R3

Who am I in R3?

r3_whoami

Read-only

Report the R3 account you act for, how you are connected (an agent key, or an app connection made with Sign in with R3), what you are allowed to do, the account's plan (its name and how many live projects it allows and uses: going live needs one), and whether the R3 platform is reachable. It verifies the credential end to end and names the capabilities it carries, so it is the call that confirms the account before any other tool. For an account with no project yet it gives the first step.

Input Schema

Name	Required	Description	Default
No arguments

Output Schema

Name	Required	Description
`plan`	Yes
`label`	Yes
`answer`	Yes	This answer in words: what was done, what R3 measured, decided or refused, and what to do next. The same text as the result's text block. Read it: the fields beside it are the data, this is the guidance.
`editor`	Yes
`agentId`	Yes
`username`	Yes
`agentName`	Yes
`connection`	Yes
`environment`	Yes
`apiReachable`	Yes
`capabilities`	Yes
`projectsOnFirstPage`	Yes
`retiredCapabilities`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 20, 2026

addedOutput schema / properties / plan / properties / granted

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "until": {
+          "type": [
+            "string",
+            "null"
+          ]
+        }
+      },
+      "required": [
+        "until"
+      ],
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ]
+}

changedOutput schema / properties / plan / required

Previous value: -[
-  "known",
-  "paywall",
-  "name",
-  "status",
-  "liveProjectLimit",
-  "liveProjects",
-  "freeLiveProjects",
-  "cancelAtPeriodEnd",
-  "currentPeriodEnd",
-  "planUrl",
-  "reason"
-]New value: +[
+  "known",
+  "paywall",
+  "name",
+  "status",
+  "liveProjectLimit",
+  "liveProjects",
+  "freeLiveProjects",
+  "cancelAtPeriodEnd",
+  "currentPeriodEnd",
+  "granted",
+  "planUrl",
+  "reason"
+]

Changed2 schema fields changedOct 19, 2026

addedOutput schema / properties / plan

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "cancelAtPeriodEnd": {
+      "type": "boolean"
+    },
+    "currentPeriodEnd": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "freeLiveProjects": {
+      "anyOf": [
+        {
+          "maximum": 9007199254740991,
+          "minimum": -9007199254740991,
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "known": {
+      "type": "boolean"
+    },
+    "liveProjectLimit": {
+      "anyOf": [
+        {
+          "maximum": 9007199254740991,
+          "minimum": -9007199254740991,
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "liveProjects": {
+      "anyOf": [
+        {
+          "maximum": 9007199254740991,
+          "minimum": -9007199254740991,
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
+    "name": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "paywall": {
+      "type": [
+        "boolean",
+        "null"
+      ]
+    },
+    "planUrl": {
+      "type": "string"
+    },
+    "reason": {
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "status": {
+      "type": [
+        "string",
+        "null"
+      ]
+    }
+  },
+  "required": [
+    "known",
+    "paywall",
+    "name",
+    "status",
+    "liveProjectLimit",
+    "liveProjects",
+    "freeLiveProjects",
+    "cancelAtPeriodEnd",
+    "currentPeriodEnd",
+    "planUrl",
+    "reason"
+  ],
+  "type": "object"
+}

changedOutput schema / required

Previous value: -[
-  "username",
-  "agentId",
-  "label",
-  "agentName",
-  "connection",
-  "capabilities",
-  "retiredCapabilities",
-  "environment",
-  "apiReachable",
-  "projectsOnFirstPage",
-  "editor",
-  "answer"
-]New value: +[
+  "username",
+  "agentId",
+  "label",
+  "agentName",
+  "connection",
+  "capabilities",
+  "retiredCapabilities",
+  "environment",
+  "apiReachable",
+  "projectsOnFirstPage",
+  "editor",
+  "plan",
+  "answer"
+]

