# merona — x402 settlement index (remote · api.merona.io)

See what actually settles on x402: wash-adjusted volume, payTo checks. Free, no key, no signup.

- Trust score: 62/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-07

## Components

- remote · `api.merona.io`: 62/100 (this document), [markdown](https://verifymcp.io/servers/io-merona-settlement-index/api.md), [page](https://verifymcp.io/servers/io-merona-settlement-index/api)

## Channel facts

- Endpoint: `https://api.merona.io/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, 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 2026-08-07.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 455 tokens (~113/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 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.
- **Capabilities**: 40/100
  - Spec-recency check failed: implements MCP spec 2025-03-26; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http io-merona-settlement-index https://api.merona.io/mcp
```

### Codex

```toml
[mcp_servers.io-merona-settlement-index]
url = "https://api.merona.io/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-merona-settlement-index": {
      "type": "remote",
      "url": "https://api.merona.io/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add io-merona-settlement-index --url https://api.merona.io/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  io-merona-settlement-index:
    url: "https://api.merona.io/mcp"
```

### Other

```json
{
  "mcpServers": {
    "io-merona-settlement-index": {
      "type": "http",
      "url": "https://api.merona.io/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## 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.

### 2026-08-07 (score 62, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-08-06 (score 61)

First indexed and scored.

## MCP tools (4)

### `payto_check` (~119 tokens)

Check whether an x402 endpoint or wallet pays out where it claims to, before your agent sends funds. Takes one wallet address or endpoint URL. Returns any catalog-vs-live payout mismatch, dated payout-rotation history, and whether the address has settled on chain. Free, no key. Use mismatch_feed instead to list every known mismatch. Records are dated facts, not accusations, and no record found is not a clearance.

Input parameters:

- `query` (string, required): Wallet address (0x… or base58) or endpoint URL/hostname to look up.

### `mismatch_feed` (~78 tokens)

List every x402 endpoint currently advertising one payout address while asking payers for another, from merona's nightly probe of the public catalog. Returns the current entries with advertised vs live addresses, counts and as-of dates. Takes no arguments. Free, no key. Use payto_check instead when you already have a specific address or endpoint to check.

### `clean_stats` (~80 tokens)

Get wash-adjusted x402 settlement volume per chain — spend that survives removal of funded loops and self-dealing cycles, which can differ from raw transfer totals by orders of magnitude. Returns clean settlement count, clean volume in USD and an as-of date per chain. Takes no arguments. Free, no key. These are the figures published on merona.io.

### `trust_score` (~178 tokens)

Score a specific seller wallet before paying it: wash-aware m.Score with an A–F grade, component breakdown, wash flags including multi-hop cycle detection, and the snapshot SHA so the result can be re-derived independently. Requires chain and address. Paid, $0.005 per call: pass payment=<base64 X-PAYMENT payload> to pay via x402, or api_key=<key>. Called without either, it returns x402 payment instructions rather than an error.

Input parameters:

- `address` (string, required): Seller wallet address to score.
- `api_key` (string): merona API key. Alternative to per-call x402 payment.
- `chain` (string, required): Chain the seller settles on, e.g. base, polygon, solana.
- `payment` (string): Base64 X-PAYMENT payload for a single x402 payment.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/io-merona-settlement-index/api#diagnostics

## Score history

- 2026-08-07: 62
- 2026-08-06: 61

## Links

- Remote endpoint: https://api.merona.io/mcp
- Changelog RSS feed: https://verifymcp.io/servers/io-merona-settlement-index/api.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-merona-settlement-index/api.json
- HTML version of this page: https://verifymcp.io/servers/io-merona-settlement-index/api