# PolyAccounts synthetic accounting demo (mcpb · polyaccounts-demo.mcpb)

Synthetic accounting MCP demo with exact balances and ledger evidence. No account or API key.

- Trust score: 47/100 (low)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-21

## Components

- mcpb · `polyaccounts-demo.mcpb`: 47/100 (this document), [markdown](https://verifymcp.io/servers/andrewblount-polyaccounts-demo/https-github-com-andrewblount-polyaccounts-agent-kit-releases-download-v1-0-2-po.md), [page](https://verifymcp.io/servers/andrewblount-polyaccounts-demo/https-github-com-andrewblount-polyaccounts-agent-kit-releases-download-v1-0-2-po)

## Channel facts

- Registry: `mcpb`
- Package: `https://github.com/andrewblount/polyaccounts-agent-kit/releases/download/v1.0.2/polyaccounts-demo.mcpb`
- Version: `1.0.2`
- 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 2026-09-21.

- **Supply Chain Security**: 13/100
  - Malware scan not yet available for this package.
  - Known CVEs could not be checked: this artifact ships no SBOM, so there is no dependency list to read. Publishing one would let us assess it.
  - No install/post-install scripts declared.
  - Dependency health could not be checked: this artifact ships no SBOM, so there is no dependency list to read. Publishing one would let us assess it.
- **Provenance & Transparency**: 48/100
  - 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 8 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 70/100
  - 67% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 272 tokens (~54/item across 5 items; 4 tools + 1 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 30/100
  - Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% 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 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

- Download bundle: `https://github.com/andrewblount/polyaccounts-agent-kit/releases/download/v1.0.2/polyaccounts-demo.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.

### 2026-09-21 (score 47, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-19 (score 46, +3)

- [functional improvement] Stability: unverified → 0.23

### 2026-09-12 (score 43)

First indexed and scored.

## MCP tools (4)

### `accounting_context` (~33 tokens)

accounting context

Inspect Juniper Studio, an invented USD company, its accounts and available periods. No credentials, customer records or network access.

### `ledger_entries` (~80 tokens)

ledger entries

Read exact decimal strings and stable entry IDs from synthetic July and August 2026 ledger data. Both debit and credit legs are available.

Input parameters:

- `account` (string): Exact account name from accounting_context
- `from` (string): Inclusive YYYY-MM-DD date in the synthetic fixture
- `to` (string): Inclusive YYYY-MM-DD date in the synthetic fixture

### `trial_balance` (~66 tokens)

trial balance

Calculate period activity from both legs of synthetic journal entries using exact integer arithmetic. A balanced trial balance alone does not establish correct books.

Input parameters:

- `from` (string): Inclusive YYYY-MM-DD date in the synthetic fixture
- `to` (string): Inclusive YYYY-MM-DD date in the synthetic fixture

### `expense_changes` (~44 tokens)

expense changes

Compare synthetic August 2026 with July 2026 and return exact expense differences with ledger evidence. The fixture clock is August 31, 2026, independent of today.

## Diagnostics

Captured diagnostic sections: Provenance. The full working is on the page: https://verifymcp.io/servers/andrewblount-polyaccounts-demo/https-github-com-andrewblount-polyaccounts-agent-kit-releases-download-v1-0-2-po#diagnostics

## Score history

- 2026-09-21: 47
- 2026-09-20: 46
- 2026-09-19: 46
- 2026-09-18: 43
- 2026-09-17: 43
- 2026-09-16: 43
- 2026-09-15: 43
- 2026-09-14: 43
- 2026-09-13: 43
- 2026-09-12: 43

## Common questions

### What is the PolyAccounts synthetic accounting demo MCP server?

PolyAccounts synthetic accounting demo is an MCP server listed in the public MCP registry as io.github.andrewblount/polyaccounts-demo. Synthetic accounting MCP demo with exact balances and ledger evidence. No account or API key. This page covers its MCPB bundle (https://github.com/andrewblount/polyaccounts-agent-kit/releases/download/v1.0.2/polyaccounts-demo.mcpb).

### Is the PolyAccounts synthetic accounting demo MCP server safe to use?

PolyAccounts synthetic accounting demo scores 47 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 PolyAccounts synthetic accounting demo MCP server expose?

PolyAccounts synthetic accounting demo exposes 4 tools: accounting_context, ledger_entries, trial_balance, expense_changes. Their descriptions and schemas cost roughly 223 tokens of context every time the server is loaded.

### What licence is the PolyAccounts synthetic accounting demo MCP server under?

PolyAccounts synthetic accounting demo 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/andrewblount/polyaccounts-agent-kit
- Website: https://polyaccounts.com/demo
- Changelog RSS feed: https://verifymcp.io/servers/andrewblount-polyaccounts-demo/https-github-com-andrewblount-polyaccounts-agent-kit-releases-download-v1-0-2-po.xml
- Changelog JSON feed: https://verifymcp.io/servers/andrewblount-polyaccounts-demo/https-github-com-andrewblount-polyaccounts-agent-kit-releases-download-v1-0-2-po.json
- HTML version of this page: https://verifymcp.io/servers/andrewblount-polyaccounts-demo/https-github-com-andrewblount-polyaccounts-agent-kit-releases-download-v1-0-2-po