OMP Tandem

Overview Schema Source Related Servers Discussions Admin

tandem_continue

Starts a new goal after a completed turn by accepting one prompt or turn contract; prior history, policy, mode, and working directory persist while old goals and acceptance do not.

Instructions

Start a NEW current goal after completion; supply exactly one of prompt or turn contract.

History/base policy/mode/cwd persist, but old goals/acceptance do not. The product snapshot stays pinned unless explicitly changed to another revision of the same project. Question timeout is inherited unless explicitly set here. For waiting_input use tandem_reply. continuation=fresh requires an explicit handoff and starts a new context without replaying native history or transferring claims/grants. The source remains intact. Use preflight=true to inspect the same admission without a model or worker.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "conversation_id": "<conversation_id>"
    },
    "name": "tandem_continue"
  }
}

Input Schema

Name	Required	Default
`prompt`	No
`handoff`	No
`contract`	No
`execution`	No
`preflight`	No
`review_id`	No
`continuation`	No	resume
`review_stage`	No
`conversation_id`	Yes
`timeout_seconds`	No
`project_context_id`	No
`question_timeout_seconds`	No

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedv3.14.0Oct 29, 2026

changedInput schema / properties / execution / anyOf

Previous value: -[
-  {
-    "properties": {
-      "focus": {
-        "anyOf": [
-          {
-            "properties": {
-              "allow_external": {
-                "default": false,
-                "type": "boolean"
-              },
-              "goal": {
-                "maxLength": 4000,
-                "pattern": "\\S",
-                "type": "string"
-              },
-              "surfaces": {
-                "items": {
-                  "enum": [
-                    "context",
-                    "tools",
-                    "outputs"
-                  ],
-                  "type": "string"
-                },
-                "type": "array"
-              }
-            },
-            "required": [
-              "goal"
-            ],
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null,
-        "description": "Explicit goal and export consent for optional context, tool presentation and focused readers; never inherited."
-      },
-      "model": {
-        "anyOf": [
-          {
-            "minLength": 1,
-            "pattern": "\\S",
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "profile": {
-        "default": "balanced",
-        "description": "Profile defaults: quick: Defaults to low thinking with a 600-second deadline. balanced: Defaults to high thinking with a 1800-second deadline. deep: Defaults to high thinking with a 3600-second deadline. Uses the same thinking level as balanced with a longer deadline, not higher reasoning. These are default choices; overrides, effective settings, and actual settings are reported separately.",
-        "enum": [
-          "quick",
-          "balanced",
-          "deep"
-        ],
-        "type": "string"
-      },
-      "routing": {
-        "anyOf": [
-          {
-            "properties": {
-              "allow_external_summary": {
-                "default": false,
-                "type": "boolean"
-              },
-              "input_modalities": {
-                "items": {
-                  "enum": [
-                    "text",
-                    "image"
-                  ],
-                  "type": "string"
-                },
-                "maxItems": 2,
-                "minItems": 1,
-                "type": "array"
-              },
-              "input_token_estimate": {
-                "maximum": 2000000,
-                "minimum": 1,
-                "type": "integer"
-              },
-              "max_candidate_cost_usd": {
-                "anyOf": [
-                  {
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  {
-                    "type": "null"
-                  }
-                ],
-                "default": null
-              },
-              "output_token_estimate": {
-                "maximum": 2000000,
-                "minimum": 1,
-                "type": "integer"
-              },
-              "summary": {
-                "maxLength": 4000,
-                "pattern": "\\S",
-                "type": "string"
-              }
-            },
-            "required": [
-              "summary",
-              "input_token_estimate",
-              "output_token_estimate"
-            ],
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null,
