getSend a GET request to httpbin.org and receive back the echoed request: query parameters (query object), custom headers, origin IP, and User-Agent. Use for HTTP debugging.
| Name | Required | Description | Default |
|---|---|---|---|
| query | No | ||
| headers | No |
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Changes observed during successful MCP inspections.
Input schema / examplesAdded value: +[
+ {
+ "headers": {
+ "X-Custom-Header": "value"
+ },
+ "query": {
+ "limit": 10,
+ "search": "httpbin"
+ }
+ },
+ {
+ "query": {
+ "page": 1
+ }
+ }
+]Output schema / (root)Previous value: -nullNew value: +{
+ "description": "Response from httpbin GET endpoint",
+ "type": "object"
+}Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Description adds that the tool echoes the request, including query parameters, headers, origin IP, and User-Agent. Annotations already declare readOnlyHint and idempotentHint, so no contradictions. The description adds some behavioral context but doesn't discuss error handling or limits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, front-loaded with action and return info, followed by use case. No unnecessary words or redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity and the presence of an output schema, the description covers the purpose and return data well. Could be more explicit about the output format, but overall sufficient for debugging.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, and the description only repeats parameter names ('query object', 'custom headers') without detailing what properties they accept or their formats. The examples in the schema provide some context, but the description itself adds minimal semantic value.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states the tool sends a GET request to httpbin.org and returns echoed request data, specifying return fields. However, it does not explicitly differentiate from sibling tools like 'post', though the verb 'GET' implies the method.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Says 'Use for HTTP debugging', which provides context but no explicit when-not-to-use or alternative tools. The implied usage is clear but lacks exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.