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AgentIndex x402

https://x402.agentindex.world/search
● healthy model-context-protocol-mcp

Jev-powered decisions, web search, PDF/web to Markdown, summarize. From $0.001, no API key.

Category
model-context-protocol-mcp
Chains
base
Price
$0.0010–$0.1000 USDC

Quality grade

How grading works
B 76.7 / 100
Availability 40.0 / 40
Endpoint responded (HTTP 200)
Payability 20.0 / 20
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 16.7 / 40
11 distinct payers, 138 USDC transfers in the last 30 days
Owner verified 0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 8 h ago. On-chain activity last read 11 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

118 resource(s) advertised by this origin.

POST https://x402.agentindex.world/search

Jev-routed web search: each query goes to the best specialised source (code, facts, news, prices), results ranked by relevance. 28/30 test queries answered. Up to 10 results per query, each with title, URL, snippet, short extract and publish date. Up to 5 queries per call, merged and de-duplicated.

POST https://x402.agentindex.world/translate

Translate up to 200 text segments in a single call - the same result that would otherwise take 200 separate calls to translate a whole file. Markdown, HTML and {x} placeholders preserved per segment, order and count kept intact, source language auto-detected, automatic fallback across multiple model

POST https://x402.agentindex.world/jobs

Multi-query web research, read and synthesized into one sourced JSON brief in a single call - what would otherwise cost an agent twenty calls and its whole context window. Free status polling and result retrieval. Try GET /jobs/sample.

POST https://x402.agentindex.world/pdf

Extract a public PDF (by HTTPS URL or base64) into clean Markdown - headings and tables preserved via layout-aware parsing, plus title/author/page count/date metadata and a real token count. Text content itself is never generated or altered, only its structure is inferred. Try GET /pdf/sample. Part

POST https://x402.agentindex.world/web-read

Fetch URL content as Markdown: read any web page and get clean Markdown - navigation, ads and boilerplate stripped, links resolved, plus a real token count. The same extraction /search uses on result pages, exposed standalone for a URL you already have. Try GET /web-read/sample. Part of the AgentInd

POST https://x402.agentindex.world/extract

Extract structured data from a URL or raw text into strict JSON matching a schema you provide. Fields the content doesn't support come back null - never an invented or approximate value, and an unmatchable schema returns an explicit error. Try GET /extract/sample. Part of the AgentIndex content kit

POST https://x402.agentindex.world/summarize

Summarize a URL, raw text or HTML at the length you request - short, medium or long - with the source noted. Neutral and factual, no invented facts. Try GET /summarize/sample. Part of the AgentIndex content kit (pdf, web-read, extract, summarize, detect-language) - see GET /capabilities.

POST https://x402.agentindex.world/fact-check

Fact-check verdict written by Claude Haiku 5.5 (Anthropic) from real web sources: supported/contradicted/mixed/unverifiable, each source with its stance (supports/contradicts/neutral). Answer in a few seconds. Try GET /fact-check/sample. Independently monitored: lumierepaycheck.org/e?url=https://x40

POST https://x402.agentindex.world/discover

Find MCP servers matching a need, ranked by semantic similarity over a curated snapshot of MCP servers. Returns name, endpoint, description, source registry and a 0-1 relevance per match. Paid POST: up to 25 matches. Try GET /discover/sample.

POST https://x402.agentindex.world/weather

Current weather and a 3-day forecast for any city or lat/lon - temperature, humidity, wind, conditions. No account, no API key. Try GET /weather/sample.

POST https://x402.agentindex.world/crypto

Live spot prices for crypto coins (BTC, ETH, SOL, ...) in USD or another fiat, with 24h change. Accepts tickers or CoinGecko ids. Try GET /crypto/sample.

POST https://x402.agentindex.world/news

Top Hacker News headlines right now - title, URL, score, comments. Fresh links for agents that need current tech/startup signal. Try GET /news/sample.

POST https://x402.agentindex.world/can-pay

Check whether a Base wallet holds enough USDC to pay an x402 amount (default $0.001). Returns balance, can_pay, shortfall. The checklist agents run before spending. Try GET /can-pay/sample.

POST https://x402.agentindex.world/probe

Probe any public URL and report if it is an x402 paywall - price, network, payTo, scheme. Shop paywalls before you spend. Try GET /probe/sample.

POST https://x402.agentindex.world/wallet-balance

Read native coin and USDC balances for any EVM wallet on Base, Ethereum, Polygon, Arbitrum or Optimism, with atomic amounts and current block. No RPC key or account. Try GET /wallet-balance/sample.