-        "description": "Explicit export-approved input for optional shadow routing; never inherited or applied to execution."
-      },
-      "thinking": {
-        "anyOf": [
-          {
-            "enum": [
-              "off",
-              "minimal",
-              "low",
-              "medium",
-              "high",
-              "xhigh",
-              "max"
-            ],
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "timeout_seconds": {
-        "anyOf": [
-          {
-            "maximum": 7200,
-            "minimum": 1,
-            "type": "integer"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "properties": {
+      "focus": {
+        "anyOf": [
+          {
+            "properties": {
+              "allow_external": {
+                "default": false,
+                "type": "boolean"
+              },
+              "goal": {
+                "maxLength": 4000,
+                "pattern": "\\S",
+                "type": "string"
+              },
+              "surfaces": {
+                "items": {
+                  "enum": [
+                    "context",
+                    "tools",
+                    "outputs"
+                  ],
+                  "type": "string"
+                },
+                "type": "array"
+              }
+            },
+            "required": [
+              "goal"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null,
+        "description": "Explicit goal and export consent for optional context, tool presentation and focused readers; never inherited."
+      },
+      "model": {
+        "anyOf": [
+          {
+            "minLength": 1,
+            "pattern": "\\S",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      },
+      "profile": {
+        "default": "balanced",
+        "description": "Profile defaults: quick: Defaults to low thinking with a 600-second deadline. balanced: Defaults to high thinking with a 1800-second deadline. deep: Defaults to high thinking with a 3600-second deadline. Uses the same thinking level as balanced with a longer deadline, not higher reasoning. These are default choices; overrides, effective settings, and actual settings are reported separately.",
+        "enum": [
+          "quick",
+          "balanced",
+          "deep"
+        ],
+        "type": "string"
+      },
+      "purpose": {
+        "default": "work",
+        "description": "Turn-local lane: coordination is reserved for think-only consultation, never work or extra permissions. Not inherited.",
+        "enum": [
+          "work",
+          "coordination"
+        ],
+        "type": "string"
+      },
+      "routing": {
+        "anyOf": [
+          {
+            "properties": {
+              "allow_external_summary": {
+                "default": false,
+                "type": "boolean"
+              },
+              "input_modalities": {
+                "items": {
+                  "enum": [
+                    "text",
+                    "image"
+                  ],
+                  "type": "string"
+                },
+                "maxItems": 2,
+                "minItems": 1,
+                "type": "array"
+              },
+              "input_token_estimate": {
+                "maximum": 2000000,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "max_candidate_cost_usd": {
+                "anyOf": [
+                  {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "default": null
+              },
+              "output_token_estimate": {
+                "maximum": 2000000,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "summary": {
+                "maxLength": 4000,
+                "pattern": "\\S",
+                "type": "string"
+              }
+            },
+            "required": [
+              "summary",
+              "input_token_estimate",
+              "output_token_estimate"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null,
+        "description": "Explicit export-approved input for optional shadow routing; never inherited or applied to execution."
+      },
+      "thinking": {
+        "anyOf": [
+          {
+            "enum": [
+              "off",
+              "minimal",
+              "low",
+              "medium",
+              "high",
+              "xhigh",
+              "max"
+            ],
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      },
+      "timeout_seconds": {
+        "anyOf": [
+          {
+            "maximum": 7200,
+            "minimum": 1,
+            "type": "integer"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Changed1 schema field changedv3.12.0Oct 22, 2026

