# Skavio USDC Payment Verification & Proof MCP (remote · www.skavio.eu)

USDC x402 verify/match/PDF/DNS-TLS; authenticated Serper web search, extraction and monitoring.

- Trust score: 64/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- remote · `www.skavio.eu`: 64/100 (this document), [markdown](https://verifymcp.io/servers/eu-skavio-paid-micro-apis/www.md), [page](https://verifymcp.io/servers/eu-skavio-paid-micro-apis/www)

## Channel facts

- Endpoint: `https://www.skavio.eu/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.2`

## 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 2026-10-18.

- **Endpoint Security**: 57/100
  - 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 1 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.
  - 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**: 68/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 2450 tokens (~136/item across 18 items; 18 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 20/100
  - Stability observed for 6 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).
  - 77% of tool parameters carry a description.
- **Tool Safety**: 88/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - 1 of 2 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "usdc_transfer_evidence_pdf" implies "transfer" and declares readOnlyHint instead, contradicting what its own name says it does.
  - An AI judge read all 19 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 Skavio USDC Payment Verification & Proof MCP server?

Skavio USDC Payment Verification & Proof MCP is a hosted endpoint at https://www.skavio.eu/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 eu-skavio-paid-micro-apis 'https://www.skavio.eu/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "eu-skavio-paid-micro-apis": {
      "url": "https://www.skavio.eu/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "eu-skavio-paid-micro-apis": {
      "type": "http",
      "url": "https://www.skavio.eu/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.eu-skavio-paid-micro-apis]
url = "https://www.skavio.eu/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "eu-skavio-paid-micro-apis": {
      "type": "remote",
      "url": "https://www.skavio.eu/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add eu-skavio-paid-micro-apis --url 'https://www.skavio.eu/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  eu-skavio-paid-micro-apis:
    url: "https://www.skavio.eu/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "eu-skavio-paid-micro-apis": {
      "Transport": "http",
      "Url": "https://www.skavio.eu/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add eu-skavio-paid-micro-apis -t streamable-http -u 'https://www.skavio.eu/mcp'
```

### Other

```json
{
  "mcpServers": {
    "eu-skavio-paid-micro-apis": {
      "type": "http",
      "url": "https://www.skavio.eu/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.

### 2026-10-18 (score 64, 0)

- [security] Tool “web_extract” rewrote its description, which is the text the model reads
- [security] Tool “web_fetch” rewrote its description, which is the text the model reads
- [security] Tool “web_monitor” rewrote its description, which is the text the model reads

