Providers using this tag (32)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Strong 4 Solid coverage with minor gaps
Developing 16 Usable, with meaningful gaps to close
Thin 4 Limited public surface area
Emerging 6 Early or largely undocumented
APIs with this tag (16)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Strong 4 Solid coverage with minor gaps
x402 List APIPublic REST API (OpenAPI 3.1) providing access to the x402 services directory, uptime, pricing, facilitator...ByKaranteli X402 APIPer-call priced history and depth endpoints, settled in USDC over the x402 protocol on Solana and Base main...Hyperbrowser Web APIStateless web utilities: fetch a single page, run a web search, or start a crawl. Includes `/x402` micropay...Hyperbrowser X402 APIThe X402 API from Hyperbrowser — 2 operation(s) for x402.
Developing 10 Usable, with meaningful gaps to close
Grade APIREST API for the Grade IPTV catalog and personal library, with a public OpenAPI 3.1 contract, hosted MCP se...Kronos Quant Signal REST APILive REST/JSON API with 32 endpoints for price-path forecasting, market/risk context, accuracy audits, and ...Meta Agent Tools APIREST/HTTP API for a registry of MCP servers, agent skills and plugins — public catalog search, publishing/e...Figment X402 APIThe x402 API from Figment — 5 operation(s) for x402.CommsHarbor APIREST/HTTP API (OpenAPI 3.1) for transactional email, deliverability, sending domains, permission-based mark...HookPulse APIPublic REST/HTTP API for heartbeat monitors, ingest URLs, miss detection, alerts, status feeds, auth, billi...EditalMD APIPublic REST API over Brazil's PNCP procurement portal with full-text tender search, tender sheets and deadl...PageAudit APIREST/HTTP API for one-shot technical SEO audits plus micro-tools, with a hosted MCP server, llms.txt, and O...Radar CNPJ APIPublic REST API over the Brazilian CNPJ registry: business-idea evaluation, CNPJ lookup, advanced search/ex...TradeDataHub Public APIFree, unauthenticated REST discovery API for contractor/trade-business datasets, with paid CSV retrieval vi...
Thin 1 Limited public surface area
Emerging 1 Early or largely undocumented
Score breakdown
Frequency
47.6
log-scaled weighted occurrences
Breadth
0.9
spread across providers
Quality lift
48.4
mean composite of providers using it
Cohesion
1.8
strength of nearest seed neighbor
Related tags
Agentic Payments 5 co-occurrences
Micropayments 5 co-occurrences
Agent Payments 5 co-occurrences
agent-native 12 co-occurrences
Stablecoins 5 co-occurrences
Crypto 5 co-occurrences
AI Agents 11 co-occurrences
MCP 19 co-occurrences
Where this tag comes from
Provider tag32
Api tag16
Openapi tag3
Openapi op tag21
Cohort brief
Auto-generatedThe 32 providers in the APIs.io catalog tagged x402, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
32
all scored
Mean Kin Score
42.7
+18.9 vs catalog 23.8
Mean Agent Readiness
31.5
+19.9 vs catalog 11.6
Spread
17.7–76.1
median 44.6 · σ 14.2
How the 32 split by band
Exemplar 2Strong 4Developing 16Thin 4Emerging 6Minimal 0
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Developer Ergonomics | 50.1 | 23.3 | +26.8 | 32 |
| Contract Quality | 40.1 | 19.8 | +20.3 | 32 |
| Operational Transparency | 29.6 | 13.9 | +15.7 | 32 |
| Access Clarity | 41.1 | 26.3 | +14.8 | 32 |
| Discoverability | 75.6 | 61 | +14.6 | 32 |
| Contract Governance | 13.9 | 6.3 | +7.6 | 32 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 72% | 10% | +62 |
| MCP server (first-party) | 72% | 9% | +63 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 16% | 11% | +5 |
| Security | 97% | 97% | 0 |
| Arazzo workflows | 9% | 2% | +7 |
| Governance rules | 6% | 14% | -8 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 Drippay 76.1
- 2 0xArchive 72.7
- 3 Pagesnap 57.1
- 4 x402 List API 55.9
- 5 ByKaranteli 54.5
- 6 Hyperbrowser 54.4
- 7 FarmDash Agent Hub 53.5
- 8 Grade 51.4
- 9 AnyAPI 50.5
- 10 Sponge 49.3
Top by Agent Readiness
- 1 Drippay 66.1
- 2 0xArchive 52.6
- 3 AnyAPI 50.2
- 4 Sponge 47.5
- 5 Figment 41.8
- 6 ByKaranteli 38.8
- 7 HostDeFi 38.2
- 8 CommsHarbor 35.6
- 9 Pagesnap 35.1
- 10 HookPulse 34.2
All 32 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
9 September 2026, across 27528
providers, using the same computation served by the
APIs.io cohort API. Briefs are published for rosters of
5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.