POST https://x402.agentindex.world/gas-price

Read the live gas price, EIP-1559 base fee and estimated native-transfer cost on Base, Ethereum, Polygon, Arbitrum or Optimism. No RPC key or account. Try GET /gas-price/sample.

POST https://x402.agentindex.world/wallet-intelligence

One call replaces wallet-balance and gas reads across Base, Ethereum, Polygon, Arbitrum and Optimism. Returns native and USDC balances, current blocks, fees and Base x402 payment readiness. One signature instead of ten paid requests. Try GET /wallet-intelligence/sample.

POST https://x402.agentindex.world/x402-echo

Cheapest possible Base-mainnet x402 conformance call: settle $0.001 of USDC and receive payer identity, request echo and receipt. Built for agents testing wallets, Payment-Signature, facilitators and settlement. Try GET /x402-echo/sample.

POST https://x402.agentindex.world/tip

Voluntarily support AgentIndex with one cent of Base USDC. Returns payer identity, a thank-you acknowledgement and an x402 settlement receipt. Use this when an agent wants to sponsor open pay-per-call infrastructure.

POST https://x402.agentindex.world/agent-claim

Buy a 30-day verified agent listing for $0.01 USDC. AgentIndex audits reachability, x402 compatibility and discovery manifests, then publishes a machine-readable registry entry and score badge for buyer trust and SEO.

POST https://x402.agentindex.world/agent-health

Fresh operational audit of any public agent or paid API: reachability, latency, HTTP status, x402 challenge, price/network/payTo, OpenAPI, agent card and MCP manifest. Returns a 0-100 score, verdict and issues. Try GET /agent-health/sample.

POST https://x402.agentindex.world/decide

Ask up to 20 typed yes/no, multiple-choice or ordinal-scale questions about one shared piece of context in a single call - each answered with a real probability (Jev decision primitives), not generated text. Powered by Jev (TypeSafe System One). $0.001 per call, no OpenRouter or TypeSafe account nee

POST https://x402.agentindex.world/guard

Ask whether a tool call should run automatically, need human confirmation, or be denied, given the user's request - returns allow/ask/deny with a probability. Advisory only: like any LLM-based judge it is sensitive to prompt injection in the request or tool call, so the calling agent must keep the f

POST https://x402.agentindex.world/verify

Check whether a source supports, contradicts, or gives insufficient information about a claim - a typed verdict with a real probability, not generated text. Powered by Jev (TypeSafe System One). $0.001 per call, no OpenRouter or TypeSafe account needed. Try GET /verify/sample.

POST https://x402.agentindex.world/rank

Rank up to 50 documents by relevance to a query in a single call - each document returned with its relevance probability, sorted highest first. Powered by Jev (TypeSafe System One). $0.001 per call, no OpenRouter or TypeSafe account needed. Try GET /rank/sample.

POST https://x402.agentindex.world/token-risk

Base token risk scan: on-chain rug check and honeypot-style flag detection for any ERC-20, no GoPlus, DexScreener or other vendor - real Base token safety. Reads bytecode for mint/blacklist/pause/tax powers, EIP-1967 proxy, renounced ownership, plus Uniswap v2/v3 and Aerodrome liquidity. A Jev avoid

GET https://x402.agentindex.world/token-card

Base token safety check: Claude Haiku 5.5 (Anthropic) writes a rug pull / honeypot verdict (SAFE/CAUTION/RISKY/DANGER) from on-chain data, a tagline, a short explanation. Deterministic fallback if Claude is slow, honestly labeled. GET /token-card/sample. Independently monitored: lumierepaycheck.org/

POST https://x402.agentindex.world/research

Jev-powered research: routed search, cited answer, claims verified against sources. Ask a question, get a 5-8 sentence answer, each claim tagged to a numbered source, built from real page content - no invented facts. A fast paid LLM writes it, under 4.5s guaranteed; on a rare miss, a no-LLM extracti

POST https://x402.agentindex.world/v1/chat/completions

437 models, no account, no API key, pay per call in USDC - OpenAI-compatible chat completions and AI inference gateway (Claude, GPT, Gemini, Llama, Mistral and more in one endpoint). Price: from $0.001, computed from your max_tokens × model rate × 1.10 (you sign a ceiling; unused tokens are not refu

POST https://x402.agentindex.world/sentiment

Sentiment analysis: classify text as positive, negative, or neutral with a confidence score and an alternate label. Powered by Jev, with an automatic Groq-hosted LLM fallback if Jev is slow or unavailable ("engine":"jev"|"fallback" in the response) - under 4.5s guaranteed. Try GET /sentiment/sample.

