high / 66
AgentMail
Create and operate dedicated email inboxes for AI agents. Supports programmatic inbox creation, outbound sending, inbound message retrieval, unique agent addresses, workflow automation, and no manual account setup for email-based agent tasks.
- category
- messaging
- endpoints
- 51
- price
- $0-$10
- free tier
- no
- meaningful per-call spend
- wide endpoint surface
- message-sending workflow
- personal or business-contact data
provider endpoint
medium / 56
StableCrypto
Access crypto market and on-chain data through CoinGecko, DefiLlama, Alchemy, and Etherscan. Covers prices, DEX pools, DeFi TVL, yields, bridges, treasuries, token balances, transactions, contracts, logs, gas, and Ethereum stats.
- category
- finance
- endpoints
- 105
- price
- $0.01
- free tier
- no
- wide endpoint surface
- financial data or wallet context
- untrusted web-data input
- metered without free tier
provider endpoint
medium / 56
StableDomains
Register, renew, and manage DNS for domains via stablecoin micropayments. Supports common TLDs including .com, .org, .net, .io, .ai, .dev, .app, and .xyz, plus DNS record creation and updates without traditional registrar billing.
- category
- cloud
- endpoints
- 3
- price
- $0.1-$1,500
- free tier
- no
- large per-call ceiling
- message-sending workflow
- domain or DNS workflow
- metered without free tier
provider endpoint
medium / 54
Venice.ai — Private AI Inference
OpenAI-compatible inference API for text, image, audio, and video generation with x402 wallet access. No API key required — authenticate with an EVM or Solana wallet via SIWX and pay with USDC credits.
- category
- ai_ml
- endpoints
- 43
- price
- $5-$10
- free tier
- yes
- meaningful per-call spend
- financial data or wallet context
- untrusted web-data input
provider endpoint
medium / 50
StableEnrich
Unified enrichment gateway for Apollo, Exa, Firecrawl, Google Maps, Hunter, Minerva, Reddit, Serper, Whitepages, Cloudflare, and more. Covers people and company enrichment, web search, scraping, maps, email verification, and property data.
- category
- data
- endpoints
- 34
- price
- $0.002-$0.44
- free tier
- no
- message-sending workflow
- personal or business-contact data
- untrusted web-data input
- metered without free tier
provider endpoint
medium / 48
StablePhone
Make AI-powered outbound phone calls, buy dedicated phone numbers, extend number leases, and look up iMessage or FaceTime capability. Supports call IDs, caller ID continuity, global phone workflows, and pay-per-call voice automation.
- category
- messaging
- endpoints
- 3
- price
- $0.05-$20
- free tier
- no
- meaningful per-call spend
- message-sending workflow
- voice or calling workflow
- metered without free tier
provider endpoint
medium / 44
Quicknode
Pay-per-request JSON-RPC endpoints for 140+ blockchain networks. Each chain is its own path (e.g. solana-mainnet, ethereum-mainnet). Supports SIWX session auth, x402 micropayments, dynamic per-method pricing, and direct node access without infrastructure.
- category
- compute
- endpoints
- 137
- price
- $0.001-$1
- free tier
- yes
- wide endpoint surface
- financial data or wallet context
provider endpoint
medium / 44
StableSocial
Retrieve social media data from TikTok, Instagram, Facebook, and Reddit. Covers profiles, posts, comments, followers, following lists, search results, subreddit content, engagement metrics, captions, authors, timestamps, and nested threads.
- category
- media
- endpoints
- 36
- price
- $0.06
- free tier
- no
- personal or business-contact data
- untrusted web-data input
- metered without free tier
provider endpoint