### 2026-10-17 (score 64, +5)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] The server changed its declared name: Skavio Paid Micro-APIs → Skavio USDC Payment Verification & Proof MCP
- [security] Tool “audio_transcribe” rewrote its description, which is the text the model reads
- [security] Tool “document_ocr” rewrote its description, which is the text the model reads
- [security] Tool “domain_dns_tls_audit” rewrote its description, which is the text the model reads
- [security] Tool “invoice_extract” rewrote its description, which is the text the model reads
- [security] Tool “pdf_merge” rewrote its description, which is the text the model reads
- [security] Tool “pdf_split” rewrote its description, which is the text the model reads
- [security] Tool “pdf_to_text” rewrote its description, which is the text the model reads
- [security] Tool “skavio_agent_job_result” rewrote its description, which is the text the model reads
- [security] Tool “skavio_agent_job_status” rewrote its description, which is the text the model reads
- [security] Tool “skavio_agent_wallet” rewrote its description, which is the text the model reads
- [security] Tool “skavio_catalog” rewrote its description, which is the text the model reads
- [security] Tool “skavio_launch_status” rewrote its description, which is the text the model reads
- [security] Tool “web_extract” rewrote its description, which is the text the model reads
- [security] Tool “web_fetch” rewrote its description, which is the text the model reads
- [security] Tool “web_monitor” rewrote its description, which is the text the model reads
- [functional regression] Schema quality: pass → fail
- [functional improvement] Tool coverage: 0% → 77%
- [functional improvement] Destructive annotations: 0% → 50%
- [functional] Schema quality: fair → good
- [cosmetic] “audio_transcribe” reworded the description of “idempotency_key”
- [cosmetic] “audio_transcribe” reworded the description of “payment_mode”
- [cosmetic] “document_ocr” reworded the description of “idempotency_key”
- [cosmetic] “document_ocr” reworded the description of “payment_mode”
- [cosmetic] “domain_dns_tls_audit” reworded the description of “domain”
- [cosmetic] “invoice_extract” reworded the description of “idempotency_key”
- [cosmetic] “invoice_extract” reworded the description of “payment_mode”
- [cosmetic] “match_native_usdc_payment” reworded the description of “amount”
- [cosmetic] “match_native_usdc_payment” reworded the description of “network”
- [cosmetic] “match_native_usdc_payment” reworded the description of “recipient”
- [cosmetic] “match_native_usdc_payment” reworded the description of “tx_hash”
- [cosmetic] “pdf_merge” reworded the description of “idempotency_key”
- [cosmetic] “pdf_merge” reworded the description of “payment_mode”
- [cosmetic] “pdf_split” reworded the description of “idempotency_key”
- [cosmetic] “pdf_split” reworded the description of “payment_mode”
- [cosmetic] “pdf_to_text” reworded the description of “idempotency_key”
- [cosmetic] “pdf_to_text” reworded the description of “payment_mode”
- [cosmetic] “skavio_agent_job_result” reworded the description of “idempotency_key”
- [cosmetic] “skavio_agent_job_result” reworded the description of “result_id”
- [cosmetic] “skavio_agent_job_status” reworded the description of “idempotency_key”
- [cosmetic] “usdc_transfer_evidence_pdf” reworded the description of “network”
- [cosmetic] “usdc_transfer_evidence_pdf” reworded the description of “tx_hash”
- [cosmetic] “verify_native_usdc” reworded the description of “network”
- [cosmetic] “verify_native_usdc” reworded the description of “tx_hash”
- [cosmetic] “web_extract” reworded the description of “idempotency_key”
- [cosmetic] “web_extract” reworded the description of “payment_mode”
- [cosmetic] “web_fetch” reworded the description of “idempotency_key”
- [cosmetic] “web_fetch” reworded the description of “payment_mode”
- [cosmetic] “web_monitor” reworded the description of “idempotency_key”
- [cosmetic] “web_monitor” reworded the description of “payment_mode”
- [cosmetic] Tool “audio_transcribe” changed its title: Audio transcribe
- [cosmetic] Tool “document_ocr” changed its title: Document ocr
- [cosmetic] Tool “domain_dns_tls_audit” changed its title: Public domain DNS and TLS audit
- [cosmetic] Tool “invoice_extract” changed its title: Invoice extract
- [cosmetic] Tool “match_native_usdc_payment” changed its title: Match exact USDC recipient and amount
- [cosmetic] Tool “pdf_merge” changed its title: Pdf merge
- [cosmetic] Tool “pdf_split” changed its title: Pdf split
- [cosmetic] Tool “pdf_to_text” changed its title: Pdf to text
- [cosmetic] Tool “skavio_agent_job_result” changed its title: Agent job result
- [cosmetic] Tool “skavio_agent_job_status” changed its title: Agent job status
- [cosmetic] Tool “skavio_agent_wallet” changed its title: Agent wallet
- [cosmetic] Tool “skavio_catalog” changed its title: Catalog
- [cosmetic] Tool “skavio_launch_status” changed its title: Launch status
- [cosmetic] Tool “usdc_transfer_evidence_pdf” changed its title: USDC blockchain transfer evidence PDF
- [cosmetic] Tool “verify_native_usdc” changed its title: Verify native USDC transaction
- [cosmetic] Tool “web_extract” changed its title: Web extract
- [cosmetic] Tool “web_fetch” changed its title: Web fetch
- [cosmetic] Tool “web_monitor” changed its title: Web monitor

### 2026-10-15 (score 59, +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.

### 2026-10-14 (score 58, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional regression] Schema quality: 67 → 81
- [functional] New tool “audio_transcribe”
- [functional] New tool “document_ocr”
- [functional] New tool “invoice_extract”
- [functional] New tool “pdf_merge”
- [functional] New tool “pdf_split”
- [functional] New tool “pdf_to_text”
- [functional] New tool “skavio_agent_job_result”
- [functional] New tool “skavio_agent_job_status”
- [functional] New tool “skavio_agent_wallet”
- [functional] New tool “web_extract”
- [functional] New tool “web_fetch”
- [functional] New tool “web_monitor”

### 2026-10-13 (score 58, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-12 (score 58)

First indexed and scored.

