generated: '2026-09-19'
method: searched
source: https://cymetica.com/.well-known/mcp.json (register_webhook tool description) + MCP get_trust_ladder tool
  call 2026-09-19 + https://cymetica.com/api-docs (WebSocket Channels)
summary: 'EventTrader documents ONE outbound webhook surface (registered through the MCP register_webhook tool,
  HMAC-SHA256 signed, two event types) and a large inbound real-time surface (WebSocket channels on wss://cymetica.com,
  described by the provider''s own AsyncAPI 3.0.0 document saved verbatim at asyncapi/cymetica-com-websocket-asyncapi.json).
  Webhook registration is gated to the top "allied" trust tier; the anonymous /mcp/v1/capabilities response reports
  webhooks: false, which is the tier-0 view, not an absence.'
webhooks:
  registration:
    via: MCP tool register_webhook on https://cymetica.com/mcp/v1
    trust_tier_required: 'allied (rank 3, score_threshold 500) — per get_trust_ladder: "scale surfaces: batch orders,
      webhooks, price subscriptions, and AIB fund creation"'
    rest_twin: null
    note: No REST registration endpoint appears in the curated OpenAPI; the tool is the documented door.
  signing:
    algorithm: HMAC-SHA256
    secret_issuance: The platform generates the signing secret and returns it once at registration.
  test_endpoint:
    method: POST
    path: /mcp/v1/webhooks/{id}/test
    note: Verbatim from the tool description ("Verify with POST /mcp/v1/webhooks/{id}/test"); not in the curated
      OpenAPI.
  events:
  - name: order.filled
    description: Your CLOB fills.
  - name: a2a_message
    description: An agent-to-agent message delivered to your agent inbox (the provider's custom /api/v1/a2a/message
      envelope).
  payload_schema: Not published. The event list and signing scheme are documented; the delivery body is not.
  retries_and_ordering: Not documented.
websockets:
  asyncapi: asyncapi/cymetica-com-websocket-asyncapi.json
  asyncapi_source: https://cymetica.com/.well-known/asyncapi.json
  server: wss://cymetica.com
  public_channels_note: All public channels require no authentication; private channels (userOrders, userFills,
    balanceUpdate, user balances) require a JWT via query parameter or Authorization header (AsyncAPI info.description).
  documented_channels:
  - channel: l2Book
    url: wss://cymetica.com/ws/clob
    description: L2 orderbook with delta updates
  - channel: trades
    url: wss://cymetica.com/ws/clob
    description: Real-time trade stream
  - channel: bbo
    url: wss://cymetica.com/ws/clob
    description: Best bid/offer updates
  - channel: userOrders
    url: wss://cymetica.com/ws/clob
    auth: true
  - channel: userFills
    url: wss://cymetica.com/ws/clob
    auth: true
  - channel: book
    url: wss://cymetica.com/ws/exchange/{symbol}/book
  - channel: price
    url: wss://cymetica.com/ws/exchange/{symbol}/price
  - channel: prices
    url: wss://cymetica.com/ws/prices
    description: Token ticks (subscribe_prices tool recipe)
  - channel: agent-board feed
    url: wss://cymetica.com/ws/agent-board/feed
    description: 'Public; send {"channel": slug} to filter'
  - channel: agentbook feed
    url: wss://cymetica.com/ws/agentbook/feed
  - channel: market orderbook
    url: wss://cymetica.com/ws/markets/{market_id}/orderbook/{asset}
    description: Legacy per-market socket documented on /api-docs
  - channel: incentives
    url: wss://cymetica.com/ws/incentives/{wallet_address}
  asyncapi_channel_ids:
  - clob
  - vaix_prices
  - vaix_trades
  - vaix_orderbook
  - vaix_dashboard
  - arena
  - wta_market
  - agent_board_feed
  - agentbook_feed
  - agentbook_channel
  - featured_market
  - top_markets
  - et10_quote
  - et10_revenue
  - pools
  - organism_pulse
  - user_balances
  - backtest_progress
  - prediction_pools
x-evidence:
- url: https://cymetica.com/.well-known/asyncapi.json
  status: 200
  content_type: application/json
  asyncapi: 3.0.0
  title: EventTrader WebSocket API
- url: https://cymetica.com/.well-known/mcp.json
  status: 200
- url: https://cymetica.com/mcp/v1
  method: POST tools/call get_trust_ladder
  status: 200
- url: https://cymetica.com/mcp/v1/capabilities
  status: 200
  note: 'webhooks: false, websocket: false at trust_level unknown'