generated: '2026-07-19'
method: derived
status: candidate
source: openapi/gray-swan-cygnal-openapi.json
note: Gray Swan does NOT publish a hosted/remote MCP server (its docs' "MCP & Tool Integration" refers
  to PROTECTING MCP-connected agents with Cygnal, not to an MCP server it operates). This is a DERIVED
  candidate tool list mapped from the Cygnal OpenAPI operations, for reference only. No canonical MCPServer
  pointer is wired in apis.yml because no server is genuinely present.
server:
  name: gray-swan-cygnal
  transport: http
  url: null
tools:
- name: cygnal_monitor
  description: Monitor messages/tools for policy violations without proxying inference.
  source_operation: openapi/gray-swan-cygnal-openapi.json#cygnal_monitor_cygnal_monitor_post
- name: cygnal_chat_completions
  description: OpenAI-compatible chat completions proxied with Cygnal filtering.
  source_operation: openapi/gray-swan-cygnal-openapi.json#cygnal_completions_cygnal_v1_chat_completions_post
- name: cygnal_anthropic_messages
  description: Anthropic Messages-compatible endpoint proxied with Cygnal filtering.
  source_operation: openapi/gray-swan-cygnal-openapi.json#cygnal_anthropic_messages_cygnal_v1_messages_post
- name: list_policies
  description: List enforcement policies.
  source_operation: openapi/gray-swan-cygnal-openapi.json#get_policies_policies_get
- name: create_policy
  description: Create a new enforcement policy.
  source_operation: openapi/gray-swan-cygnal-openapi.json#create_policy_policies_post
- name: get_policy
  description: Fetch a policy by id.
  source_operation: openapi/gray-swan-cygnal-openapi.json#get_policy_by_id_policies__policy_id__get
- name: update_policy
  description: Update a policy by id.
  source_operation: openapi/gray-swan-cygnal-openapi.json#update_policy_policies__policy_id__put
- name: delete_policy
  description: Delete a policy by id.
  source_operation: openapi/gray-swan-cygnal-openapi.json#delete_policy_policies__policy_id__delete
- name: get_policy_versions
  description: List historical versions of a policy.
  source_operation: openapi/gray-swan-cygnal-openapi.json#get_policy_versions_policies__policy_id__versions_get
deployment:
  mode: none
  verified: derived
  tools: 9
  checked: '2026-08-12'
  source: catalog MCP census