PreClick — An MCP-native URL preflight scanning service for autonomous agents.
REMOTE · PRECLICK.AI · SCANNED SEP 22
PreClick scans links for threats and confirms intent match with high accuracy before agents click.
Available components
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 Security63
- 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 enforcement could not be verified: the plaintext port answered with HTTP 521, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- 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 Usability84
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 715 tokens (~119/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
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
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the PreClick — An MCP-native URL preflight scanning service… server?
PreClick — An MCP-native URL preflight scanning service… is a hosted endpoint at https://preclick.ai/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 · preclick.ai
claude mcp add --transport http ai-preclick-preclick-mcp 'https://preclick.ai/mcp'
{
"mcpServers": {
"ai-preclick-preclick-mcp": {
"url": "https://preclick.ai/mcp"
}
}
} {
"servers": {
"ai-preclick-preclick-mcp": {
"type": "http",
"url": "https://preclick.ai/mcp"
}
}
} [mcp_servers.ai-preclick-preclick-mcp] url = "https://preclick.ai/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"ai-preclick-preclick-mcp": {
"type": "remote",
"url": "https://preclick.ai/mcp",
"enabled": true
}
}
} openclaw mcp add ai-preclick-preclick-mcp --url 'https://preclick.ai/mcp' --transport streamable-http
mcp_servers:
ai-preclick-preclick-mcp:
url: "https://preclick.ai/mcp" {
"McpServers": {
"ai-preclick-preclick-mcp": {
"Transport": "http",
"Url": "https://preclick.ai/mcp"
}
}
} assistant mcp add ai-preclick-preclick-mcp -t streamable-http -u 'https://preclick.ai/mcp'
{
"mcpServers": {
"ai-preclick-preclick-mcp": {
"type": "http",
"url": "https://preclick.ai/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 21 Sept 26 0
- HSTS header: unverified → fail ▼ security
- Authorization: unverified → partial ▲ security
- Injection markers: unverified → pass ▲ security
- Stability: unverified → pass ▲ security
- Transport: fail → pass ▲ security
- MCP protocol: unverified → fail ▼ functional
- Endpoint reachability: unreachable → reachable ▲ functional
- Tool coverage: unverified → 100 ▲ functional
- 20 Sept 26 0
- Endpoint reachability: reachable → unreachable ▼ security
- HSTS header: fail → unverified ▼ security
- Stability: pass → unverified ▼ security
- Authorization: partial → unverified ▼ security
- Tool safety: pass → unverified ▼ security
- Transport: pass → fail ▼ security
- Capabilities: fail → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
- 26 Aug 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 6 Aug 26 0
- Authorization: unverified → partial ▲ security
- Schema quality: 107 → 119 ▼ functional
- Schema quality: unverified → fail ▼ functional
- Tool coverage: unverified → 100 ▲ functional
- First check of Tool coverage: 100 functional
- Schema quality: fair → good functional
- New tool “url_scanner_async_scan” functional
- New tool “url_scanner_async_scan_with_intent” functional
- New tool “url_scanner_async_task_result” functional
- New tool “url_scanner_async_task_status” functional
- New tool “url_scanner_scan” functional
- New tool “url_scanner_scan_with_intent” functional
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
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 22 Sept 2026 · Probed https://preclick.ai/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=preclick.ai | CN=WE1,O=Google Trust Services,C=US | 9 Aug 2026 | 7 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | d078033551a0c36013ce19a03fbdb13b |
| SANs: preclick.ai, *.preclick.ai | ||||||
| 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 preclick.ai. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| ai. | present | 3799 | 8 | Verified |
| preclick.ai. | 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://preclick.ai/mcp | Verified | 200 | |
| http (plaintext) | http://preclick.ai/mcp | Inconclusive | 521 |
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 →
url_scanner_async_scan ~93
Submit a URL for asynchronous security analysis. Returns immediately with a task_id. Poll with url_scanner_async_task_status to check progress, then url_scanner_async_task_result to get the scan result. Async counterpart of url_scanner_scan for clients without native MCP Tasks support.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | The URL to analyze. Must be HTTP or HTTPS. If no scheme provided, https:// is assumed. |
No output schema declared.
