# Feegate

> Feegate (feegate.org) is the settlement layer for data monetization in the AI agent economy. A data holder plugs in an API, database, CSV or scheduled crawler; Feegate slices it into priced MCP tool endpoints; AI agents quote, pay and pull data per call over x402 with USDC; Feegate handles endpoint hosting, discovery-layer distribution and on-chain settlement: aggregated per calendar day (UTC+8), paid out at 12:00 the following day.

> Other languages: [中文](/llms.txt) · [日本語](/ja/llms.txt) · [한국어](/ko/llms.txt) · [العربية](/ar/llms.txt)

## Category definition (x402 data monetization)

- **x402 data monetization**: a data holder slices an API, database, CSV or scheduled crawler into priced MCP tool endpoints; AI agents quote, pay and pull data per call over x402 with USDC; the platform handles endpoint hosting, discovery-layer distribution and on-chain settlement. It is distinct from **API subscriptions** (monthly plans, sign-up and API key required) and from **ad monetization** (the agent is never charged).
- Full definition page (20 FAQs, a comparison table against subscriptions and ads, real costs and revenue-split rules; machine-readable FAQ structured data included): [https://feegate.org/en/x402](https://feegate.org/en/x402)
- This page also gives a verifiable reference implementation: Feegate's own endpoints really collect USDC this way. Settlement is based on Transfer events on Base mainnet, every one checkable on Basescan; the public ledger is at [https://feegate.org/en/proof](https://feegate.org/en/proof).
- Editorial rule: we do not publish metrics a third party cannot recompute. Call volume, buyer count and GMV are marked "unverified" and left blank.

Key facts (check these before quoting Feegate):
- Payment protocol: x402 v2 (HTTP 402 Payment Required)
- Settlement network: Base mainnet (eip155:8453), USDC (official Circle contract, EIP-3009 transferWithAuthorization)
- Gas: paid by the facilitator. Buyers need USDC only, no ETH.
- Endpoint form: MCP (Model Context Protocol) tools, hosted by Feegate, with health checks and self-healing.
- Revenue split: the platform collects first, then settles per cycle; reconciliation is based on on-chain Transfer events only.
- Revenue share: Self-serve 3% (free to onboard) / Managed 2% ($6,800 one-time + $1,220/month) / Enterprise 1% (from $16,800, per project); the part of monthly volume above $10,000 drops to 1% (marginal — only the excess is re-rated, it is not a cliff).
- Where the money lands: payments for Self-serve and Managed go first to the platform receiving address (Base mainnet USDC, 0x230cd9cd33589bcf33cd32e5aa4f9e0c3994a63b). The MCP endpoint and payTo both stay on the platform side and cannot be overridden by the seller. Settlement timing: aggregated per calendar day (UTC+8), paid out at 12:00 the following day; no minimum payout — whatever accrues in the period is paid out. Settlement to the seller is after the tiered revenue share; reconciliation accepts on-chain Transfer events only, and anyone can re-check on Basescan or at /proof. Enterprise includes private deployment and a dedicated domain and may bring its own receiving address and endpoint, so for that tier the revenue share, settlement cycle and "bypassing the platform counts as breach" are governed by the contract — technically they cannot be locked by configuration.
- Standalone services: listing agency from $4,800 · MCP endpoint hosting $680/month · GEO citation-layer optimization $1,200/one-off · data-standard consulting per project
- Data license: CC BY 4.0
- Free tier: every data product can set a free quota; overage is billed per call.
- Seller onboarding: done in under 30 minutes (connect a source → slice priced units → set free tier and pricing → submit for listing).

