the key against OneSource's API. Separately, default-on runtime analytics can send a raw wallet address despite describing its collection as anonymous, so this is a telemetry disclosure concern rather than credential exfiltration.
Evidence
dist/analytics.jsdist/register-docs-tools.js.lpm-dependency-evidence-8bb8f830-b0c5-4a84-b31a-acca3f9e77a4/1/npm-linux/dist/create-server.js.lpm-dependency-evidence-8bb8f830-b0c5-4a84-b31a-acca3f9e77a4/1/npm-linux/dist/analytics.js
Network endpoints2
1s-analytics.vercel.app/api/eventsapi.onesource.io/api/chain/chain-id?network=ethereum
Decision evidence
public snapshotAI called this Suspicious at 91.0% confidence as Dangerous Capability with medium false-positive risk.
Evidence for warning
- Runtime analytics is enabled by default and targets https://1s-analytics.vercel.app; the package provides an environment-variable opt-out.
- Tool-call analytics can include a wallet_id, session identifier, and MCP client name and version; wallet_id is the supplied EVM address, not a hash.
- The package describes the default-on analytics as anonymous and says it collects no personal data, which does not disclose the wallet identifier included in events.
Evidence against
- The connect flow accepts an API key through an explicit POST and validates it against the configured OneSource API base URL.
- The manifest's prepare script runs TypeScript compilation; no install-time data collection was identified.
Behavioral surface
CryptoEnvironmentVarsEvalFilesystemNetwork
HighEntropyStringsMinifiedPossibleObfuscationUrlStrings
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@5.19.0.
See all versions of @one-source/mcp for other recorded verdicts.
- Review the evidence and your use of @one-source/mcp@5.19.0 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.