# Commerce Evidence Toolkit (mcpb · commerce-evidence-toolkit-0.1.0.mcpb)

Read-only local evidence checks for product records, feed snapshots, and dimensions.

- Trust score: 54/100 (low)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- mcpb · `commerce-evidence-toolkit-0.1.0.mcpb`: 54/100 (this document), [markdown](https://verifymcp.io/servers/iamgeorgekelly-commerce-evidence-toolkit/https-github-com-iamgeorgekelly-agentic-commerce-field-guide-releases-download-v.md), [page](https://verifymcp.io/servers/iamgeorgekelly-commerce-evidence-toolkit/https-github-com-iamgeorgekelly-agentic-commerce-field-guide-releases-download-v)

## Channel facts

- Registry: `mcpb`
- Package: `https://github.com/iamgeorgekelly/agentic-commerce-field-guide/releases/download/v0.1.0/commerce-evidence-toolkit-0.1.0.mcpb`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-18.

- **Supply Chain Security**: 23/100
  - No malware scan is available for this kind of package: the supply-chain vendors we use do not cover it. This is a permanent gap in our coverage, not a finding about the package.
  - Known CVEs were checked across the 92 of 92 dependencies we could resolve, so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - 31 of 92 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 23 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 64/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 323 tokens (~107/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 77/100
  - Stability observed for 23 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Commerce Evidence Toolkit MCP server?

Commerce Evidence Toolkit ships as an MCPB bundle, a single file you download and open in an MCP host that supports MCPB bundles, such as Claude Desktop. The host reads the launch command from the bundle's own manifest, so there is no command to copy. The MCP registry declares no SHA-256 for this bundle, so there is no published digest to check the download against.

- Download bundle: `https://github.com/iamgeorgekelly/agentic-commerce-field-guide/releases/download/v0.1.0/commerce-evidence-toolkit-0.1.0.mcpb`

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-18 (score 54, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-16 (score 53, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-14 (score 52, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-12 (score 51, +1)

No change was recorded against any check on this day. Stability & Change Management went from 50 to 57. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-10 (score 50, +2)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 50. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-07 (score 48, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 40. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-03 (score 47, +4)

- [functional improvement] Stability: unverified → 0.27

### 2026-09-28 (score 43, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

## MCP tools (3)

### `review_product_record` (~79 tokens)

Review one supplied product record using a selected canonical-field subset and positive USD prices. Optional mapping transforms only explicit supplied fields. Missing or conflicting facts remain on hold. Does not fetch URLs, verify GTIN assignment, or validate a complete provider upload.

Input parameters:

- `evidence` (object)
- `method` (string)
- `record` (object, required)

### `compare_feed_snapshots` (~91 tokens)

Compare supplied source and feed snapshots for exact item IDs, current USD prices, sale state and availability. Requires schemaVersion 1.0, profile openai-native-stable, explicit asOf, maxAgeHours, capturedAt and evidenceRef. Unresolved evidence yields hold with no proposed changes. No fetches or feed writes. See examples/feed-snapshots.json.

Input parameters:

- `input` (object, required)

### `compare_dimensions` (~106 tokens)

Compare supplied length, width and height using exact decimal unit conversion. Input requires schemaVersion 1.0, source and candidate with itemId, basis product/package, evidenceRef, and each axis as {value: decimal string, unit: mm/cm/m/in}; toleranceMm is an explicit decimal string. Same item, basis and named axes required. Unknowns yield hold. Does not establish physical fit or source truth. See examples/dimensions.json.

Input parameters:

- `input` (object, required)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/iamgeorgekelly-commerce-evidence-toolkit/https-github-com-iamgeorgekelly-agentic-commerce-field-guide-releases-download-v#diagnostics

## Score history

- 2026-10-18: 54
- 2026-10-17: 53
- 2026-10-16: 53
- 2026-10-15: 52
- 2026-10-14: 52
- 2026-10-13: 51
- 2026-10-12: 51
- 2026-10-10: 50
- 2026-10-07: 48
- 2026-10-04: 47
- 2026-10-03: 47
- 2026-10-02: 43
- 2026-10-01: 43
- 2026-09-30: 43
- 2026-09-29: 43
- 2026-09-28: 43
- 2026-09-27: 43
- 2026-09-26: 43
- 2026-09-25: 43

## Common questions

### What is the Commerce Evidence Toolkit MCP server?

Commerce Evidence Toolkit is an MCP server listed in the public MCP registry as io.github.iamgeorgekelly/commerce-evidence-toolkit. Read-only local evidence checks for product records, feed snapshots, and dimensions. This page covers its MCPB bundle (https://github.com/iamgeorgekelly/agentic-commerce-field-guide/releases/download/v0.1.0/commerce-evidence-toolkit-0.1.0…).

### Is the Commerce Evidence Toolkit MCP server safe to use?

Commerce Evidence Toolkit scores 54 out of 100 on VerifyMCP. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Commerce Evidence Toolkit MCP server expose?

Commerce Evidence Toolkit exposes 3 tools: review_product_record, compare_feed_snapshots, compare_dimensions. Their descriptions and schemas cost roughly 276 tokens of context every time the server is loaded.

### What licence is the Commerce Evidence Toolkit MCP server under?

Commerce Evidence Toolkit declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- Repository: https://github.com/iamgeorgekelly/agentic-commerce-field-guide
- Changelog RSS feed: https://verifymcp.io/servers/iamgeorgekelly-commerce-evidence-toolkit/https-github-com-iamgeorgekelly-agentic-commerce-field-guide-releases-download-v.xml
- Changelog JSON feed: https://verifymcp.io/servers/iamgeorgekelly-commerce-evidence-toolkit/https-github-com-iamgeorgekelly-agentic-commerce-field-guide-releases-download-v.json
- HTML version of this page: https://verifymcp.io/servers/iamgeorgekelly-commerce-evidence-toolkit/https-github-com-iamgeorgekelly-agentic-commerce-field-guide-releases-download-v