topos-mcp

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topos_assess_changeset

Read-onlyIdempotent

Assess a multi-file changeset against a git baseline and roll the per-file verdicts into a project before/after (read-only). Use for a module split or any edit spanning several files.

Instructions

Assess a multi-file changeset against a git baseline and roll the per-file verdicts into a project before/after (read-only). Use for a module split or any edit spanning several files. Each file is compared to baseline_ref (new files have no baseline). Flags complexity_relocated_within_file and project_regression. Returns a ChangesetResult.

Input Schema

Name	Required	Description	Default
`allow`	No	One-off acknowledged dangerous-call patterns.
`files`	Yes	Edited file paths (working tree) that make up the changeset.
`preferences`	No	Optional generator ranking.
`baseline_ref`	No	Git baseline ref each file is compared against.	HEAD
`gitnexus_dir`	No	.gitnexus directory.
`include_security_findings`	No	Include SECURE findings.

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedv0.11.0Oct 14, 2026
- addedInput schema / properties / gitnexus_dir / anyOf
```
Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
- addedInput schema / properties / gitnexus_dir / description
```
Added value: +".gitnexus directory."
```
- removedInput schema / properties / gitnexus_dir / type
```
Removed value: -[
-  "string",
-  "null"
-]
```
- addedInput schema / properties / include_security_findings / description
```
Added value: +"Include SECURE findings."
```

Changed5 schema fields changedv0.5.0Aug 9, 2026

changedInput schema / $defs / GeneratorInput / enum

Previous value: -[
-  "simple",
-  "composable",
-  "secure"
-]New value: +[
+  "simple",
+  "composable",
+  "secure",
+  "navigable"
+]

changedInput schema / $defs / LatticeElement / description

Previous value: -"The 8 elements of the free Heyting algebra H(G_qual) on the three\ngenerators SIMPLE, COMPOSABLE, SECURE, mirroring `EvaluationValue` on\nthe MCP wire."New value: +"The 16 elements of the free Heyting algebra H(G_qual) on the four\ngenerators SIMPLE, COMPOSABLE, SECURE, NAVIGABLE, mirroring\n`EvaluationValue` on the MCP wire.\n\nNote for clients pinned to the pre-v0.5.0 shape: `IDEAL` now requires\nall four pillars. The verdict that used to be `IDEAL` — the top of the\nthree-generator algebra — serializes as `SIMPLE_COMPOSABLE_SECURE`.\nVariants are declared in **bitmask order**, matching\n`EvaluationValue::ALL`, so the two enums convert by position. Serde\nkeys on variant names, so this ordering is an implementation detail\nand not part of the wire contract."

changedInput schema / $defs / LatticeElement / enum

Previous value: -[
-  "SLOP",
-  "SIMPLE",
-  "COMPOSABLE",
-  "SECURE",
-  "SIMPLE_COMPOSABLE",
-  "SIMPLE_SECURE",
-  "COMPOSABLE_SECURE",
-  "IDEAL"
-]New value: +[
+  "SLOP",
+  "SIMPLE",
+  "COMPOSABLE",
+  "SIMPLE_COMPOSABLE",
+  "SECURE",
+  "SIMPLE_SECURE",
+  "COMPOSABLE_SECURE",
+  "SIMPLE_COMPOSABLE_SECURE",
+  "NAVIGABLE",
+  "SIMPLE_NAVIGABLE",
+  "COMPOSABLE_NAVIGABLE",
+  "SIMPLE_COMPOSABLE_NAVIGABLE",
+  "SECURE_NAVIGABLE",
+  "SIMPLE_SECURE_NAVIGABLE",
+  "COMPOSABLE_SECURE_NAVIGABLE",
+  "IDEAL"
+]

changedInput schema / $defs / UserPreferencesInput / description

Previous value: -"Strict ranking over simple, composable, and secure."New value: +"Strict ranking over simple, composable, secure, and navigable."

changedInput schema / $defs / UserPreferencesInput / properties / ranking / description

Previous value: -"Permutation of simple/composable/secure, best first."New value: +"Permutation of simple/composable/secure/navigable, best first."

Changed10 schema fields changedv0.4.0Jul 27, 2026

addedInput schema / $defs

Added value: +{
+  "GeneratorInput": {
+    "description": "Wire form of a generator name.",
+    "enum": [
+      "simple",
+      "composable",
+      "secure"
+    ],
+    "type": "string"
+  },
+  "LatticeElement": {
+    "description": "The 8 elements of the free Heyting algebra H(G_qual) on the three\ngenerators SIMPLE, COMPOSABLE, SECURE, mirroring `EvaluationValue` on\nthe MCP wire.",
+    "enum": [
+      "SLOP",
+      "SIMPLE",
+      "COMPOSABLE",
+      "SECURE",
+      "SIMPLE_COMPOSABLE",
+      "SIMPLE_SECURE",
+      "COMPOSABLE_SECURE",
+      "IDEAL"
+    ],
+    "type": "string"
+  },
+  "UserPreferencesInput": {
+    "additionalProperties": false,
+    "description": "Strict ranking over simple, composable, and secure.",
+    "properties": {
+      "ranking": {
+        "description": "Permutation of simple/composable/secure, best first.",
+        "items": {
+          "$ref": "#/$defs/GeneratorInput"
+        },
+        "type": "array"
+      },
+      "target": {
+        "anyOf": [
+          {
+            "$ref": "#/$defs/LatticeElement"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "default": null,
+        "description": "Optional explicit target verdict."
+      }
+    },
+    "required": [
+      "ranking"
+    ],
+    "type": "object"
+  }
+}

addedInput schema / $schema

Added value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / properties / allow

Added value: +{
+  "default": [],
+  "description": "One-off acknowledged dangerous-call patterns.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

addedInput schema / properties / baseline_ref

Added value: +{
+  "default": "HEAD",
+  "description": "Git baseline ref each file is compared against.",
+  "type": "string"
+}

addedInput schema / properties / files

Added value: +{
