What are the risks of connecting to api.spendpreflight.com?

No blocking issues were found in the static + spec checks. Overall trust grade A- (91/100).

When was api.spendpreflight.com last audited?

Last checked 2026-10-26; wmcp.sh re-checks it on a schedule for tool drift and rug-pulls.

A-

api.spendpreflight.com

Item: api.spendpreflight.com
Rating: 91
Author: wmcp.sh

https://api.spendpreflight.com/mcp

91/100 · MCP Trust Grade · checked 3d ago · MCP 2025-06-18

Is the api.spendpreflight.com MCP server safe to use?

Independent trust grade A- (91/100). No blocking issues found in the static + spec checks. wmcp.sh continuously watches api.spendpreflight.com for tool drift and rug-pulls. The grade is free and identical whether or not the operator pays.

⚠ Rug-pull watch: this server's tool surface has changed 3× since baseline — last 3d ago. Continuously watched by wmcp.sh for drift & rug-pulls.

What it offers — 10 tools · Developer Tools

listing_guard

Bazaar Listing Guard: CDP technical validation plus a bounded heuristic metadata screen for agent-directed instructions, embedded URLs, tool calls, in

check_listing

Compatibility alias of listing_guard for existing clients. Prefer listing_guard for a new detailed metadata check; these are the same operation, not t

find_rv_stations

Nearest RV dump/water stations from FillPoint RV's dated September 17, 2026 ODbL snapshot. $0.01 for bounded straight-line proximity calculation, not

size_solar

Off-grid PV energy-balance estimate based on Wattpath by Nomad Energy Club. Supply daily loads, peak sun hours, PV losses, and optional battery assump

check_token

Base contract safety signals from bounded public-chain reads and OFAC. Basic: deployed bytecode and SDN match. Deep adds standard owner(), paused(), t

lint_endpoint

Free x402 Lint by SpendPreflight. Checks a public HTTPS endpoint with an unpaid GET: v1/v2 challenge shape, payTo/asset/network syntax, price, Bazaar

check_payee

Payee risk check. Screens a payee wallet address and name against the OFAC SDN sanctions list and checks the merchant domain's registration age and DN

preflight_payment

Call this before any x402/USDC payment to evaluate the actual challenge or cart before signing. Spend preflight for AI agents. Send the x402 PaymentRe

check_endpoint

Cached x402 endpoint observations, operated by SpendPreflight. Returns a transparent score (or unknown), its components and seven-day unpaid probe his

get_service_info

Free, read-only service reference. Use when you need prices, default spending rules, payment setup, trial allowance, or a ready-to-use example call. I

Spec conformance20%100

✓ initialize → protocolVersion 2025-06-18
✓ initialize HTTP 200
✓ unknown method → -32601
✓ tools/list → 10 tools
✓ every tool has name + inputSchema

Security (OWASP MCP)30%100

10 tools scanned
no injection markup
no secret-path refs

Reliability / performance20%92

single-probe latency 557ms (PRELIMINARY — continuous uptime/p95 from proxy telemetry lands in v2)

Tool hygiene15%82

90% of tools have typed inputSchema
4/10 declare outputSchema
no unannotated destructive tools

Transparency / provenance15%70

HTTPS ✓
advertises protocol 2025-06-18

Observed behavior

No proxied traffic observed for this host yet. Connect it at /connect and its grade gains a measured Reliability score + per-tool behavioral evidence — the half a static scan can't produce.

Findings

No blocking issues found in the static + spec checks.

Grade another server

We re-grade api.spendpreflight.com on a schedule and alert your Slack/webhook the moment its tools change or its grade drops — rug-pull insurance for the connection.

Run api.spendpreflight.com? Claim it (free) to get drift alerts and show an independently-verified trust badge. The grade stays free — claiming just ties it to you.

Share this report card

A 1200×630 card with the grade + audit — drop it in a post, Slack, or your repo.

MCP Trust report card — api.spendpreflight.com grade A-

Share on X Open card image

https://wmcp.sh/mcp/grade/api.spendpreflight.com

Embed this grade

A live badge — it re-verifies itself and shows current stability. Static scorecards can't. Paste it in your README or site to show users you're independently audited.

Markdown (for your README)

[![MCP Trust Grade A-](https://wmcp.sh/mcp/grade/api.spendpreflight.com/badge.svg)](https://wmcp.sh/mcp/grade/api.spendpreflight.com)

HTML

<a href="https://wmcp.sh/mcp/grade/api.spendpreflight.com"><img src="https://wmcp.sh/mcp/grade/api.spendpreflight.com/badge.svg" alt="MCP Trust Grade A- · wmcp.sh"></a>

Agents: check this before connecting

Add the wmcp.sh trust oracle as an MCP server and call grade_mcp_server / check_mcp_drift in your agent's pre-connection gate:

https://wmcp.sh/mcp/trust

How this grade is computed. An open, independent rubric — Spec conformance (20%), Security mapped to the OWASP MCP Top 10 (30%), Reliability (20%), Tool hygiene (15%), Transparency (15%) — run by connecting to the server and inspecting its real MCP surface. The grade is free and identical whether or not the operator pays. v1 uses static + spec signals from a single connection; continuous uptime, real latency, and annotation-truthing (declared readOnly vs observed behavior) layer on via the wmcp.sh proxy.