# x402 Payment Request Parser

> x402 payment-request parser with a limited token list. Does not sign, approve or judge payments.

- name: io.github.mk-career-planning/x402-safety-kit
- version: 0.1.0
- connection class: R0 (autonomous)
- trust: 80/100 flags: no-repository
- quality: 81/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.mk-career-planning%2Fx402-safety-kit
- tools: https://api.protogrid.dev/v1/servers/io.github.mk-career-planning%2Fx402-safety-kit/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "x402-safety-kit": {
      "type": "http",
      "url": "https://x402-safety-kit-production.mk-career-planning.workers.dev/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 45
- drivers: +website +reachable +uptime-100% +updated-4d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 81/100 (new)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 86 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 4 of 4 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: catalog (destructiveHint, idempotentHint, openWorldHint); x402_parse_payment_request (destructiveHint); x402_known_assets (destructiveHint); …
- pass `tools.token_cost`: about 622 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`: tool history recorded for 3 of the 7 days needed

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 4, about 622 tokens to load them all
- tool set hash: 3d24a5ecff8cf7b2981438e3bd14798b
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.mk-career-planning/x402-safety-kit.svg)](https://protogrid.dev/servers/io.github.mk-career-planning/x402-safety-kit)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://x402-safety-kit-production.mk-career-planning.workers.dev/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (4)

- `catalog`: List the tools of this server with prices, data sources, licensing, daily limits and data freshness.
- `get_receipt`: Re-fetch the stored result of a settled paid call by its receipt_id, for when the response was lost after payment. Free. Unknown or unsettled receipt ids return RECEIPT_NOT_FOUND. Results are kept for 90 days after settlement.
- `x402_known_assets`: Free. The limited reference list this server compares token addresses with: known assets (network, contract, symbol, decimals) with sources and check dates, known CAIP-2 networks, scheme names from the x402 specs, and payment flows. A table match is not proof that an asset or a merchant is genuine.
- `x402_parse_payment_request`: Free. Decode one x402 v2 payment request (base64 PAYMENT-REQUIRED header, PaymentRequired JSON or MCP tool result) and list every accepts option with exact atomic and decimal amounts. Token addresses are compared with a limited reference list. status: parsed, ambiguous (options differ in recipient, network or amount; none is chosen), malformed or unsupported. Does not verify the merchant, authorize a transfer, assess fraud risk, or guarantee any payment. URLs in the input are never fetched.