changedInput schema / properties / execution / anyOf

Previous value: -[
-  {
-    "properties": {
-      "model": {
-        "anyOf": [
-          {
-            "minLength": 1,
-            "pattern": "\\S",
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "profile": {
-        "default": "balanced",
-        "description": "Profile defaults: quick: Defaults to low thinking with a 600-second deadline. balanced: Defaults to high thinking with a 1800-second deadline. deep: Defaults to high thinking with a 3600-second deadline. Uses the same thinking level as balanced with a longer deadline, not higher reasoning. These are default choices; overrides, effective settings, and actual settings are reported separately.",
-        "enum": [
-          "quick",
-          "balanced",
-          "deep"
-        ],
-        "type": "string"
-      },
-      "thinking": {
-        "anyOf": [
-          {
-            "enum": [
-              "off",
-              "minimal",
-              "low",
-              "medium",
-              "high",
-              "xhigh",
-              "max"
-            ],
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "timeout_seconds": {
-        "anyOf": [
-          {
-            "maximum": 7200,
-            "minimum": 1,
-            "type": "integer"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "properties": {
+      "focus": {
+        "anyOf": [
+          {
+            "properties": {
+              "allow_external": {
+                "default": false,
+                "type": "boolean"
+              },
+              "goal": {
+                "maxLength": 4000,
+                "pattern": "\\S",
+                "type": "string"
+              },
+              "surfaces": {
+                "items": {
+                  "enum": [
+                    "context",
+                    "tools",
+                    "outputs"
+                  ],
+                  "type": "string"
+                },
+                "type": "array"
+              }
+            },
+            "required": [
+              "goal"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null,
+        "description": "Explicit goal and export consent for optional context, tool presentation and focused readers; never inherited."
+      },
+      "model": {
+        "anyOf": [
+          {
+            "minLength": 1,
+            "pattern": "\\S",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      },
+      "profile": {
+        "default": "balanced",
+        "description": "Profile defaults: quick: Defaults to low thinking with a 600-second deadline. balanced: Defaults to high thinking with a 1800-second deadline. deep: Defaults to high thinking with a 3600-second deadline. Uses the same thinking level as balanced with a longer deadline, not higher reasoning. These are default choices; overrides, effective settings, and actual settings are reported separately.",
+        "enum": [
+          "quick",
+          "balanced",
+          "deep"
+        ],
+        "type": "string"
+      },
+      "routing": {
+        "anyOf": [
+          {
+            "properties": {
+              "allow_external_summary": {
+                "default": false,
+                "type": "boolean"
+              },
+              "input_modalities": {
+                "items": {
+                  "enum": [
+                    "text",
+                    "image"
+                  ],
+                  "type": "string"
+                },
+                "maxItems": 2,
+                "minItems": 1,
+                "type": "array"
+              },
+              "input_token_estimate": {
+                "maximum": 2000000,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "max_candidate_cost_usd": {
+                "anyOf": [
+                  {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "default": null
+              },
+              "output_token_estimate": {
+                "maximum": 2000000,
+                "minimum": 1,
+                "type": "integer"
+              },
+              "summary": {
+                "maxLength": 4000,
+                "pattern": "\\S",
+                "type": "string"
+              }
+            },
+            "required": [
+              "summary",
+              "input_token_estimate",
+              "output_token_estimate"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null,
+        "description": "Explicit export-approved input for optional shadow routing; never inherited or applied to execution."
+      },
+      "thinking": {
+        "anyOf": [
+          {
+            "enum": [
+              "off",
+              "minimal",
+              "low",
+              "medium",
+              "high",
+              "xhigh",
+              "max"
+            ],
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      },
+      "timeout_seconds": {
+        "anyOf": [
+          {
+            "maximum": 7200,
+            "minimum": 1,
+            "type": "integer"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Changed1 schema field changedv3.10.0Sep 17, 2026

