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Contract Testing: Update Pacticipant Version

contract-testing_update_pacticipant_version

Idempotent

Update metadata for a specific pacticipant version and set the CI build URL that produced it, keeping contract testing version records accurate.

Instructions

Update metadata for a specific pacticipant version.

Toolset: Branches and Versions

Parameters:

pacticipantName (string) required: Name of the pacticipant
versionNumber (string) required: Version number to update
buildUrl (string): URL of the CI build that produced this version

Input Schema

Name	Required	Description
`buildUrl`	No	URL of the CI build that produced this version
`versionNumber`	Yes	Version number to update
`pacticipantName`	Yes	Name of the pacticipant

Output Schema

Name	Required	Description
`_links`	No
`number`	No
`buildUrl`	No	Setting the buildUrl in the version resource is deprecated as it is now set when publishing consumer and provider contracts using the /contracts/publish and /provider-contracts/provider/{provider_name}/publish endpoints.
`_embedded`	No
`createdAt`	No
`updatedAt`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedv0.43.0Nov 3, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$defs": {
+    "Contact": {
+      "additionalProperties": {},
+      "properties": {
+        "details": {
+          "additionalProperties": {},
+          "properties": {},
+          "type": "object"
+        },
+        "name": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "EmbeddedBranchVersion": {
+      "additionalProperties": {},
+      "properties": {
+        "_links": {
+          "additionalProperties": {},
+          "properties": {
+            "self": {
+              "$ref": "#/$defs/EmbeddedLink"
+            }
+          },
+          "type": "object"
+        },
+        "latest": {
+          "type": "boolean"
+        },
+        "name": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "EmbeddedDeployedVersion": {
+      "additionalProperties": {},
+      "properties": {
+        "_embedded": {
+          "additionalProperties": {},
+          "properties": {
+            "environment": {
+              "$ref": "#/$defs/Environment"
+            },
+            "pacticipant": {
+              "$ref": "#/$defs/EmbeddedNamed"
+            },
+            "version": {
+              "$ref": "#/$defs/EmbeddedVersion"
+            }
+          },
+          "type": "object"
+        },
+        "_links": {
+          "additionalProperties": {},
+          "properties": {
+            "self": {
+              "$ref": "#/$defs/EmbeddedLink"
+            }
+          },
+          "type": "object"
+        },
+        "applicationInstance": {
+          "type": "string"
+        },
+        "createdAt": {
+          "type": "string"
+        },
+        "currentlyDeployed": {
+          "type": "boolean"
+        },
+        "target": {
+          "type": "string"
+        },
+        "uuid": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "EmbeddedLink": {
+      "additionalProperties": {},
+      "properties": {
+        "href": {
+          "type": "string"
+        },
+        "name": {
+          "type": "string"
+        },
+        "templated": {
+          "type": "boolean"
+        },
+        "title": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "EmbeddedNamed": {
+      "additionalProperties": {},
+      "properties": {
+        "_links": {
+          "additionalProperties": {},
+          "properties": {
+            "self": {
+              "$ref": "#/$defs/EmbeddedLink"
+            }
+          },
+          "type": "object"
+        },
+        "name": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "EmbeddedReleasedVersion": {
+      "additionalProperties": {},
+      "properties": {
+        "_embedded": {
+          "additionalProperties": {},
+          "properties": {
+            "environment": {
+              "$ref": "#/$defs/Environment"
+            },
+            "pacticipant": {
+              "$ref": "#/$defs/EmbeddedNamed"
+            },
+            "version": {
+              "$ref": "#/$defs/EmbeddedVersion"
+            }
+          },
+          "type": "object"
+        },
+        "_links": {
+          "additionalProperties": {},
+          "properties": {
+            "self": {
+              "$ref": "#/$defs/EmbeddedLink"
+            }
+          },
+          "type": "object"
+        },
+        "createdAt": {
+          "type": "string"
+        },
+        "currentlySupported": {
+          "type": "boolean"
+        },
+        "uuid": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "EmbeddedTeam": {
+      "additionalProperties": {},
+      "properties": {
+        "_links": {
+          "additionalProperties": {},
+          "properties": {
+            "self": {
+              "$ref": "#/$defs/EmbeddedLink"
+            }
+          },
+          "type": "object"
+        },
+        "isDefault": {
+          "type": "boolean"
+        },
+        "name": {
+          "type": "string"
+        },
+        "uuid": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "EmbeddedVersion": {
+      "additionalProperties": {},
+      "properties": {
+        "_links": {
+          "additionalProperties": {},
+          "properties": {
+            "self": {
+              "$ref": "#/$defs/EmbeddedLink"
+            }
+          },
+          "type": "object"
+        },
+        "number": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "Environment": {
+      "additionalProperties": {},
+      "properties": {
+        "_embedded": {
+          "additionalProperties": {},
+          "properties": {
+            "teams": {
+              "items": {
+                "$ref": "#/$defs/EmbeddedTeam"
+              },
+              "type": "array"
+            }
+          },
+          "type": "object"
+        },
+        "_links": {
+          "additionalProperties": {},
+          "properties": {
+            "pb:currently-deployed-deployed-versions": {
+              "$ref": "#/$defs/EmbeddedLink"
+            },
+            "pb:currently-supported-released-versions": {
+              "$ref": "#/$defs/EmbeddedLink"
+            },
+            "pb:environments": {
+              "$ref": "#/$defs/EmbeddedLink"
+            },
+            "self": {
+              "$ref": "#/$defs/EmbeddedLink"
+            }
+          },
+          "type": "object"
+        },
+        "contacts": {
+          "items": {
+            "$ref": "#/$defs/Contact"
+          },
+          "type": "array"
+        },
+        "createdAt": {
+          "type": "string"
+        },
+        "displayName": {
+          "type": "string"
+        },
+        "isDefault": {
+          "type": "boolean"
+        },
+        "name": {
+          "type": "string"
+        },
+        "production": {
+          "type": "boolean"
+        },
+        "teamUuids": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "updatedAt": {
+          "type": "string"
+        },
+        "uuid": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    }
+  },
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "additionalProperties": {},
+  "properties": {
+    "_embedded": {
+      "additionalProperties": {},
+      "properties": {
+        "branchVersions": {
+          "items": {
+            "$ref": "#/$defs/EmbeddedBranchVersion"
+          },
+          "type": "array"
+        },
+        "deployedVersions": {
+          "items": {
+            "$ref": "#/$defs/EmbeddedDeployedVersion"
+          },
+          "type": "array"
+        },
+        "releasedVersions": {
+          "items": {
+            "$ref": "#/$defs/EmbeddedReleasedVersion"
+          },
+          "type": "array"
+        },
+        "tags": {
+          "items": {
+            "$ref": "#/$defs/EmbeddedNamed"
+          },
+          "type": "array"
+        }
+      },
+      "type": "object"
+    },
+    "_links": {
+      "additionalProperties": {},
+      "properties": {
+        "curies": {
+          "items": {
+            "$ref": "#/$defs/EmbeddedLink"
+          },
+          "type": "array"
+        },
+        "pb:latest-verification-results-where-pacticipant-is-consumer": {
+          "$ref": "#/$defs/EmbeddedLink"
+        },
+        "pb:pact-versions": {
+          "items": {
+            "$ref": "#/$defs/EmbeddedLink"
+          },
+          "type": "array"
+        },
+        "pb:pacticipant": {
+          "$ref": "#/$defs/EmbeddedLink"
+        },
+        "pb:record-deployment": {
+          "items": {
+            "$ref": "#/$defs/EmbeddedLink"
+          },
+          "type": "array"
+        },
+        "pb:record-release": {
+          "items": {
+            "$ref": "#/$defs/EmbeddedLink"
+          },
+          "type": "array"
+        },
+        "pb:tag": {
+          "$ref": "#/$defs/EmbeddedLink"
+        },
+        "self": {
+          "$ref": "#/$defs/EmbeddedLink"
+        }
+      },
+      "type": "object"
+    },
+    "buildUrl": {
+      "description": "Setting the buildUrl in the version resource is deprecated as it is now set when publishing consumer and provider contracts using the /contracts/publish and /provider-contracts/provider/{provider_name}/publish endpoints.",
+      "type": "string"
+    },
+    "createdAt": {
+      "type": "string"
+    },
+    "number": {
+      "type": "string"
+    },
+    "updatedAt": {
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