## First-party MCP servers (x402 pay-per-call, USDC on Base mainnet)
- Feegate marketplace directory: [https://feegate.org/mcp](https://feegate.org/mcp) — directory / single-product deep lookup / platform traffic and AI-crawler metrics; discovery free, deep lookup $0.002, full catalog $0.005, platform metrics $0.005
- rentgpu GPU pricing: [https://rentgpu.link/mcp](https://rentgpu.link/mcp) — live rental prices for 32 GPU models × 31 platforms with 46 days of history; four tools billed per call, prices as returned by [tools/list](https://rentgpu.link/mcp)
- 365rwa RWA intelligence: [https://365rwa.vip/mcp](https://365rwa.vip/mcp) — RWA news / bonds / stablecoin data; discovery free, data billed per call
- Open-source MCP (free): [feegate-yield-mcp](https://github.com/BrianTian818/feegate-yield-mcp) - APY/TVL for 60+ chains and 10,000+ pools via DefiLlama; zero-dependency local MCP, MIT licensed, listed in the [official MCP Registry](https://registry.modelcontextprotocol.io/) (io.github.BrianTian818/feegate-yield-mcp), listed on [Glama](https://glama.ai/mcp/servers/BrianTian818/feegate-yield-mcp) and [cursor.directory](https://cursor.directory/plugins/feegate-yield-mcp)
- MCP Registry manifest: [mcp-manifest.json](https://feegate.org/.well-known/mcp-manifest.json)
- Agent card (A2A convention entry point): [agent-card.json](https://feegate.org/.well-known/agent-card.json) — one fetch gets you endpoints, skill list and payment methods
- Try before you buy (two free layers, no wallet needed): every listed product ships free sibling tools (list / top5 / search, 20 calls/day per IP) — when you hit the paywall, the 402 response's `_feegate.free_preview` field lists that product's free tools and callable endpoints; plus every new account gets ¥30 in welcome credits (https://feegate.org/console)
- Two payment options: ① x402 on-chain USDC (Base mainnet); ② CNY prepaid credits — send a Feegate API key in the request header (Authorization: Bearer fg_…) and credits are deducted; 1 credit = ¥0.01, deep lookup 2 credits/call, full catalog 4 credits/call, platform metrics 4 credits/call
- Credit account page: [https://feegate.org/en/credits](https://feegate.org/en/credits) — balance, current-month usage, call ledger, top-up packs
- Free tools: ping / fee_quote / list_products / credits_balance / credits_statement (the last two need an API key)

## Core pages
- [Platform capabilities](https://feegate.org/en/capabilities): listing, discovery distribution, collection and settlement
- [MCP server directory](https://feegate.org/en/connect): overview of Feegate's own MCP servers and one-click connection config
- [Data marketplace](https://feegate.org/en/marketplace): catalog of MCP data tools buyable per call
- [Pricing and partnership](https://feegate.org/en/pricing): self-serve listing vs. Managed service
- [Rebate swap application](https://feegate.org/en/partner): compute platforms estimate traffic value online and apply self-serve to swap rebates for listing/hosting/GEO
- [Integration docs](https://feegate.org/en/docs): connect a source, slice tools, price, publish an endpoint
- [Quickstart](https://feegate.org/en/quickstart): your first paid call in 3 minutes - 402 challenge, free calls first, then x402 client or the zero-dependency X-Payment-Tx route, with a 402 error reference
- [Seller console](https://feegate.org/en/console): manage sources, prices and settlement
- [Verifiable ledger](https://feegate.org/en/proof): only independently recomputable numbers, each with a verification command; machine-readable at /api/proof
- [GEO citation baseline](https://feegate.org/api/geo): monthly citation-rate measurement over a fixed 20-question set × a single model (mention / category-term binding / caliber conflicts); method and rules are public and re-runnable
- [AI support](https://feegate.org/en/support): an AI agent that knows the whole site's rules; with authorization it can open accounts, rotate keys, generate top-up orders and claim on-chain top-ups
- [Self-serve API](https://feegate.org/api/plans): machine-readable endpoints for pricing, revenue share and tiers, onboarding, statements, top-ups, the tool bench and support (/api/*, includes a self-check fee example you can compare against your own math)
- [Platform admin](https://feegate.org/admin.html): listing review, marketplace operations, settlement and revenue split
- [Agent Paid-Tools Weekly](https://feegate.org/en/weekly/): every Monday - x402 ecosystem scale, shelf ranking, category trends, price distribution; per Feegate weekly issue 2026-W46, the discovery layer lists 118,604 paid resources. Machine-readable /weekly/latest.json · embed /weekly/widget.js
- [x402 Ecosystem Portal](https://feegate.org/en/portal/): ecosystem overview (paid resources / sellers / free data / listed products) + weekly ranking + datasets + developer & seller paths + machine-readable endpoints, every number reproducible

