HTTP 501 not-implemented

Meaning of HTTP 501.

Source

Official Registry

Updated

2026-09-09

// securityCaution

Remote endpoint· agent-observatory-sensor.nolimit-observatory.workers.dev
Runs locally
Official / curated
Open source
Community-trusted

Running security audit…

Credentials
Network egress
Code execution
Data access
Supply chain

// install

Copy the install command and let the AI configure it · recommended for beginners

Please install the "HTTP 501 not-implemented" MCP server from askskill:
Run: claude mcp add --transport http 'io-github-sadri-dridi-http-501' 'https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-501/mcp'

// docs

No documentation provided

Check the source repo for usage and examples.

Go to source repo ↗

// from the same source

MCP

ISO country PH

Public ISO 3166-1 record for PH.

—Get→

MCP

Utility 109

Small public utility for autonomous clients.

—Get→

MCP

$ loading_

// docs

// from the same source

ISO country PH

Utility 109

Quoted-printable length, input discarded

sha256 digest shape, value discarded

Lowercase hex charset, input discarded

sidereal day fraction band

// docs

// from the same source

ISO country PH

Utility 109

Quoted-printable length, input discarded

sha256 digest shape, value discarded

Lowercase hex charset, input discarded

sidereal day fraction band