# 24K Labs — gold-402
> The curated x402 directory and editorial verdict layer. 459 hand-checked services — every entry answered a live x402 probe at review. No filler, no dead links, no pay-to-list.

Last updated: 2026-08-21 (generated at build from the directory database).
License: directory data is CC BY 4.0 — attribution required: cite 24klabs.ai (gold-402).

## Machine-readable
- /directory.json: directory PREVIEW as JSON — shelf structure, counts, and the 25 most recently listed entries. The full set is not served in bulk to anonymous callers; per-resource verdicts are at /api/v1/verify and every entry is browsable at /directory
- /sitemap-index.xml: every page on this site
- /badge.svg?resource=<url>: the 24K verify badge for a listed service (live-rendered from our data, so it reflects the current verdict — it is not a static image)
- /card.svg?resource=<url>: the aggregation card — the 24K verdict PLUS independent rater grades in one image
- /api/v1/verify?resource=<url>: paid lookup ($2.00, x402) — our verdict plus aggregated rater grades as JSON. The free live probe at /api/probe covers reachability and payment terms; this is the editorial judgement.
- /verify: human page for the free probe above
- /api/probe?url=<url>: FREE live probe of any x402 endpoint, listed or not — returns reachability, whether it is a real 402, decoded payment terms, origin manifest, and curated-list status. No key, no payment. Human UI at /verify.

## The directory (459 entries, 13 shelves)
- APIs & Services: 127
- MCP Servers: 56
- Ecosystem: 47
- Learning Resources: 45
- SDKs & Libraries: 43
- Tools & Utilities: 40
- Security: 25
- Facilitators: 22
- Global Agent Economy: 18
- Frameworks & Middleware: 17
- Community: 13
- Market Data: 5
- Aggregators & Proxies: 1
- Browse: /directory — per-service snapshot pages at /listing/<slug>/

## Editorial
- Featured — August 2026: one pick per shelf, chosen by the maintainers: /featured
- This Week in x402 — the weekly wire, dated permanent editions: /news
- Articles & verification reports: /articles

## Get listed
- Intake is a GitHub pull request: https://github.com/Haustorium12/gold-402 (read CONTRIBUTING.md first)
- Listed = verified: a maintainer confirmed your endpoint answered an x402 request correctly at review.