API Change Feed

Name: API Change Feed
Author: dev.workers.anthonyzilar.changefeed

MCP serverMCP

Breaking changes, deprecations and security fixes for 38 popular APIs/SDKs. Paid per call via x402.

by dev.workers.anthonyzilar.changefeedhomepage ↗v0.3.0

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Observed by Wellknown

Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability11/11 checks ok

30 days ago

when	check	result	http	latency	detail
8 h ago	mcp initialize	ok	200	244 ms	server api-change-feed 0.3.0 · protocol 2025-06-18 · 6 tools
16 h ago	mcp initialize	ok	200	603 ms	server api-change-feed 0.3.0 · protocol 2025-06-18 · 6 tools
25 h ago	mcp initialize	ok	200	406 ms	server api-change-feed 0.3.0 · protocol 2025-06-18 · 6 tools
34 h ago	mcp initialize	ok	200	30 ms	server api-change-feed 0.3.0 · protocol 2025-06-18 · 6 tools
2 d ago	mcp initialize	ok	200	644 ms	server api-change-feed 0.3.0 · protocol 2025-06-18 · 6 tools
2 d ago	mcp initialize	ok	200	369 ms	server api-change-feed 0.3.0 · protocol 2025-06-18 · 6 tools
3 d ago	mcp initialize	ok	200	401 ms	server api-change-feed 0.3.0 · protocol 2025-06-18 · 6 tools
3 d ago	mcp initialize	ok	200	468 ms	server api-change-feed 0.3.0 · protocol 2025-06-18 · 6 tools
3 d ago	mcp initialize	ok	200	429 ms	server api-change-feed 0.3.0 · protocol 2025-06-18 · 6 tools
4 d ago	mcp initialize	ok	200	606 ms	server api-change-feed 0.2.0 · protocol 2025-06-18 · 5 tools

Tools observed via MCP handshake

list_sources — List the 60 APIs/SDKs we track and the package names to query them by. Free.
preview_changes — Latest five breaking/deprecation/security headlines across all sources, to check freshness. Free.
quick_check — Free. Before writing code against a library you may know only from older training data, check whether it changed since that version: verdict, major versions cro
upgrade_check — What changed in a package since the version your code targets: breaking changes, deprecations, security fixes and major versions crossed, with the sentence that
get_changes — Normalized change records (breaking, deprecation, security, release) for one tracked API/SDK or all of them, filterable by date and kind. Costs $0.005 (x402, US
digest — Everything breaking, deprecated or security-related across all tracked sources since a date, grouped by source. Costs $0.02 (x402, USDC).

Hidden text

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Text a person reading a tool definition does not see and a model does. Invisible characters can be pasted in by accident; this says what is there, not why. Covers tools only, not prompts or resources.

Declared by sources

What the publisher says

Attributed to the source that supplied each field. Treated as claims, not facts.

No long description beyond the summary.

kind Official MCP Registry

name Official MCP Registry

summary Official MCP Registry

version Official MCP Registry

description Official MCP Registry

homepageUrl Official MCP Registry

publisherName Official MCP Registry

Derived by Wellknown

Capabilities

Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.

data.newsNews & Feeds100%content.writingWriting & Editing51%dev.package-managementPackages & Dependencies51%

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

Official MCP Registrydev.workers.anthonyzilar.changefeed/api-change-feed

first seen 4 d ago · fetched 11 min agoopen ↗

Field history (6 recent events)

4 d ago · declared · summary → "Breaking changes, deprecations and security fixes for 38 popular APIs/SDKs. Paid per call via x402."
4 d ago · declared · description → "Breaking changes, deprecations and security fixes for 38 popular APIs/SDKs. Paid per call via x402."
4 d ago · declared · publisherName → "dev.workers.anthonyzilar.changefeed"
4 d ago · declared · homepageUrl → "https://changefeed.anthonyzilar.workers.dev"
4 d ago · declared · version → "0.2.0"
4 d ago · declared · protocols → ["mcp"]