Market note · 28 September 2026
Flat day as coverage climbs; no published moves
The Agentic Economy Price Index closed the 28 September observation at 100.479, unchanged from 100.479 on 27 September (0.00% day-over-day). Over seven days the headline is a hair softer (about −0.026% vs 21 September); over 30 days it is up +0.30%. Like-for-like coverage climbed hard — 9,872 pairs, from 9,245 the day before (+627). These levels and pair counts are from aepi-ledger-v2; do not stitch them to older market notes that used the prior ledger (earlier September drafts sat near 7.5–7.7k pairs). Pulse released 2026-09-28T04:45:27Z (release_id 58, aepi-ledger-v2). Data by Agentery; free series live at aepi.ai.
Agents and MCPs, not one blend
| Scope | Level | Pairs | 30d |
|---|---|---|---|
| All | 100.479 | 9,872 | +0.30% |
| Agents | 100.412 | 2,532 | +0.10% |
| MCPs | 100.441 | 5,282 | +0.30% |
| Infrastructure | 100.428 | 1,841 | +0.54% |
| APIs | 101.345 | 393 | +1.28% |
| Platforms | 100.17 | 1,360 | +0.43% |
| Frameworks | 100.62 | 88 | 0.00% |
| Skills & plugins | 109.724 | 51 | +2.55% |
Levels and pair counts are from aepi.ai (pulse + index.csv), not a third-party embed. Every delivery scope printed the same index level as 27 September — the move today is coverage, not price. Pairs rose across the board (MCPs +416, Agents +102, Infrastructure +82, APIs +37, Platforms +39, Frameworks +6, Skills & plugins +16). Frameworks and Skills & plugins still sit on thin cohorts (88 and 51 pairs) — low confidence by design. Skills & plugins remain the strongest 30-day riser in this release set (+2.55%); APIs hold a firm +1.28% over the same window.
What published
Published genuine repricings for the day: none (held = 317; zero currency-only moves filtered).
No published cards. Held candidates stayed behind the usual gates (quarantine, floor/estimate qualifiers, usage-access unknowns, and plans that still need two identical observation days). Net a flat headline on a coverage day: more like-for-like pairs entered the chain, and nothing cleared the published bar.
Method in one line
AEPI only counts a price change when the same plan from the same provider is observed at a new standing price — live daily at aepi.ai and agentery.com/aepi. Free CSVs and MCP at aepi.ai. Not investment or pricing advice.
Figures from aepi.ai pulse + index.csv for observation day 2026-09-28 (release 58, published 21:45 PT / 04:45 UTC). Prefer aepi.ai over agentery.com/aepi embedded payload on any disagreement.