## MCP tools (18)

### `skavio_launch_status` (~47 tokens)

Launch status

Free production availability status, including explicitly disabled processing functions. No execution or charge. Returns enabled/admission flags and unverified funded-execution/margin status; activation is not funded acceptance.

### `skavio_catalog` (~56 tokens)

Catalog

Free discovery of Skavio paid MCP tools, prices, and networks. No access to customer data. Returns four paid prices in USDC, inspection networks, separate processing authentication and activation limits. No call submits a job or spends funds.

### `verify_native_usdc` (~107 tokens)

Verify native USDC transaction

Verify a completed native Circle USDC transfer on Base, Polygon, Arbitrum, Optimism, Ethereum, Avalanche or Solana. $0.02 USDC on Base via x402.

Input parameters:

- `network` (string): Blockchain inspected; the separate API payment always settles native USDC on Base.
- `tx_hash` (string, required): Public transaction to inspect: 0x plus 64 hex characters for EVM; base58 64-byte Solana signature. Must match network.

### `match_native_usdc_payment` (~157 tokens)

Match exact USDC recipient and amount

Match EXACT final native USDC transfer by public recipient and six-decimal amount on any supported chain; includes strict finality. $0.03 USDC on Base via x402.

Input parameters:

- `amount` (string, required): Positive exact USDC decimal string, at most six decimal places. Never a floating point number.
- `network` (string): Blockchain inspected; the separate API payment always settles native USDC on Base.
- `recipient` (string, required): Expected recipient: EVM 0x address or Solana owner wallet, not a token account.
- `tx_hash` (string, required): Public transaction to inspect: 0x plus 64 hex characters for EVM; base58 64-byte Solana signature. Must match network.

### `usdc_transfer_evidence_pdf` (~104 tokens)

USDC blockchain transfer evidence PDF

Return base64-encoded PDF containing public blockchain evidence for a native Circle USDC transfer. NOT an invoice. $0.05 USDC on Base via x402.

Input parameters:

- `network` (string): Blockchain inspected; the separate API payment always settles native USDC on Base.
- `tx_hash` (string, required): Public transaction to inspect: 0x plus 64 hex characters for EVM; base58 64-byte Solana signature. Must match network.

### `domain_dns_tls_audit` (~137 tokens)

Public domain DNS and TLS audit

Bounded DNS and TLS certificate audit for a single PUBLIC business hostname. Checks public IPs, TLS validity, TLS version and days until certificate expiry. No page scraping, no user-provided URLs, no private IP probing. $0.05 USDC on Base via x402. Input example: example.com. Performs bounded public DNS resolution and one pinned TLS handshake on port 443, no HTTP request. Reports tls_valid, public IPs and certificate details; not a vulnerability scan or trust certification.

Input parameters:

- `domain` (string, required): Public DNS hostname, for example example.com; no URL, IP, credentials or private host.

### `web_fetch` (~162 tokens)

Web fetch

Search public Google results with Serper or securely fetch one public HTTPS page. Optional DeepSeek structured diagnostic. Separate authenticated Agent Tools relay: requires your own company Bearer API key. URL and query are mutually exclusive. Prepaid uses the shared company credit wallet; x402 produces a workload-specific payment quote. Preserve the same idempotency key, arguments and payment mode on retry; admission is not delivery. Poll job status and fetch result with SHA256 verification.

Input parameters:

- `arguments` (object, required)
- `idempotency_key` (string, required): Stable job key; retry exactly the same inputs and payment mode with this key to recover safely.
- `payment_mode` (string): x402 returns a workload-specific quote; prepaid spends your existing shared company credits. No anonymous execution.

### `web_extract` (~165 tokens)

Web extract

Extract one public HTTPS page or search Google then extract 1–5 actual source pages. Optional DeepSeek structured diagnostic. Separate authenticated Agent Tools relay: requires your own company Bearer API key. URL and query are mutually exclusive. Prepaid uses the shared company credit wallet; x402 produces a workload-specific payment quote. Preserve the same idempotency key, arguments and payment mode on retry; admission is not delivery. Poll job status and fetch result with SHA256 verification.

