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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 310 AI 118 Verification 90 Finance 71 Blockchain 50 Other 27 Content 20 Compute 9 Storage 3 Media 3 Infrastructure 3 Social 2
sort Quality Revenue (30d) Recently updated Name
Showing 2881–2916 of 3,228
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.
providersignal.com providersignal.com
q 44

Filtered provider list with pagination. Filter on state, county, ZIP, specialty, DSO/Independent, license status, Medicaid state-roster enrollment.

paid API x402
$0.50 · 30d 1 tx
snowsignals-x402.snowsignals.workers.dev snowsignals-x402.snowsignals.workers.dev
q 44

SnowSignals phase boundary — pay-per-row market-phase reading

paid API x402
$0.96 · 30d 50 tx
tokensqueezer-production.up.railway.app tokensqueezer-production.up.railway.app
q 44

High-throughput text optimizer for agent data streams. Strips filler, collapses JSON, and densifies repetitive prose to cut upstream LLM token spend.

paid API x402
$0.35 · 30d 160 tx
scoop-api-production.up.railway.app scoop-api-production.up.railway.app
q 44

Find verified work and/or personal emails for a LinkedIn profile across multiple data providers (Aleads, Apollo, Nymeria, ContactOut). Optional Hunter.io verification. Returns in <5s.

paid API x402
$1.00 · 30d 4 tx
projectx402-production.up.railway.app projectx402-production.up.railway.app
q 44

Validate JSON against a JSON Schema. Checks LLM and agent output and API request payloads, returning structured errors with error codes, JSONPath locations, and a plain-English summary. Optional automatic repair of invalid payloads.

paid API x402
$0.02 · 30d 3 tx
vectorcache-production.up.railway.app vectorcache-production.up.railway.app
q 44

High-speed semantic vector cache for multi-agent swarms. Redis-backed similarity lookup with in-memory fallback before expensive embedding pipelines.

paid API x402
$0.35 · 30d 160 tx
stable-enrich-git-shafu-fullenrich-search-pricing-merit-systems.vercel.app stable-enrich-git-shafu-fullenrich-search-pricing-merit-systems.vercel.app
q 44

FullEnrich People Search — filter by company domain/name/LinkedIn URL, seniority, title, location, skills, and 20+ FullEnrich filters. Default lean roster: companies map + company_id refs; include_employment_history or verbose for full hist…

paid API x402
$1338.07 · 30d 53,028 tx
agent-id-x402-production.up.railway.app agent-id-x402-production.up.railway.app
q 44

Pay once, get a unique non-transferable agent identity tag: an issuer-signed credential binding your Ed25519 auth key to your paying wallet. Anti-Sybil proof of being a distinct, previously registered, paying agent. Unpaid 402 returns full …

paid API x402
$103.04 · 30d 5 tx
project-formatter-production.up.railway.app project-formatter-production.up.railway.app
q 44

Convert and transform data between formats: CSV to JSON, XML to JSON, and Markdown to HTML. Parse and reshape tabular and structured data. Optional self-validation pass returns structural errors. Built for data and agent pipelines.

paid API x402
$0.02 · 30d 3 tx
miroshark-x402-production.up.railway.app miroshark-x402-production.up.railway.app
q 44

MiroShark: run a multi-agent social-media simulation. Submit a prompt or scenario, get back a URL where you can watch a 25-agent simulation play out across Twitter, Reddit, and Polymarket over 10 rounds, then read a synthesized markdown rep…

paid API x402
$6648.20 · 30d 12 tx
stable-travel-hkd3tku0j-merit-systems.vercel.app stable-travel-hkd3tku0j-merit-systems.vercel.app
q 44

Get detailed information for a specific airport by its code

paid API x402
$91.41 · 30d 4,489 tx
stable-enrich-git-shafu-fix-fullenrich-nbsp-enums-merit-systems.vercel.app stable-enrich-git-shafu-fix-fullenrich-nbsp-enums-merit-systems.vercel.app
q 44

