HTTP 400 bad-request

blockers

agent-observatory-sensor.nolimit-observatory.workers.dev

Meaning of HTTP 400.

https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-400/mcpUnknownMCP 2025-03-26v3.0.0last checked 9 Sep 2026spoke MCP on 2 of 3 checks (30 days)initialize in 326 ms

How to authenticate

Checked against the endpoint by our probe on 9 Sep 2026. These are the capabilities the server advertises, not a prediction about any particular client.

Scheme	Unknown
Protected-resource metadata	✕Not found Without it a client has to guess where the authorization server lives.
Anonymous access	Refused — credentials required

What the probe found

blockerCould not reach the endpoint

error sending request for url (https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-400/mcp)

Tools

agent-tool-indexbrowser-url-okcalc-evalcitationcompatibilitydomain-shapefetch-statusfigma-url-shapefile-path-okgeo-hintgithub-repo-shapehn-front-counthttp-400iana-zonesinspect-robotsjira-key-shapelib-docs-hintmemory-key-countnormalize-urlplaywright-url-oksearch-query-lenstatus-catalogthink-stepstimezoneutc-timevalidate-jsonweather-hintweb-fetchwiki-title-ok

Contract history

9 Sep 2026v3.0.0first recorded contract

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Status badge

Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.

[![MCP status](https://mcpi.app/servers/http-400-bad-request/badge.svg)](https://mcpi.app/servers/http-400-bad-request)