Input parameters:

- `arguments` (object, required)
- `idempotency_key` (string, required): Stable job key; retry exactly the same inputs and payment mode with this key to recover safely.
- `payment_mode` (string): x402 returns a workload-specific quote; prepaid spends your existing shared company credits. No anonymous execution.

### `web_monitor` (~161 tokens)

Web monitor

Compare an HTTPS page or Serper search snapshot by SHA-256. Optional DeepSeek structured diagnostic. Separate authenticated Agent Tools relay: requires your own company Bearer API key. URL and query are mutually exclusive. Prepaid uses the shared company credit wallet; x402 produces a workload-specific payment quote. Preserve the same idempotency key, arguments and payment mode on retry; admission is not delivery. Poll job status and fetch result with SHA256 verification.

Input parameters:

- `arguments` (object, required)
- `idempotency_key` (string, required): Stable job key; retry exactly the same inputs and payment mode with this key to recover safely.
- `payment_mode` (string): x402 returns a workload-specific quote; prepaid spends your existing shared company credits. No anonymous execution.

### `pdf_to_text` (~161 tokens)

Pdf to text

Extract selectable text from a PDF using the audited Skavio engine. Separate authenticated processing relay: requires your Agent Tools Bearer API key and an available catalog operation. Default x402 returns a workload quote; prepaid spends shared company credits. Use the same idempotency_key and inputs on retries. An admitted job is not delivered; poll skavio_agent_job_status then skavio_agent_job_result and verify SHA256. No execution when backend admission is disabled.

Input parameters:

- `arguments` (object, required)
- `idempotency_key` (string, required): Stable job key; retry exactly the same inputs and payment mode with this key to recover safely.
- `payment_mode` (string): x402 returns a workload-specific quote; prepaid spends your existing shared company credits. No anonymous execution.

### `document_ocr` (~156 tokens)

Document ocr

OCR a scanned document into searchable text. Separate authenticated processing relay: requires your Agent Tools Bearer API key and an available catalog operation. Default x402 returns a workload quote; prepaid spends shared company credits. Use the same idempotency_key and inputs on retries. An admitted job is not delivered; poll skavio_agent_job_status then skavio_agent_job_result and verify SHA256. No execution when backend admission is disabled.

Input parameters:

- `arguments` (object, required)
- `idempotency_key` (string, required): Stable job key; retry exactly the same inputs and payment mode with this key to recover safely.
- `payment_mode` (string): x402 returns a workload-specific quote; prepaid spends your existing shared company credits. No anonymous execution.

### `invoice_extract` (~164 tokens)

Invoice extract

Extract structured invoice fields from one document, priced per page with the extraction call included. Separate authenticated processing relay: requires your Agent Tools Bearer API key and an available catalog operation. Default x402 returns a workload quote; prepaid spends shared company credits. Use the same idempotency_key and inputs on retries. An admitted job is not delivered; poll skavio_agent_job_status then skavio_agent_job_result and verify SHA256. No execution when backend admission is disabled.

Input parameters:

- `arguments` (object, required)
- `idempotency_key` (string, required): Stable job key; retry exactly the same inputs and payment mode with this key to recover safely.
- `payment_mode` (string): x402 returns a workload-specific quote; prepaid spends your existing shared company credits. No anonymous execution.

### `audio_transcribe` (~157 tokens)

Audio transcribe

Transcribe bounded audio or video to text. Separate authenticated processing relay: requires your Agent Tools Bearer API key and an available catalog operation. Default x402 returns a workload quote; prepaid spends shared company credits. Use the same idempotency_key and inputs on retries. An admitted job is not delivered; poll skavio_agent_job_status then skavio_agent_job_result and verify SHA256. No execution when backend admission is disabled.

Input parameters:

- `arguments` (object, required)
- `idempotency_key` (string, required): Stable job key; retry exactly the same inputs and payment mode with this key to recover safely.
- `payment_mode` (string): x402 returns a workload-specific quote; prepaid spends your existing shared company credits. No anonymous execution.

