StealthGuard 402
REMOTE · STEALTHGUARD-402.ONRENDER.COM
Stealth web extraction, Polymarket alpha, and on-chain pre-trade gating via x402 on Base.
Available components
Last scanned (2 hours ago)
Scores higher than 56% of remote servers
Reachable. Last reached 17 Oct 2026.
Category Crypto and Web3
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. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability67
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1021 tokens (~68/item across 15 items; 15 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability check failed: schema churn in the 2 days we've observed: 9 tool removals, 2 breaking changes, 0 auth/transport breaks, 5 additions. See how to fix → Fail
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 15 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 15 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities20
- Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28. See how to fix → Fail
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 17 Oct 26 −1
- Stability: 0.03 → fail ▼ security
- Tool “arxiv_agent_papers” was removed ▼ security
- Tool “base_new_pools” was removed ▼ security
- Tool “crypto_sentiment_pulse” was removed ▼ security
- Tool “github_trending_agents” was removed ▼ security
- Tool “health_and_sample” was removed ▼ security
- Tool “polymarket_macro_fed” was removed ▼ security
- Tool “security_evm_calldata_firewall” was removed ▼ security
- Tool “security_url_threat_check” was removed ▼ security
- Tool “solana_trending_safe” was removed ▼ security
- Tool “base_trending_tokens” rewrote its description, which is the text the model reads security
- Tool “defi_yield_radar” rewrote its description, which is the text the model reads security
- Tool “hackernews_ai_digest” rewrote its description, which is the text the model reads security
- Tool “polymarket_alpha_divergence” rewrote its description, which is the text the model reads security
- Tool “polymarket_crypto_odds” rewrote its description, which is the text the model reads security
- Tool “polymarket_top_whales” rewrote its description, which is the text the model reads security
- Tool “pre_trade_agent_gate” rewrote its description, which is the text the model reads security
- Tool “security_prompt_firewall” rewrote its description, which is the text the model reads security
- Tool “security_x402_endpoint_verifier” rewrote its description, which is the text the model reads security
- Tool “stealth_scrape_and_sanitize” rewrote its description, which is the text the model reads security
- Schema quality: 56 → 68 ▼ functional
- “security_prompt_firewall” made “text” required, so existing callers break ▼ functional
- “security_x402_endpoint_verifier” made “endpoint_url” required, so existing callers break ▼ functional
- Server version: 1.1.0 → 1.2.0 functional
- New tool “alpha_polymarket_whale_orderflow” functional
- New tool “oracle_perp_funding_and_basis” functional
- New tool “research_deep_web_dossier” functional
- New tool “research_topic_news_scanner” functional
- New tool “security_attestation_bundle” functional
- “base_trending_tokens” added an optional parameter “chain” cosmetic
- “defi_yield_radar” added an optional parameter “asset” cosmetic
- “hackernews_ai_digest” added an optional parameter “limit” cosmetic
- “polymarket_crypto_odds” added an optional parameter “asset” cosmetic
- “polymarket_top_whales” added an optional parameter “limit” cosmetic
- “security_prompt_firewall” reworded the description of “text” cosmetic
- “security_x402_endpoint_verifier” reworded the description of “endpoint_url” cosmetic
- 16 Oct 26 +2
- The server changed its declared name: StealthGuard-402 → stealthguard-402 security
- Tool coverage: 73% → 100% ▲ functional
- Stability: unverified → 0.03 ▲ functional
- Tool “arxiv_agent_papers” now declares an output schema ▲ functional
- Tool “base_new_pools” now declares an output schema ▲ functional
- Tool “base_trending_tokens” now declares an output schema ▲ functional
- Tool “crypto_sentiment_pulse” now declares an output schema ▲ functional
- Tool “defi_yield_radar” now declares an output schema ▲ functional
- Tool “github_trending_agents” now declares an output schema ▲ functional
- Tool “hackernews_ai_digest” now declares an output schema ▲ functional
- Tool “health_and_sample” now declares an output schema ▲ functional
- Tool “polymarket_alpha_divergence” now declares an output schema ▲ functional
- Tool “polymarket_crypto_odds” now declares an output schema ▲ functional
