UI Verify

Page through a build's stories by status

list_build_stories

Read-only

Page through one build's stories filtered by status (resolved by commitSha/prNumber/buildId). Use it to read past get_build's first page, or to browse the unchanged/passed stories get_build only counts. status='changed' returns changed stories (same shape + order as get_build, regression-first, each with its comments {total, unresolved}; unresolved>0 means an open review note - read it with list_comments first); status='failed' returns failed stories; status='unchanged' returns the stories that did NOT change this build but have a baseline on this branch (storyId, viewport, browser) - fetch any of their images by storyId with get_diff or render_diff_image to confirm 'identical to baseline'. Returns { stories, nextCursor }: pass nextCursor back as cursor for the next page; null means no more. limit defaults to 25 (max 100). Unchanged is only available once the build has settled (an in-progress build has rendered nothing, so it returns an empty page).

Input Schema

TableJSON Schema

Name	Required	Description
`limit`	No	Page size (default 25, max 100).
`cursor`	No	The nextCursor from a prior page; omit for the first page.
`status`	Yes	Which stories to page: changed, failed, or unchanged (baselined, didn't change this build).
`buildId`	No	Resolve this exact build id.
`prNumber`	No	Resolve the latest build for this PR number.
`commitSha`	No	Resolve the build for this git commit SHA.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`stories`	Yes
`nextCursor`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedSep 25, 2026

changedOutput schema / properties / stories / items / anyOf

Previous value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "aiClassification": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "aiConfidence": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "aiFlagReason": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "aiIntroducedBy": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "aiSummary": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "aiVerdict": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "browser": {
-        "type": "string"
-      },
-      "changedPct": {
-        "type": [
-          "number",
-          "null"
-        ]
-      },
-      "decision": {
-        "type": [
-          "string",
-          "null"
-        ]
-      },
-      "diffResultId": {
-        "format": "uuid",
-        "type": "string"
-      },
-      "isNew": {
-        "type": "boolean"
-      },
-      "name": {
-        "type": "string"
-      },
-      "storyId": {
-        "type": "string"
-      },
-      "title": {
-        "type": "string"
-      },
-      "unstable": {
-        "type": "boolean"
-      },
-      "viewport": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "diffResultId",
-      "storyId",
-      "title",
-      "name",
-      "viewport",
-      "browser",
-      "changedPct",
-      "decision",
-      "isNew",
-      "unstable",
-      "aiVerdict",
-      "aiClassification",
-      "aiIntroducedBy",
-      "aiConfidence",
-      "aiSummary",
-      "aiFlagReason"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "browser": {
-        "type": "string"
-      },
-      "error": {
-        "type": "string"
-      },
-      "errorTruncated": {
-        "type": "boolean"
-      },
-      "kind": {
-        "enum": [
-          "render",
-          "interaction"
-        ],
-        "type": "string"
-      },
-      "name": {
-        "type": "string"
-      },
-      "storyId": {
-        "type": "string"
-      },
-      "title": {
-        "type": "string"
-      },
-      "viewport": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "storyId",
-      "title",
-      "name",
-      "viewport",
-      "browser",
-      "error",
-      "errorTruncated",
-      "kind"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "browser": {
-        "type": "string"
-      },
-      "storyId": {
-        "type": "string"
-      },
-      "viewport": {
-        "type": "string"
-      }
-    },
-    "required": [
-      "storyId",
-      "viewport",
-      "browser"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "aiClassification": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "aiConfidence": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "aiFlagReason": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "aiIntroducedBy": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "aiSummary": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "aiVerdict": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "browser": {
+        "type": "string"
+      },
+      "changedPct": {
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "comments": {
+        "additionalProperties": false,
+        "properties": {
+          "total": {
+            "type": "number"
+          },
+          "unresolved": {
+            "type": "number"
+          }
+        },
+        "required": [
+          "total",
+          "unresolved"
+        ],
+        "type": "object"
+      },
+      "decision": {
+        "type": [
+          "string",
+          "null"
+        ]
+      },
+      "diffResultId": {
+        "format": "uuid",
+        "type": "string"
+      },
+      "isNew": {
+        "type": "boolean"
+      },
+      "name": {
+        "type": "string"
+      },
+      "storyId": {
+        "type": "string"
+      },
+      "title": {
+        "type": "string"
+      },
+      "unstable": {
+        "type": "boolean"
+      },
+      "viewport": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "diffResultId",
+      "storyId",
+      "title",
+      "name",
+      "viewport",
+      "browser",
+      "changedPct",
+      "decision",
+      "isNew",
+      "unstable",
+      "aiVerdict",
+      "aiClassification",
+      "aiIntroducedBy",
+      "aiConfidence",
+      "aiSummary",
+      "aiFlagReason",
+      "comments"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "browser": {
+        "type": "string"
+      },
+      "error": {
+        "type": "string"
+      },
+      "errorTruncated": {
+        "type": "boolean"
+      },
+      "kind": {
+        "enum": [
+          "render",
+          "interaction"
+        ],
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      },
+      "storyId": {
+        "type": "string"
+      },
+      "title": {
+        "type": "string"
+      },
+      "viewport": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "storyId",
+      "title",
+      "name",
+      "viewport",
+      "browser",
+      "error",
+      "errorTruncated",
+      "kind"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "browser": {
+        "type": "string"
+      },
+      "storyId": {
+        "type": "string"
+      },
+      "viewport": {
+        "type": "string"
+      }
+    },
+    "required": [
+      "storyId",
+      "viewport",
+      "browser"
+    ],
+    "type": "object"
+  }
+]

First observedSep 6, 2026

TDQS

A4.9/5.0

Behavior5/5

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

Annotations already signal readOnlyHint=true, and the description adds rich behavioral context: pagination via nextCursor/cursor, limit default and max, status-specific response shapes, the unresolved>0 review-note convention, and the caveat that unchanged stories only appear once the build has settled. No contradiction with annotations is present.

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?

The description is long but densely packed with behaviorally important details; the core purpose is front-loaded before the status-specific explanations. Minor redundancy such as 'status='failed' returns failed stories' keeps it from a 5, but it remains efficient relative to the tool's complexity.

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?

Given the tool's complexity, the description is complete: it covers the return shape, pagination contract, default and max page size, all three statuses, build resolution options, and the in-progress-build empty page behavior. The output schema exists, so additional return-value detail is not required.

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

Parameters5/5

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

Schema coverage is 100%, but the description goes well beyond the schema: it explains the meaning of each status value, how cursor pagination works, how limit defaults and caps, and clarifies that buildId/prNumber/commitSha are alternative resolvers. This materially helps an agent set parameters correctly.

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 and resource ('Page through one build's stories filtered by status') and differentiates itself from get_build by noting it reads past the first page and covers statuses get_build only counts. The status values are each given concrete semantics, so an agent can select this tool without ambiguity.

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 says when to use it ('Use it to read past get_build's first page, or to browse the unchanged/passed stories get_build only counts') and points to sibling tools for follow-up actions: list_comments for open review notes, and get_diff or render_diff_image to fetch unchanged images. It also distinguishes between build resolution methods (commitSha/prNumber/buildId).

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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