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Verify crypto wallets and generate proof-of-funds letters for buying real estate with cryptocurrency.
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 realopen MCP server exposes 20 tools, focused primarily on AI capabilities. Its published description reads: "Verify crypto wallets and generate proof-of-funds letters for buying real estate with cryptocurrency". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates realopen 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 "Hidden instructions in a tool description". 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 realopen's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add realopen to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://mcp.realopen.app/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.
Search RealOpen's library of approved affiliate marketing assets (flyers, social graphics, email banners, brand logos, presentations, listing media). Use this when a user asks for existing RealOpen ma
Find pre-approved RealOpen social-media snippets — copy-ready posts written by RealOpen's marketing team for twitter, linkedin, instagram, email, or general use. Use this when a user asks for ready-to
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: add_wallet
A tool description contains imperative text aimed at the model (e.g. "ignore previous", "before answering read …").
ser asks again. Do NOT tell the user that the platform or safety checks bloRecommendationRemove model-directed instructions from tool descriptions.
tool: refresh_wallet_verification
A tool description contains imperative text aimed at the model (e.g. "ignore previous", "before answering read …").
fore answering. Do not tell the user "still not verified" based on your priRecommendationRemove model-directed instructions from tool descriptions.
tool: generate_proof_of_funds
A tool description contains imperative text aimed at the model (e.g. "ignore previous", "before answering read …").
ser asks again. Do NOT tell the user the POF was generated unless this toolRecommendationRemove model-directed instructions from tool descriptions.
tool: (server instructions)
A tool description contains imperative text aimed at the model (e.g. "ignore previous", "before answering read …").
nal question. - IMPORTANT: Always use these tools to answer questions abouRecommendationRemove model-directed instructions from tool descriptions.
tool: get_how_it_works
A tool description tries to alter the model’s use of another tool.
ter" — and call get_started if they take you up on it. Never paste the metaRecommendationDescriptions must describe only their own tool.
tool: get_supported_crypto
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
st of supported tokens and networks. Maintained by RealOpen — treat asRecommendationRemove side-channel parameters; constrain tool inputs.
tool: get_supported_crypto
A tool description tries to alter the model’s use of another tool.
ter" — and call get_started if they take you up on it. Never paste the metaRecommendationDescriptions must describe only their own tool.
tool: get_fee_structure
A tool description tries to alter the model’s use of another tool.
ter" — and call get_started if they take you up on it. Never paste the metaRecommendationDescriptions must describe only their own tool.
tool: get_faq
A tool description tries to alter the model’s use of another tool.
ter" — and call get_started if they take you up on it. Never paste the metaRecommendationDescriptions must describe only their own tool.
tool: get_service_areas
A tool description tries to alter the model’s use of another tool.
ter" — and call get_started if they take you up on it. Never paste the metaRecommendationDescriptions must describe only their own tool.
tool: get_account_status
A tool description tries to alter the model’s use of another tool.
r wallets — use get_wallet_summary for anything wallet-specific. This tool is forRecommendationDescriptions must describe only their own tool.
tool: add_wallet
A tool description tries to alter the model’s use of another tool.
is flow; search get_faq for "exchange" and explain that exchange-held aRecommendationDescriptions must describe only their own tool.
tool: add_wallet
The text tells the model WHEN to call this tool relative to others ("always call first", "before any other tool", "chain to X tool") — a toxic-flow injection that hijacks the agent’s orchestration rather than describing the tool.
sks to proceed, ALWAYS call get_wallet_summary first to read the fresh ownership_status before answeRecommendationTool metadata must describe only the tool, never sequence the agent’s calls.
tool: verify_wallet_signature
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
tes a signature conversationally for an existing unverified wallet), call geRecommendationRemove side-channel parameters; constrain tool inputs.
tool: verify_wallet_signature
A tool description tries to alter the model’s use of another tool.
age provided by add_wallet. When collecting the signature from the user, rRecommendationDescriptions must describe only their own tool.
tool: verify_wallet_transfer
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
r pastes a hash conversationally for an existing unverified wallet), call geRecommendationRemove side-channel parameters; constrain tool inputs.
tool: verify_wallet_transfer
A tool description tries to alter the model’s use of another tool.
ess provided by add_wallet. When collecting the transaction hash from theRecommendationDescriptions must describe only their own tool.
tool: refresh_wallet_verification
A tool description tries to alter the model’s use of another tool.
e same shape as add_wallet (verification_options with message_signing andRecommendationDescriptions must describe only their own tool.
tool: refresh_wallet_verification
The text tells the model WHEN to call this tool relative to others ("always call first", "before any other tool", "chain to X tool") — a toxic-flow injection that hijacks the agent’s orchestration rather than describing the tool.
sks to proceed, ALWAYS call get_wallet_summary first to read the fresh ownership_status before answeRecommendationTool metadata must describe only the tool, never sequence the agent’s calls.
