# SPORE x402 Attestation (remote · spore-x402.worker.beacon.host)

Signed x402 attestations and bounty-packet preflight checks, paid per call in USDC on Base.

- Trust score: 65/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `spore-x402.worker.beacon.host`: 65/100 (this document), [markdown](https://verifymcp.io/servers/host-beacon-worker-spore-x402-x402-attestation/spore-x402.md), [page](https://verifymcp.io/servers/host-beacon-worker-spore-x402-x402-attestation/spore-x402)

## Channel facts

- Endpoint: `https://spore-x402.worker.beacon.host/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `2.1.0`

## 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 2026-11-05.

- **Endpoint Security**: 46/100
  - 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 6 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 check failed: the endpoint is reachable over plaintext HTTP.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - 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**: 69/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 461 tokens (~76/item across 6 items; 6 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 50/100
  - Stability observed for 15 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 92/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 75% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the SPORE x402 Attestation MCP server?

SPORE x402 Attestation is a hosted endpoint at https://spore-x402.worker.beacon.host/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http host-beacon-worker-spore-x402-x402-attestation 'https://spore-x402.worker.beacon.host/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "host-beacon-worker-spore-x402-x402-attestation": {
      "url": "https://spore-x402.worker.beacon.host/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "host-beacon-worker-spore-x402-x402-attestation": {
      "type": "http",
      "url": "https://spore-x402.worker.beacon.host/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.host-beacon-worker-spore-x402-x402-attestation]
url = "https://spore-x402.worker.beacon.host/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "host-beacon-worker-spore-x402-x402-attestation": {
      "type": "remote",
      "url": "https://spore-x402.worker.beacon.host/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add host-beacon-worker-spore-x402-x402-attestation --url 'https://spore-x402.worker.beacon.host/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  host-beacon-worker-spore-x402-x402-attestation:
    url: "https://spore-x402.worker.beacon.host/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "host-beacon-worker-spore-x402-x402-attestation": {
      "Transport": "http",
      "Url": "https://spore-x402.worker.beacon.host/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add host-beacon-worker-spore-x402-x402-attestation -t streamable-http -u 'https://spore-x402.worker.beacon.host/mcp'
```

### Other

```json
{
  "mcpServers": {
    "host-beacon-worker-spore-x402-x402-attestation": {
      "type": "http",
      "url": "https://spore-x402.worker.beacon.host/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.

### 2026-11-04 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 63, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 62, +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.

### 2026-10-26 (score 61, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-22 (score 59, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-21 (score 58)

First indexed and scored.

## MCP tools (6)

### `x402_attest` (~49 tokens)

Signed x402-v2 attestation of a subject/delivery packet: artifact URLs live, sha256 digests match the bound refs, report coherent with evidence.

Input parameters:

- `subject` (string, required)

### `x402_preflight` (~45 tokens)

Preflight-verify a bounty delivery packet before claim/payout (reachability + digest binding + report/evidence coherence) -> signed verdict.

Input parameters:

- `packet` (object, required)

### `approval-check` (~108 tokens)

Check a token approval before signing it: reads the ERC-20 allowance (owner -> spender) live on Base and returns the raw allowance, an unlimited-approval flag and a risk verdict. Read-only, no keys, no transaction.

Input parameters:

- `owner` (string, required): ERC-20 token owner address (0x + 40 hex).
- `spender` (string, required): Spender address whose allowance is checked.
- `token` (string): ERC-20 token address. Defaults to USDC on Base.

### `dns-preflight` (~71 tokens)

DNS MX TXT A records domain lookup with an email-deliverability verdict: A records, MX hosts, SPF (v=spf1) and DMARC policy, CAA, plus a signed ok/warn/fail verdict.

Input parameters:

- `domain` (string, required): Domain to check (e.g. example.com).

### `base-wallet-lens` (~64 tokens)

Base wallet balances USDC ERC20 portfolio snapshot: live USDC / WETH / DAI balances, ETH balance, nonce and tx count for any Base address. Read-only.

Input parameters:

- `address` (string, required): Base address to read (0x + 40 hex).

### `endpoint-check` (~124 tokens)

Check an x402 endpoint before paying it: fetch the unpaid 402 challenge of any x402 URL and verify it is payable and safe - HTTP 402, a parseable x402 v1/v2 challenge, network, asset, payTo, amount, whether the advertised resource URL is the URL you actually called, manifest consistency (/.well-known/x402.json), header-size overflow risk for Node clients, and a signed pay / caution / avoid verdict. Read-only: we never send a payment.

Input parameters:

- `url` (string, required): x402 URL to check before paying it.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/host-beacon-worker-spore-x402-x402-attestation/spore-x402#diagnostics

## Score history

- 2026-11-05: 65
- 2026-11-04: 65
- 2026-11-03: 64
- 2026-11-02: 64
- 2026-11-01: 63
- 2026-10-31: 63
- 2026-10-30: 62
- 2026-10-29: 62
- 2026-10-28: 61
- 2026-10-27: 61
- 2026-10-26: 61
- 2026-10-25: 60
- 2026-10-24: 60
- 2026-10-23: 59
- 2026-10-22: 59
- 2026-10-21: 58

## Common questions

### What is the SPORE x402 Attestation MCP server?

SPORE x402 Attestation is an MCP server listed in the public MCP registry as host.beacon.worker.spore-x402/x402-attestation. Signed x402 attestations and bounty-packet preflight checks, paid per call in USDC on Base. This page covers its hosted endpoint (https://spore-x402.worker.beacon.host/mcp).

### Is the SPORE x402 Attestation MCP server safe to use?

SPORE x402 Attestation scores 65 out of 100 on VerifyMCP. 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 SPORE x402 Attestation MCP server expose?

SPORE x402 Attestation exposes 6 tools: x402_attest, x402_preflight, approval-check, dns-preflight, base-wallet-lens, endpoint-check. Their descriptions and schemas cost roughly 461 tokens of context every time the server is loaded.

### Does the SPORE x402 Attestation MCP server require authentication?

No. We connected to SPORE x402 Attestation without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the SPORE x402 Attestation MCP server still maintained?

SPORE x402 Attestation is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://spore-x402.worker.beacon.host/mcp
- Website: https://spore-x402.worker.beacon.host/.well-known/mcp.json?ref=spore
- Changelog RSS feed: https://verifymcp.io/servers/host-beacon-worker-spore-x402-x402-attestation/spore-x402.xml
- Changelog JSON feed: https://verifymcp.io/servers/host-beacon-worker-spore-x402-x402-attestation/spore-x402.json
- HTML version of this page: https://verifymcp.io/servers/host-beacon-worker-spore-x402-x402-attestation/spore-x402