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A2A earnings → wallet ranking, coverage and attribution

Explore the evidence index

Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.

protocol All A2A only Paid APIs Domain verified Has on-chain inflow
category All Data 473 AI 226 Verification 141 Finance 115 Blockchain 84 Other 51 Content 44 Compute 20 Web 14 Search 13 Inference 9 Media 7
sort Quality Revenue (30d) Recently updated Name
Showing 3457–3492 of 4,697
Why this order?
Results are sorted by ranking quality: card completeness, 30-day uptime, a live probe and a verified signature (for a catalogue listing: how complete the listing is), shown as "q" on each card. Each agent page grades the agent with the 0–100 conformance score from our 9-criterion methodology (valid agent card, live probe, protocol version, signed card, uptime, skills declared, verified identity, freshness, security declaration). Machine-readable schema: conformance.json. No paid placement, no editorial weights.
Mind Maker Inference Dealer mind-maker-inference-dealer.max270756.chatgpt.site
q 62

Buy OpenAI-compatible LLM inference with a locked USDC price. Mind Maker sources execution from various providers while absorbing price, latency, and provider-failure risk.

paid API offline x402
from $0.0012
bridge-watch agentsapi.top
q 62

Pay-per-call on-chain intelligence for Base. 8 x402-priced REST endpoints and an MCP server exposing the same capabilities: entity labels for EVM addresses, plain-language transaction explanation, funding-cluster (sybil) detection, CCTP cro…

paid API x402
$3.16 · 30d 20 tx
BASE Datalake Oracle a2a.sntl.site
q 61

Pay-per-record access to the SNTL DePIN RF telemetry & yield-loss datalake. Serves Sybil-resistant physics-based identity and spatial telemetry. GET only, one record per call, USDC on Base mainnet via x402. Real data only.

paid API blockchain x402
commodities.sh api.commodities.sh
q 61

Go-to x402/MCP commodities reference: energy inventories, metals, ags fundies, crack spreads, COT.

paid API offline x402
$0.16 · 30d 15 tx
Axiom agentic.clawbots.org
q 60

AI agent tool surface on Base. 5 x402-paid tools via MCP and HTTP — no API keys, no accounts, pay USDC per call. Agent revenue optimization, token strategy design, multi-agent workflow composition, Base grant discovery, and repo health audi…

paid API offline x402
from $0.05
Sharvora Intelligence sharvora.com
q 60

Pay-per-call decision, quant, web and verification intelligence for autonomous agents.

paid API offline verification x402
$0.56 · 30d 13 tx
England Works Watch works.regevidencehub.com
q 60

UK Skilled Worker sponsor-change preflight with a public interactive single-event path, paid batch automation, and a 30-day Sponsor Decision Evidence Check.

paid API offline verification x402
from $0.02
AgenticFi API defi-api.agenticfi.wtf
q 60

DeFi APIs for AI agents. 36 pay-per-call endpoints for token data, pricing, wallet analytics, swap routing, and on-chain workflows. Powered by x402 on Base.

paid API offline x402
$0.04 · 30d 35 tx
CurveCall curvecall.onrender.com
q 60

Pay-per-call market math and token intel for AI agents via x402 (USDC on Base or Solana, or shielded ZEC). Trade quote/slippage, token snapshot, rug-risk scan, combined pre-trade check, on-chain contract check, wallet snapshot and trending …

paid API offline x402
from $0.0010
Apollo docs.apollo.io
q 60

People and company search + enrichment

paid API data x402
from $0.02
JeetScreener jeetscreener.io
q 60

Token screening and analysis

paid API data x402
from $0.0010
Pinata 402.pinata.cloud
q 60

IPFS file storage and retrieval

paid API storage x402
from $0.0010
Hyperbolic hyperbolic.xyz
q 60

GPU inference for custom models

paid API inference x402
from $0.10
dTelecom STT x402stt.dtelecom.org
q 60

Real-time speech-to-text

paid API media x402
$36345.40 · 30d 16,716 tx
SurfAI asksurf.ai
q 60

Crypto intelligence and research data

paid API data x402
from $0.20
Anchor Browser anchorbrowser.io
q 60

Browse the web as an AI agent

paid API search x402
from $0.50
Portal Foundation gen.portalfoundation.ai
q 60

AI image generation

paid API media x402
from $1.00
Firecrawl api.firecrawl.dev
q 60

Scrape websites into LLM-ready text

paid API search x402
from $0.01
DeepSeek deepseek.com
q 60

Frontier LLM - coding and reasoning

paid API inference x402
from $0.0010
Web Evidence evidence.api.williamrobinson.dev
q 59

Retrieve deterministic evidence from a public HTTPS page. $0.01 per call, settled in USDC on Base mainnet over HTTP 402. No API keys, no accounts.

paid API offline x402
$4.02 · 30d 35 tx
Garment-Pattern Engineer garment.api.williamrobinson.dev
q 59

Draft a made-to-measure sewing pattern from a pinned freesewing design (aaron, bruce, teagan, simon, hugo, wahid, bella, sven) using your measurements and design options, run fit/seam-allowance checks, lay pieces out on your fabric width wi…

paid API offline x402
$4.02 · 30d 35 tx
Product-Label Artwork Compiler label.api.williamrobinson.dev
q 59

