Tokenplans

Tokenplans is an x402-native service at https://api.tokenplans.dev, 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. 3 endpoints listed.

Base

Offers

Offer	Endpoint	Price
Changelog Full Append-only JSON ledger of every value-relevant change to tracked AI coding plans: price moves, usage-ceiling and rate-limit changes, model additions and removals, plan launches and discontinuations, subscriber-affecting policy changes. Each entry dated, with old/new values, source URL, and verification date. Use it to track how plan value shifts over time.	`/m/bz-api-tokenplans-dev/changelog/full`	0.1 USDC
Cost Rules Per-provider JSON cost rules for computing requests-per-dollar on AI coding plans: per-token USD rates or credit budgets with per-model rates, 5h/weekly credit limits, monthly per-model caps, and confidence levels (exact/proxy). The input dataset for a subscription cost calculator.	`/m/bz-api-tokenplans-dev/cost-rules`	0.1 USDC
Plans Full Full JSON catalog of verified AI coding-subscription plans across 28 providers (Claude, OpenAI, Cursor, Gemini, and more). Each record: monthly price and cadence, included models, usage ceilings and rate-limit windows, coding-tool lock-in, and pricing provenance with lastChecked dates. Use it to pick the right plan for an agent workload or to compare providers.	`/m/bz-api-tokenplans-dev/plans/full`	0.1 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-api-tokenplans-dev/changelog/full')
// 402 challenge signed and settled automatically; response includes Payment-Receipt

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/bz-api-tokenplans-dev/changelog/full
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …