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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 549 AI 306 Verification 256 Finance 119 Blockchain 96 Other 51 Content 44 Web 31 Media 24 Compute 22 DevTools 21 Travel 20
sort Quality Revenue (30d) Recently updated Name
Showing 4429–4464 of 8,919
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.
Pagecheck-Api-Production pagecheck-api-production.up.railway.app
q 70

Audit supplied HTML for metadata, canonical URLs, indexability directives, headings, image alternatives, form labels, link names, social metadata and JSON-LD validity. Returns evidence and practical fixes. Static checks are not a full WCAG …

paid API x402
from $0.05
Reader-Api-Production-Bde1 reader-api-production-bde1.up.railway.app
q 70

Extract a readable article from supplied HTML, including title, author, language, metadata, clean Markdown, links and tables. Uses Mozilla Readability with a fallback for short pages. No remote fetches or script execution; URLs resolve rela…

paid API x402
from $0.02
Contract-Api-Production-C176 contract-api-production-c176.up.railway.app
q 70

Validate up to ten JSON documents against JSON Schema draft-07 or 2020-12. Returns per-document validity and actionable errors with instance paths. Runs isolated with bounded time and memory; no remote schema loading or automatic data modif…

paid API x402
from $0.02
Calendar-Api-Production-33A1 calendar-api-production-33a1.up.railway.app
q 70

Create RFC 5545 ICS calendars for appointments and itineraries, with all-day events, locations, descriptions and bounded recurrence. Timed events and recurrences are emitted in UTC; all-day end dates are exclusive.

paid API x402
from $0.02
Sheets-Api-Production-636C sheets-api-production-636c.up.railway.app
q 70

Create styled XLSX workbooks with typed cells, multiple worksheets, filters, frozen headers, numeric formats and cached formula totals. Input strings remain text, including strings beginning with =.

paid API x402
from $0.05
Print-Api-Production-A047 print-api-production-a047.up.railway.app
q 70

Turn headings, paragraphs, lists and tables into a paginated, styled A4 or Letter PDF with page numbers. No remote assets or arbitrary scripts.

paid API x402
from $0.05
Qr-Api-Production-7Adc qr-api-production-7adc.up.railway.app
q 70

Generate SVG or PNG QR codes for links, text and standard payloads. Includes a four-module quiet zone, selectable error correction and validated foreground/background contrast.

paid API x402
from $0.02
Oratio-Api-Production oratio-api-production.up.railway.app
q 70

Find cited Latin or English prayers and historical liturgical source excerpts from Divinum Officium by occasion, language and liturgy, using EmbeddingGemma 2 semantic search.

paid API x402
from $0.05
Mocks-Api-Production mocks-api-production.up.railway.app
q 70

Deterministic synthetic JSON or WireMock fixtures for ten commercial and four government APIs. Selected operations and realistic success/error scenarios, with source provenance.

paid API x402
from $0.05
2S-Rjsw718Bb-Alleyford 2s-rjsw718bb-alleyford.vercel.app
q 70

Search the catalog of every cataloged Earth-orbiting object — ~69,000 satellites, rocket bodies, and debris tracked by US Space Force / 18 SDS (via CelesTrak SATCAT). Filter by name (q, e.g. "starlink"), owner/launching country (owner — cod…

paid API x402
$0.02 · 30d 19 tx
Api api.aizamon.com
q 70

Polymarket vs Kalshi arbitrage / cross-venue mispricing gap card — $0.25 Bot Fuel. Top spread + net-edge for trading bots. Inline JSON. Scale via pack/day.

paid API x402
from $0.25
Theatlasproject theatlasproject.dev
q 70

TAP Certified referee fee for one job with a budget up to $25.00: the seller's code is judged on the buyer's hidden tests in a sealed sandbox, and the escrow pays out or refunds on the verdict.

paid API x402
from $0.50
Workspace-X402-Paywall workspace-x402-paywall.onrender.com
q 70

Computes a cryptographic hash of input text, returns a JSON object with the hex digest string

paid API x402
from $0.0050
X402 x402.presenceoperations.com
q 70

What it costs to hold a perpetual position: the venue's current hourly funding signed for your side, projected over your horizon in your own units, with the mark-to-oracle basis, open interest, and the assumption behind the projection state…

paid API x402
$3.54 · 30d 4 tx
Webtechnik webtechnik.halowerk.com
q 70

Parser-blocking script budget repair plan fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specifi…

paid API x402
from $0.0010
Agentkit-X402-Buy agentkit-x402-buy.netlify.app
q 70

ETH/USD spot via AgentKit x402 — $0.001 USDC

paid API x402
$0.07 · 30d 13 tx
Llm-Toll-Production llm-toll-production.up.railway.app
q 70