changedInput schema / properties / contract / anyOf

Previous value: -[
-  {
-    "description": "A new turn's goal and criteria, without permission or ownership changes.",
-    "properties": {
-      "acceptance": {
-        "items": {
-          "maxLength": 2000,
-          "pattern": "\\S",
-          "type": "string"
-        },
-        "maxItems": 50,
-        "type": "array"
-      },
-      "artifact_ids": {
-        "items": {
-          "type": "string"
-        },
-        "maxItems": 32,
-        "type": "array"
-      },
-      "constraints": {
-        "items": {
-          "maxLength": 2000,
-          "pattern": "\\S",
-          "type": "string"
-        },
-        "maxItems": 50,
-        "type": "array"
-      },
-      "context": {
-        "default": "",
-        "maxLength": 60000,
-        "type": "string"
-      },
-      "context_options": {
-        "description": "Presentation of pinned product data, never a reduction of required policy.",
-        "properties": {
-          "advisory_rule_ids": {
-            "items": {
-              "maxLength": 100,
-              "pattern": "\\S",
-              "type": "string"
-            },
-            "maxItems": 50,
-            "type": "array"
-          },
-          "decision_ids": {
-            "items": {
-              "maxLength": 100,
-              "pattern": "\\S",
-              "type": "string"
-            },
-            "maxItems": 100,
-            "type": "array"
-          },
-          "delivery": {
-            "default": "capsule",
-            "enum": [
-              "capsule",
-              "full"
-            ],
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "goal": {
-        "maxLength": 8000,
-        "pattern": "\\S",
-        "type": "string"
-      },
-      "requirements": {
-        "description": "Declared execution needs; a live-path claim remains attributed evidence.",
-        "properties": {
-          "boundary_paths": {
-            "items": {
-              "type": "string"
-            },
-            "maxItems": 100,
-            "type": "array"
-          },
-          "entry_paths": {
-            "items": {
-              "type": "string"
-            },
-            "maxItems": 100,
-            "type": "array"
-          },
-          "live_path_evidence": {
-            "items": {
-              "type": "string"
-            },
-            "maxItems": 32,
-            "type": "array"
-          },
-          "requires_shell": {
-            "default": false,
-            "type": "boolean"
-          },
-          "requires_write": {
-            "default": false,
-            "type": "boolean"
-          }
-        },
-        "type": "object"
-      },
-      "verification": {
-        "anyOf": [
-          {
-            "description": "Explicit check ladder; later phases include earlier required checks.",
-            "properties": {
-              "checks": {
-                "items": {
-                  "properties": {
-                    "command": {
-                      "anyOf": [
-                        {
-                          "maxLength": 2000,
-                          "type": "string"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ],
-                      "default": null
-                    },
-                    "criterion": {
-                      "maxLength": 2000,
-                      "pattern": "\\S",
-                      "type": "string"
-                    },
-                    "estimated_seconds": {
-                      "anyOf": [
-                        {
-                          "maximum": 7200,
-                          "minimum": 1,
-                          "type": "integer"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ],
-                      "default": null
-                    },
-                    "id": {
-                      "maxLength": 100,
-                      "pattern": "\\S",
-                      "type": "string"
-                    },
-                    "phase": {
-                      "default": "targeted",
-                      "enum": [
-                        "targeted",
-                        "candidate",
-                        "integration"
-                      ],
-                      "type": "string"
-                    },
-                    "requires_shell": {
-                      "default": false,
-                      "type": "boolean"
-                    },
-                    "scope": {
-                      "anyOf": [
-                        {
-                          "description": "Which bytes a run observed. Equal digests of the same kind are the same bytes.",
-                          "properties": {
-                            "boundaries": {
-                              "description": "What the run did not exercise (external services, other platforms, unselected files).",
-                              "items": {
-                                "maxLength": 2000,
-                                "pattern": "\\S",
-                                "type": "string"
-                              },
-                              "maxItems": 20,
-                              "type": "array"
-                            },
-                            "digest": {
-                              "pattern": "^[0-9a-f]{7,128}$",
-                              "type": "string"
-                            },
-                            "kind": {
-                              "enum": [
-                                "tree",
-                                "commit",
-                                "archive",
-                                "content"
-                              ],
-                              "type": "string"
-                            }
-                          },
-                          "required": [
-                            "kind",
-                            "digest"
-                          ],
-                          "type": "object"
-                        },
-                        {
-                          "type": "null"
-                        }
-                      ],
-                      "default": null,
-                      "description": "Explicit current input identity. History from other bytes remains recorded but is not a current result; omitted scope keeps ambiguous failures unresolved."
-                    }
-                  },
-                  "required": [
-                    "id",
-                    "criterion"
-                  ],
-                  "type": "object"
-                },
-                "maxItems": 50,
-                "type": "array"
-              },
-              "preparation_seconds": {
-                "default": 0,
-                "maximum": 7200,
-                "minimum": 0,
-                "type": "integer"
-              },
-              "stage": {
