List available endpoints at an API origin. Returns endpoint URLs with descriptions of what each does and the auth mode for each (paid or SIWX). Works with any origin, not just the registered ones. Call this when you need to see what routes are available at an origin — whether it's one of the reg...
Accepts URL/endpoint input (url)
Part of the Agentcash MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use discover_api_endpoints to create or modify resources in Agentcash. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call discover_api_endpoints repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Agentcash.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
tools:
discover_api_endpoints:
rules:
- action: allow
rate_limit:
max: 30
window: 60See the full Agentcash policy for all 11 tools.
Agents calling write-class tools like discover_api_endpoints have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
List available endpoints at an API origin. Returns endpoint URLs with descriptions of what each does and the auth mode for each (paid or SIWX). Works with any origin, not just the registered ones. Call this when you need to see what routes are available at an origin — whether it's one of the registered origins or any other origin you've identified as useful. Treat the auth mode as guidance for what the route may require; fetch handles both SIWX and payment. The response always indicates whether guidance is available. Guidance is documentation published by the API provider explaining how endpoints work together, edge cases, and usage tips. compact guidance is included automatically; set include_guidance=true to force-include full usage documentation when you need to compose two or more endpoints or need clarification on how the origin works.. It is categorised as a Write tool in the Agentcash MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Add a rule in your Intercept YAML policy under the tools section for discover_api_endpoints. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Agentcash MCP server.
discover_api_endpoints is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the discover_api_endpoints rule in your Intercept 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 Intercept policy for discover_api_endpoints. 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.
discover_api_endpoints is provided by the Agentcash MCP server (agentcash). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept