niche · -0.2 capability schema

Pay-per-call

Score 17.2 / 100 22 providers +1 via APIs 2 APIs Search apis.io →

Providers using this tag (22)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 1 Complete, well-documented, and agent-ready
EmbossPDFFormsDocument ProcessingForm Filling3 APIs71.7
Developing 6 Usable, with meaningful gaps to close
anchor-x402Companyx402AgentsPayments1 API49.7Agent HarborArtificial IntelligenceBlockchainData1 API45.7TwitterAPIsCompanyX-DataDubai1 API51.2redditapis-comCompanyRedditArtificial Intelligence1 API49.2Agent402 ToolsArtificial IntelligenceMarketplaceTools1 API46.7twitr-shCompanyXTwitter1 API43.3
Thin 11 Limited public surface area
QoreviaMarket DataGoldXAUUSDTrading1 API37.7Quietforge StudioArtificial IntelligenceDocument Processingx402Micropayments1 API35.4omnidev-techArtificial IntelligenceLLMDeveloper-friendly1 API33.4fetcher-cloudCompanyArtificial IntelligenceTools1 API32.2ARAKEL Machine Evidence Networkmachine-evidenceComplianceSanctions ScreeningOFAC1 API31.3Serbia Company DataSerbiaCompany DataBusiness RegistryOpen Data1 API29.6fetcher-shCompanyWeb DataAPI AggregationNo Auth4 APIs37.1_doneDeveloper ToolsUtility APIsAI AgentsAgent-Native26 APIs36.8agentbit-appCompanyArtificial IntelligenceTools1 API36.1bountyapi-comCompanyDataArtificial IntelligenceMCP1 API33.8IntentGuardCompanyArtificial IntelligenceAgentsModel Routing1 API32.9
Emerging 3 Early or largely undocumented
CablesMCP ServerAgent-Nativex4021 API25.8x402supply-comCompanyArtificial IntelligenceBlockchain3 APIs20.0Agent NewsstandArtificial IntelligenceMarket DataFinanceWeb Intelligence1 API22.4
Unrated 1 Not yet scored
Cracked APIAI AgentsAgent ToolsMCPTool Router1 API

APIs with this tag (2)

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 →

Developing 1 Usable, with meaningful gaps to close
Agent Upgrade Network Pay per call APIProducts any agent buys with x402 (USDC on Base), no account. Charged only after a successful result exists.48.7
Thin 1 Limited public surface area
_done CatalogSingle-page agent-native catalog of the 27 _done pay-per-call utility APIs. Publishes a real llms.txt, a ro...36.8

Companies reaching this through an API (1)

These companies publish an API, specification or operation carrying “Pay-per-call” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Agent Upgrade Network

Score breakdown

Frequency
36.2
log-scaled weighted occurrences
Breadth
0.3
spread across providers
Quality lift
40.0
mean composite of providers using it
Cohesion
0.5
strength of nearest seed neighbor

Related tags

x402 Verified 5 co-occurrences x402 10 co-occurrences Tools 5 co-occurrences A2A 6 co-occurrences Agent-Native 5 co-occurrences Data 5 co-occurrences MCP 10 co-occurrences Artificial Intelligence 12 co-occurrences

Where this tag comes from

Api tag2
Provider tag22

Work with this as data

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Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This tag 
curl "https://apis.io/api/v1/tags/pay-per-call"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/pay-per-call"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/pay-per-call/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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