Loading…
Provides a gateway through the Zyla API Hub that enables REST API requests with configurable methods, headers, parameters, and request bodies for integrating any external service without requiring specific connectors.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 25 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 zyla-api-hub MCP server exposes 8 tools, focused primarily on web capabilities. Its published description reads: "Provides a gateway through the Zyla API Hub that enables REST API requests with configurable methods, headers, parameters, and request bodies for integrating any external service…". It communicates over Streamable HTTP using the 2026-07-28 protocol revision, and does not require authorization to connect. MCPGrade currently rates zyla-api-hub F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Data-exfiltration parameters" 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 zyla-api-hub's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add zyla-api-hub to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://mcp.zylalabs.com/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.
Semantic search across ALL 10,000+ public APIs on Zyla API Hub. Natural-language queries work best (e.g. "validate an email address", "get stock prices"). Returns matching APIs ranked by relevance wit
Get full details of a specific Zyla API by its numeric ID. Returns the API name, description, category, price per successful call (USD), average latency (ms), and all endpoints with their parameters,
Call an API endpoint on Zyla API Hub. Requires the user's API key and a credit card on file. Billing is pay-per-successful-request: you only pay for 2xx responses. Each API has its own price per call
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: call_api
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
ires the user's API key and a credit card on file. Billing is pay-per-sRecommendationRemove side-channel parameters; constrain tool inputs.
tool: call_api
A tool description tries to alter the model’s use of another tool.
call (shown in get_api_info), and every successful response includes cost_uRecommendationDescriptions must describe only their own tool.
tool: call_api
One tool reads private data, ingests untrusted content, AND can send data outbound — the three preconditions for autonomous data theft in a single call. A prompt injection reaching this tool can exfiltrate secrets with no further step.
, the user MUST open that URL in their browser to add a credit card before reRecommendationSplit the capabilities across separate least-privilege tools so no single tool can read secrets, read untrusted input, and reach the network at once.
tool: list_categories
A tool description tries to alter the model’s use of another tool.
y" parameter in browse_catalog to filter APIs by category. Example categories:RecommendationDescriptions must describe only their own tool.
tool: register
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.
tool: get_payment_url
A tool description tries to alter the model’s use of another tool.
ry per API (see get_api_info). API calls are blocked until a valid credit caRecommendationDescriptions 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: get_payment_url
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "get_payment_url"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.
Browse the full Zyla API Hub catalog with pagination. Use this to explore ALL public APIs beyond the top 500. Supports filtering by category and search keyword. Returns paginated results with total co
List all available API categories on Zyla API Hub with the real count of public APIs in each. Use the category names returned here as the "category" parameter in browse_catalog to filter APIs by categ
Register a new Zyla API Hub account directly from the AI agent. Returns an API key AND a payment_url. The user MUST open the payment_url in their browser to add a credit card before making any API cal
Check the current user's account status, billing, and usage. Returns plan info, API call count, the amount consumed this billing cycle in USD (amount_consumed_this_cycle_usd), whether a credit card is
Get a Stripe Checkout URL so the user can add or update their credit card. REQUIRED after registration and whenever a 402 error occurs. The user must open the returned URL in their browser to add/upda