+  "description": "Edited file paths (working tree) that make up the changeset.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

addedInput schema / properties / gitnexus_dir

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

addedInput schema / properties / include_security_findings

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

removedInput schema / properties / params

Removed value: -{
-  "additionalProperties": false,
-  "description": "Arguments for ``topos_assess_changeset`` (multi-file refactor).",
-  "properties": {
-    "allow": {
-      "description": "One-off acknowledged dangerous-call patterns.",
-      "items": {
-        "type": "string"
-      },
-      "type": "array"
-    },
-    "baseline_ref": {
-      "default": "HEAD",
-      "description": "Git baseline ref each file is compared against.",
-      "minLength": 1,
-      "type": "string"
-    },
-    "files": {
-      "description": "Edited file paths (working tree) that make up the changeset.",
-      "items": {
-        "type": "string"
-      },
-      "minItems": 1,
-      "type": "array"
-    },
-    "gitnexus_dir": {
-      "anyOf": [
-        {
-          "type": "string"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "default": null
-    },
-    "include_security_findings": {
-      "default": true,
-      "type": "boolean"
-    },
-    "preferences": {
-      "anyOf": [
-        {
-          "additionalProperties": false,
-          "description": "Strict ranking over simple, composable, and secure.",
-          "properties": {
-            "ranking": {
-              "description": "Permutation of simple/composable/secure, best first.",
-              "items": {
-                "description": "The three quality generators of ``G_qual``.",
-                "enum": [
-                  "simple",
-                  "composable",
-                  "secure"
-                ],
-                "type": "string"
-              },
-              "maxItems": 3,
-              "minItems": 3,
-              "type": "array"
-            },
-            "target": {
-              "anyOf": [
-                {
-                  "description": "The 8 quality verdicts, from SLOP (none) to IDEAL (simple+composable+secure).",
-                  "enum": [
-                    "SLOP",
-                    "SIMPLE",
-                    "COMPOSABLE",
-                    "SECURE",
-                    "SIMPLE_COMPOSABLE",
-                    "SIMPLE_SECURE",
-                    "COMPOSABLE_SECURE",
-                    "IDEAL"
-                  ],
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "default": null,
-              "description": "Optional explicit target verdict."
-            }
-          },
-          "required": [
-            "ranking"
-          ],
-          "type": "object"
-        },
-        {
-          "type": "null"
-        }
-      ],
-      "default": null,
-      "description": "Optional generator ranking."
-    }
-  },
-  "required": [
-    "files"
-  ],
-  "type": "object"
-}

addedInput schema / properties / preferences

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/UserPreferencesInput"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Optional generator ranking."
+}

changedInput schema / required

Previous value: -[
-  "params"
-]New value: +[
+  "files"
+]

First observedv0.3.6Jul 2, 2026

TDQS

A4.1/5.0

Behavior4/5

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

Annotations already declare read-only, idempotent, non-destructive, so the safety profile is covered. The description adds genuine behavioral context beyond that: per-file comparison against baseline_ref, the special case that new files have no baseline, and the two named flags it emits (complexity_relocated_within_file, project_regression). It stops short of explaining the ChangesetResult payload.

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 purpose, then usage, then mechanics, with no filler sentences. The phrasing is slightly choppy across lines but every sentence carries information; minor tightening would help.

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?

With no output schema, the description names the return type and the key flags, and the schema fully documents all parameters, so the core picture is complete for a 6-parameter tool. The main residual gap is that 'ChangesetResult' is not described, leaving the returned structure opaque.

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 all six parameters are already documented in the schema; per the rubric this establishes a baseline of 3. The description reinforces baseline_ref semantics ('new files have no baseline') but adds nothing about allow, preferences, gitnexus_dir, or include_security_findings.

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 ('Assess a multi-file changeset against a git baseline') plus the aggregation behavior ('roll the per-file verdicts into a project before/after'). The multi-file scope distinguishes it from single-file siblings like topos_evaluate_file or topos_assess_worktree_change.

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?

'Use for a module split or any edit spanning several files' gives a concrete when-to-use condition. It does not, however, explicitly name the nearest alternative (topos_assess_worktree_change / topos_assess_snapshot) or state when not to use it, so an agent must still infer the boundary.

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

Deploy Server

topos_assess_changeset

Instructions

Input Schema

Schema Changelog

TDQS

Other Tools