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Creates keyless, non-custodial crypto payment links and tip jars using only a wallet address.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 1 month ago Due for re-check
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The shieldz MCP server exposes 4 tools, focused primarily on general-purpose capabilities. Its published description reads: "Creates keyless, non-custodial crypto payment links and tip jars using only a wallet address". It communicates over Streamable HTTP using the 2026-07-28 protocol revision, and does not require authorization to connect. MCPGrade currently rates shieldz F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Hidden instructions in a tool description" and "Cross-tool shadowing". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check shieldz's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add shieldz to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://shieldz.cash/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
Create a one-time crypto payment link with ZERO setup, no account, no API key. Give a destination wallet address and an amount; get back a shareable pay_url, an embeddable button, and a manage_url. No
Create a reusable 'pay what you want' tip jar with ZERO setup. The payer chooses the amount. Returns a shareable /tip url, an embeddable button, and a manage_url. Idempotent per wallet address. Non-cu
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: create_unlock
A tool description contains imperative text aimed at the model (e.g. "ignore previous", "before answering read …").
nt, no API key. IMPORTANT: the acceptable-use policy forbids adult, illegaRecommendationRemove model-directed instructions from tool descriptions.
tool: (server instructions)
A tool description tries to alter the model’s use of another tool.
rypto payments. create_payment_link, create_tip_jar and create_unlock need only a wRecommendationDescriptions must describe only their own tool.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
tool: create_payment_link
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "create_payment_link"RecommendationScope tools to the minimum needed.
tool: create_tip_jar
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "create_tip_jar"RecommendationScope tools to the minimum needed.
tool: create_unlock
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "create_unlock"RecommendationScope tools to the minimum needed.
tool: get_account_status
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "get_account_status"RecommendationScope tools to the minimum needed.
Vantaj uptime monitoring via MCP — manage monitors, heartbeats, incidents, and status pages.
Unified gateway to Algeria's TKAWEN ecosystem: commerce, certification, and AI tools.
Provides access to the Cohereon Doctrine AI safety framework with governance components, tiered access, and agent onboarding.
Agentic rails for complex workflows with receipts, fees, and MCP tool access.
Structural TC39 spec lookup for ECMA-262 and ECMA-402 in AI agents, SHA-pinned and offline-first.
Structural TC39 spec lookup for ECMA-262 and ECMA-402 in AI agents, SHA-pinned and offline-first.
Create a keyless pay-to-unlock page: sell a file link, license key, or secret text (up to 100,000 chars). The buyer pays the set USD price in crypto straight to the given wallet, then the payload is r
Look up a keyless Shieldz account by its manage_token (returned when you create a payment link or tip jar). Returns settlement details, tip jars, totals (paid/pending), and the invoice list as structu