### `pdf_split` (~157 tokens)

Pdf split

Split a PDF into a selected set of pages. Separate authenticated processing relay: requires your Agent Tools Bearer API key and an available catalog operation. Default x402 returns a workload quote; prepaid spends shared company credits. Use the same idempotency_key and inputs on retries. An admitted job is not delivered; poll skavio_agent_job_status then skavio_agent_job_result and verify SHA256. No execution when backend admission is disabled.

Input parameters:

- `arguments` (object, required)
- `idempotency_key` (string, required): Stable job key; retry exactly the same inputs and payment mode with this key to recover safely.
- `payment_mode` (string): x402 returns a workload-specific quote; prepaid spends your existing shared company credits. No anonymous execution.

### `pdf_merge` (~156 tokens)

Pdf merge

Merge two to five PDFs into one document. Separate authenticated processing relay: requires your Agent Tools Bearer API key and an available catalog operation. Default x402 returns a workload quote; prepaid spends shared company credits. Use the same idempotency_key and inputs on retries. An admitted job is not delivered; poll skavio_agent_job_status then skavio_agent_job_result and verify SHA256. No execution when backend admission is disabled.

Input parameters:

- `arguments` (object, required)
- `idempotency_key` (string, required): Stable job key; retry exactly the same inputs and payment mode with this key to recover safely.
- `payment_mode` (string): x402 returns a workload-specific quote; prepaid spends your existing shared company credits. No anonymous execution.

### `skavio_agent_job_status` (~72 tokens)

Agent job status

Read your owned processing job and result manifest; no new payment. Input is your original idempotency key. Returns state, reservation, availability and any owned result IDs; only available results may be downloaded.

Input parameters:

- `idempotency_key` (string, required): Your original processing job key; same authenticated company only.

### `skavio_agent_job_result` (~103 tokens)

Agent job result

Download your owned completed processing result as base64 with SHA256; no new payment. Input result_id must come from your completed owned manifest. Returns data_base64, sha256 and delivered=true, or an explicit error; independently verify the checksum.

Input parameters:

- `idempotency_key` (string, required): Your original processing job key; same authenticated company only.
- `result_id` (string, required): A result_id from the owned completed job status manifest. Verify returned SHA256.

### `skavio_agent_wallet` (~53 tokens)

Agent wallet

Read your authoritative shared credit wallet; no new payment. Returns balance_credits, available_credits, reserved_credits and USD display strings with ledger_source. It does not fund, reserve, move or spend credits.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/eu-skavio-paid-micro-apis/www#diagnostics

## Score history

- 2026-10-18: 64
- 2026-10-17: 64
- 2026-10-16: 59
- 2026-10-15: 59
- 2026-10-14: 58
- 2026-10-13: 58
- 2026-10-12: 58

## Common questions

### What is the Skavio USDC Payment Verification & Proof MCP server?

Skavio USDC Payment Verification & Proof MCP is listed in the public MCP registry as eu.skavio/paid-micro-apis. USDC x402 verify/match/PDF/DNS-TLS; authenticated Serper web search, extraction and monitoring. This page covers its hosted endpoint (https://www.skavio.eu/mcp).

### Is the Skavio USDC Payment Verification & Proof MCP server safe to use?

Skavio USDC Payment Verification & Proof MCP scores 64 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 Skavio USDC Payment Verification & Proof MCP server expose?

Skavio USDC Payment Verification & Proof MCP exposes 18 tools: skavio_launch_status, skavio_catalog, verify_native_usdc, match_native_usdc_payment, usdc_transfer_evidence_pdf, and 13 more. Their descriptions and schemas cost roughly 2,275 tokens of context every time the server is loaded.

### Does the Skavio USDC Payment Verification & Proof MCP server require authentication?

No. We connected to Skavio USDC Payment Verification & Proof MCP without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Skavio USDC Payment Verification & Proof MCP server still maintained?

Skavio USDC Payment Verification & Proof MCP is still listed as active in the MCP registry. We last reached this channel on 18 October 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://www.skavio.eu/mcp
- Repository: https://github.com/skavio-eu/skavio-agent-tools
- Website: https://www.skavio.eu/x402/
- Changelog RSS feed: https://verifymcp.io/servers/eu-skavio-paid-micro-apis/www.xml
- Changelog JSON feed: https://verifymcp.io/servers/eu-skavio-paid-micro-apis/www.json
- HTML version of this page: https://verifymcp.io/servers/eu-skavio-paid-micro-apis/www