- Tool “polymarket_macro_fed” now declares an output schema ▲ functional
- Tool “polymarket_top_whales” now declares an output schema ▲ functional
- Tool “pre_trade_agent_gate” now declares an output schema ▲ functional
- Tool “security_evm_calldata_firewall” now declares an output schema ▲ functional
- Tool “security_prompt_firewall” now declares an output schema ▲ functional
- Tool “security_url_threat_check” now declares an output schema ▲ functional
- Tool “security_x402_endpoint_verifier” now declares an output schema ▲ functional
- Tool “solana_trending_safe” now declares an output schema ▲ functional
- Tool “stealth_scrape_and_sanitize” now declares an output schema ▲ functional
- The server now declares the “prompts” capability functional
- The server now declares the “resources” capability functional
- First check of Tool coverage: 100 functional
- “health_and_sample” reworded the description of “include_samples” cosmetic
- “polymarket_alpha_divergence” reworded the description of “strict_mode” cosmetic
- “pre_trade_agent_gate” reworded the description of “chain” cosmetic
- “pre_trade_agent_gate” reworded the description of “strict_mode” cosmetic
- 15 Oct 26 65
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 17 Oct 2026 · Probed https://stealthguard-402.onrender.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=onrender.com | CN=WE1,O=Google Trust Services,C=US | 21 Sept 2026 | 20 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 6eb1e3fe7d0631ea1337bfa4a321c137 |
| SANs: onrender.com, *.onrender.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of stealthguard-402.onrender.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| onrender.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://stealthguard-402.onrender.com/mcp | Verified | 200 | |
| http (plaintext) | http://stealthguard-402.onrender.com/mcp | HTTPS enforced | 301 | https://stealthguard-402.onrender.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
alpha_polymarket_whale_orderflow ~84
Deep CLOB orderbook imbalance, smart-money wallet tracking, and Limitless/Polymarket cross-venue arbitrage spread matrix. Price: 0.02 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| include_cross_venue | boolean | – | Include cross-venue arbitrage matrix |
| min_order_usd | number | – | Minimum order size in USD |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
base_trending_tokens ~52
Top trending Base DEX pairs pre-screened for honeypots, malicious taxes, and prompt injections. Price: 0.01 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| chain | string | – | Target blockchain network |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
defi_yield_radar ~58
Live top stablecoin and ETH APY yields on Base, pre-sanitized for autonomous AI agent execution. Price: 0.01 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| asset | string | – | Target asset (USDC, ETH) |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
hackernews_ai_digest ~49
Top HackerNews AI and autonomous agent stories converted to clean, injection-free LLM Markdown. Price: 0.01 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Number of stories |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
oracle_perp_funding_and_basis ~70
Cross-exchange BTC/ETH/SOL perpetual funding rate skew, basis spread, and spot-futures arbitrage signals. Price: 0.02 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| assets | array | – | Assets to analyze (e.g. ['BTC', 'ETH', 'SOL']) |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
polymarket_alpha_divergence ~93
Scans Polymarket CLOB orderbooks for volume spikes and smart-money spread divergence, returning CanaryGuard sanitized alpha. Price: 0.02 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Category filter (crypto, politics, fed, ai) |
| limit | integer | – | Max markets to analyze |
| strict_mode | boolean | – | Deterministic prompt-injection sanitization strictness |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
polymarket_crypto_odds ~57
Sanitized BTC, ETH, and SOL Polymarket probability spreads and liquidity depth in basis points. Price: 0.01 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| asset | string | – | Crypto asset (BTC, ETH, SOL) |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
polymarket_top_whales ~57
Top Polymarket whale orderbook imbalances and CLOB skew right now, pre-sanitized with CanaryGuard. Price: 0.01 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max whales to analyze |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