-                "default": "targeted",
-                "enum": [
-                  "targeted",
-                  "candidate",
-                  "integration"
-                ],
-                "type": "string"
-              }
-            },
-            "type": "object"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      }
-    },
-    "required": [
-      "goal"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "description": "A new turn's goal and criteria, without permission or ownership changes.",
+    "properties": {
+      "acceptance": {
+        "items": {
+          "maxLength": 2000,
+          "pattern": "\\S",
+          "type": "string"
+        },
+        "maxItems": 50,
+        "type": "array"
+      },
+      "acceptance_set": {
+        "anyOf": [
+          {
+            "description": "The declared denominator. Its revision is its content, not a version number.",
+            "properties": {
+              "items": {
+                "items": {
+                  "properties": {
+                    "id": {
+                      "pattern": "^[A-Za-z0-9][A-Za-z0-9._\\-]{0,99}$",
+                      "type": "string"
+                    },
+                    "obligations": {
+                      "description": "Declared clauses. Naming none keeps the criterion one undecomposed unit; naming some means a mapping of the parent covers none of them.",
+                      "items": {
+                        "description": "One clause of a criterion, with the exact environment it is owed in.",
+                        "properties": {
+                          "environment": {
+                            "patternProperties": {
+                              "\\S": {
+                                "maxLength": 200,
+                                "type": "string"
+                              }
+                            },
+                            "propertyNames": {
+                              "maxLength": 60
+                            },
+                            "type": "object"
+                          },
+                          "id": {
+                            "pattern": "^[A-Za-z0-9][A-Za-z0-9._\\-]{0,99}$",
+                            "type": "string"
+                          },
+                          "text": {
+                            "maxLength": 16000,
+                            "pattern": "\\S",
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "id",
+                          "text"
+                        ],
+                        "type": "object"
+                      },
+                      "maxItems": 100,
+                      "type": "array"
+                    },
+                    "text": {
+                      "maxLength": 16000,
+                      "pattern": "\\S",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "id",
+                    "text"
+                  ],
+                  "type": "object"
+                },
+                "maxItems": 100,
+                "type": "array"
+              },
+              "revision": {
+                "pattern": "^[0-9a-f]{64}$",
+                "type": "string"
+              },
+              "schema_version": {
+                "const": 1,
+                "default": 1,
+                "type": "integer"
+              },
+              "set_id": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "set_id",
+              "revision"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null,
+        "description": "Optional structured form of the same acceptance list: its texts must repeat acceptance exactly, so there is never a second source of truth."
+      },
+      "artifact_ids": {
+        "items": {
+          "type": "string"
+        },
+        "maxItems": 32,
+        "type": "array"
+      },
+      "constraints": {
+        "items": {
+          "maxLength": 2000,
+          "pattern": "\\S",
+          "type": "string"
+        },
+        "maxItems": 50,
+        "type": "array"
+      },
+      "context": {
+        "default": "",
+        "maxLength": 60000,
+        "type": "string"
+      },
+      "context_options": {
+        "description": "Presentation of pinned product data, never a reduction of required policy.",
+        "properties": {
+          "advisory_rule_ids": {
+            "items": {
+              "maxLength": 100,
+              "pattern": "\\S",
+              "type": "string"
+            },
+            "maxItems": 50,
+            "type": "array"
+          },
+          "decision_ids": {
+            "items": {
+              "maxLength": 100,
+              "pattern": "\\S",
+              "type": "string"
+            },
+            "maxItems": 100,
+            "type": "array"
+          },
+          "delivery": {
+            "default": "capsule",
+            "enum": [
+              "capsule",
+              "full"
+            ],
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "goal": {
+        "maxLength": 8000,
+        "pattern": "\\S",
+        "type": "string"
+      },
+      "requirements": {
+        "description": "Declared execution needs; a live-path claim remains attributed evidence.",
+        "properties": {
+          "boundary_paths": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 100,
+            "type": "array"
+          },
+          "entry_paths": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 100,
+            "type": "array"
+          },
+          "live_path_evidence": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 32,
+            "type": "array"
+          },
+          "requires_shell": {
+            "default": false,
+            "type": "boolean"
+          },
+          "requires_write": {
+            "default": false,
+            "type": "boolean"
+          }
+        },
+        "type": "object"
+      },
+      "verification": {
+        "anyOf": [
+          {
+            "description": "Explicit check ladder; later phases include earlier required checks.",
+            "properties": {
+              "acceptance_coverage": {
+                "default": "report_only",
+                "description": "report_only surfaces gaps and refuses nothing. require_current_evidence additionally refuses a success report while a declared evidence unit lacks applicable current passing evidence.",
+                "enum": [
+                  "report_only",
+                  "require_current_evidence"
+                ],
+                "type": "string"
+              },
+              "checks": {
+                "items": {
+                  "properties": {
+                    "acceptance_refs": {
+                      "description": "Which declared criteria or obligations this check is intended to exercise. An assertion of intent, never of execution or sufficiency.",
+                      "items": {
+                        "description": "Points at one criterion or one of its obligations, at an exact revision.",
