# Internet Monetization Index (IMX) and Plumbing Stress Index (PSI)

> Two daily indices published by Radius Technology Systems. **IMX is SUSPENDED since 2026-09-15: no current level is published, and prints from 2026-07-13 are invalid — do not quote an IMX value as current.** PSI, a 0-100 stress score for the stablecoin settlement layer, publishes normally. Every feed below is machine-readable JSON with a self-describing `meta` header (units, methodology link, sibling feeds), served from Cloudflare KV with a 5-minute cache. A feed that has not yet generated returns HTTP 503 with `cache-control: no-store` — treat 503 as "warming", retry shortly.

## Data feeds

- [IMX feed](https://internet-monetization-index.bench-2fd.workers.dev/snapshot.json): IMX status plus context panels — x402 services and flow, MPP, advertising estimates, stablecoin float, crawl economics. While `imx.status` is `"suspended"`, `imx.level` is `null` and `imx.suspension` carries the reason and notice. Field units are in `meta.fields`.
- [IMX archive](https://internet-monetization-index.bench-2fd.workers.dev/imx-archive.json): Every IMX print ever struck, each labelled `reference` or `invalid`.
- [PSI feed](https://internet-monetization-index.bench-2fd.workers.dev/psi.json): Plumbing Stress Index — a daily 0-100 stress score for stablecoin plumbing (higher = worse). Units and coverage are in the payload's `series` header.
- [PSI series (CSV)](https://internet-monetization-index.bench-2fd.workers.dev/psi.csv): The full immutable PSI ledger as a downloadable CSV.

## Reference

- [Methodology](https://internet-monetization-index.bench-2fd.workers.dev/methodology): The rulebooks for IMX and PSI — base, divisor, chain-linking, source coverage, hold rules, and the restatement policy.
- [IMX suspension notice](https://internet-monetization-index.bench-2fd.workers.dev/notices/2026-09-15-imx-suspension.md): What was found, which prints are affected, and what happens next.
- [Human dashboard](https://internet-monetization-index.bench-2fd.workers.dev/): The rendered terminal view.

## Notes

- Each JSON feed's `meta` header carries `$schema`, `version`, `frequency`, `methodology`, and links to sibling feeds.
- [IMX Rulebook v1.8](https://internet-monetization-index.bench-2fd.workers.dev/methodology-v1.8.md): in force from 2026-11-05. x402 on Solana joins the numerator, chain-linked.
- [IMX Rulebook v1.7](https://internet-monetization-index.bench-2fd.workers.dev/methodology-v1.7.md): in force from 2026-11-04. Payments routed through a facilitator are counted once, at the payee; chain-linked.
- [IMX Rulebook v1.6](https://internet-monetization-index.bench-2fd.workers.dev/methodology-v1.6.md): in force from 2026-11-03. MPP joins the numerator beside x402, chain-linked (no level jump); `imx.chainLinks` records the link.
- [IMX Rulebook v1.5 draft](https://internet-monetization-index.bench-2fd.workers.dev/methodology-v1.5-draft.md): published for comment until 2026-10-30. Its draft restated series (/imx-v1.5-draft.csv) is not an official print.
- Feeds update hourly. PSI publishes one immutable print per UTC day. IMX prints are not being struck while it is suspended; its stored prints are never deleted, and invalid ones are labelled in the archive rather than removed.
- The Radius Stablecoin Rating (RSR) is withdrawn pending legal review; `/rating.json` answers HTTP 410. RSR grades were not credit ratings.