Addedv0.40.0Sep 3, 2026
Removedv0.34.0Aug 7, 2026
First observedv0.27.1Jun 29, 2026

TDQS

C2.9/5.0

Behavior2/5

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

Annotations already declare the operation non-read-only, idempotent, non-destructive and closed-world, so the safety profile is covered. The description adds nothing further: it does not say which fields are actually mutable (the schema only exposes buildUrl), whether omitted fields are preserved, or what happens to an unknown version number, so it contributes little beyond the title.

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

Conciseness3/5

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

The purpose statement is front-loaded and short, which is good, but the bulk of the description is a parameter list duplicating the input schema word for word. That space could have carried usage or mutability guidance instead.

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

Completeness4/5

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

This is a simple 3-parameter mutation with full schema coverage, an output schema, and annotations covering safety and idempotency, so the description is sufficient to invoke the tool correctly. Only the absence of any 'when to use' context keeps it from being fully complete.

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 100%, so the baseline is 3. The description's parameter bullets restate the schema text verbatim ('URL of the CI build that produced this version') rather than adding format, constraint, or mutability semantics, so no extra credit is warranted.

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 sentence states a specific verb and resource ('Update metadata for a specific pacticipant version'), which is clearly a write operation on a version record. It does not, however, distinguish itself from nearby siblings such as contract-testing_update_pacticipant or contract-testing_get_pacticipant_version, so the agent must infer the boundary from names alone.

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

Usage Guidelines2/5

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

There is no guidance on when to use this tool versus alternatives, no prerequisites, and no mention of when-not to use it. The 'Toolset: Branches and Versions' line is organizational metadata, not usage instruction.

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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