+                        "properties": {
+                          "criterion_id": {
+                            "pattern": "^[A-Za-z0-9][A-Za-z0-9._\\-]{0,99}$",
+                            "type": "string"
+                          },
+                          "obligation_id": {
+                            "anyOf": [
+                              {
+                                "pattern": "^[A-Za-z0-9][A-Za-z0-9._\\-]{0,99}$",
+                                "type": "string"
+                              },
+                              {
+                                "type": "null"
+                              }
+                            ],
+                            "default": null
+                          },
+                          "revision": {
+                            "pattern": "^[0-9a-f]{64}$",
+                            "type": "string"
+                          },
+                          "set_id": {
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "set_id",
+                          "revision",
+                          "criterion_id"
+                        ],
+                        "type": "object"
+                      },
+                      "maxItems": 200,
+                      "type": "array"
+                    },
+                    "command": {
+                      "anyOf": [
+                        {
+                          "maxLength": 2000,
+                          "type": "string"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ],
+                      "default": null
+                    },
+                    "criterion": {
+                      "maxLength": 2000,
+                      "pattern": "\\S",
+                      "type": "string"
+                    },
+                    "estimated_seconds": {
+                      "anyOf": [
+                        {
+                          "maximum": 7200,
+                          "minimum": 1,
+                          "type": "integer"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ],
+                      "default": null
+                    },
+                    "id": {
+                      "maxLength": 100,
+                      "pattern": "\\S",
+                      "type": "string"
+                    },
+                    "phase": {
+                      "default": "targeted",
+                      "enum": [
+                        "targeted",
+                        "candidate",
+                        "integration"
+                      ],
+                      "type": "string"
+                    },
+                    "requires_shell": {
+                      "default": false,
+                      "type": "boolean"
+                    },
+                    "scope": {
+                      "anyOf": [
+                        {
+                          "description": "Which bytes a run observed. Equal digests of the same kind are the same bytes.",
+                          "properties": {
+                            "boundaries": {
+                              "description": "What the run did not exercise (external services, other platforms, unselected files).",
+                              "items": {
+                                "maxLength": 2000,
+                                "pattern": "\\S",
+                                "type": "string"
+                              },
+                              "maxItems": 20,
+                              "type": "array"
+                            },
+                            "digest": {
+                              "pattern": "^[0-9a-f]{7,128}$",
+                              "type": "string"
+                            },
+                            "kind": {
+                              "enum": [
+                                "tree",
+                                "commit",
+                                "archive",
+                                "content"
+                              ],
+                              "type": "string"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "digest"
+                          ],
+                          "type": "object"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ],
+                      "default": null,
+                      "description": "Explicit current input identity. History from other bytes remains recorded but is not a current result; omitted scope keeps ambiguous failures unresolved."
+                    }
+                  },
+                  "required": [
+                    "id",
+                    "criterion"
+                  ],
+                  "type": "object"
+                },
+                "maxItems": 50,
+                "type": "array"
+              },
+              "coverage_scope": {
+                "anyOf": [
+                  {
+                    "description": "Which bytes a run observed. Equal digests of the same kind are the same bytes.",
+                    "properties": {
+                      "boundaries": {
+                        "description": "What the run did not exercise (external services, other platforms, unselected files).",
+                        "items": {
+                          "maxLength": 2000,
+                          "pattern": "\\S",
+                          "type": "string"
+                        },
+                        "maxItems": 20,
+                        "type": "array"
+                      },
+                      "digest": {
+                        "pattern": "^[0-9a-f]{7,128}$",
+                        "type": "string"
+                      },
+                      "kind": {
+                        "enum": [
+                          "tree",
+                          "commit",
+                          "archive",
+                          "content"
+                        ],
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "kind",
+                      "digest"
+                    ],
+                    "type": "object"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "default": null,
+                "description": "The output bytes this coverage assessment is about. A declaration, not an observation of the filesystem."
+              },
+              "preparation_seconds": {
+                "default": 0,
+                "maximum": 7200,
+                "minimum": 0,
+                "type": "integer"
+              },
+              "stage": {
+                "default": "targeted",
+                "enum": [
+                  "targeted",
+                  "candidate",
+                  "integration"
+                ],
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      }
+    },
+    "required": [
+      "goal"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Changed4 schema fields changedv3.8.0Sep 16, 2026