pre_trade_agent_gate ~108
Deterministic TRUST or BLOCK gate combining on-chain Base RPC liquidity and honeypot checks with CanaryGuard injection scrubbing. Price: 0.01 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| chain | string | – | Blockchain ecosystem to audit (base or solana) |
| strict_mode | boolean | – | Deterministic prompt-injection sanitization strictness |
| target_url | string | – | Optional associated project URL |
| token_or_service_address | string | yes | EVM or Solana address |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
research_deep_web_dossier ~60
Multi-source stealth web synthesis + CanaryGuard injection firewall + structured markdown intelligence dossier. Price: 0.02 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| depth | string | – | Research depth |
| topic | string | yes | Research topic or target entity |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
research_topic_news_scanner ~56
Real-time sanitized news, HackerNews, and ArXiv intelligence scanner for any target keyword or protocol. Price: 0.02 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | Target search topic or protocol keyword |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
security_attestation_bundle ~73
Cryptographic prompt-safety + URL threat + token contract verification bundle for autonomous AI agent workflows. Price: 0.02 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| prompt_text | string | yes | Prompt text to attest |
| target_url | string | – | Target URL |
| token_address | string | – | Token contract address |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
security_prompt_firewall ~53
Ultra-fast deterministic prompt-injection and wallet-drainer scrubber for agent context windows. Price: 0.01 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Raw text context to scrub for prompt injections |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
security_x402_endpoint_verifier ~61
Audits target x402 endpoints for authentic payTo wallet, pricing, challenge headers, and schema hijack risks. Price: 0.01 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| endpoint_url | string | yes | Target x402 endpoint URL to audit |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
stealth_scrape_and_sanitize ~90
Bypasses Cloudflare anti-bot via Scrapling, extracts clean DOM to LLM Markdown, and runs CanaryGuard deterministic sanitization. Price: 0.015 USDC on Base.
| Name | Type | Req | Description |
|---|---|---|---|
| render_js | boolean | – | Enable stealth headless browser rendering |
| strict_mode | boolean | – | Deterministic sanitization strictness |
| url | string | yes | Target destination URL |
| Name | Type | Req | Description |
|---|---|---|---|
| content | array | – | Structured text or data content returned to the LLM agent |
| data | object | – | Sanitized domain data payload or verification metrics |
| payment | object | – | x402 protocol payment settlement and settlement receipt details |
| status | string | yes | Execution status (success or error) |
No examples provided.
How do I install the StealthGuard 402 MCP server?
StealthGuard 402 is a hosted endpoint at https://stealthguard-402.onrender.com/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.
remote · stealthguard-402.onrender.com
claude mcp add --transport http ak10082247-max-stealthguard-402 'https://stealthguard-402.onrender.com/mcp'
What is the StealthGuard 402 MCP server?
StealthGuard 402 is an MCP server listed in the public MCP registry as io.github.ak10082247-max/stealthguard-402. Stealth web extraction, Polymarket alpha, and on-chain pre-trade gating via x402 on Base. This page covers its hosted endpoint (https://stealthguard-402.onrender.com/mcp).
Is the StealthGuard 402 MCP server safe to use?
StealthGuard 402 scores 66 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 StealthGuard 402 MCP server expose?
StealthGuard 402 exposes 15 tools: stealth_scrape_and_sanitize, polymarket_alpha_divergence, pre_trade_agent_gate, polymarket_top_whales, polymarket_crypto_odds, and 10 more. Their descriptions and schemas cost roughly 1,021 tokens of context every time the server is loaded.
Does the StealthGuard 402 MCP server require authentication?
No. We connected to StealthGuard 402 without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the StealthGuard 402 MCP server still maintained?
StealthGuard 402 is still listed as active in the MCP registry. We last reached this channel on 17 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.