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Email verification for AI agents: verify, clean, and validate emails with self-onboarding and crypto payment.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 28 days 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 verifly-mcp-server MCP server exposes 17 tools, focused primarily on communication capabilities. Its published description reads: "Email verification for AI agents: verify, clean, and validate emails with self-onboarding and crypto payment". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates verifly-mcp-server F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Cross-tool shadowing" and "Data-exfiltration parameters". 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 verifly-mcp-server's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add verifly-mcp-server to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://verifly.email/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.
Call this FIRST if you have no Verifly API key. Returns how Verifly works and how to get access with no human: pay-as-you-go email verification API, 100 free credits on self-registration, no monthly f
Verify one email address with NO account or API key, so you can evaluate Verifly before registering. Rate-limited per IP (a few checks). Returns the same deliverability verdict and flags as the full A
Verify one email address in real time. Returns a deliverability verdict (valid / invalid / risky / unknown), the reason, detailed flags (disposable, role account, catch-all, MX, SMTP), a send/reject r
Synchronously verify a list of email addresses (best for up to a few hundred). Returns a per-address verdict for each email. For very large lists use the bulk async endpoint instead.
Clean a list of email addresses before an import or campaign: dedupes, removes invalid syntax, and (optionally) strips disposable and role accounts. Returns the cleaned list plus a summary of what was
Extract all email addresses found in a block of free-form text (notes, pasted documents, signatures). Optionally deduplicates and lowercases the results.
Check the DNS and deliverability health of an email domain: MX records, SPF, DMARC, and an overall health score. Useful for diagnosing why a domain bounces or for validating a sending domain.
Return the API key's remaining verification credits and recent usage (today / this month) and plan. Costs no credits.
Submit a list of email addresses as an asynchronous bulk verification job — the right tool for large lists. Returns immediately with a job_id, status, and the check_status_url / results_url to poll. S
Fetch the current status and progress of a bulk verification job by its job_id (status, percent progress, processed count, and a valid/invalid/risky summary). Poll this after submit_bulk until status
Fetch the full per-address results of a completed bulk verification job by job_id (each email's verdict, recommendation, and reason) plus the valid/invalid/risky summary and credits used. The job must
List the account's bulk verification jobs, most recent first, with their status, progress, and summary. Optionally filter by status and paginate. Use this to find past jobs and their job_ids.
Return detailed usage statistics for the account over a period (day, week, or month): total credits used, emails processed, request counts broken down by endpoint and source, a daily breakdown, and re
Return the account profile for the current API key: email, name, company, timezone, remaining credits, total credits used, number of API keys, and plan. Costs no credits.
List the credit packages available for purchase (id, name, credit amount, price in USD, and price per 1k credits). Use the returned package id with buy_credits.
Start a purchase of a credit package and return a way to pay. This does NOT complete a payment by itself — it returns a payment link / address: • method 'stripe' → returns a checkout_url. Paying by ca
Programmatically create a brand-new Verifly account — this is how an agent self-onboards with no human in the loop. Requires only an email and a password (min 8 chars; disposable email domains are rej
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: verify_email_demo
A tool description tries to alter the model’s use of another tool.
edits, then use verify_email.RecommendationDescriptions must describe only their own tool.
tool: submit_bulk
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
parameter "webhook_url"RecommendationRemove side-channel parameters; constrain tool inputs.
tool: submit_bulk
A tool description tries to alter the model’s use of another tool.
pending' — poll get_job_status until it is 'completed', then call get_job_resuRecommendationDescriptions must describe only their own tool.
tool: get_job_status
A tool description tries to alter the model’s use of another tool.
Poll this after submit_bulk until status is 'completed', then call get_job_RecommendationDescriptions must describe only their own tool.
tool: get_job_results
A tool description tries to alter the model’s use of another tool.
pleted' — check get_job_status first.RecommendationDescriptions must describe only their own tool.
tool: get_packages
A tool description tries to alter the model’s use of another tool.
package id with buy_credits.RecommendationDescriptions must describe only their own tool.
tool: buy_credits
A tool description tries to alter the model’s use of another tool.
package id from get_packages first.RecommendationDescriptions must describe only their own tool.
tool: register_account
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
rifly account + API key Programmatically create a brand-new Verifly accRecommendationRemove side-channel parameters; constrain tool inputs.
tool: register_account
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "password"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
tool: verify_email
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "verify_email"RecommendationScope tools to the minimum needed.
tool: clean_email_list
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "clean_email_list"RecommendationScope tools to the minimum needed.
tool: register_account
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "register_account"RecommendationScope tools to the minimum needed.
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