Reference

ctx_call

Input contract and parameters for ctx_call.

Status by featureReviewed September 2026

MCP tool · Read, search & shell

Call this tool through your MCP client. Its availability depends on your active configuration and profile.

This registry contract is separate from the SDK. For terminal commands, use the CLI reference.

Parameters

Generated from the registered input schema. “Required” reflects the schema; individual actions can impose additional requirements.

argumentsobject

Tool arguments

namestringRequired

Tool name

Exact JSON schema

Inspect the complete input schema

{
  "properties": {
    "arguments": {
      "description": "Tool arguments",
      "type": "object"
    },
    "name": {
      "description": "Tool name",
      "type": "string"
    }
  },
  "required": [
    "name"
  ],
  "type": "object"
}

Runtime description

The following is the tool's own agent-facing description, reproduced from the reviewed registry. It can contain implementation terminology; it does not expand the public stability commitment.

Read the agent-facing description

Invoke any non-core lean-ctx tool by name — for tools not exposed as standalone MCP tools.
Categories: arch, debug, memory, batch, agent, util. Find exact names with
ctx_discover_tools (query=keyword; empty query lists all). Cannot invoke itself.

Sources & versions3 references Reviewed 18 Sept 2026

mcp_manifest.rsrust/src/core/mcp_manifest.rsReviewed checkout
registry.rsrust/src/server/registry.rsReviewed checkout
dynamic_tools.rsrust/src/server/dynamic_tools.rsReviewed checkout

Core checkout: 50fbff09c9
Installed runtime: 3.10.2
SDK release: 1.1.0

Separate baselines for source, CLI/configuration and SDK contracts. Review does not certify every platform or integration.

Versions & compatibility