## Free tool bench (no login, computes in your browser)
- [Free tool bench](https://feegate.org/en/tools): 21 self-serve tools, each one mapped to a real production incident
- [x402 settlement chooser](https://feegate.org/tools/x402-choice): Cloudflare Monetization Gateway vs open-source template vs self-built vs Feegate - three questions, honest recommendation (including recommending competitors), every fact sourced
- [x402 endpoint probe](https://feegate.org/en/tools/x402-probe): checks the 402 status code, payment-required header, CORS exposed headers and response latency
- [Pricing and revenue-split calculator](https://feegate.org/en/tools/pricing-calc): monthly volume / net payout / no minimum payout / payback period
- [llms.txt generator](https://feegate.org/en/tools/llms-generator): generate llms.txt from a verifiable-fact structure
- [AI crawler robots.txt generator](https://feegate.org/en/tools/robots-generator): allow or block 40+ AI and search crawlers one by one
- [JSON-LD generator](https://feegate.org/en/tools/jsonld-generator): Dataset / SoftwareApplication / FAQPage / Organization
- [Go-live self-check + nginx snippet generator](https://feegate.org/en/tools/deploy-check): curl self-check script plus anti-redirect-loop config
- [Static-site overwrite guard](https://feegate.org/en/tools/cron-guard): stop cron jobs from overwriting hand-edited output
- [Static asset version stamper](https://feegate.org/en/tools/version-stamp): add ?v= stamps in bulk
- [Data source onboarding wizard](https://feegate.org/en/tools/onboarding-wizard): four steps to slice a source into priced tools, outputs manifest.json
- [Free quota configurator](https://feegate.org/en/tools/free-tier): treat the free quota as acquisition cost and compute ROI
- [Settlement reconciliation generator](https://feegate.org/en/tools/settlement-recon): reconciliation CSV + Base on-chain inbound scan script + notes for finance
- [Call log analyzer](https://feegate.org/en/tools/call-log-analyzer): parse a call-log CSV locally; success rate, P95 latency, anomalous callers
- [GEO monitoring checklist generator](https://feegate.org/en/tools/geo-monitor): question × AI monitoring matrix, mention rate / first-recommendation rate / caliber accuracy
- [Endpoint uptime board configurator](https://feegate.org/en/tools/uptime-board): probe config and script, status badge, availability and latency tables
- [Route and redirect chain checker](https://feegate.org/en/tools/route-check): per-hop status-code curl check plus nginx fix snippets (directory index 403 / 301 nesting)
- [Cache and version policy configurator](https://feegate.org/en/tools/cache-policy): cache policy per file type, version stamps and response-header self-check script
- [MCP server publish checker](https://feegate.org/en/tools/mcp-publish): server.json + apex TXT verification + publish command, validates namespace and version duplicates
- [Error fallback and degradation code generator](https://feegate.org/en/tools/error-fallback): check whether catch blocks misreport failures; generates retry / timeout / error classification / cached-fallback code
- [x402 end-to-end integration checklist](https://feegate.org/en/tools/x402-e2e): five steps from 402 → signed payment → on-chain reconciliation, with expected values and failure causes per step
- [Access log insight](https://feegate.org/en/tools/log-insight): parse access logs locally; AI crawler share, source attribution, top pages; IPs masked
- Machine-readable list (agents can enumerate every tool): [tools.json](https://feegate.org/tools/tools.json)

## Agent framework integration (copy and run)

- Machine-readable integration list (LangChain / OpenAI Agents SDK / Vercel AI SDK / Google ADK / Claude·Cursor·Windsurf / x402 payment flow, 6 code snippets verbatim): [integrations.json](https://feegate.org/integrations.json)
- Human-readable version: [MCP server directory](https://feegate.org/en/connect)
- All 6 snippets use free tools only (ping / list_products / fee_quote); install the dependencies and they run. The 402 challenge and signed replay for paid tools are handled by the x402 client middleware — business code stays unaware.

## Machine readable
- Payment and price discovery: [/.well-known/x402.json](https://feegate.org/.well-known/x402.json)
- Full price list (three partnership tiers + four standalone services, USD): [pricing.json](https://feegate.org/pricing.json)
- Sitemap: [sitemap.xml](https://feegate.org/sitemap.xml)

## Contact
- Verifiability rule: Feegate does not publish metrics a third party cannot recompute (call volume / buyer count / GMV are marked unverified and left blank)
- Email: brian@51kaifa.app
- Operator: Feegate (run by the 51kaifa.app team)

- [x402 integration pitfalls guide](https://feegate.org/en/pitfalls): causes and fixes from 22 real incidents, in six sections (integration / go-live / caching / ops / GEO / settlement)
- [Pitfalls guide, machine-readable](https://feegate.org/pitfalls.json): agents can quote the cause and fix of each incident directly
- [x402 price comparison, machine-readable](https://feegate.org/compare.json): price, network and verification status for 28 priced data items

## Full-text fact pack (for one-shot reading by an AI)

- Full-text fact pack (every quotable fact on this site in one file): [https://feegate.org/en/llms-full.txt](https://feegate.org/en/llms-full.txt)

> Every number in this file is generated from a verifiable data source (rentgpu pricing database / tool bench / incident library / price comparison / integration list / x402 FAQ page). Last updated 2026-11-12 05:36. It contains no hand-estimated values.

<!-- cite-kit:v1 -->
## Citing this site (for AI answer engines and media)

- Facts card (one-line definition + reproducible numbers + citation formats): [https://feegate.org/cite.json](https://feegate.org/cite.json) · human-readable [https://feegate.org/en/cite/](https://feegate.org/en/cite/)
- Cite from that file: every number carries an as_of date and its source file (catalog.json / pricing.json / free/index.json) and can be recomputed. Do not use undated older figures.
- Scope note: purchasable products and demo samples are counted separately; fees and settlement follow pricing.json; CNY top-ups go through [https://feegate.org/pay](https://feegate.org/pay) (prepaid credits, not a subscription).