POST https://x402.agentindex.world/classify

Text classification with your own custom labels (2-20) - categorize a support ticket, a review, or any text into the best-fitting label, with a confidence score and an alternate label. Powered by Jev, falling back to a Groq-hosted LLM if Jev is slow or unavailable - under 4.5s guaranteed. Try GET /c

POST https://x402.agentindex.world/intent

Intent detection: classify text as a question, request, complaint, compliment, or other, with a confidence score and an alternate label. Powered by Jev, with an automatic Groq-hosted LLM fallback if Jev is slow or unavailable - under 4.5s guaranteed. Try GET /intent/sample.

POST https://x402.agentindex.world/spam-check

Spam detection: classify text as spam or not spam with a confidence score. Powered by Jev, with an automatic Groq-hosted LLM fallback if Jev is slow or unavailable - under 4.5s guaranteed. Try GET /spam-check/sample.

POST https://x402.agentindex.world/toxicity

Toxicity detection: classify text as toxic or not toxic (hate speech, harassment, threats, severe offensive language) with a confidence score. Powered by Jev, with an automatic Groq-hosted LLM fallback if Jev is slow or unavailable - under 4.5s guaranteed. Try GET /toxicity/sample.

POST https://x402.agentindex.world/language

Language detection: identify which of 20 common languages (or "other") a text is written in, with a confidence score. Powered by Jev, with an automatic Groq-hosted LLM fallback if Jev is slow or unavailable - under 4.5s guaranteed. Try GET /language/sample.

POST https://x402.agentindex.world/pii-check

PII detection: flag whether text contains personally identifiable information (name plus contact details, email, phone, address, government ID, financial account) with a confidence score. Powered by Jev, with an automatic Groq-hosted LLM fallback if Jev is slow or unavailable - under 4.5s guaranteed

POST https://x402.agentindex.world/llm/claude-sonnet

Claude Sonnet API - pay per call, no API key. OpenAI-format chat completions on anthropic/claude-sonnet-5.5, pinned to Anthropic's own OpenRouter endpoint for reliability. You sign a fixed price computed from your max_tokens; unused tokens are not refunded. 20s server-side timeout - never charged if

POST https://x402.agentindex.world/llm/gpt-mini

GPT Mini API - pay per call, no API key. OpenAI-format chat completions on openai/gpt-5.4-mini, pinned to OpenAI's own OpenRouter endpoint for reliability. You sign a fixed price computed from your max_tokens; unused tokens are not refunded. 20s server-side timeout with an automatic 2nd-provider ret

POST https://x402.agentindex.world/llm/llama

Llama API - pay per call, no API key. OpenAI-format chat completions on meta-llama/llama-4-maverick, pinned to DeepInfra for reliability. You sign a fixed price computed from your max_tokens; unused tokens are not refunded. 20s server-side timeout - never charged if it fires; set your client timeout

POST https://x402.agentindex.world/geo/distance

Great-circle distance between two lat/lon points (haversine formula). Returns km, mi or nm.

POST https://x402.agentindex.world/geo/bearing

Initial compass bearing (0-360 degrees, clockwise from true north) from point 1 to point 2.

POST https://x402.agentindex.world/geo/midpoint

Geographic (great-circle) midpoint between two lat/lon points.

POST https://x402.agentindex.world/geo/geohash

Encode a lat/lon point into a geohash string (precision 1-12 characters).

POST https://x402.agentindex.world/geo/point-in-polygon

Ray-casting point-in-polygon test (planar approximation - fine for city/region-scale polygons).

POST https://x402.agentindex.world/geo/bbox

Bounding box (min/max lat and lon) enclosing a list of points.

POST https://x402.agentindex.world/geo/dms

Convert decimal degrees to degrees/minutes/seconds, or DMS back to decimal degrees.

POST https://x402.agentindex.world/time/convert

Convert an ISO 8601 datetime from one IANA timezone to another (handles DST automatically).

POST https://x402.agentindex.world/time/add

Add a fixed duration (days/hours/minutes/seconds) to an ISO 8601 datetime.

POST https://x402.agentindex.world/time/between

Duration between two ISO 8601 datetimes, as total seconds and a days/hours/minutes/seconds breakdown.

POST https://x402.agentindex.world/time/business-days

Count weekdays (Mon-Fri) between two dates, inclusive of both endpoints.

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -X POST https://x402.agentindex.world/search
MCP endpoint
https://x402.agentindex.world/mcp
/.well-known/x402.json
https://x402.agentindex.world/.well-known/x402

Listed in

Directories this entry was found in.

mcp a2a