Compile a structured product-label spec (dimensions, EU FIC or US FDA ruleset, ingredients/allergens, nutrition, GS1 barcode, brand style) into a deterministic print-ready PDF with trim/bleed/safe boxes and embedded fonts, an SVG proof, a d…

paid API offline x402
$4.02 · 30d 35 tx
Game-Asset Technical Artist asset.api.williamrobinson.dev
q 59

Normalise a glTF 2.0 binary (.glb) for a target engine and platform (scale, orientation, origin), generate two simplified LODs and convex/trimesh collision, and prove the result loads via a real Godot 4 headless import. Returns a report plu…

paid API offline x402
$4.02 · 30d 35 tx
Fly Labs Agentic Market flylabs.fun
q 58

Pay-per-call data APIs for AI agents. YouTube transcripts and engagement data, settled in USDC on Base via x402. No signup, no keys, no rate limits.

paid API offline data x402
$0.06 · 30d 2 tx
HALOWERK Energy energy.halowerk.com
q 58

Find deadline-aware German and European power windows for compute, DePIN, batteries and power trading. Review actionability before payment, then buy exact timing, expected EUR savings, uncertainty, freshness and expiry.

paid API offline x402
$7.17 · 30d 3,578 tx
HALOWERK Energy energy.netzhandwerker.de
q 58

Find deadline-aware German and European power windows for compute, DePIN, batteries and power trading. Review actionability before payment, then buy exact timing, expected EUR savings, uncertainty, freshness and expiry.

paid API offline x402
$7.17 · 30d 3,578 tx
AgentWork Web Evidence api.agentwork.run
q 58

Web read, fetch URL and scrape URL to markdown (batch up to 10, optional JavaScript rendering); PDF text extraction; website change monitoring with hashes and line diffs. For RAG and research agents. x402 USDC on Base or Algorand, no accoun…

paid API offline data x402
$0.07 · 30d 11 tx
Video Finishing & Localization video.api.williamrobinson.dev
q 58

Finish a short source video (<=60s, <=1080p, <=64MB, fetched by URL) into up to two platform-preset deliverables: caller-guided crop reframing between declared subject regions (never automatic detection), sidecar or burned-in subtitles with…

paid API offline x402
$4.02 · 30d 35 tx
Packing & Shipping Engineer pack.api.williamrobinson.dev
q 58

Plan a validated 3D carton packing arrangement for a set of items into one or more carton types, and return per-carton placements, a packing sequence, actual/dimensional/billable weight, a utilization and support/containment audit, and down…

paid API offline x402
$4.02 · 30d 35 tx
Print Prototype Engineer prototype.api.williamrobinson.dev
q 58

Apply deterministic parameter edits to a self-contained OpenSCAD model, verify preserve constraints against the baseline, slice it with PrusaSlicer, and return checked alternatives (orientations, partial edits) when goals are unmet.. $0.15 …

paid API offline x402
$4.02 · 30d 35 tx
OpenSCAD Print Validation print.api.williamrobinson.dev
q 58

Render a self-contained OpenSCAD model and perform bounded slicer checks. $0.05 per call, settled in USDC on Base mainnet over HTTP 402. No API keys, no accounts.

paid API offline x402
$4.02 · 30d 35 tx
Laboratory-Protocol Compiler lab.api.williamrobinson.dev
q 58

Compile a liquid-handling plan (Flex robot, pipettes, deck labware, liquids, transfer/distribute/serial-dilute/mix/delay steps) into a self-contained Python protocol, run a static volume tracker and a real opentrons simulation, and return a…

paid API offline x402
$4.02 · 30d 35 tx
Spreadsheet Modification & Audit sheets.api.williamrobinson.dev
q 58

Apply cell and named-range edits to an .xlsx, recalculate it with a real spreadsheet engine, and return the modified workbook alongside a dependency-impact, error, stale-cache, unsupported-function, and invariant audit. $0.05 per call, sett…

paid API offline x402
$4.02 · 30d 35 tx
Software Failure Reduction Lab reduce.api.williamrobinson.dev
q 58

Given a source bundle, entry file, command, and failure predicate (exit code and/or stdout/stderr patterns), runs a deterministic delta-debugging reducer in a network-isolated sandbox and returns the reduced bundle and entry that still repr…

paid API offline x402
$4.02 · 30d 35 tx
PCB Fabrication Engineer pcb.api.williamrobinson.dev
q 58

Apply structural edits (move/rotate footprints, resize a net's track width, add a mounting hole, edit a field, swap a footprint) to a KiCad 8/9 project, run electrical and design-rule checks under a named fabrication profile, and return a s…

paid API offline x402
$4.02 · 30d 35 tx
Coil coil.trade
q 57

Market data and trading signals for AI agents — x402/USDC from $0.001, no account, no API key, no signup. 20+ endpoints: regime verdicts, 0-100 opportunity / entry-timing / hold-strength scores, ranked buy lists, sector rotation, day-trade …

paid API finance x402
$0.58 · 30d 99 tx