get_og_metadata
Extract Open Graph metadata, title, description, and favicon from any URL. Use this when an agent needs to preview a link — get the page title, description, OG image, favicon, and content type. Ideal for link previews, content summarization, and social media card extraction. Parameters: url — The...
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What get_og_metadata does on X402 Middleware
AI agents call get_og_metadata to retrieve information from X402 Middleware without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
url | string | Yes |
Parameters from the server's own tool schema.
Why get_og_metadata is rated Low
This tool performs only data retrieval from a specified URL. It reads metadata that is publicly available on web pages and returns information without modifying, deleting, executing code, or moving money. The operation is non-destructive and has no ability to alter state on the target system. While it involves a network request, it is fundamentally a query/fetch operation that falls clearly under the Read category.
From the tool's definition Tool extracts Open Graph metadata, title, description, and favicon from a URL — it retrieves and queries publicly available page metadata with 'no side effects' (read-only operations like get_og_metadata, fetch, extract).
Risk signalsAccepts URL/endpoint input (url)
Attacks that exploit this kind of access
The rule that runs get_og_metadata safely
PolicyLayer is an MCP gateway: it sits between your AI agents and X402 Middleware, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_og_metadata, this is the rule to start with:
get_og_metadata is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect X402 Middleware, apply this rule, and every get_og_metadata call is checked against it from then on.
Questions about get_og_metadata
Extract Open Graph metadata, title, description, and favicon from any URL. Use this when an agent needs to preview a link — get the page title, description, OG image, favicon, and content type. Ideal for link previews, content summarization, and social media card extraction. Parameters: url — The full URL to scrape metadata from (e.g. "https://example.com/page"). It is categorised as a Read tool in the X402 Middleware MCP Server, which means it retrieves data without modifying state.
get_og_metadata accepts 1 parameter: url. Required: url. The full parameter table on this page comes from the server's own tool schema.
Register the X402 Middleware MCP server in PolicyLayer and add a rule for get_og_metadata: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches X402 Middleware. Nothing to install.
get_og_metadata is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_og_metadata rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_og_metadata. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_og_metadata is provided by the X402 Middleware MCP server (@gadgethumans/x402). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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