HTTP/1.1 402 PAYMENT REQUIRED agent402.base.eth · BASE · SOLANA · POLYGON · ARBITRUM · STELLAR · ALGORAND · ROBINHOOD · USDC · USDG

The Stellar x402 marketplace

Pay-per-call tools for AI agents — settled in USDC on Stellar in ~5 seconds, no signup, no API keys. The wallet is the account.

Latest settlement: $0.001 USDC · on-chain receipt · 2026-07-10T22:24:55Z

A paid canary buys tools over the Stellar rail daily (facilitator: OpenZeppelin) — uptime proven with real settlements, not pings.

SELLERS
4
TOOLS (THIS HOST)
1,419
LATEST SETTLE
$0.001
PRICE FLOOR
$0.001

Activity

APP.HEINRICHSTECH.COM · PAST 30 DAYS
TRANSACTIONS
0
VOLUME
$0
BUYERS
0

all inbound USDC to this seller's advertised x402 payTo wallet — may include non-x402 transfers

Sellers settling on Stellar

pick a seller to scope the activity charts to its on-chain wallet

Agent402.Tools (agent402.base.eth) THIS HOST
agent402.tools
1419 tools live
view activity →
api.molty.cash
api.molty.cash
8 tools healthy
view activity →
app.heinrichstech.com
app.heinrichstech.com
0 tools healthy
activity shown above
api.carbon-cashmere.de
api.carbon-cashmere.de
0 tools healthy
view activity →

Browse Stellar-payable tools

convert

meters → kilometers$0.001
meters → centimeters$0.001
meters → millimeters$0.001
meters → micrometers$0.001
meters → nanometers$0.001
meters → miles$0.001
+ 964 more in the full catalog

skill-pack

Skill: Earnings deep-dive$0.05
Skill: Options analytics$0.05
Skill: Fixed-income desk$0.05
Skill: DeFi protocol scanner$0.05
Skill: Security audit$0.12
Skill: Email deliverability$0.10
+ 86 more in the full catalog

data

US gov dataset search$0.003
US weather alerts$0.003
Recent earthquakes (USGS)$0.003
Geocode address$0.003
Reverse geocode$0.003
Place search$0.003
+ 85 more in the full catalog

crypto

Wallet balance (native + ERC-20)$0.002
ERC-20 token metadata$0.001
Token spot price (USD)$0.001
Wallet transaction history$0.002
NFT holdings for an address$0.002
NFT metadata lookup$0.001
+ 32 more in the full catalog

web

Extract article$0.01
Page metadata$0.002
Browser render$0.02
Screenshot$0.01
PDF to text$0.01
Web search$0.02
+ 22 more in the full catalog

conversion

JSON validate & format$0.001
JSON to CSV$0.002
CSV to JSON$0.002
YAML to JSON$0.002
JSON to YAML$0.002
XML to JSON$0.002
+ 22 more in the full catalog

text

Slugify$0.001
Case convert$0.001
Text statistics$0.001
Keyword extraction$0.002
Text diff$0.002
Regex test$0.001
+ 21 more in the full catalog

validation

Email validate$0.002
URL parse$0.001
IP info$0.002
User-agent parse$0.001
Color convert$0.001
Semver parse/compare$0.001
+ 15 more in the full catalog

encoding

Hash$0.001
HMAC$0.001
Base64$0.001
Hex$0.001
URL encode/decode$0.001
JWT decode$0.001
+ 14 more in the full catalog

network

DNS lookup$0.001
HTTP check$0.003
TLS certificate$0.003
Domain WHOIS (RDAP)$0.005
Robots.txt check$0.002
Sitemap reader$0.003
+ 10 more in the full catalog

payments

x402 quote$0.003
USDC balance$0.003
Transaction status$0.003
Gas price$0.002
Verify x402 settlement$0.004
Build USDC transfer authorization$0.003
+ 9 more in the full catalog

ai

LLM inference$0.01
LLM inference (Pro)$0.10
LLM inference (Premium)$0.50
Image generation$0.03
Image generation (HD)$0.10
Image generation (Premium)$0.30
+ 9 more in the full catalog

agents: GET https://agent402.tools/api/route?q=<task>&network=stellar

Sell on Stellar

Accept x402 payments with a stellar:pubnet accept in your 402 challenge — the Built on Stellar facilitator (OpenZeppelin) verifies and settles, gas sponsored. Use @x402/stellar for the wire, or agent402-tollbooth to paywall an existing site. Then serve /.well-known/x402 — the index crawler lists you automatically; ranking is health-based, listing is free. Want a guaranteed crawl? Open a seed request.

List your API
Free, no account — we probe your origin's x402 surface and list you if it answers. Ranking is health-based.

machine-readable: /api/route?network=stellar · /.well-known/x402 · /openapi.json · /api/reliability