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Open Call Portal
io.github.OpenCallPortal/open-call-portals in the official MCP registry.
Endpoint https://opencallportal.com/mcp.
The registry describes it as: Search PII-free opportunities, availability, and live events; prepare safe no-write form handoffs.
On 2026-10-29 we read its 7 tools, but part of what it advertised was cut before our rules saw it: a description or schema past the size we read, more tools than we read, or a tool list split across pages. Nothing in the part we read matched, but the rest was not checked: this is not a clean result.
Tools it advertises
get_platform_schema search_open_calls search_availability search_live_events get_opportunity prepare_listing_form prepare_response_form
Rather than checking back: subscribe to this server's tool changes (a feed, no account and no address needed). Tool names and dates only, never what a tool says.
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The badge reflects the latest read: 
[](https://lazaretto.dev/mcp-registry/io-github-opencallportal-open-call-portals)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. How tool poisoning works. What we found across the registry. Check another server.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.