Search Unsplash for cover images. FREE. Requires Unsplash access_key via setup. Subject to Unsplash's 50 req/h demo or 5000 req/h production rate limit. Returns: { results: [{ url_full, url_regular, url_small, photographer, photographer_url, attribution_html, alt }] }. Common errors: missing Unsp...
Risk signalsAccepts freeform code/query input (query)
Part of the Pipepost server.
Free to start. No card required.
AI agents call cover_image to retrieve information from Pipepost without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though cover_image only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"cover_image": {}
}
}See the full Pipepost policy for all 29 tools.
These attack patterns abuse exactly the kind of access cover_image gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Search Unsplash for cover images. FREE. Requires Unsplash access_key via setup. Subject to Unsplash's 50 req/h demo or 5000 req/h production rate limit. Returns: { results: [{ url_full, url_regular, url_small, photographer, photographer_url, attribution_html, alt }] }. Common errors: missing Unsplash key (VALIDATION_ERROR), rate-limit exceeded (PLATFORM_ERROR).. It is categorised as a Read tool in the Pipepost MCP Server, which means it retrieves data without modifying state.
Register the Pipepost MCP server in PolicyLayer and add a rule for cover_image: 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 Pipepost. Nothing to install.
cover_image 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 cover_image 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 cover_image. 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.
cover_image is provided by the Pipepost MCP server (pipepost-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 29 Pipepost tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.