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#53 of 53Developer tools

CrowdSpark Agent Tools (41 x402 tools built with Grok Bot)

Pay-per-call utilities for AI agents over x402, $0.001 to $0.05 in USDC on Base

Grok BotNash (@NashBriggsy)Updated 2026-10-27Visit site ↗
agents.crowdspark.meCrowdSpark Agent Tools (41 x402 tools built with Grok Bot) website screenshot
Reported revenue · first 5 days$0.14Self-reportedcost $30 Est.
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TL;DR

Nash (@NashBriggsy) uses Grok Bot to ship one small pay-per-call tool for AI agents every weekday and sells them over x402 for $0.001 to $0.05 in USDC on Base. By Oct 29, 2026 there were 41 tools and tens of thousands of requests a day, but almost every paid call came from his own test wallet or from monitor bots. Outside wallets had paid 66 times for $0.14 in total by Oct 27 [1][2][3].

Revenue from outside wallets$0.14 (66 payments, by Oct 27)[1]
Tools live41 (Oct 29, 2026)[5]
Requests in 24 hours21,344 (Oct 29)[3]
Paying customers in that window0 (13 paid calls: 12 his own tests, 1 a monitor bot)[3]
Tools that made $033 of 40[4]
Price per call$0.001 to $0.05 USDC[6]

What does CrowdSpark Agent Tools (41 x402 tools built with Grok Bot) sell, and to whom?

Pay-per-call utilities for AI agents over x402, $0.001 to $0.05 in USDC on Base.

Other people's AI agents that need small checks inside a loop: email and domain checks, PDF and OCR reading, currency rates, web-page-to-markdown, token and wallet lookups, prompt-injection and PII screens [6].

How was CrowdSpark Agent Tools (41 x402 tools built with Grok Bot) built?

Grok Bot writes and ships the tools; Nash runs several Grok Bot agents with one job each (a morning brief, replies, and one new paid tool every weekday) [7][10]. The tools sit on agents.crowdspark.me behind x402: the server answers HTTP 402 with the price, the calling agent pays in USDC on Base and retries. There is a catalog JSON, an OpenAPI file, an MCP server and an llms.txt for agents, and failed calls aren't charged [6]. New tools go from code to live on 4 listings in about 6 minutes [11].

Grok Botx402USDC on BaseCloudflareMCP

What is the business model?

Pay per call, no accounts or API keys: $0.001 for an fx rate up to $0.05 for a full dependency audit. On Oct 30 six tools got a free tier of 25 calls a day per IP to let agents try before paying [6][12].

Where does the traffic come from?

x402 directories and listings (including FluxA AgentMarket), the MCP server, llms.txt, a free 'x402 Agent Payments Tracker' page on crowdspark.me that links to the tools, and daily build-in-public posts on X with the raw receipts [6][9][12].

What revenue has CrowdSpark Agent Tools (41 x402 tools built with Grok Bot) reported?

Reported revenue: $0.14 from outside wallets (first 5 days), per @NashBriggsy day 5 receipts (X) (2026-10-27).

  1. 2026-10-22First paid tools go live on x402 [2]
  2. 2026-10-2619 tools, 23,854 requests, 98 paid calls: 52 his own tests, 46 from 9 outside wallets for $0.0875 [2]
  3. 2026-10-27Day 5: 32 tools, 36,874 requests, 151 paid; outside wallets paid 66 times, $0.14 total [1]
  4. 2026-10-2818,861 requests and 21 paid calls in a day; 18 were monitors, 3 his own wallet [7]
  5. 2026-10-2921,344 requests in 24 hours, 0 paying customers; tool #41 (paper search) ships [3]
  6. 2026-10-30Free tier added for six tools; dependency_audit ships at $0.05 [12]

What does the agent do, and what does the human do?

Agent
  • Writes, tests and deploys a new paid tool every weekday
  • Lists each tool on x402 directories and the MCP catalog
  • Keeps a call log (wallet, tool, timestamp) and reports what it did
  • Drafts the daily morning brief and replies on X
Human
  • Picks the direction and decides what to build next
  • Funds and runs the test wallet
  • Posts the daily receipts on X and answers questions
  • Spots bugs, such as a paid call logged with no wallet

What does it cost to run?

Not disclosed. The tools run on Cloudflare (a shared-IP rate limit on a paper API forced a paid key) [5].

What worked and what didn't?

Worked
  • Shipping is fast: 41 tools in about a week, about 6 minutes from code to 4 listings [5][11]
  • Agents do find the tools: 25 new bots discovered them in one day [8]
  • The boring tools get called most: fx_rates led with 1,285 requests in a day [4][13]
Didn't
  • Outside wallets paid $0.14 in total by Oct 27, mostly monitor bots checking the seller is real [1]
  • On Oct 29 there were 21,344 requests and 0 paying customers; 1,886 asked for URLs that don't exist [3]
  • 33 of 40 tools made $0 [4]
  • No outside buyer has paid a second time [14]

How do you replicate CrowdSpark Agent Tools (41 x402 tools built with Grok Bot)?

  1. Count only strangers who pay twice; requests and monitor payments are vanity
  2. Price the 402 reply so agents can inspect the offer without paying
  3. Give agents a small free tier so they can test before they spend
  4. Make a real paid call after every deploy, not just a health check

What are the risks and the moat?

Almost all traffic is bots: crawlers, uptime probes and x402 testers. Revenue figures are Nash's own posts, not an audited ledger, and his receipts already had one logging bug. The x402 agent-payments market is still a pilot-stage niche, and his tracker page says the team has a stake in it [9].

FAQ

How much has CrowdSpark Agent Tools made?

Outside wallets paid 66 times for $0.14 in total by Oct 27, 2026, and most of those were monitor bots [1].

What does it sell?

42 small pay-per-call tools for AI agents, $0.001 to $0.05 a call in USDC on Base [6].

Who builds the tools?

Grok Bot. Nash says all of them were built with Grok Bot, one new tool per weekday [7][10].

Why so little money with so much traffic?

Most requests come from bots that check prices or uptime and never buy; on Oct 29, 13 calls were paid and none came from a real customer [3].

Sources

  1. [1] Day 5 receipts: 66 outside payments, $0.14 (Oct 27, 2026)↗
  2. [2] Week 1: 19 tools, 23,854 requests (Oct 26, 2026)↗
  3. [3] 21,344 requests, 0 paying customers (Oct 29, 2026)↗
  4. [4] 33 of 40 tools made $0 (Oct 29, 2026)↗
  5. [5] Tool #41 shipped with Grok Bot (Oct 29, 2026)↗
  6. [6] Agent Tools llms.txt (checked Oct 30, 2026)↗
  7. [7] 18,861 requests, 21 paid; built with Grok Bot (Oct 28, 2026)↗
  8. [8] 25 new bots found the tools (Oct 28, 2026)↗
  9. [9] x402 Agent Payments Tracker↗
  10. [10] One bot per job, 40 tools built with Grok Bot (Oct 29, 2026)↗
  11. [11] 3 more tools, about 6 minutes to 4 listings (Oct 27, 2026)↗
  12. [12] Free tier for six tools (Oct 30, 2026)↗
  13. [13] fx_rates: 1,285 requests, 2 paid (Oct 30, 2026)↗
  14. [14] Zero outside buyers have repeated (Oct 29, 2026)↗
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Numbers come from the operators or the press and haven't been audited. Anything missing is marked "not disclosed". Methodology · Report a correction.