Changed1 schema field changedOct 19, 2026

changedOutput schema / properties / editor / properties / tab / anyOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "lastActiveAgoMs": {
-        "type": "number"
-      },
-      "lastActiveAt": {
-        "type": "string"
-      },
-      "openProjects": {
-        "anyOf": [
-          {
-            "items": {
-              "additionalProperties": false,
-              "properties": {
-                "id": {
-                  "type": "string"
-                },
-                "name": {
-                  "type": [
-                    "string",
-                    "null"
-                  ]
-                }
-              },
-              "required": [
-                "id",
-                "name"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "openedAt": {
-        "type": [
-          "string",
-          "null"
-        ]
-      }
-    },
-    "required": [
-      "openedAt",
-      "lastActiveAt",
-      "lastActiveAgoMs",
-      "openProjects"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "frames": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "advancing": {
+                "type": "boolean"
+              },
+              "frameSeen": {
+                "type": "boolean"
+              },
+              "sceneShown": {
+                "type": "boolean"
+              },
+              "visible": {
+                "type": "boolean"
+              }
+            },
+            "required": [
+              "advancing",
+              "visible",
+              "sceneShown",
+              "frameSeen"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "lastActiveAgoMs": {
+        "type": "number"
+      },
+      "lastActiveAt": {
+        "type": "string"
+      },
+      "openProjects": {
+        "anyOf": [
+          {
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "id": {
+                  "type": "string"
+                },
+                "name": {
+                  "type": [
+                    "string",
+                    "null"
+                  ]
+                }
+              },
+              "required": [
+                "id",
+                "name"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "openedAt": {
+        "type": [
+          "string",
+          "null"
+        ]
+      }
+    },
+    "required": [
+      "openedAt",
+      "lastActiveAt",
+      "lastActiveAgoMs",
+      "openProjects"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Changed3 schema fields changedOct 15, 2026

addedOutput schema / properties / agentName
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / connection

Added value: +{
+  "enum": [
+    "key",
+    "terminal",
+    "app"
+  ],
+  "type": "string"
+}

changedOutput schema / required

Previous value: -[
-  "username",
-  "agentId",
-  "label",
-  "capabilities",
-  "retiredCapabilities",
-  "environment",
-  "apiReachable",
-  "projectsOnFirstPage",
-  "editor",
-  "answer"
-]New value: +[
+  "username",
+  "agentId",
+  "label",
+  "agentName",
+  "connection",
+  "capabilities",
+  "retiredCapabilities",
+  "environment",
+  "apiReachable",
+  "projectsOnFirstPage",
+  "editor",
+  "answer"
+]

Changed2 schema fields changedOct 15, 2026

addedOutput schema / properties / answer

Added value: +{
+  "description": "This answer in words: what was done, what R3 measured, decided or refused, and what to do next. The same text as the result's text block. Read it: the fields beside it are the data, this is the guidance.",
+  "type": "string"
+}

changedOutput schema / required

Previous value: -[
-  "username",
-  "agentId",
-  "label",
-  "capabilities",
-  "retiredCapabilities",
-  "environment",
-  "apiReachable",
-  "projectsOnFirstPage",
-  "editor"
-]New value: +[
+  "username",
+  "agentId",
+  "label",
+  "capabilities",
+  "retiredCapabilities",
+  "environment",
+  "apiReachable",
+  "projectsOnFirstPage",
+  "editor",
+  "answer"
+]

First observedOct 15, 2026

TDQS

A4.6/5.0

Behavior4/5

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

Annotations already declare readOnlyHint and openWorldHint, so safety is covered. The description adds real behavioral context beyond that: it verifies the credential 'end to end', names the capabilities the credential carries, checks whether the R3 platform is reachable, and branches behavior for an empty account. It stops short of describing output shape, but an output schema exists to cover that.

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

Conciseness4/5

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

Front-loaded with the primary payload (the account you act for) and then the enumerated extras. It is a fairly long single sentence followed by two short context sentences, but each clause corresponds to a distinct piece of returned information, so little is wasted.

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 documenting return values and annotations covering the read-only/open-world profile, the description fills the remaining gap: what the call confirms, its sequencing role, and the empty-account case. Nothing an agent needs to invoke it correctly is missing.

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

Parameters4/5

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

The tool takes zero parameters, so the baseline is 4; there is no parameter meaning for the description to add or omit.

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?

States a specific verb (Report) plus the exact resources it returns: the acting account, connection type, permissions, plan name/live-project allowance, and platform reachability. No sibling tool does anything comparable, so it is trivially distinguishable from the rest of the r3_* family.

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

Usage Guidelines5/5

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

Explicitly positions itself as the first call: 'the call that confirms the account before any other tool,' and adds a special case ('for an account with no project yet it gives the first step'). This is direct when-to-use guidance rather than inference.

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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