FullEnrich People Search — filter by company domain/name/LinkedIn URL, seniority, title, location, skills, and 20+ FullEnrich filters. Default lean roster: companies map + company_id refs; include_employment_history or verbose for full hist…

paid API x402
$1338.07 · 30d 53,028 tx
structdoc-api.hp-vladic.workers.dev structdoc-api.hp-vladic.workers.dev
q 44
paid API x402
$0.02 · 30d 11 tx
qr.bip-rep.com qr.bip-rep.com
q 44

Generate and read QR codes in one API for agents and automation. Generate a QR code from any text or URL as a PNG (base64) or scalable SVG, with configurable error-correction level, quiet-zone margin, and scale. Decode reads the embedded pa…

paid API x402
$1.25 · 30d 44 tx
friction-logs.krimskrams.xyz friction-logs.krimskrams.xyz
q 44

Provide a published slug from GET /v1/logs. Receive JSON with the complete Markdown record of our direct provider attempts, chronological blockers, impact, workarounds, outcomes, and the last-update time.

paid API x402
$1.05 · 30d 13 tx
cron.bip-rep.com cron.bip-rep.com
q 44

Dedicated cron expression utility for agents: compute the next N upcoming run times from a cron schedule with optional IANA timezone. No job execution, no shell access — parse and predict only.

paid API x402
$1.25 · 30d 44 tx
denpyo-api.hp-vladic.workers.dev denpyo-api.hp-vladic.workers.dev
q 44

OCR a Japanese invoice (請求書) into JSON — vendor, line items, 8%/10% consumption-tax (消費税) breakdown — and verify the qualified-invoice registration number (適格請求書 インボイス登録番号 / T番号, T+13 digits) against Japan's National Tax Agency (国税庁) regist…

paid API x402
$0.02 · 30d 11 tx
agent-api-listings.krimskrams.xyz agent-api-listings.krimskrams.xyz
q 44

Provide an API origin, inline OpenAPI document, and optional target list. Receive JSON with ready, blocked, or unsupported mpp.dev and x402-list packages, including exact reasons, without submission or directory fees.

paid API x402
$1.05 · 30d 13 tx
exec.speccy.cloud exec.speccy.cloud
q 44

Run untrusted Python 3.12 code in an isolated Docker sandbox (no network, read-only FS, 0.5 CPU, 512MB RAM, 30s timeout). Returns stdout, stderr and exit code. Max code size 64KB.

paid API x402
$1.16 · 30d 17 tx
convert.bip-rep.com convert.bip-rep.com
q 44

Convert between common document and data formats in one API for content and data agents: Markdown to HTML, HTML to Markdown, HTML to clean plain text (scripts/styles stripped, entities decoded), CSV to JSON (with or without header row), JSO…

paid API x402
$1.25 · 30d 44 tx
osha-search.46-224-157-88.sslip.io osha-search.46-224-157-88.sslip.io
q 44

Look up U.S. OSHA workplace inspections by establishment or company name. Use establishment, state, start_date, end_date, violations_only, and limit. Receive up to 20 JSON records with activity_id, date_opened, report_id, state, inspection_…

paid API x402
$1.05 · 30d 13 tx
route-catalog.krimskrams.xyz route-catalog.krimskrams.xyz
q 44

Count public paid API listings across collected snapshots. Receive JSON with route, seller-host, pay-to receiver, network, price, and HTTP method counts, plus new and removed seller hosts and the 24-hour route-count change.

paid API x402
$1.05 · 30d 13 tx
researcher.now researcher.now
q 44

Search Paul Graham's source corpus — a source-grounded persona of the Y Combinator co-founder and essayist, built from 13,000+ cited sources: his complete essays, talks, interviews, and X posts — by semantic + lexical query and retrieve gro…

paid API x402
$0.07 · 30d 7 tx
tools.speccy.cloud tools.speccy.cloud
q 44

Standard ffmpeg transformations: transcode, simple filters, resize <1080p. Returns base64 output. 50MB max input/output, 60s timeout, sandboxed workdir.