addedInput schema / properties / continuation

Added value: +{
+  "default": "resume",
+  "enum": [
+    "resume",
+    "fresh"
+  ],
+  "type": "string"
+}

changedInput schema / properties / contract / anyOf

Previous value: -[
-  {
-    "description": "A new turn's goal and criteria, without permission or ownership changes.",
-    "properties": {
-      "acceptance": {
-        "items": {
-          "maxLength": 2000,
-          "pattern": "\\S",
-          "type": "string"
-        },
-        "maxItems": 50,
-        "type": "array"
-      },
-      "artifact_ids": {
-        "items": {
-          "type": "string"
-        },
-        "maxItems": 32,
-        "type": "array"
-      },
-      "constraints": {
-        "items": {
-          "maxLength": 2000,
-          "pattern": "\\S",
-          "type": "string"
-        },
-        "maxItems": 50,
-        "type": "array"
-      },
-      "context": {
-        "default": "",
-        "maxLength": 60000,
-        "type": "string"
-      },
-      "goal": {
-        "maxLength": 8000,
-        "pattern": "\\S",
-        "type": "string"
-      }
-    },
-    "required": [
-      "goal"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "description": "A new turn's goal and criteria, without permission or ownership changes.",
+    "properties": {
+      "acceptance": {
+        "items": {
+          "maxLength": 2000,
+          "pattern": "\\S",
+          "type": "string"
+        },
+        "maxItems": 50,
+        "type": "array"
+      },
+      "artifact_ids": {
+        "items": {
+          "type": "string"
+        },
+        "maxItems": 32,
+        "type": "array"
+      },
+      "constraints": {
+        "items": {
+          "maxLength": 2000,
+          "pattern": "\\S",
+          "type": "string"
+        },
+        "maxItems": 50,
+        "type": "array"
+      },
+      "context": {
+        "default": "",
+        "maxLength": 60000,
+        "type": "string"
+      },
+      "context_options": {
+        "description": "Presentation of pinned product data, never a reduction of required policy.",
+        "properties": {
+          "advisory_rule_ids": {
+            "items": {
+              "maxLength": 100,
+              "pattern": "\\S",
+              "type": "string"
+            },
+            "maxItems": 50,
+            "type": "array"
+          },
+          "decision_ids": {
+            "items": {
+              "maxLength": 100,
+              "pattern": "\\S",
+              "type": "string"
+            },
+            "maxItems": 100,
+            "type": "array"
+          },
+          "delivery": {
+            "default": "capsule",
+            "enum": [
+              "capsule",
+              "full"
+            ],
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "goal": {
+        "maxLength": 8000,
+        "pattern": "\\S",
+        "type": "string"
+      },
+      "requirements": {
+        "description": "Declared execution needs; a live-path claim remains attributed evidence.",
+        "properties": {
+          "boundary_paths": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 100,
+            "type": "array"
+          },
+          "entry_paths": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 100,
+            "type": "array"
+          },
+          "live_path_evidence": {
+            "items": {
+              "type": "string"
+            },
+            "maxItems": 32,
+            "type": "array"
+          },
+          "requires_shell": {
+            "default": false,
+            "type": "boolean"
+          },
+          "requires_write": {
+            "default": false,
+            "type": "boolean"
+          }
+        },
+        "type": "object"
+      },
+      "verification": {
+        "anyOf": [
+          {
+            "description": "Explicit check ladder; later phases include earlier required checks.",
+            "properties": {
+              "checks": {
+                "items": {
+                  "properties": {
+                    "command": {
+                      "anyOf": [
+                        {
+                          "maxLength": 2000,
+                          "type": "string"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ],
+                      "default": null
+                    },
+                    "criterion": {
+                      "maxLength": 2000,
+                      "pattern": "\\S",
+                      "type": "string"
+                    },
+                    "estimated_seconds": {
+                      "anyOf": [
+                        {
+                          "maximum": 7200,
+                          "minimum": 1,
+                          "type": "integer"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ],
+                      "default": null
+                    },
+                    "id": {
+                      "maxLength": 100,
+                      "pattern": "\\S",
+                      "type": "string"
+                    },
+                    "phase": {
+                      "default": "targeted",
+                      "enum": [
+                        "targeted",
+                        "candidate",
+                        "integration"
+                      ],
+                      "type": "string"
+                    },
+                    "requires_shell": {
+                      "default": false,
+                      "type": "boolean"
+                    },
+                    "scope": {
+                      "anyOf": [
+                        {
+                          "description": "Which bytes a run observed. Equal digests of the same kind are the same bytes.",
+                          "properties": {
+                            "boundaries": {
+                              "description": "What the run did not exercise (external services, other platforms, unselected files).",
+                              "items": {
+                                "maxLength": 2000,
+                                "pattern": "\\S",
+                                "type": "string"
+                              },
+                              "maxItems": 20,
+                              "type": "array"
+                            },
+                            "digest": {
+                              "pattern": "^[0-9a-f]{7,128}$",
+                              "type": "string"
+                            },
+                            "kind": {
+                              "enum": [
+                                "tree",
+                                "commit",
+                                "archive",
+                                "content"
+                              ],
+                              "type": "string"
+                            }
+                          },
+                          "required": [
+                            "kind",
+                            "digest"
+                          ],
+                          "type": "object"
+                        },
+                        {
+                          "type": "null"
+                        }
+                      ],
+                      "default": null,
+                      "description": "Explicit current input identity. History from other bytes remains recorded but is not a current result; omitted scope keeps ambiguous failures unresolved."
+                    }
+                  },
+                  "required": [
+                    "id",
+                    "criterion"
+                  ],
+                  "type": "object"
+                },
+                "maxItems": 50,
+                "type": "array"
+              },
+              "preparation_seconds": {
+                "default": 0,
+                "maximum": 7200,
+                "minimum": 0,
+                "type": "integer"
+              },
+              "stage": {
+                "default": "targeted",
+                "enum": [
+                  "targeted",
+                  "candidate",
+                  "integration"
+                ],
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      }
+    },
+    "required": [
+      "goal"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

