Sentinel Payment Boundary Tools
MCPB · SENTINEL-AGENT-PAYMENT-BOUNDARY-V0.4.1.MCPB · SCANNED SEP 20
Read-only payment-boundary preflights plus an unsubmitted public quote-request draft tool.
Available components
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. How we score → Why this is hard to score →
Supply Chain Security23
- Malware scan not yet available for this package.Unverified
- Known CVEs were checked across the 96 of 96 dependencies we could resolve, so this covers what we could see, not the whole tree.Partial
- No install/post-install scripts declared.Pass
- 31 of 96 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency32
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- License check failed: no license is declared. See how to fix → Fail
- Actively maintained (last published 71 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability82
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 474 tokens (~94/item across 5 items; 3 tools + 2 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management97
- Stability observed for 29 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage84
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 44% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
mcpb · sentinel-agent-payment-boundary-v0.4.1.mcpb
Download bundleEvery change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 19 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Sept 26 −3
- Stability: pass → 0.83 functional
- 15 Sept 26 +1
- Stability: 0.97 → pass security
- 13 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 9 Sept 26 −3
- Stability: pass → 0.80 functional
- 8 Sept 26 0
- Stability: 0.97 → pass security
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Analysed mcpb/https://github.com/TerminallyLazy/sentinel-recovery-support/releases/download/v0.4.1/sentinel-agent-payment-boundary-v0.4.1.mcpb@0.4.1
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | mcpb |
Background: How many MCP packages publish verified provenance →
Dependencies 96 packages
| Packages resolved | 96 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
preflight_agent_payment_boundary Agent Payment Boundary Preflight ~99
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.
| Name | Type | Req | Description |
|---|---|---|---|
| documents | array | yes | One or two inline public documents, at most 100 KiB combined. |
| question | string | – | Optional non-sensitive context; it does not change the fixed checks. |
| Name | Type | Req | Description |
|---|---|---|---|
| disclaimer | string | yes | – |
| escalation | object | yes | – |
| findings | array | yes | – |
| kind | string | yes | – |
| schemaVersion | string | yes | – |
| scope | object | yes | – |
| summary | object | yes | – |
No examples provided.
preflight_x402_v2_payment_required x402 v2 PaymentRequired EIP-3009 Preflight ~77
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.
| Name | Type | Req | Description |
|---|---|---|---|
| document | object | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| disclaimer | string | yes | – |
| escalation | object | yes | – |
| findings | array | yes | – |
| kind | string | yes | – |
| limitations | object | yes | – |
| schemaVersion | string | yes | – |
| scope | object | yes | – |
| summary | object | yes | – |
No examples provided.
prepare_agent_payment_boundary_quote_request Prepare Sentinel Service Quote Request ~144
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.
| Name | Type | Req | Description |
|---|---|---|---|
| intendedUse | string | – | Optional public question or intended use for the written review. |
| preferredFormat | string | – | – |
| publicDocumentUrls | array | yes | – |
| requestTransport | string | yes | – |
| serviceId | string | yes | – |
| timingNeed | string | – | Optional public timing need. |
| Name | Type | Req | Description |
|---|---|---|---|
| complete | boolean | yes | – |
| contract | object | yes | – |
| destination | object | yes | – |
| kind | string | yes | – |
| packetStatus | string | yes | – |
| request | object | yes | – |
| requestBody | string | yes | – |
| requestTitle | string | yes | – |
| requestTransport | string | yes | – |
| safety | object | yes | – |
| schemaVersion | string | yes | – |
| serviceId | string | yes | – |
| servicePriceUsd | number | yes | – |
| submissionRequirements | object | yes | – |
No examples provided.
What is the Sentinel Payment Boundary Tools MCP server?
Sentinel Payment Boundary Tools is an MCP server listed in the public MCP registry as io.github.TerminallyLazy/sentinel-recovery-services. Read-only payment-boundary preflights plus an unsubmitted public quote-request draft tool. This page covers its MCPB bundle (https://github.com/TerminallyLazy/sentinel-recovery-support/releases/download/v0.4.1/sentinel-agent-payment-boundary-v0…).
Is the Sentinel Payment Boundary Tools MCP server safe to use?
Sentinel Payment Boundary Tools scores 58 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 Sentinel Payment Boundary Tools MCP server expose?
Sentinel Payment Boundary Tools exposes 3 tools: prepare_agent_payment_boundary_quote_request, preflight_agent_payment_boundary, preflight_x402_v2_payment_required. Their descriptions and schemas cost roughly 320 tokens of context every time the server is loaded.