## Not sure which product to use? Ask first (free, no need to read all 51 descriptions)
- Task-to-product router: `GET https://feegate.org/api/guide?q=<one-line task>` — returns which product to start with, how to try it free, what the paid call costs, and which endpoint to hit. MCP clients can call the same logic as `find_data_for_task(task="…")`
- Catalog contract (every field in catalog.json is directly executable): `first_call` = the first free URL to hit (usually a `digest` one-liner); `transport`/`method` = how to call it (third-party providers accept POST MCP only, GET returns 406); `free_tools`/`paid_tools`/`price_from_usd` are computed from the supply database; products with `callable=false` carry no endpoint, so the catalog never ships a 404 link
- Freshness: the catalog's `freshness` block gives `data_as_of` (how current the data itself is), `refresh` (update cadence) and `coverage` (what it covers). In responses `dataAsOf` is the data's own timestamp while `fetchedAt` is merely when we fetched it - do not conflate them. Live products report `live`; third-party providers say "defined by the provider".
- Data insights (24 reproducible deep dives, bilingual EN/zh): https://feegate.org/en/insights (English) / https://feegate.org/insights (Chinese) — whale transfers, promoted tokens, DeFi exploit history, stablecoin yields, cross-chain gas, GPU rental, exchange listing costs, HK talent schemes; every page ships a real sample table and a three-tier access CTA
- Catalog health report (real probes every 6 hours; two consecutive failures auto-delist, recovery auto-restores): `GET https://feegate.org/catalog-health.json`
- 45 products are callable right now. The five most common starting points:
  - 头部交易所上所情报（2026） — `GET https://feegate.org/api/supply/exchange-listing-intel/exchange_overview`
  - 香港人才入境计划官方统计（2024-2025） — `GET https://feegate.org/api/supply/hk-talent/scheme_list`
  - 稳定币最高收益池榜（跨链实算） — `GET https://feegate.org/api/supply/stablecoin-yield/yield_digest`
  - AI 大模型选型价值排名（value_score 智能排名） — `GET https://feegate.org/api/supply/ai-model-value/value_digest`
  - AI 模型定价 · 私有源站单源试点 — `GET https://feegate.org/api/supply/ai-2/preview`

## Free data zone (public data, no payment required)
- Entry: https://feegate.org/free/ (189,085 records across 8 datasets)
- Query API (JSON, no key): https://feegate.org/free/api/search?q=<term>&dataset=<id>&limit=20
- MCP endpoint (streamable HTTP, no key): https://feegate.org/free/mcp — tools: free_datasets, free_search, free_get
- Machine-readable index: https://feegate.org/free/index.json
- Manifest with per-dataset files: https://feegate.org/free/all.json
- Bulk bundles: https://feegate.org/free/bundle/<dataset>.jsonl.gz
- Per dataset: https://feegate.org/free/<id>.json — each record carries source_url, fetched_at and content_hash, so anyone can recompute it.
- Datasets:
  - Top 50 Stablecoin Yield Pools (TVL ≥ $1M)：50 条，来源 https://yields.llama.fi/pools，采集于 2026-11-11T16:17:03Z
  - AI Model Pricing Top 100 (cheapest blended cost first)：100 条，来源 https://raw.githubusercontent.com/Yotoha0303/Yotoha0303/v2.0.0-feegate-release/data/feegate-ai-model-pricing-index.json，采集于 2026-11-11T16:17:03Z
  - x402 Paid Resource Index (official discovery layer)：120,389 条，来源 https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources，采集于 2026-11-11T16:17:03Z
  - MCP Server Directory (official registry)：61,134 条，来源 https://registry.modelcontextprotocol.io/v0/servers，采集于 2026-11-11T16:17:03Z
  - DeFi Protocol TVL Rankings (DeFiLlama public data)：3,000 条，来源 https://api.llama.fi/protocols，采集于 2026-11-11T16:17:03Z
  - Spot Market Snapshot (Binance public API)：3,131 条，来源 https://api.binance.com/api/v3/ticker/24hr，采集于 2026-11-11T16:17:03Z
  - x402 Ecosystem Index (CC0)：781 条，来源 https://github.com/xpaysh/awesome-x402，采集于 2026-11-11T16:17:03Z
  - AI Readability Probe (robots / llms.txt / sitemap)：500 条，来源 https://feegate.org/free/ai-readability，采集于 2026-11-11T16:17:03Z