Bug: Not able to view the output of /usage command on claude agent

[videh25]

I had been trying to see the usage statistics while using claude code on agentic.nvim. However, the output was empty.

Asked my nvim config claude agent for this and here is what it replied:

Root cause found. agentic.nvim deliberately silences /usage output at session_manager.lua:374-378:

elseif update.sessionUpdate == "usage_update" then
    -- Usage updates contain token/cost information - currently informational only
    -- Fields: used (tokens), size (context window), cost (optional: amount, currency)
    -- Keeping silent for now to avoid "press any key" prompts on large JSON output

When you run /usage, the agent's response comes back as a usage_update session message, and that handler is intentionally a no-op. The README mentions a "Smart Context" feature for usage info but the plugin's chat widget doesn't render it.

Seems like the plugin is intentionally not showing the statistics.

[carlos-algms]

Confirmed:

[2026-05-06 18:16:28] [agentic.acp.acp_client:282] Claude Agent ACP response:  {
  jsonrpc = "2.0",
  method = "session/update",
  params = {
    sessionId = "f2366678-fd3e-410a-87fa-98ba42370005",
    update = {
      cost = {
        amount = 0.21130025,
        currency = "USD"
      },
      sessionUpdate = "usage_update",
      size = 1000000,
      used = 49226
    }
  }
}

That's going to be a difficult one.
It's ignored because Claude was sending it from time to time, unasked for.

Since you asked for it, I would assume it's either a bug in their implementation or a re-use of code that slipped through the cracks.

/usage should behave the same as /context
The agent should send a normal chat message with a summary of what it knows.
But these are assumptions on my side for now, needs broader investigation.