# P402.io

According to OpenAITools.app telemetry verified on 2026-11-11, P402.io (p402.io) is an AI platform indexed under AI Agent generating 0 monthly visits with a month-over-month traffic delta of +0 (0%). Its primary geographic market is Global (— traffic share), and it operates on a Freemium, Paid pricing model. Top competing alternatives by monthly volume include Paid (20.36K visits/mo), Zero (6.83K visits/mo), OpenServ (5.33K visits/mo).

Meter, attribute, and govern every AI request — with optional x402 crypto settlement on Base.

## Key Telemetry & Specifications

| Metric | Value |
| :--- | :--- |
| Tool Name | P402.io |
| Handle | p402-io |
| Status | active |
| Origin | independent |
| Maintenance | active |
| Official Domain | p402.io |
| Website URL | https://p402.io |
| Categories | AI Agent, AI Crypto, Blockchain, AI API |
| Pricing Model | Freemium, Paid |
| Monthly Visits | 0 |
| MoM Traffic Change | 0 |
| MoM Growth Rate | 0% |
| Primary Market | Global |
| Market Share | — |
| Direct Visits | 0 |
| Organic Search Visits | 0 |
| Social Visits | 0 |
| Referral Visits | 0 |
| Email Visits | 0 |
| Review Score | 4.1 |
| Saved Count | 0 |
| Supported Platforms | Website |
| Billing Platforms |  |
| Attributes | Pricing: Contact for Pricing; Features: Website |
| Tags | x402, HTTP 402, Payment API, Micropayments, Crypto Payments, Stablecoin Payments, Base Blockchain, USDC, USDT, API Monetization, Agent Infrastructure, Payment Routing, FinTech, Spend Controls |

## Overview

P402.io positions itself as "AI spend accountability infrastructure." Instead of waiting for a monthly provider invoice that shows only a lump total, P402 records each AI request at the moment it happens and attaches ownership: which customer, feature, workflow, department, or employee triggered it, which model and provider served it, how many tokens were used, what it cost, whether it stayed inside budget, and what the policy verdict was. The result is a live ledger rather than a retrospective bill.

The platform is metadata-only by default, meaning prompts and responses are never stored; there are five selectable privacy modes ranging from metadata-only to full-trace opt-in. It installs as a VS Code/Cursor/Windsurf extension with an embedded MCP server, as an MCP server for Claude Desktop and JetBrains, or as an OpenAI-compatible REST endpoint and SDK — you change the base URL and API key and existing code keeps working. A routing engine then selects the cheapest adequate model per call across a large model catalog, which is how savings are realized in practice.

Alongside accountability, P402 ships an optional payment rail: it implements x402-style HTTP 402 payments with gasless USDC transfers on Base mainnet using EIP-3009 transferWithAuthorization, a multisig treasury, and edge verification across many regions. Teams that only want metering and attribution can skip settlement entirely, so the product serves both FinOps-minded engineering teams and agent builders who need budgets, receipts, and payment traces for autonomous workloads.

## Pricing & Plans

Free Sandbox tier covering 25,000 metered events per month with 14-day retention. Self-serve paid plans: Build at $49/month (250k events, 30-day retention) and Growth at $199/month (2M events, 90-day retention). Scale is $799/month on annual contract (20M events, 1-year retention), and Enterprise starts from $60,000 ARR with SSO/SAML, SCIM, custom retention, and SLAs. One-time expert engagements run from a $2,500 AI Spend Audit up to $50,000+ regulated pilots. Optional settlement is priced at 0.5% of settled value with a $500/month minimum.

## Key Features & Capabilities

- **Event-level AI cost ledger:** Every AI request becomes a record with owner, workflow, model, provider, token count, cost, budget state, policy result, and evidence status — so spend is attributed at the moment it happens instead of after the invoice arrives.
- **Metadata-only privacy modes:** Prompts, responses, and raw traces are rejected at the API boundary by default. Five privacy modes scale from metadata-only up to explicit full-trace opt-in for teams that need deeper debugging.
- **OpenAI-compatible routing:** Point your existing OpenAI-style code at a new base URL and P402 routes each call to the best cost/speed/quality model, with a full audit trail and semantic caching available.
- **x402 micropayments and USDC settlement:** Optional payment rail implementing HTTP 402 flows with gasless USDC on Base mainnet via EIP-3009, 3-of-5 multisig treasury controls, and a global edge verification network.
- **Budgets, mandates, and evidence export:** Set customer and agent budgets, enforce margin floors, cryptographically constrain agent spend with mandates, and export finance reports or evidence bundles for audit.

## Primary Use Cases

- **Find hidden AI COGS and retry waste (AI product engineer):** Attribute spend to specific features and customers, surface duplicate retries and context bloat, and see cost per accepted output so pricing decisions stop being guesswork.
- **Make department and vendor AI spend visible (FinOps / finance lead):** Roll up AI spend by department, employee, workflow, model, and vendor, then export reports that reconcile against provider invoices.
- **Give autonomous agents budgets and receipts (Agent builder):** Constrain each agent's spending with mandates and back every payable AI work item with receipts and settlement records.
- **Produce audit-grade evidence (Regulated workflow operator):** Track cost alongside review status and privacy mode, then export evidence bundles and event proofs for compliance review.

