customer.io — AI-readiness 52/100
52 / 100 5 audits1 of 5 comparable · rubric v7
https://customer.io/docs/api Scored with rubric v7.
· first 2026-07-28
· latest 2026-08-18
Independent, automated assessment. AgentFit is not affiliated with customer.io and did not ask for permission to publish it. How the score is calculated · Dispute or request removal
1 of 5 comparable · rubric v7
Only the most recent audit was measured with rubric v7; the other 4 used earlier rubrics and are on a different scale. One audit is not a range, so a single score is shown instead of best, average and worst.
This score is higher than 90 % of the 11063 sites measured on rubric v7.
The comparison set is the URLs people submitted to AgentFit, not a curated list of API documentation: it places this host among what was submitted, not in the market. Much of what was submitted is not API documentation at all and scores near zero — about a fifth of the set sits below 10 points — so a percentile here flatters a score compared with how it would rank among documentation sites. Counted on 2026-09-11. Each rubric version is ranked separately, because the versions are different rulers.
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<a href="https://agentfit.dev/browse/site/customer.io"><img src="https://agentfit.dev/badge/customer.io.svg" alt="AgentFit score"></a>Score by rubric version
Each rubric version is a different ruler: the rows are the same site measured different ways, and they do not form a trend.
| Rubric | Audits | Best | Avg | Worst | Latest |
|---|---|---|---|---|---|
| v7 | 1 | 52 | 52 | 52 | 2026-08-18 |
| v6 | 1 | 50 | 50 | 50 | 2026-08-12 |
| v5 | 1 | 41 | 41 | 41 | 2026-08-07 |
| v4 | 2 | 33 | 33 | 33 | 2026-08-03 |
All audits
| Date | Score | Rubric | Status | |
|---|---|---|---|---|
| 2026-08-18 21:20 UTC | 52 | v7 | done | view → |
| 2026-08-12 02:04 UTC | 50 | v6 | done | view → |
| 2026-08-07 13:57 UTC | 41 | v5 | done | view → |
| 2026-08-03 19:48 UTC | 33 | v4 | done | view → |
| 2026-07-28 10:29 UTC | 33 | v4 | done | view → |
← browse public audits · JSON: /summary
How the score is calculated
customer.io scores 52 out of 100 on the AgentFit AI-readiness rubric: 28 deterministic checks in 6 categories, run over plain HTTP with no LLM in the loop.
Strongest category: Discovery (12/14). Weakest: API contract (4/17).
5 audits recorded, most recently on 2026-08-18.