No examples provided.
url_scanner_async_scan_with_intent ~123
Submit a URL with optional user intent for asynchronous security analysis. Returns immediately with a task_id. Poll with url_scanner_async_task_status to check progress, then url_scanner_async_task_result to get the scan result. Async counterpart of url_scanner_scan_with_intent for clients without native MCP Tasks support.
| Name | Type | Req | Description |
|---|---|---|---|
| intent | string|null | – | Optional user intent for visiting the URL. Recommended for additional context. |
| url | string | yes | The URL to analyze. Must be HTTP or HTTPS. If no scheme provided, https:// is assumed. |
No output schema declared.
No examples provided.
url_scanner_async_task_result ~79
Retrieve the result of an asynchronous scan task. If completed, returns the full scan result (risk_score, confidence, agent_access_directive, etc.). If still running, returns status with retry_after_ms — call again after that interval. Non-blocking.
| Name | Type | Req | Description |
|---|---|---|---|
| task_id | string | yes | The task ID to retrieve the result for. |
No output schema declared.
No examples provided.
url_scanner_async_task_status ~72
Check the status of an asynchronous scan task. Returns the current task status using native MCP task semantics (working, completed, failed, cancelled) without blocking. Use url_scanner_async_task_result to retrieve the result once completed.
| Name | Type | Req | Description |
|---|---|---|---|
| task_id | string | yes | The task ID to check status for. |
No output schema declared.
No examples provided.
url_scanner_scan ~115
Analyze a URL for security threats (synchronous, blocks until complete or timeout). Returns risk score, confidence, agent access guidance, and intent_alignment (always not_provided for this tool; use url_scanner_scan_with_intent for intent context). For long-running scans, prefer url_scanner_async_scan which returns immediately with a task_id for polling via url_scanner_async_task_result.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | The URL to analyze. Must be HTTP or HTTPS. If no scheme provided, https:// is assumed. |
No output schema declared.
No examples provided.
url_scanner_scan_with_intent ~126
Analyze a URL for security threats with optional user intent context (synchronous, blocks until complete or timeout). Returns risk score, confidence, agent access guidance, and intent_alignment. For long-running scans, prefer url_scanner_async_scan_with_intent which returns immediately with a task_id for polling via url_scanner_async_task_result.
| Name | Type | Req | Description |
|---|---|---|---|
| intent | string|null | – | Optional user intent for visiting the URL. Recommended for additional context. |
| url | string | yes | The URL to analyze. Must be HTTP or HTTPS. If no scheme provided, https:// is assumed. |
No output schema declared.
No examples provided.
What is the PreClick — An MCP-native URL preflight scanning service… server?
PreClick — An MCP-native URL preflight scanning service… is listed in the public MCP registry as ai.preclick/preclick-mcp. PreClick scans links for threats and confirms intent match with high accuracy before agents click. This page covers its hosted endpoint (https://preclick.ai/mcp).
Is the PreClick — An MCP-native URL preflight scanning service… server safe to use?
PreClick — An MCP-native URL preflight scanning service… scores 81 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 PreClick — An MCP-native URL preflight scanning service… server expose?
PreClick — An MCP-native URL preflight scanning service… exposes 6 tools: url_scanner_async_scan, url_scanner_async_scan_with_intent, url_scanner_async_task_result, url_scanner_async_task_status, url_scanner_scan, url_scanner_scan_with_intent. Their descriptions and schemas cost roughly 608 tokens of context every time the server is loaded.
Does the PreClick — An MCP-native URL preflight scanning service… server require authentication?
No. We connected to PreClick — An MCP-native URL preflight scanning service… without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the PreClick — An MCP-native URL preflight scanning service… server still maintained?
PreClick — An MCP-native URL preflight scanning service… is still listed as active in the MCP registry. We last reached this channel on 22 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.