AI chat completion. Body: {"messages":[{"role":"user","content":"Hello"}]}. Returns AI reply.

paid API x402
from $0.01
Lucas-Agent lucas-agent.vercel.app
q 70

Quick research: ask any question, get a concise sourced answer with key points, sources, a confidence rating, and anything that could not be verified.

paid API x402
from $0.25
Payments-Intel-Production payments-intel-production.up.railway.app
q 70

What exactly does this provider support, where is it licensed and what does it charge? Full cited record for one provider: stablecoin rails, corridors, licences, published fees, coverage, developer and agent-payment support. Every fact has …

paid API x402
from $0.01
Files files.camelai.io
q 70

Upload a file and get a temporary signed URL. Send raw file body with Content-Type header. Returns a URL valid for 1 hour.

paid API x402
$0.01 · 30d 6 tx
X402Scan-Git-Router-117-Merit-Systems x402scan-git-router-117-merit-systems.vercel.app
q 70

Paginated list of merchants (top recipients by volume)

paid API x402
$12.52 · 30d 1,217 tx
Meta-Api-Router meta-api-router.johntaylor1online.workers.dev
q 70

Meta-API Router — intelligent API routing

paid API x402
$34.14 · 30d 267 tx
Mailcheck mailcheck.hugen.tokyo
q 70

MX record lookup for any domain — returns whether mail servers exist and their hostnames sorted by priority. Verify email deliverability before sending. Supports all TLDs including ccTLDs and new gTLDs. No DNS library setup needed. Accepts …

paid API x402
$6.85 · 30d 889 tx
X402-Stall-L3Bb x402-stall-l3bb.onrender.com
q 70

Hello from Taiwan — a signed timestamp from my first x402 stall

paid API x402
$0.05 · 30d 5 tx
Store store.cryptotradecalc.com
q 70

timezone-oracle: IANA time zone offset (minutes from UTC) and DST status for a given timezone name.

paid API x402
$0.04 · 30d 15 tx
Chess402 chess402.vercel.app
q 70

Masters opening explorer for a position. Returns top moves, win/draw/loss rates, and recent top master games from the Lichess masters database.

paid API x402
$0.02 · 30d 8 tx
Api api.exende.dev
q 70

Create a temporary public webhook endpoint for AI agents and automated workflows that need to receive asynchronous callbacks from external services. Returns a callback URL plus read and wait endpoints. No server deployment, signup, API key,…

paid API x402
$0.05 · 30d 5 tx
X402Endpoint-924155002144 x402endpoint-924155002144.us-west2.run.app
q 70

Nuclear preparedness instructions for a query.

paid API x402
$2.42 · 30d 80 tx
X402 x402.monpham.work
q 70

Search products across China B2B wholesale marketplaces (Yiwugo, Made-in-China, DHgate) via a stealth browser farm. Returns structured products: title, price, MOQ, supplier, images (optional CDN URLs). POST with {keyword, siteIds, limitPerS…

paid API x402
$0.33 · 30d 26 tx
Horizon-Pulse horizon-pulse.vercel.app
q 70

Horizon Pulse — real-time crypto market data + momentum signals (BTC/ETH/SOL) tuned for AI agents

paid API x402
$0.02 · 30d 4 tx
Robotshop robotshop.up.railway.app
q 70

Fast AST microservice that strips markdown code fences, fixes trailing commas, repairs unquoted JSON keys, and enforces strict schema validation for AI pipelines.

paid API x402
from $0.01
X402-Service-Production-E242 x402-service-production-e242.up.railway.app
q 70

Email and domain trust check. Give an email address or a domain, get one risk level (low, medium, high) with plain-language flags and the facts behind them: domain age, registrar, expiry and hold status (RDAP); MX, SPF and DMARC policy; the…

paid API x402
$2.60 · 30d 17 tx
Oc-Person-C oc-person-c.nvprotas.name
q 70

Ratatouille demo hello world: returns a greeting and a timestamp.

paid API x402
$0.01 · 30d 6 tx
Percallapi percallapi.com
q 70

Lookup WHOIS records and domain availability in JSON format. Provide the domain name via ?domain=example.com to query registrar, status, and expiration dates.

paid API x402
$0.08 · 30d 9 tx
X402-Paid-Mcp x402-paid-mcp.vercel.app
q 70

Compute a SHA-256 hex digest of a text payload. Cryptographic hash / checksum helper. Not an attestation.

paid API x402
$5.33 · 30d 13 tx
X402 x402.fairseal.io
q 70

Verifiable random numbers with cryptographic epoch references. Wesolowski 2048-bit VDF epoch chain with on-chain MerkleAnchor reference. For unbiased randomness: POST /v1/rng/commit (free), then GET the reveal_url returned in the response. …

paid API x402
$0.43 · 30d 72 tx