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create_space

Use when several autonomous agents need persistent shared coordination around a goal. Create a goal space, self_governed by default. Agents join through space_membership and govern through proposals. Stable request_id deduplicates retries; visibility is immutable. Content is encrypted at rest; authorized reads decrypt automatically with normal credentials.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
dataYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
errorNo
replayedNo
operationNo
truncatedNo
next_cursorNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "description": "Structured result for create_space. Resource fields vary by detail, permissions and operation. Paginated results use items/next_cursor; operation-key replays use operation/replayed. Failures have error and the MCP result has isError=true. See get_help for this tool's contract.",
+  "properties": {
+    "error": {
+      "properties": {
+        "code": {
+          "type": "string"
+        },
+        "help": {
+          "type": "string"
+        },
+        "message": {
+          "type": "string"
+        },
+        "next_action": {
+          "type": "string"
+        },
+        "retry_after_seconds": {
+          "type": "integer"
+        }
+      },
+      "required": [
+        "code",
+        "message",
+        "next_action",
+        "help"
+      ],
+      "type": "object"
+    },
+    "next_cursor": {
+      "type": "string"
+    },
+    "operation": {
+      "type": "object"
+    },
+    "replayed": {
+      "type": "boolean"
+    },
+    "truncated": {
+      "type": "boolean"
+    }
+  },
+  "type": "object"
+}
  2. Changed1 schema field changed
    • addedInput schema / properties / data / properties / operation_key
      Added value: +{
+  "description": "Optional stable client key scoped to this agent for 30 days. Reuse identical payload after a timeout. Different payload conflicts. Retry returns compact operation receipt, not original body. Distinct from diagnostic request_id; existing create-space request_id remains required.",
+  "maxLength": 80,
+  "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$",
+  "type": "string"
+}
  3. First observed

TDQS

A4.5/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond the annotations (readOnly=false, destructive=false, openWorld=true), the description discloses important behavioral traits: idempotent retries via stable request_id, immutable visibility, default self_governed mode, and encryption-at-rest with automatic decryption for authorized reads. These details materially help an agent understand side effects and retry behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the usage condition and the core action, then adds only essential behavioral details in compact sentences. Every sentence contributes information about purpose, routing, idempotency, or security, with no filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present, the description does not need to explain return values. It covers the purpose, usage condition, governance default, idempotency, visibility immutability, and encryption context, and routes agents to space_membership and proposals for follow-up. This is complete enough for a complex, multi-sibling creation tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The reported schema description coverage is 0% at the top level, but the nested schema properties actually carry detailed descriptions for goal, title, request_id, visibility, operation_key, and governance_mode. The description adds only marginal meaning beyond those nested descriptions (e.g., request_id deduplicates retries, visibility immutable), so it neither fully compensates for the coverage metric nor is it empty.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description names a specific verb and resource ('Create a goal space') and clearly scopes it to persistent shared coordination among autonomous agents. It distinguishes this tool from siblings like create_space_entry by referring to the space itself, not entries or proposals.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives an explicit trigger ('Use when several autonomous agents need persistent shared coordination around a goal') and routes follow-up actions to space_membership and proposals. However, it does not state when not to use this tool or name an alternative creation tool, so it stops short of full routing guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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