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---
page: htroot/BlacklistTest_p.html
help: help/BlacklistTest_p.md
title: Blacklist Test
package: blacklist-security-access
access: admin
kind: admin-page
backend_java: source/net/yacy/htroot/BlacklistTest_p.java
---
# Blacklist Test
## Purpose
Blacklist Test checks whether a URL matches the active blacklist rules.
Use it before blaming the crawler or search page for a missing result.
## What You Can Do Here
- Blacklist Test checks whether a URL matches the active blacklist rules.
- Test a concrete URL, request, user, or pattern before applying broad policy.
- Keep rules narrow enough that they block the intended problem without hiding useful content.
## Page Architecture
Security and blacklist pages turn names, patterns, credentials, or request properties into allow/block decisions. The architecture is rule-oriented: define the rule, test the rule, then apply it to crawling, search, or access.
| Control | Meaning | Values or examples |
| --- | --- | --- |
## Correct Use
Test with a concrete example. A blacklist, regular expression, rate limit, cookie rule, or access rule is only understandable when checked against a real URL or request. Prefer narrow patterns and document the reason for broad rules.
## Access And Safety
Administrator access is required. YaCy protects `_p` pages as administration pages.
Protected related endpoint(s): `/BlacklistTest_p.html`.
## Automation And API
Page backend: `source/net/yacy/htroot/BlacklistTest_p.java`.
| Endpoint | Method | Access | Backend |
| --- | --- | --- | --- |
| `/BlacklistTest_p.html` | `POST` | admin | `source/net/yacy/htroot/BlacklistTest_p.java` |
### Parameter Guide
The table explains values that an agent or script must set deliberately. Parameters not relevant to a task should be omitted or left at the page default. Low-level generated parameters are omitted when they are only meaningful inside the rendered YaCy form.
| Parameter | Meaning and valid values | Care |
| --- | --- | --- |
Example request shape:
```http
POST /BlacklistTest_p.html
Content-Type: application/x-www-form-urlencoded
testurl=...&testList=...
```
## What To Expect
Expect a rule list, match test, access record, cookie view, or confirmation. The real proof is behavioral: the same URL, request, or user should now be accepted, blocked, limited, or displayed as intended.
## Related Pages
- Related security work is usually reached through blacklist administration, blacklist testing, cookie monitors, robots data, or access-rate settings.
|
