breaking-changes

What breaks when you upgrade a package, and what to use instead.

What breaks when you upgrade a package, and what to use instead. Structured migration data from each project's official upgrade guide: removed APIs with replacements and reasons, changed defaults, behavior changes, incompatible deps, and codemod commands. For coding agents whose training data predates recent releases. Covers react 19, typescript 6, pandas 3, express 5, django 6. Params: ?package=react&version=19.0.0. Free list at /dev/packages.

UNRATEDDelisted

Overview

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UNRATED

0 of 30 paid calls toward a letter

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$0.03 per call

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delivery unknown until someone pays

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0x506c3995…b74c9aff

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https://agentdataapi.onrender.com/dev/breaking-changes

MCP server on this host: io.github.nigelcox98/breaking-changes

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first 34 days ago · last 26 days ago

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Score, from free handshakes onlyweights 2026.09.1

UN
RATED

0.677 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.323: 0.123 uncertain ? + 0.200 short ? · 0.123 to B

How the composite of 0.677 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
liveness it answered at all	0.60	1.00	0.795		0.477	0	−0.123
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.677	gap to 1.000 = 0.323 · 0.200 short · 0.123 uncertain	0.677	−0.200	−0.123

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.000   latency p95    
+ 0.600 × 0.795   liveness       
+ 0.200 × 1.000   price stability
= 0.677           → UNRATED: 30 of 30 paid calls      weights 2026.09.1 · 30 samples · seed cap_01M1A59TGT240V9KG5PSRC9PV7|2026-08-16T03:49:24.664Z|2026.09.1

Verify it yourselfnpx teppi-check https://agentdataapi.onrender.com/dev/breaking-changescurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59TGT240V9KG5PSRC9PV7