Outpimp

Outpimp is an x402-native service at https://x402.outpimp.com, indexed from the x402 Bazaar (Coinbase's public discovery directory). It charges callers itself in USDC on Base and is paid directly at its own wallet; Monex Protocol passes your request and payment headers through untouched. 12 endpoints listed.

Base

Offers

Offer	Endpoint	Price
AstronomyEphemeris Sunrise, sunset, solar noon, day length, and moon phase for a given latitude/longitude/date, computed via the suncalc library (standard solar/lunar position algorithms) — precise astronomical math an LLM cannot reliably compute mentally.	`/m/bz-x402-outpimp-com/astronomyEphemeris`	0.01 USDC
ChemicalElementLookup Periodic table element lookup by symbol or atomic number, returning name, atomic mass, and category. Covers the most commonly referenced elements.	`/m/bz-x402-outpimp-com/chemicalElementLookup`	0.01 USDC
ColorConvert Converts a color between hex, rgb, and hsl representations using exact arithmetic.	`/m/bz-x402-outpimp-com/colorConvert`	0.01 USDC
CronParse Computes the next N run times for a standard 5-field cron expression, avoiding the mental cron-schedule simulation an LLM often gets subtly wrong.	`/m/bz-x402-outpimp-com/cronParse`	0.01 USDC
DiffText Line-based diff between two strings using the Myers diff algorithm (via the diff/jsdiff library), returning a list of equal/add/remove operations.	`/m/bz-x402-outpimp-com/diffText`	0.01 USDC
JsonSchemaValidate Validates a JSON document against a JSON Schema using the industry-standard ajv validator, returning whether it is valid and a list of human-readable error messages if not.	`/m/bz-x402-outpimp-com/jsonSchemaValidate`	0.01 USDC
JwtDecode Decodes (does not verify) a JWT by base64url-decoding its header and payload segments. Signature validity is never checked — do not use this to authenticate a token.	`/m/bz-x402-outpimp-com/jwtDecode`	0.01 USDC
PhysicalConstants Lookup of standard physical constants (speed of light, gravitational constant, Planck constant, elementary charge, Avogadro number, Boltzmann constant, gas constant, electron mass) with exact published CODATA values.	`/m/bz-x402-outpimp-com/physicalConstants`	0.01 USDC
QrCodeGenerate Generates a QR code for the given text, returned as a base64-encoded PNG data URL, computed entirely locally with no external service call.	`/m/bz-x402-outpimp-com/qrCodeGenerate`	0.01 USDC
RegexTest Tests a regular expression pattern against a string, guarded against catastrophic backtracking (ReDoS) by running the match in an isolated worker thread with a hard 500ms timeout that fails closed.	`/m/bz-x402-outpimp-com/regexTest`	0.01 USDC
SemverCompare Compares two semantic version strings and reports which is greater, lesser, or equal, using the standard semver comparison rules.	`/m/bz-x402-outpimp-com/semverCompare`	0.01 USDC
UnitConvertScientific Scientific unit conversion for pressure, energy, and molarity using exact conversion factors.	`/m/bz-x402-outpimp-com/unitConvertScientific`	0.01 USDC

Machine-readable: openapi.json with x-payment-info offers.

Try it live

Run the full MPP flow from your browser: catch the 402, sign the payment with your wallet, and watch it settle on-chain.

This merchant settles over the mppx rail; pay it from an agent with the snippet below.

Pay with an agent

Any MPP or x402-compatible client works. With mppx, payment is automatic:

import { Mppx, evm } from 'mppx/client'
import { privateKeyToAccount } from 'viem/accounts'

const mppx = Mppx.create({
  methods: [evm({
    account: privateKeyToAccount(process.env.KEY),
    currencies: [evm.assets.base.USDC],
  })],
})

const res = await mppx.fetch('https://api.meshgateway.co/m/bz-x402-outpimp-com/astronomyEphemeris')
// 402 challenge signed and settled automatically; response includes Payment-Receipt

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/bz-x402-outpimp-com/astronomyEphemeris
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …