# Reported issues for x402-mcp

Pod holds 9 of 9 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded entirely — a maintainer's release checklist is not a warning to a prospective user.

Back to [x402-mcp](/mcp/x402-mcp).

## Most discussed

### [content] Hands-on tutorial: calling a live x402 micropayment API from an AI agent

Write our own tutorial (900-1500 words, code included) walking through paying for and consuming the live Pulse endpoint ($0.05) from an AI agent — 402 challenge, USDC payment, final data. Publish free on our own channel (README, blog, dev.to).

**Why hot:** x402/agentic payments are widely discussed right now; beginner-friendly, code-verified walkthroughs are scarce.
**Distribution payoff:** evergreen SEO/collateral pointing at our own Pulse endpoint as the worked example.
**Source:** drafted by

[Read the thread](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues/14) · 2026-07-25 · open · 3 comments

### bounty: $0.01 USDC — live x402 verification call to payTo

## Settlement

- Amount: **$0.01 USDC** (10_000 atomic) via the **already-live machine cashier**
- Network: Base `eip155:8453`
- Asset: `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`
- payTo: `0xAB745e5F576667037696e78ba7dA28E193E4423D`

This issue does **not** need a new code file. Paying the live endpoint **is** the delivery.

## Public spec

1. Unpaid GET `https://x402-mcp.onrender.com/us/mn/property-check?address=1700+Penn+Ave+N` → HTTP 402.
2. Free control GET `https://x402-mcp.onrender.com/m

[Read the thread](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues/497) · 2026-08-26 · closed · 2 comments

### bounty: $25 USDC — add-only docs/LIVE_LEDGER.md

## Settlement

- Amount: **$25 USDC** (25_000_000 atomic)
- Network: Base `eip155:8453`
- Asset: `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`
- payTo: `0xAB745e5F576667037696e78ba7dA28E193E4423D`
- Pay: USDC on Base to payTo, comment `FUNDED` + BaseScan URL

Protocol: https://github.com/kwizzlesurp10-ctrl/x402-mcp/blob/master/docs/BOUNTIES.md

## Public spec (add-only)

Create **new** file `docs/LIVE_LEDGER.md`. Honest numbers including zeros and bad weeks. Do not rewrite dashboard code.

Minimu

[Read the thread](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues/496) · 2026-08-26 · open · 1 comment

### bounty: $15 USDC — add-only docs/BAZAAR_AUDIT.md

## Settlement

- Amount: **$15 USDC** (15_000_000 atomic)
- Network: Base `eip155:8453`
- Asset: `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`
- payTo: `0xAB745e5F576667037696e78ba7dA28E193E4423D`
- Pay: USDC on Base to payTo, comment `FUNDED` + BaseScan URL

Protocol: https://github.com/kwizzlesurp10-ctrl/x402-mcp/blob/master/docs/BOUNTIES.md

## Public spec (add-only)

Create **new** file `docs/BAZAAR_AUDIT.md`. Do not change discovery code.

For each discoverable paid/free resource (city catal

[Read the thread](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues/495) · 2026-08-26 · open · 1 comment

### [demo] Wire /base/tx-decision into a Base trading-bot submission loop (reference wrapper)

Write a small reference wrapper (Python/TS) around https://x402-mcp.onrender.com/base/tx-decision ($0.01/call) that a Base bot calls before submitting each tx to decide submit-now-vs-wait + EIP-1559 sizing. Include a minimal (can be stubbed/simulated) example bot loop calling it at least 3x against real current Base gas conditions, logging the decision + fee params.

**Why hot:** direct code-level integration of a paid decision API into an agent's tx loop is the frontier use case for x402 right 

[Read the thread](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues/21) · 2026-07-25 · closed · 1 comment

### 💰 External sale: $0.0100 USDC from 0xc22c17fc… [evt:23eeb7eb2b]

A wallet that is not ours paid the storefront.

- **Amount:** $0.010000 USDC
- **From:** `0xc22c17fca624db679b2471f2bb099e1e29a46209`
- **To (pay_to):** `0xab745e5f576667037696e78ba7da28e193e4423d`
- **Tx:** https://basescan.org/tx/0x57cfa9009e6bb878c66bb5e8ce3809dc330bd3f6f5cb331a61418c367297869c
- **Block:** 50482768

This is a real external purchase — the first-ever was 0xadacdfdd on 2026-07-22 (old $0.25 Pulse). Cross-check /ledger/revenue and /demand to see which product and client class. C

[Read the thread](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues/489) · 2026-08-26 · open · external user · 0 comments

### Live third-party x402 seller (MCP in-band, PayAI facilitator) available for buyer-side testing

Disclosure: base-tx-explain is our own service. Filing this because your buyer side may want an unaffiliated live seller to test against.

We run a paid MCP server at https://base-tx-explain.fly.dev/mcp. One tool, `explain_transaction(tx_hash)`: deterministic decode of a Base mainnet transaction to strict JSON. 10 free calls per client, then $0.02 USDC on Base via x402 v2. The difference from your storefront: payment is in-band at the MCP layer. `tools/call` returns the challenge, the retry carr

[Read the thread](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues/482) · 2026-08-20 · open · external user · 0 comments

### [demo] Minimal MCP client (<200 lines) that pays for a tool call via x402

A small standalone Python or TS script: connect to x402-mcp, discover the paid tool, handle the 402 challenge, settle on Base mainnet, print the result + tx hash. Publish with a README + demo log.

**Why hot:** very few open reference implementations wire MCP discovery to an x402 payment handshake.
**Distribution payoff:** a forkable reference client other agent developers can point at our endpoints directly — the same 'direct integration' lever as the BankrBot/ClawRouter outreach.
**Source:** d

[Read the thread](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues/16) · 2026-07-25 · open · 0 comments

## Most recent

### [demo] Minimal open-source demo: pay our MCP server for a tool call via x402

Build a small OSS demo connecting an MCP client to io.github.kwizzlesurp10-ctrl/x402-mcp, discovering its tools, and completing one real paid call end-to-end on Base mainnet. Publish as a public repo.

**Why hot:** MCP + x402 wired together end-to-end is barely documented anywhere.
**Distribution payoff:** concrete proof-of-integration collateral for outreach/registry visitors.
**Note:** reading the source first matters here — the public host is seller-only (no EVM_PRIVATE_KEY), so the buyer-sid

[Read the thread](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues/15) · 2026-07-25 · open · 0 comments

The remaining reports are on [the project's issue tracker](https://github.com/kwizzlesurp10-ctrl/x402-mcp/issues).