Skip to content

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 335 AI 127 Finance 85 Verification 60 Blockchain 57 Other 22 Content 18 Search 14 Web 12 Compute 12 Infrastructure 10 Inference 9
sort Quality Revenue (30d) Recently updated Name
Showing 541–576 of 1,904
Why this order?
Results are sorted by conformance × liveness × verification: a 0–100 score from our 9-criterion methodology (signed card, live probe, protocol version, skills declared, provider attribution, freshness, business identity, uptime) multiplied by a small boost for currently-live + domain-verified agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
api.optranslations.com api.optranslations.com
65%
paid API x402
$6.01 · 30d 8 tx
openwebninja-x402.vercel.app openwebninja-x402.vercel.app
65%

Search Yelp businesses by query and location.

paid API x402
$0.17 · 30d 17 tx
signal-engine-production-d88d.up.railway.app signal-engine-production-d88d.up.railway.app
65%

Sandboxed Python code execution via E2B

paid API x402
$0.01 · 30d 10 tx
x402-services-production.up.railway.app x402-services-production.up.railway.app
65%

Tokenized-stock rich/cheap signal on Robinhood Chain: compares the onchain DEX token price vs the real equity's last close vs the Lighter perp mark, with each pairwise spread % and a directional NAV-convergence verdict. Send { ticker, thres…

paid API x402
$0.00 · 30d 1 tx
apify-api-git-br-apify-typed-input-schemas-merit-systems.vercel.app apify-api-git-br-apify-typed-input-schemas-merit-systems.vercel.app
65%

Start the "Google Search Results (~$0.05/1K Results)" Apify actor (scraperlink/google-search-results-serp-scraper). 🔥 ~$0.05/1K results ($0.50/1,000 SERPs) 🔥 **CHEAPEST** Google Search Results (SERP) Scraper with real-time SERP data and sup…

paid API x402
$2.58 · 30d 21 tx
permit-api-production-7375.up.railway.app permit-api-production-7375.up.railway.app
65%

Address-level building-permit intelligence. One call, one address returns normalized permit history, activity signals, and a decision-ready verdict with cited public records. Covers san francisco, seattle, austin, nyc, chicago, los angeles,…

paid API offline x402
$1.07 · 30d 4 tx
agentcash-fortune-demo3.vercel.app agentcash-fortune-demo3.vercel.app
65%

Random fortune — fixed price; x402 exact or MPP one-shot

paid API x402
$0.00 · 30d 1 tx
stable-enrich-git-shafu-stableenrich-nearb-74cfdf-merit-systems.vercel.app stable-enrich-git-shafu-stableenrich-nearb-74cfdf-merit-systems.vercel.app
65%

Google Maps Nearby Search (Partial). Finds places near a latitude/longitude using Google Places supported type filters. Use google-maps/text-search/partial for natural-language searches like "wedding planner" or "event planner".

paid API x402
$744.07 · 30d 27,657 tx
lookups.alienprobe.ai lookups.alienprobe.ai
65%
paid API x402
$0.03 · 30d 7 tx
language-detector.api.klymax402.com language-detector.api.klymax402.com
65%

Detect the language of input text with confidence scores and script identification

paid API x402
$7.40 · 30d 1,342 tx
hash-generator.api.klymax402.com hash-generator.api.klymax402.com
65%

Generate a cryptographic hash from text

paid API x402
$7.40 · 30d 1,342 tx
hl-vaults.api.klymax402.com hl-vaults.api.klymax402.com
65%

x402-protected paid API on hl-vaults.api.klymax402.com (discovered via Coinbase facilitator).

paid API x402
$7.40 · 30d 1,342 tx
research-report.api.klymax402.com research-report.api.klymax402.com
65%

Generate a research report on a given topic

paid API x402
$7.40 · 30d 1,342 tx
spatial-local-betty-fighting.trycloudflare.com spatial-local-betty-fighting.trycloudflare.com
65%

Full daily signal stack

paid API x402
$3.00 · 30d 3 tx
ocr-extract.api.klymax402.com ocr-extract.api.klymax402.com
65%

Extract text from an image via OCR

paid API x402
$7.40 · 30d 1,342 tx
sol-meme-intel.vercel.app sol-meme-intel.vercel.app
65%

Discover newly surfaced meme tokens on Solana from DexScreener boosted (PAID-promoted) and newly profiled tokens, enriched with price, liquidity, volume. Discovery starting point; check /api/safety, /api/holders, /api/bundle before trading.…

paid API x402
$0.10 · 30d 11 tx
openrouter-production-d0d6.up.railway.app openrouter-production-d0d6.up.railway.app
65%

Otto X402 Router — Feedback & Refunds. Rate a paid Router call by its payment tx_hash. An approved refund returns this $0.001 fee PLUS the refundable amount, only to the original payer, never above what you paid Otto.

paid API x402
$125.82 · 30d 72,888 tx
twit-api-production-de12.up.railway.app twit-api-production-de12.up.railway.app
65%

x402-protected paid API on twit-api-production-de12.up.railway.app (discovered via Coinbase facilitator).

paid API x402
$345.15 · 30d 57,137 tx
apify-api-git-br-better-actor-pay-merit-systems.vercel.app apify-api-git-br-better-actor-pay-merit-systems.vercel.app
65%

Start the "Fast YouTube Channel Scraper" Apify actor (streamers/youtube-channel-scraper). This alternative YouTube Data API has no limits or quotas. Use it to scrape one or multiple YouTube channels: channel info, URL, total number of subsc…

paid API x402
$2.58 · 30d 21 tx
rh-chain-intel.vercel.app rh-chain-intel.vercel.app
65%

Live network health of Robinhood Chain (Ethereum L2 on Arbitrum): latest block, average block time, gas prices, total/today transactions, total addresses, ETH price. No input.

paid API x402
$0.10 · 30d 11 tx
stable-media-git-ben-upgrade-agentcash-rou-02e093-merit-systems.vercel.app stable-media-git-ben-upgrade-agentcash-rou-02e093-merit-systems.vercel.app
65%

Search streaming shows by title in a country

paid API x402
$0.09 · 30d 9 tx
openclaw-customizations-production.up.railway.app openclaw-customizations-production.up.railway.app
65%
paid API x402
$0.08 · 30d 9 tx
api.agentstatus.tech api.agentstatus.tech
65%

x402-protected paid API on api.agentstatus.tech (discovered via Coinbase facilitator).

paid API x402
$0.00 · 30d 2 tx
sentinel-agent-wru6.onrender.com sentinel-agent-wru6.onrender.com
65%

Pre-execution transaction safety oracle for autonomous AI agents. Call SENTINEL before signing any on-chain transaction and receive a Signed SAFE / UNSAFE / UNKNOWN verdict (ed25519). Paid per call via x402 (USDC on Base).

paid API offline x402
$2.29 · 30d 30 tx
stable-people-data-git-pdl-signoz-usage-alarms-merit-systems.vercel.app stable-people-data-git-pdl-signoz-usage-alarms-merit-systems.vercel.app
65%

PDL Person Enrich - Enrich a person record with demographics, work history, education, contact info, social profiles, and skills. Supports lookup by name, email, phone, LinkedIn, or PDL ID.

paid API x402
$7.06 · 30d 83 tx
text-classifier.api.klymax402.com text-classifier.api.klymax402.com
65%

Classify text content into categories with confidence scores and readability metrics

paid API x402
$7.40 · 30d 1,342 tx
tools.netzhandwerker.de tools.netzhandwerker.de
65%
paid API x402
$0.99 · 30d 240 tx
clinical.memoryapi.org clinical.memoryapi.org
65%

ClinicalTrials.gov — get full details of a specific trial by NCT ID including eligibility, outcomes, and locations.

paid API x402
$0.60 · 30d 103 tx
agenttrust.uk agenttrust.uk
65%

Scan any OpenClaw SKILL.md for malware, prompt injection, exfiltration, and 37 other threat patterns. Returns risk score 0-100 and detailed findings.

paid API x402
$0.01 · 30d 1 tx
anansidata.xyz anansidata.xyz
65%
paid API x402
$3.03 · 30d 4 tx
files.camelai.io files.camelai.io
65%

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
$0.14 · 30d 8 tx
bio.memoryapi.org bio.memoryapi.org
65%

Drug target and bioactivity data from ChEMBL (EMBL-EBI) — ChEMBL ID, max clinical phase, molecular properties, indication class.

paid API x402
$0.60 · 30d 103 tx
lookups.nl lookups.nl
65%

Look up a domain's registration facts in its registry's own RDAP service: registrar, creation/expiry/update dates, EPP status codes, nameservers and the DNSSEC delegation flag, with retry, cache and a durable audit receipt.

paid API x402
$0.01 · 30d 2 tx
pii-detector.api.klymax402.com pii-detector.api.klymax402.com
65%

Detect personally identifiable information (PII) in text

paid API x402
$7.40 · 30d 1,342 tx
health.memoryapi.org health.memoryapi.org
65%

NIH research grants — funded projects with award amounts, PIs, organizations, and abstracts. Filter by query, fiscal year, and institution.

paid API x402
$0.60 · 30d 103 tx
x402-stall-l3bb.onrender.com x402-stall-l3bb.onrender.com
65%
paid API x402
$0.02 · 30d 2 tx