paid API x402
$1.16 · 30d 17 tx
listing-watchdog.krimskrams.xyz listing-watchdog.krimskrams.xyz
q 44

Provide one seller-owned HTTPS route and its GET or POST method. Receive JSON that compares its live unpaid challenge with the latest local CDP Bazaar, x402scan, and MPPScan snapshots and lists each drift.

paid API x402
$1.05 · 30d 13 tx
readiness-linter.krimskrams.xyz readiness-linter.krimskrams.xyz
q 44

Provide one inline OpenAPI document or public OpenAPI URL. Receive a JSON buyer-readiness score, rule results, and concrete fixes for payment metadata, missing examples, descriptions, and HTTP 422 traps.

paid API x402
$1.05 · 30d 13 tx
payment-recon.krimskrams.xyz payment-recon.krimskrams.xyz
q 44

Provide a Tempo or Base recipient address and optional UTC bounds within a maximum 31-day window (default seven days). Receive JSON from public chain data with incoming stablecoin transfers, totals, and product, protocol-fee, or unknown cla…

paid API x402
$1.05 · 30d 13 tx
flutter.bip-rep.com flutter.bip-rep.com
q 44

Flutter and Dart utility API for mobile agents and operators: pubspec parsing, pub.dev package lookups, Flutter APK detection, dependency checks, Dart formatting, project static analysis, ARB localization validation, and controlled APK buil…

paid API x402
$1.25 · 30d 44 tx
paulgraham.researcher.now paulgraham.researcher.now
q 44

Search Paul Graham's source corpus — a source-grounded persona of the Y Combinator co-founder and essayist, built from 13,000+ cited sources: his complete essays, talks, interviews, and X posts — by semantic + lexical query and retrieve gro…

paid API x402
$0.07 · 30d 7 tx
x402.outpimp.com x402.outpimp.com
q 44

Email validation API. Checks whether a string is a syntactically valid email address using the same production-grade validation library trusted across the Node.js ecosystem, catching edge cases a quick regex misses. Returns true or false.

paid API x402
$1.34 · 30d 134 tx
foundry-csv-drift-evidence-mainnet.inference-chip-index.workers.dev foundry-csv-drift-evidence-mainnet.inference-chip-index.workers.dev
q 44

Compare a caller-supplied candidate CSV with a caller-supplied known-good baseline and return deterministic structural drift evidence.

paid API x402
$98.42 · 30d 220 tx
ged-x402-jobs.jvalamis.workers.dev ged-x402-jobs.jvalamis.workers.dev
q 44

Submit an async browser job (screenshot, markdown, scrape, etc.). Returns job_id + poll_url; poll is free with token — no long x402 request hold.

paid API x402
$4.13 · 30d 283 tx
ged-x402-llm.jvalamis.workers.dev ged-x402-llm.jvalamis.workers.dev
q 44

Chat completion with GLM 5.2 on Cloudflare Workers AI (@cf/zai-org/glm-5.2). POST JSON messages[] (system/user/assistant) and optional max_tokens; pay USDC per request with dynamic neuron-based pricing.

paid API x402
$4.13 · 30d 283 tx
visa.orizn.app visa.orizn.app
q 44

Visa and entry requirements for a passport/destination pair: requirement type, visa-free days, documents, fees, processing time, transit rules, passport validity, overstay penalties and embassy contacts. Answers travel compliance and passpo…

paid API x402
$0.03 · 30d 1 tx
foundry-open-scholarly-evidence-mainnet.inference-chip-index.workers.dev foundry-open-scholarly-evidence-mainnet.inference-chip-index.workers.dev
q 44

Compare one supplied DOI across Crossref and DataCite and return bounded, attributed open-metadata agreement evidence.

paid API x402
$98.42 · 30d 220 tx
research.lumenhouse.xyz research.lumenhouse.xyz
q 44

Test a crypto, protocol, company, or market investment thesis with current cited evidence. Returns thesis status, verdict, confidence, catalysts, risks, red flags, invalidation conditions, monitoring triggers, unknowns, and next diligence s…

paid API x402
$106.00 · 30d 3 tx