Fifteen tools over a Claude Code changelog that reads the actual release diffs instead of copying out Anthropic's notes. Ask what changed between two versions, search entries by area or tier, pull one entry in full, read the stock system prompts version by version, diff Anthropic's docs day by day, or look up an env var or a hook API and get back the release that introduced it. Every answer carries the public URL it came from, so you can hand a link to a person instead of a paragraph. Anthropic ships Claude Code fast and says little about what is in it. Features land with no announcement, no changelog entry, sometimes no documentation at all, and the official notes are one line per release when they exist. The site behind this server unpacks every build and writes up what actually moved, down to the flags and internal APIs nobody mentioned. This is how a model reads it without you pasting anything in.

MCP readiness

B · 83/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here B+, 90.7/100), which weighs availability, conformance, p95 speed and descriptor. How the two differ

Valid MCP handshake	10/10	initialize and tools/list both answered.
Live MCP endpoint	25/25	Endpoint answers the MCP initialize handshake (396 ms).
Protocol revision	6/10	Speaks MCP 2025-06-18, 2 revision(s) behind 2026-07-28.
Signed descriptor	n/a	No MCP standard defines a signed server descriptor.
Uptime (30 days)	15/15	22/22 probes succeeded over 30 days (100%).
Tool declaration	10/10	Lists 15 tool(s) with descriptions.
Verified identity	5/10	Publisher declared (repository, package or homepage); claim this listing to verify domain control.
Freshness + modern flags	4/5	seen in a source within 7 days.
Auth declaration	0/5	How to authenticate is not stated.

Applicable criteria total 90 points, scaled to 100.

Responsiveness: Responsive (396 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).

Measured 2026-11-11.

Nine criteria, the same as the A2A readiness score, read from our daily MCP probe (initialize + tools/list) and 30-day probe history. No MCP standard defines a signed server descriptor, so that criterion is n/a and the other 90 points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. Display only: search order uses the quality grade.

Compared with peers

Against 53,039 reachable MCP servers in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.

Readiness: Higher than 60% of peers; This listing 83 · peer median 81
Latency: Faster than 65% of peers; This listing 229 ms · peer median 326 ms

Where it loses the most points, and how to win them back

Verified identity −5 — Claim the listing and prove control of its domain.
Now: Publisher declared (repository, package or homepage); claim this listing to verify domain control.
Auth declaration −5 — State how to authenticate (an auth scheme, or that none is needed).
Now: How to authenticate is not stated.
Protocol revision −4 — Support the current protocol revision.
Now: Speaks MCP 2025-06-18, 2 revision(s) behind 2026-07-28.

How many agent tools actually work · All statistics

Listed in

Directories this entry was found in.

agenstry since 2026-10-22 ↗

How to connect

MCP endpoint (streamable-http)

https://changelogs.core-directive.com/mcp

JSON-RPC initialize probe

curl -X POST https://changelogs.core-directive.com/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'

Homepage

https://changelogs.core-directive.com

Listed at (agenstry)

https://agenstry.com/mcp/coredirective/ccchangelogs