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zebbern

Webhook.site MCP Server

by zebbern

generate_ssrf_payload

Generate unique, traceable URLs for SSRF testing. Inject into targets to detect blind Server-Side Request Forgery vulnerabilities.

Instructions

Generate SSRF (Server-Side Request Forgery) test payloads for bug bounty testing. Creates unique identifiable URLs that can be injected into targets to detect blind SSRF vulnerabilities.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
identifierNoCustom identifier to include in payload (e.g., 'param1', 'header-injection')
include_ipNoInclude IP-based payloads to bypass domain filters (default: true)
include_dnsNoInclude DNS-based payload for blind SSRF detection (default: true)
webhook_tokenYesThe webhook token (UUID) from webhook.site
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description must cover behavioral traits. It only mentions 'unique identifiable URLs' but doesn't disclose output format, number of payloads, network calls, or rate limits. Minimal transparency for a tool with no annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two succinct sentences with no wasted words. The purpose and output are front-loaded, providing immediate clarity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's use in security testing and the presence of sibling webhook tools, the description should explain how payloads integrate with webhooks or how to interpret results. It lacks detail on payload format, usage tips, or expected output, making it incomplete for practical use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description does not add any parameter-specific context beyond the schema; it relies entirely on the schema for parameter meaning.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it generates SSRF test payloads for bug bounty testing, specifying verb (generate) and resource (SSRF payloads). It distinguishes itself from sibling tools like generate_canary_token and generate_xss_callback by focusing on blind SSRF detection.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for bug bounty testing and blind SSRF detection, but does not explicitly state when not to use or provide alternatives. No guidance on prerequisites or comparison with sibling tools.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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