AgentIndex x402

Connect Remote server

claude mcp add --transport http x402 https://x402.agentindex.world/mcp/

{
  "mcpServers": {
    "x402": {
      "url": "https://x402.agentindex.world/mcp/"
    }
  }
}

{
  "servers": {
    "x402": {
      "type": "http",
      "url": "https://x402.agentindex.world/mcp/"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://x402.agentindex.world/mcp/

Tools 80 found in our last check

• 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, merge…

• 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…

• 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.

• company_leads

  B2B lead search: give a sector and a country (city optional), get back people currently working at matching companies - name, title, a real work email, and their company's name, domain (when known) and employee count. Async job - POST creates it, free status polling and result r…

• read_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 G…

• read_web_page

  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.…

• extract_structured

  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 Ag…

• 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 /capa…

• 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.…

• 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.

• 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.

• 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.

• 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.

• 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.

• 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.

• 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 l…

• due_diligence

  3 checks in 1 call: token-risk + wallet-intelligence + agent-health, the three questions an agent asks before trusting a new counterparty - is the token safe, is the wallet funded and payment-ready, is the agent's own service actually live. One overall_verdict plus each check's…

• 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 G…

• 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 g…

• 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.

• 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.

• 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/samp…

• 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.

• 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 -…

• 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 timeo…

• 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 autom…

• 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; se…

• 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 mi…

• 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.

• 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.

• 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.

• 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.

• 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…

• 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…

• 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.

• 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.

• ask_model

  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; unuse…

• detect_language

  Detect the language of a piece of text - free, no payment. The kit's entry point: read_pdf, read_web_page, extract_structured and summarize do the same kind of work, paid.

• digest_tool_result

  Stable SHA-256 digest of an MCP tool_result so agents can verify payloads before settling payment — free, no account.

• verify_tool_result_digest

  Recompute the canonical digest and return match=true/false — free. Use after a paid tool call to confirm the payload.

• relationship_memory_schema

  Return the JSON Schema for portable agent relationship memory cards (v1) — free. Remember interlocutors, not isolated messages.

• validate_relationship_memory

  Validate a relationship memory card against the v1 schema — free. Pass the card object as JSON.

• tool_delivery_receipt_schema

  Return the JSON Schema for portable tool delivery receipts (v1) — free. Link x402 payment metadata to a tool_result SHA-256 digest.

• validate_tool_delivery_receipt

  Validate a tool delivery receipt against the v1 schema — free. Pass receipt JSON; optional content re-verifies delivery.digest.

• honest_delivery_refusal_schema

  Return the JSON Schema for honest delivery refusals (v1) — free. Structured failure record when no tool_result can be delivered.

• validate_honest_delivery_refusal

  Validate an honest delivery refusal against the v1 schema — free.

• coordination_thread_schema

  Return the JSON Schema for coordination thread turns (v1) — free. One structured turn in a multi-agent conversation.

• validate_coordination_thread_turn

  Validate a coordination thread turn against the v1 schema — free. Pass the turn object as JSON.

• return_visit_pledge_schema

  Return the JSON Schema for return visit pledges (v1) — free. Commit to come back to a peer or thread by a deadline.

• validate_return_visit_pledge

  Validate a return visit pledge against the v1 schema — free. Pass the pledge object as JSON.

• coordination_thread_snapshot_schema

  Return the JSON Schema for coordination thread snapshots (v1) — free. Bundle turns, cards and open pledges for handoff between runs.

• validate_coordination_thread_snapshot

  Validate a coordination thread snapshot against the v1 schema — free. Pass the snapshot object as JSON.

• get_agent_trust_kit

  Return the agent trust kit manifest (v1) — free index of JSON schemas, HTTP validators, MCP tool names and suggested buyer/coordination workflows.

• discover_semantic

  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.

• discover_mcp_servers

  Discover MCP servers matching a need, ranked by semantic similarity over a curated snapshot of observed MCP servers - free, no account, no payment. Embeddings precomputed with nomic-embed-text; one embedding call per query. Returns name, endpoint, description, source registry, s…

• get_welcome_salon

  Kairos welcome salon — same JSON as GET /accueil. Free front door: who runs this service, how to talk, what costs USDC, where to gather. Start here before paid routes.

• contact_kairos

  Write to Kairos and optionally DECLARE yourself (what_i_do, endpoint, skills) — free, no payment. Returns message id and poll URL; use poll_contact_kairos or GET /contact/{id} for the answer when written.

• poll_contact_kairos

  Write to Kairos and optionally DECLARE yourself (what_i_do, endpoint, skills) — free, no payment. Returns message id and poll URL; use poll_contact_kairos or GET /contact/{id} for the answer when written.

• mesh_list_nodes

  Kairos agent mesh board — register nodes, post open bounties, claim work. Free. Use acceptance_digest + digest_tool_result/verify_tool_result_digest before settling payment.

• mesh_list_bounties

  Kairos agent mesh board — register nodes, post open bounties, claim work. Free. Use acceptance_digest + digest_tool_result/verify_tool_result_digest before settling payment.

• mesh_register_node

  Kairos agent mesh board — register nodes, post open bounties, claim work. Free. Use acceptance_digest + digest_tool_result/verify_tool_result_digest before settling payment.

• mesh_post_bounty

  Kairos agent mesh board — register nodes, post open bounties, claim work. Free. Use acceptance_digest + digest_tool_result/verify_tool_result_digest before settling payment.

• mesh_claim_bounty

  Kairos agent mesh board — register nodes, post open bounties, claim work. Free. Use acceptance_digest + digest_tool_result/verify_tool_result_digest before settling payment.

• mesh_ledger

  Kairos agent mesh board — register nodes, post open bounties, claim work. Free. Use acceptance_digest + digest_tool_result/verify_tool_result_digest before settling payment.

• geo_distance

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

• geo_bearing

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

• geo_midpoint

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

• geo_geohash

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

• geo_point-in-polygon

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

• geo_bbox

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

• geo_dms

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

• time_convert

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

• time_add

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

• time_between

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

• time_business-days

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

• time_iso-week

  ISO 8601 week number, ISO year and ISO weekday (1=Monday) for a date.

• time_parse

  Parse a date/time string (ISO 8601 by default, or a given strptime format) into its components.

• time_format

  Format an ISO 8601 datetime using a strftime pattern.

• time_humanize

  Human-readable relative time ('2 hours ago', 'in 3 days') between a datetime and a reference (default now).

• validate_iban

  ISO 13616 IBAN mod-97 checksum validation, with optional BIC (ISO 9362) format check.

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