Returns the list of markets available for a sport on a specific book. Use this BEFORE calling quick_screen to know which markets to query. Soccer uses Draw No Bet / Match Handicap / Total Goals (not Moneyline / Spread / Total). Tennis uses Game Handicap / Set Handicap / Total Games (not Spread / ...
AI agents call get_market_registry to retrieve information from PropProfessor MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a straightforward data retrieval operation that queries available markets. It has no capability to create, modify, delete, execute code, or trigger external operations. It generates no side effects and is used purely for reconnaissance/information gathering before other tools are invoked.
From the tool's definition Tool returns a list of available markets for a sport on a specific book. It retrieves data with no modification or side effects.
Attacks that exploit this kind of access
Returns the list of markets available for a sport on a specific book. Use this BEFORE calling quick_screen to know which markets to query. Soccer uses Draw No Bet / Match Handicap / Total Goals (not Moneyline / Spread / Total). Tennis uses Game Handicap / Set Handicap / Total Games (not Spread / Total). RECOMMENDED WORKFLOW: (1) get_market_registry → (2) quick_screen(leagues, markets=[...]) → (3) validate_play on top candidates → (4) log_pick. It is categorised as a Read tool in the PropProfessor MCP MCP Server, which means it retrieves data without modifying state.
Register the PropProfessor MCP server in PolicyLayer and add a rule for get_market_registry: 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 PropProfessor MCP. Nothing to install.
get_market_registry 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_market_registry 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_market_registry. 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_market_registry is provided by the PropProfessor MCP server (j17drake/propprofessor-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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