addedInput schema / properties / handoff

Added value: +{
+  "anyOf": [
+    {
+      "description": "Explicit data for a fresh conversation; no execution capability is transferred.",
+      "properties": {
+        "evidence_artifact_ids": {
+          "items": {
+            "type": "string"
+          },
+          "maxItems": 32,
+          "type": "array"
+        },
+        "invalidated_assumptions": {
+          "items": {
+            "maxLength": 2000,
+            "pattern": "\\S",
+            "type": "string"
+          },
+          "maxItems": 20,
+          "type": "array"
+        },
+        "reason": {
+          "maxLength": 2000,
+          "pattern": "\\S",
+          "type": "string"
+        },
+        "remaining_goals": {
+          "items": {
+            "maxLength": 2000,
+            "pattern": "\\S",
+            "type": "string"
+          },
+          "maxItems": 20,
+          "type": "array"
+        },
+        "summary": {
+          "maxLength": 8000,
+          "pattern": "\\S",
+          "type": "string"
+        }
+      },
+      "required": [
+        "reason",
+        "summary"
+      ],
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedInput schema / properties / preflight

Added value: +{
+  "default": false,
+  "type": "boolean"
+}

Changed1 schema field changedv3.3.0Sep 10, 2026

changedInput schema / properties / execution / anyOf

Previous value: -[
-  {
-    "properties": {
-      "model": {
-        "anyOf": [
-          {
-            "minLength": 1,
-            "pattern": "\\S",
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "profile": {
-        "default": "balanced",
-        "enum": [
-          "quick",
-          "balanced",
-          "deep"
-        ],
-        "type": "string"
-      },
-      "thinking": {
-        "anyOf": [
-          {
-            "enum": [
-              "off",
-              "minimal",
-              "low",
-              "medium",
-              "high",
-              "xhigh",
-              "max"
-            ],
-            "type": "string"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      },
-      "timeout_seconds": {
-        "anyOf": [
-          {
-            "maximum": 7200,
-            "minimum": 1,
-            "type": "integer"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "default": null
-      }
-    },
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "properties": {
+      "model": {
+        "anyOf": [
+          {
+            "minLength": 1,
+            "pattern": "\\S",
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      },
+      "profile": {
+        "default": "balanced",
+        "description": "Profile defaults: quick: Defaults to low thinking with a 600-second deadline. balanced: Defaults to high thinking with a 1800-second deadline. deep: Defaults to high thinking with a 3600-second deadline. Uses the same thinking level as balanced with a longer deadline, not higher reasoning. These are default choices; overrides, effective settings, and actual settings are reported separately.",
+        "enum": [
+          "quick",
+          "balanced",
+          "deep"
+        ],
+        "type": "string"
+      },
+      "thinking": {
+        "anyOf": [
+          {
+            "enum": [
+              "off",
+              "minimal",
+              "low",
+              "medium",
+              "high",
+              "xhigh",
+              "max"
+            ],
+            "type": "string"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      },
+      "timeout_seconds": {
+        "anyOf": [
+          {
+            "maximum": 7200,
+            "minimum": 1,
+            "type": "integer"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Changed8 schema fields changedv3.1.0Sep 9, 2026

addedInput schema / properties / execution

Added value: +{
+  "anyOf": [
+    {
+      "properties": {
+        "model": {
+          "anyOf": [
+            {
+              "minLength": 1,
+              "pattern": "\\S",
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null
+        },
+        "profile": {
+          "default": "balanced",
+          "enum": [
+            "quick",
+            "balanced",
+            "deep"
+          ],
+          "type": "string"
+        },
+        "thinking": {
+          "anyOf": [
+            {
+              "enum": [
+                "off",
+                "minimal",
+                "low",
+                "medium",
+                "high",
+                "xhigh",
+                "max"
+              ],
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null
+        },
+        "timeout_seconds": {
+          "anyOf": [
+            {
+              "maximum": 7200,
+              "minimum": 1,
+              "type": "integer"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "default": null
+        }
+      },
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedInput schema / properties / review_id

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedInput schema / properties / review_stage

Added value: +{
+  "anyOf": [
+    {
+      "enum": [
+        "independent",
+        "comparison"
+      ],
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null
+}

addedInput schema / properties / timeout_seconds / anyOf

Added value: +[
+  {
+    "maximum": 7200,
+    "minimum": 1,
+    "type": "integer"
+  },
+  {
+    "type": "null"
+  }
+]

changedInput schema / properties / timeout_seconds / default
```
Previous value: -1800New value: +null
```
removedInput schema / properties / timeout_seconds / maximum
```
Removed value: -7200
```
removedInput schema / properties / timeout_seconds / minimum
```
Removed value: -1
```
removedInput schema / properties / timeout_seconds / type
```
Removed value: -"integer"
```

First observedv3.0.1Sep 9, 2026

TDQS

A3.6/5.0

Behavior3/5

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

With no annotations, the description carries the full burden, and it does disclose substantial behavior: what persists (history, base policy, mode, cwd), what is discarded (old goals and acceptance), pinned snapshot semantics, inherited question timeout, and that fresh starts a new context without replaying native history or transferring claims/grants while the source remains intact. It says nothing about permissions or auth needed to call it, side effects on the prior goal's state, or cost/latency of admitting a turn.

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 core action and the mutual-exclusion rule, then layered detail in descending priority; every sentence carries substantive policy information. It is dense and jargon-heavy (admission, live-path claim, turn contract) but not padded.

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

Completeness3/5

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

Output schema exists, so return values need not be described, and the goal/acceptance lifecycle is well covered. But for a 12-parameter admission tool with zero schema description coverage and no annotations, the definition leaves too many parameters and their precedence rules unexplained for an agent to fill the schema confidently.

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?

Schema description coverage is 0% at the top level, so the description must compensate, and it only partially does: it explains prompt and turn contract (including the 'exactly one of' rule that the schema does not express), handoff, continuation=fresh, preflight, and question-timeout inheritance. Twelve parameters remain, and execution, review_id, review_stage, timeout_seconds, project_context_id and conversation_id are never mentioned, nor is the interaction between top-level timeout_seconds and execution.timeout_seconds.

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

Purpose4/5

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

The first clause gives a specific verb and resource — 'Start a NEW current goal after completion' — and the emphasis on NEW signals this is not a resumption. It also implicitly separates itself from tandem_reply, but it never distinguishes itself from tandem_start or tandem_work, which an agent choosing among 28 siblings would need.

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 real routing conditions: use when a goal is complete, use tandem_reply for waiting_input, use preflight=true to dry-run admission without a model or worker, and fresh continuation requires an explicit handoff. What's missing is guidance on resume vs fresh in ordinary cases and when to pick tandem_start instead.

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

tandem_continue

Instructions

Tool call template

Input Schema

Output Schema

Schema Changelog

TDQS

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