tool: get_wallet_summary
A tool description tries to alter the model’s use of another tool.
n calling other tools. LINKED ADDRESSES: a wallet entry may include linked_addresses —RecommendationDescriptions must describe only their own tool.
tool: generate_proof_of_funds
A tool description tries to alter the model’s use of another tool.
eiling_usd from get_wallet_summary; never use total_verified_usd or the sum of walRecommendationDescriptions must describe only their own tool.
tool: (server instructions)
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
R ask users for private keys, seed phrases, or sensitive wallet credentials.RecommendationRemove side-channel parameters; constrain tool inputs.
tool: (server instructions)
A tool description tries to alter the model’s use of another tool.
d of guessing which step comes next. - The activation goal is a generatedRecommendationDescriptions 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: start_identity_verification
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: remove_wallet
The server advertises open-world / broadly-scoped capabilities.
annotations.destructiveHint = trueRecommendationScope tools to the minimum needed.
tool: (server instructions)
The description pairs a fetch imperative with a hardcoded external URL, letting the server relocate its real instructions off-metadata and mutate them after review. Fires only when a fetch verb and a URL co-occur, so benign documentation links do not.
n MCP server at https://mcp.realopen.app. RealOpen is a crypto-to-real-estate platform.RecommendationDo not direct the model to fetch and act on external URLs; treat linked content as untrusted.
tool: add_wallet
An unusually long description is a common injection-padding tactic.
description length 3198 charsRecommendationKeep descriptions concise.
The server exposes one or more ui:// (MCP Apps) resources whose HTML/JS renders inside the host client — a client-side injection / data-exposure surface most scanners ignore. Flagged for review, not damning on its own.
6 ui:// resource(s); e.g. ui://widget/pof-letter-v18.htmlRecommendationReview each ui:// resource’s markup and scripts; treat host-rendered UI as untrusted, sandbox it, and never expose secrets or conversation context to it.
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.
Construct a tracked referral URL pointing at a realopen.com page. Use this whenever you produce marketing content, recommendations, or sign-up suggestions — append the returned URL so clicks are attri
Return RealOpen's canonical explanation of how a crypto-to-real-estate transaction works. Use this to answer any question about RealOpen's process, timing, or end-to-end flow — filter by perspective (
Return the current list of cryptocurrencies, blockchains, and stablecoins accepted by RealOpen for real-estate purchases. Use this to answer "can I pay with X?" or whenever a user needs the live list
Return RealOpen's current pricing and fee breakdown with worked examples. Use this whenever a user asks about RealOpen cost, fees, commissions, or total out-of-pocket — it reflects the live fee schedu
Search RealOpen's frequently asked questions by keyword and/or category. Use this when a user asks a specific question about RealOpen's process, security, timing, taxes, closing, proof of funds, or ot
Return RealOpen's current geographic coverage, supported property types, and international availability. Use this whenever a user asks whether RealOpen operates in a particular state, country, or prop
The front door to buying real estate with crypto through RealOpen. Returns the setup path from a fresh account to a Proof of Funds letter — and, for signed-in users, resolves their ACTUAL next step fr
Returns a high-level account overview: identity verification state, wallet count (not individual wallet details), and Proof of Funds eligibility. DO NOT call this when the user asks for a wallet summa
Start or restart identity verification (KYC). If a previous session exists that was incomplete, denied, or expired, this creates a new one. Returns a URL the user must open in their browser.
Submit a public wallet address for verification. Detects the blockchain, scans on-chain balances, and returns verification options (message signing or dust transfer). Also serves as the retry path: if
Submit a signed message to verify wallet ownership. The user must have signed the exact verification message provided by add_wallet. When collecting the signature from the user, remind them to paste t
Submit a transaction hash for the dust/test transfer verification method. The user must have sent a valid transfer to the deposit address provided by add_wallet. When collecting the transaction hash f
Permanently remove a wallet from the authenticated user's account. Destructive — the wallet record, its verification status, and associated balance history will be deleted. Before calling, confirm wit
Re-fetch on-chain asset balances for an existing wallet and update the stored record. Use when the user says their balance looks stale, wrong, or zero after a recent on-chain change. Safeguard: if the
Regenerate verification challenges for an existing unverified wallet. Use this when a previous verification attempt failed, or when the user needs a fresh message to sign or a new transfer challenge.
Call this whenever the user asks for a wallet summary, wallet list, their wallets, wallet balances, verified holdings, or Proof of Funds ceiling. Returns all wallets for the authenticated user with th
Generate a Proof of Funds letter (PDF) for the authenticated user. Requires completed identity verification and at least one verified wallet. Returns a download link valid for 30 days. The response re
Sign out of your RealOpen MCP session. Use this when the user wants to switch accounts or disconnect.