## Strengths

- Attributes AI cost to the exact owner, feature, and workflow while the request is still fresh
- Metadata-only default with no prompt storage removes a major compliance objection
- Drop-in OpenAI-compatible API means migration requires only a base URL and key change
- Optional gasless USDC settlement on Base is real production infrastructure, not a testnet demo
- Transparent published event-based pricing with alerting and optional hard caps

## Limitations

- Cost-savings claims are deliberately withheld until baselines and post-period measurement exist, so ROI is not immediate or obvious
- Scale and Enterprise are annual-contract only, which rules out short experiments at the top tier
- Settlement economics start at a $500/month minimum for customers who want the payment rail

## Frequently Asked Questions

### Does P402 store my prompts or model responses?
No. P402 is metadata-only by default and rejects prompts, responses, request bodies, and completion text at the API boundary through a forbidden-field scan. Five privacy modes exist, from metadata-only up to an explicit opt-in full-trace mode, so you choose how much detail is retained.

### How is billing measured?
P402 bills on metered AI events — one unique provider-bound, meter-only, or policy-evaluated AI request per tenant per billing period. Outcome records, dashboard views, audit exports, and admin actions are never billed, and alerts fire at 50%, 80%, 100%, and 120% of included usage.

### Do I have to use the crypto payment layer?
No. The accountability layer works independently of settlement. Settlement is an optional add-on for teams that want on-chain payment for AI services through x402 and USDC on Base.

### Is P402 affiliated with OpenAI or the model providers it routes to?
No. P402 is an independent third-party infrastructure platform that provides an OpenAI-compatible interface; it is not produced or endorsed by the model vendors whose models it can route between.

### What is P402.io's monthly traffic and growth trend?
P402.io currently receives 0 monthly visits, with a month-over-month traffic change of +0 (0% growth rate). Its primary source market is Global (— share), including 0 direct visits/mo and 0 organic search visits/mo.

### Is P402.io free? What is its pricing model?
P402.io operates on a Freemium, Paid pricing model. Free Sandbox tier covering 25,000 metered events per month with 14-day retention. Self-serve paid plans: Build at $49/month (250k events, 30-day retention) and Growth at $199/month (2M events, 90-day retention). Scale is $799/month on annual contract (20M events, 1-year retention), and Enterprise starts from $60,000 ARR with SSO/SAML, SCIM, custom retention, and SLAs. One-time expert engagements run from a $2,500 AI Spend Audit up to $50,000+ regulated pilots. Optional settlement is priced at 0.5% of settled value with a $500/month minimum. Supported billing and checkout platforms include: not listed.

### What are the best P402.io alternatives in 2026?
Based on OpenAITools.app category traffic and feature fit, the top five alternatives to P402.io are: 1. Paid (20.36K visits/mo); 2. Zero (6.83K visits/mo); 3. OpenServ (5.33K visits/mo); 4. ChainGPT (71.16K visits/mo); 5. Tokenomy.ai (5.32K visits/mo).

### Which platforms and core AI capabilities does P402.io support?
P402.io is classified under AI Agent, AI Crypto, Blockchain, AI API, supports the following platforms: Website, and its core capability tags include: x402, HTTP 402, Payment API, Micropayments, Crypto Payments, Stablecoin Payments.

## Alternatives

| Tool Name | Monthly Visits | Pricing Model | Compare |
| :--- | :--- | :--- | :--- |
| [Paid](https://openaitools.app/tool/paid-ai) | 20,361 | Free Trial, Contact for Pricing, Free | [Compare](https://openaitools.app/compare/p402-io-vs-paid-ai) |
| [Zero](https://openaitools.app/tool/zero-xyz) | 6,827 | Free, Paid | [Compare](https://openaitools.app/compare/p402-io-vs-zero-xyz) |
| [OpenServ](https://openaitools.app/tool/openserv) | 5,329 | Freemium | [Compare](https://openaitools.app/compare/openserv-vs-p402-io) |
| [ChainGPT](https://openaitools.app/tool/chaingpt) | 71,157 | Freemium | [Compare](https://openaitools.app/compare/chaingpt-vs-p402-io) |
| [Tokenomy.ai](https://openaitools.app/tool/tokenomy-ai) | 5,320 | Freemium | [Compare](https://openaitools.app/compare/p402-io-vs-tokenomy-ai) |
| [Surf](https://openaitools.app/tool/surf) | 116,252 | Free, Pro, Max, API credits | [Compare](https://openaitools.app/compare/p402-io-vs-surf) |
| [Peak AI](https://openaitools.app/tool/peak-ai) | 50,145 | Paid, Contact for Pricing | [Compare](https://openaitools.app/compare/p402-io-vs-peak-ai) |
| [Paperclip](https://openaitools.app/tool/paperclip-ing) | 533,830 | Free | [Compare](https://openaitools.app/compare/p402-io-vs-paperclip-ing) |
| [ATXP](https://openaitools.app/tool/atxp) | 106,839 | Freemium | [Compare](https://openaitools.app/compare/atxp-vs-p402-io) |
| [AnChain.AI](https://openaitools.app/tool/anchain-ai) | 4,830 | Contact for Pricing | [Compare](https://openaitools.app/compare/anchain-ai-vs-p402-io) |
| [XenonStack](https://openaitools.app/tool/xenonstack) | 52,808 | Contact for Pricing | [Compare](https://openaitools.app/compare/p402-io-vs-xenonstack) |
| [ZeroClick](https://openaitools.app/tool/zeroclick) | 7,747 | Freemium | [Compare](https://openaitools.app/compare/p402-io-vs-zeroclick) |

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Source: https://openaitools.app/tool/p402-io