# Sentinel Payment Boundary Tools (mcpb · sentinel-agent-payment-boundary-v0.4.1.mcpb)

Read-only payment-boundary preflights plus an unsubmitted public quote-request draft tool.

- Trust score: 42/100 (low)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- mcpb · `sentinel-agent-payment-boundary-v0.4.1.mcpb`: 42/100 (this document), [markdown](https://verifymcp.io/servers/terminallylazy-sentinel-recovery-services/https-github-com-terminallylazy-sentinel-recovery-support-releases-download-v0-4.md), [page](https://verifymcp.io/servers/terminallylazy-sentinel-recovery-services/https-github-com-terminallylazy-sentinel-recovery-support-releases-download-v0-4)

## Channel facts

- Registry: `mcpb`
- Package: `https://github.com/TerminallyLazy/sentinel-recovery-support/releases/download/v0.4.1/sentinel-agent-payment-boundary-v0.4.1.mcpb`
- Version: `0.4.1`
- 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 2026-08-03.

- **Supply Chain Security**: 13/100
  - Malware scan not yet available for this package.
  - CVE data not yet available for this package.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (94 of 98), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 32/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: no license is declared.
  - Actively maintained (last published 23 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 69/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 474 tokens (~94/item across 5 items; 3 tools + 2 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 84/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 44% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

- Download bundle: `https://github.com/TerminallyLazy/sentinel-recovery-support/releases/download/v0.4.1/sentinel-agent-payment-boundary-v0.4.1.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.

### 2026-08-03 (score 42, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 41, +12)

- [functional regression] Security disclosure: fail → unverified
- [functional improvement] Schema quality: unverified → fair
- [functional improvement] Stability: unverified → 0.23
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Maintenance: unverified → pass

### 2026-08-01 (score 29, −1)

- [functional regression] Maintenance: pass → unverified

### 2026-07-31 (score 30, −7)

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

### 2026-07-30 (score 37, −2)

- [functional regression] Maintenance: pass → unverified

### 2026-07-28 (score 39, +2)

- [functional improvement] Maintenance: unverified → pass

### 2026-07-27 (score 37)

First indexed and scored.

## MCP tools (3)

### `prepare_agent_payment_boundary_quote_request` (~144 tokens)

Prepare Sentinel Service Quote Request

Prepare a complete public GitHub quote-request draft for Sentinel's fixed-scope Agent Payment Boundary Review from one or two public HTTPS URLs without credentials, query strings, fragments, or non-public hosts. This local read-only tool does not submit the request, fetch URLs, connect a wallet, move funds, authorize payment, or create a service entitlement.

Input parameters:

- `intendedUse` (string): Optional public question or intended use for the written review.
- `preferredFormat` (string)
- `publicDocumentUrls` (array, required)
- `requestTransport` (string, required)
- `serviceId` (string, required)
- `timingNeed` (string): Optional public timing need.

Output parameters:

- `complete` (boolean)
- `contract` (object)
- `destination` (object)
- `kind` (string)
- `packetStatus` (string)
- `request` (object)
- `requestBody` (string)
- `requestTitle` (string)
- `requestTransport` (string)
- `safety` (object)
- `schemaVersion` (string)
- `serviceId` (string)
- `servicePriceUsd` (number)
- `submissionRequirements` (object)

### `preflight_agent_payment_boundary` (~99 tokens)

Agent Payment Boundary Preflight

Deterministically inspect one or two inline public agent/payment documents for authority, quote, replay, receipt, wallet-secret, and integrity boundaries. This free preflight does not fetch URLs, execute content, submit a request, or move funds.

Input parameters:

- `documents` (array, required): One or two inline public documents, at most 100 KiB combined.
- `question` (string): Optional non-sensitive context; it does not change the fixed checks.

Output parameters:

- `disclaimer` (string)
- `escalation` (object)
- `findings` (array)
- `kind` (string)
- `schemaVersion` (string)
- `scope` (object)
- `summary` (object)

### `preflight_x402_v2_payment_required` (~77 tokens)

x402 v2 PaymentRequired EIP-3009 Preflight

Deterministically inspect one decoded inline x402 v2 PaymentRequired JSON document under a closed-world exact-EVM EIP-3009 Sentinel safety profile. This free preflight does not fetch URLs, execute content, verify signatures or settlement, connect a wallet, or move funds.

Input parameters:

- `document` (object, required)

Output parameters:

- `disclaimer` (string)
- `escalation` (object)
- `findings` (array)
- `kind` (string)
- `limitations` (object)
- `schemaVersion` (string)
- `scope` (object)
- `summary` (object)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/terminallylazy-sentinel-recovery-services/https-github-com-terminallylazy-sentinel-recovery-support-releases-download-v0-4#diagnostics

## Score history

- 2026-08-03: 42
- 2026-08-02: 41
- 2026-08-01: 29
- 2026-07-31: 30
- 2026-07-30: 37
- 2026-07-28: 39
- 2026-07-27: 37

## Links

- Repository: https://github.com/TerminallyLazy/sentinel-recovery-support
- Website: https://terminallylazy.github.io/sentinel-recovery-support/
- Changelog RSS feed: https://verifymcp.io/servers/terminallylazy-sentinel-recovery-services/https-github-com-terminallylazy-sentinel-recovery-support-releases-download-v0-4/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/terminallylazy-sentinel-recovery-services/https-github-com-terminallylazy-sentinel-recovery-support-releases-download-v0-4/changelog.json
- HTML version of this page: https://verifymcp.io/servers/terminallylazy-sentinel-recovery-services/https-github-com-terminallylazy-sentinel-recovery-support-releases-download-v0-4