Blast Radius
Haseeb AfsarDecisions from running platforms at Yahoo and Amazon, and measured numbers on the AI agent tooling your team is about to approve. Written by the person who has to sign off on it.
| Platform |  | Pricing | Only free issues | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 102 | Founded | 3 months ago | Last Issue | 5 days ago |
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haseebafsar.substack.comLatest Issues
The Grouping Key Is the Result
One account in my sample was drawn eight times. It failed all eight. Another was drawn seven times and passed all seven. I had been treating those fifteen draws as fifteen independent pieces of evidence.
They are not, and the number I publ...
Same Corpus, Three Answers: 25.3 to 0.3
The same 2,032 tool definitions have been measured for redundancy three times, by three pipelines, and the answers are 25.3 percent, 7.1 percent and 0.3 percent. Nothing about the corpus changed between them.
The corpus is UltraTool, Engli...
Duplicates Cap Reordering at 0.72 Points
On 8 September a reader handed me a piece of arithmetic with its own failure condition attached. Run it against my committed corpus counts and it settles one question outright and then refuses, in writing, to answer two others.
The setup,...
About One in Seven MCP Servers Answered
On 22 August we froze a list of 7,258 npm/stdio MCP servers, drew 400 of them at random with a recorded seed, and tried to start every single one. 195 answered.
I run this probe myself and publish the script, because the number that matter...
Launchable Share Fell 4.4 Points
Between 14 July and 22 August the MCP registry went from 16,548 unique servers to 24,135. Over the same 39 days the share of those servers launchable from npm or stdio fell from 35.1 percent to 30.7 percent.
Both numbers come from the same...
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Authors
The writers behind this newsletter.
Head of Engineering at Yahoo, running a content platform at 100M daily active users. Before that, 1.3 exabytes at Amazon. I measure the AI agent supply chain and publish the method. Advisory: calendly.com/haseebafsar
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