nowfound

Alternatives

Products that do what P402.io does

Route, verify, and settle paid API calls with clear traces

  1. 1
    x402119

    An open protocol for internet-native payments from Coinbase

    2025

  2. 2
    SaveMRR104

    See how much you're losing to failed payments on Stripe

    Apr 2026

  3. 3

    Data APIs for AI agents & developers — free to start

    Feb 2026

  4. 4
    Cuely140

    Pay-as-you-go chatGPT Plus with 5M free token credits

    2023

  5. 5

    The internet-native payment standard for AI agents

    Mar 2026

  6. 6
    L402.org122

    Internet-native paywalls with HTTP 402 status code

    2024

  7. 7

    OAuth 2.1 + usage-based Stripe billing for MCP servers

    Jul 2026 · mcp-billing.com

  8. 8
    Agentcard125

    Give a debit card to your AI agent

    Apr 2026

  9. 9

    Track AI CLI spending across Claude, Codex & Gemini in 40ms

    Feb 2026

  10. 10
    Orite76

    Give your AI Agent money. Not a blank check.

    30d ago · orite.tech

  11. 11
    Agihalo68

    LLM Router for A.I Agent & Saas with x402

    Jan 2026

  12. 12
    x4021

    Self-funding AI agents via HTTP 402 - no cards, no accounts

    20d ago · x402-ai-agent.space

  13. 13

    Verify agent payment endpoints before your AI spends

    Aug 2026 · agentmint-verify.lasting-design-mail.workers.dev

  14. 14

    New Age. Instant. <$1 Verification.

    2025

  15. 15MJ
  16. 16

    The API marketplace where the badge means I paid for it

    26d ago · payapi.market

  17. 17MS

    As a consultant I foot my own Cursor bills, and last month was $1,263. Opus is too good not to use, but there's no way to cap spending per session. After blowing through my Ultra limit, I realized how token-hungry Cursor + Opus really is. It spins up sub-agents, balloons the context window, and suddenly, a task I expected to cost $2 comes back at $8. My bill kept going up, but was I really going to switch to a worse model? No. So I built l6e: an MCP server that gives your agent the ability to budget. It works with Cursor, Claude Code, Windsurf, Openclaw, and every MCP-compatible application.…

    Apr 2026 · l6e.ai

  18. 18OY

    Hey HN, I pay for ChatGPT, Claude, Cursor, and use Gemini through work. Four vendors, four separate conversation histories, four profiles of how I think. None of them talk to each other. Switch providers and you start over. So I built a system where the memory is mine. I run a knowledge graph in Postgres (Supabase, free tier) with pgvector for semantic search. A small MCP server reads and writes to it. That server sits behind an MCP Gateway on a $6&#x2F;month VPS, along with Brave Search and a GitHub server. TypingMind connects to the gateway as a BYOK client -- any model, any device, same…

    Mar 2026 · github.com

  19. 19TT

    I built this after hitting the same wall repeatedly — no good way to enforce token budgets in application code. Provider caps are account-level and tell you what happened, not what is happening. Two ways to add it: # Direct client wrapper client = tokencap.wrap(anthropic.Anthropic(), limit=50_000) # LangChain, CrewAI, AutoGen, etc. tokencap.patch(limit=50_000) Four actions at configurable thresholds: WARN, DEGRADE (transparent model swap), BLOCK, and WEBHOOK. SQLite out of the box, Redis for multi-agent setups. One design decision worth mentioning: tokencap tracks tokens, not dollars. Token…

    Apr 2026 · github.com

  20. 20IM

    Hey HN! Thank you for all the support and feedback on my original submission 2 months ago. I've been improving the backend using a MCTS&#x2F;AlphaZero approach and it's currently producing much better results. My long term goal is to allow users to manage multiple projects, deployed autonomously, both from scratch and by making continual updates all prompted with natural language. The cost of each project has been lowered to $9 as performance with smaller models has improved (I migrated from Claude-3-Opus to gemini-1.5-flash). Thanks for checking it out!

    2024 · saas-quick.com

  21. 21ES

    Are you spending hundreds of dollars a month on AI coding costs? I built European Swallow AI, an API that uses reasoning models (Claude, Deepseek) for thinking and cheaper specialized coding models (Qwen, Grok) to write code, so you can save token costs while still getting high quality code. With an OpenAI formatted endpoint you can try European Swallow in Cursor, Typing Mind, Xibe AI and your own custom apps. During testing, European Swallow scored 80.5% on Big Code Bench and over 90% on the HumanEval+. It averaged $2.60 per million tokens compared with the $15 per million output tokens of…

    Oct 2025 · europeanswallowai.com

  22. 22SP

    Hi HN users, we've built a simple add-on which allows website owner to individually paywall content. Add-on allows website visitor to micropay anywhere between 5 to 15 cents to access a paywalled content. Check up an explanatory GIF at: https:&#x2F;&#x2F;zen.market Ad-generated revenue keeps falling. Some publishers have installed soft paywalls which push website visitors to start monthly subscriptions. However, the way paywalls are usually implemented is unfriendly and discourages visitors from paying. Most publishers report that only 0.1-0.3% of their site's visitors become paying…

    2016

  23. 23AT

    Hey HN, I’m the founder of SyncAI. Previously, I was building internal tools for a fintech startup. We tried using GPT-4 Vision and various OCR APIs to automate our Accounts Payable. They worked great for ~90% of documents. The problem was the other 10%: crumpled receipts, handwritten delivery notes, or invoices with weird layouts. In fintech, a 90% success rate isn’t automation; it’s a liability. We spent more time fixing the AI’s hallucinations than if we had just typed it manually. I realized that for high-stakes operations, we didn’t need "better AI"—we needed a Safety Layer. So I built…

    Jan 2026 · sync-ai-11fj.vercel.app

  24. 24WB

    Hey HN: Kaveh here, founder of https:&#x2F;&#x2F;www.usage.ai&#x2F; We help companies drive down AWS, GCP, and Azure spend. Why? Because the way it's done now is a pain. DevOps and Software Engineers end up spending time managing costs rather than focusing on business problems. I have been building Usage AI for almost 4 years now (4 year anniversary in 1 month from now!) with an incredible group of founding people. We started as a product just to help lower AWS EC2 costs, and now we do all major AWS services (such as RDS, OpenSearch, ElastiCache, and Redshift with more on the way) and other…

    2024

Ranked by how close each launch is in meaning, then by votes. Refine with a description →