Cowrie Research

agentdata-api

2 min read

AgentData API

  • Name: AgentData API
  • URL: https://agentdata-api.com/
  • Category: x402 seller / market-data wrapper
  • Tags: ethereum-ecosystem
  • Summary: AgentData API is a small x402 seller on Base. The analytics are interchangeable. The note is worth keeping because the pricing and discovery surfaces are clean and the facilitator stays visible.
  • What it does:
    • Sells crypto market-data endpoints for prices, funding rates, volatility, liquidation levels, correlations, Base activity, DeFi yields, arbitrage spreads, sentiment, stablecoin health, and historical OHLCV data
    • Uses x402 v2 with HTTP 402 Payment Required and ERC-3009-style USDC payment authorization on Base Mainnet, with its own facilitator rather than an external broker
    • Publishes machine-readable discovery surfaces including /discovery, openapi.json, llms.txt, and agent.json
    • Keeps a small free preview tier so agents can inspect routes before paying for the fuller menu
  • Key claims:
    • This is seller packaging, not a market-data moat
    • The useful part is the route description: payment details, schemas, prices, and retry hints are machine-usable out of the box
    • The self-hosted facilitator makes it a cleaner specimen than more brokered x402 deployments
    • Keep the note as a paid-service example, not because the analytics catalog is especially important
  • Whitepaper: No canonical standalone AgentData API whitepaper or litepaper surfaced in this pass. The clearest current source of truth was the official site plus the service’s machine-readable discovery surfaces; see ../whitepapers/agentdata-api-primary-sources-2026-05-03.md.
  • Sources:

Internal linkages

Control surface

  • The operator controls which routes exist, how discovery describes them, what stays free versus paid, and how reliable the facilitator really is.

  • Useful seller packaging. Still just wrapper power above x402.

  • Last reviewed: 2026-06-18 UTC

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