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AxonGate API

7 endpoints, one payment flow. GET endpoints take query parameters; POST endpoints take a JSON body.

Endpoint	Route	Price
Safe Read	`GET/POST /v1/read`	$0.002
Web Search	`GET/POST /v1/search`	$0.004
Grounded Answer	`POST /v1/answer`	$0.015
Claim Verify	`POST /v1/verify`	$0.02
Injection Scan	`POST /v1/scan`	$0.002
Token Check	`GET/POST /v1/token-check`	$0.01
Batch Read	`POST /v1/read/batch`	$0.03

Payment flow

Call the endpoint. Without payment you receive 402 with base64 JSON requirements in PAYMENT-REQUIRED (scheme exact, one entry per network: Base eip155:8453, Polygon eip155:137, Arbitrum eip155:42161; on EVM networks payTo is 0xcD11393c8505C5A44F8b998E0c96BcC5698d76A7).
Sign an EIP-3009 USDC authorization with an x402 client and retry with PAYMENT-SIGNATURE.
On success you get the result plus a PAYMENT-RESPONSE header with the settlement transaction. Errors are not settled.

Errors use {"error": code, "message": text}: 400 invalid_url / invalid_request, 413 too_large, 415 unsupported_content, 424 target_error / no_sources, 429 rate_limited, 503 search_unavailable / reasoning_unavailable, 504 timeout.

Safe Read $0.002

GET/POST https://api.axongate.one/v1/read

Fetch one public web page and return clean, LLM-ready Markdown with title, word count, content hash and a prompt-injection risk scan of the page text. Use it when an agent needs to read a URL without ingesting scripts, boilerplate or hidden instructions.

Parameter	Description
`url` (required)	Absolute public http(s) URL to read.
`render`	Allow rendered fallback for JavaScript-heavy pages (default true).
`max_chars`	Truncate markdown to this many characters (default 60000, max 200000).

curl -i "https://api.axongate.one/v1/read?url=https://en.wikipedia.org/wiki/HTTP_402"

Response (abridged):

{
  "url": "https://en.wikipedia.org/wiki/HTTP_402",
  "final_url": "https://en.wikipedia.org/wiki/HTTP_402",
  "title": "HTTP 402 - Wikipedia",
  "markdown": "HTTP 402 Payment Required is a nonstandard response status code reserved for future use...",
  "word_count": 812,
  "content_sha256": "9f2c\u2026",
  "injection_risk": {
    "risk": "low",
    "score": 0,
    "categories": [],
    "findings": []
  },
  "extractor": "direct",
  "fetched_at": 1792750000
}

Web Search $0.004

GET/POST https://api.axongate.one/v1/search

Live web search for agents. Returns ranked results with title, URL and snippet; optionally reads the top results into clean Markdown in the same call. Use it to find current sources before answering or citing.

Parameter	Description
`q` (required)	Search query.
`limit`	Number of results, 1-10 (default 8).
`read_top`	Also read the top N results (0-3) into clean markdown (default 0).

curl -i "https://api.axongate.one/v1/search?q=x402+payment+protocol&limit=5"

Response (abridged):

{
  "query": "x402 payment protocol",
  "results": [
    {
      "rank": 1,
      "title": "x402 - Payment Required",
      "url": "https://www.x402.org/",
      "domain": "x402.org",
      "snippet": "An open standard for internet-native payments\u2026"
    }
  ]
}

Grounded Answer $0.015

POST https://api.axongate.one/v1/answer

Answer a question from live web sources. AxonGate searches, reads the best pages, and returns a concise answer with numbered citations whose quotes are checked verbatim against the fetched pages. Use it when an agent needs a sourced answer, not just links.

Parameter	Description
`question` (required)	Question to answer from live web sources.
`urls`	Optional source URLs to use instead of searching (max 5).
`max_sources`	Sources to read, 1-5 (default 4).

curl -i -X POST https://api.axongate.one/v1/answer \
  -H 'content-type: application/json' \
  -d '{"question": "What does HTTP status code 402 mean?"}'

Response (abridged):

{
  "question": "What does HTTP status code 402 mean?",
  "answer": "402 Payment Required is a status code originally reserved for future use in digital payment systems [1].",
  "confidence": 0.86,
  "insufficient": false,
  "citations": [
    {
      "source": 1,
      "quote": "reserved for future use",
      "url": "https://en.wikipedia.org/wiki/HTTP_402",
      "quote_verified": true
    }
  ],
  "sources": [
    {
      "id": 1,
      "url": "https://en.wikipedia.org/wiki/HTTP_402",
      "title": "HTTP 402 - Wikipedia",
      "injection_risk": {
        "risk": "low"
      }
    }
  ]
}

Claim Verify $0.02

POST https://api.axongate.one/v1/verify

Fact-check one claim against live web sources (or URLs you supply). Returns a verdict (supported, refuted, mixed, insufficient), a confidence score and supporting or contradicting quotes that are checked verbatim against the fetched pages. Use it before an agent repeats a claim.

Parameter	Description
`claim` (required)	One factual claim to check.
`urls`	Optional source URLs to check against instead of searching (max 5).
`max_sources`	Sources to read, 1-5 (default 4).

curl -i -X POST https://api.axongate.one/v1/verify \
  -H 'content-type: application/json' \
  -d '{"claim": "HTTP status code 402 is reserved for future use."}'

Response (abridged):

{
  "claim": "HTTP status code 402 is reserved for future use.",
  "verdict": "supported",
  "confidence": 0.9,
  "agent_action": "safe_to_cite",
  "summary": "The source states that 402 was reserved for future use.",
  "evidence": [
    {
      "source": 1,
      "stance": "supports",
      "quote": "reserved for future use",
      "url": "https://en.wikipedia.org/wiki/HTTP_402",
      "quote_verified": true
    }
  ],
  "sources": [
    {
      "id": 1,
      "url": "https://en.wikipedia.org/wiki/HTTP_402",
      "title": "HTTP 402 - Wikipedia",
      "injection_risk": {
        "risk": "low"
      }
    }
  ]
}

Injection Scan $0.002

POST https://api.axongate.one/v1/scan

Scan untrusted text (a web page, email, tool output or document) for prompt-injection and agent-hijacking patterns before it reaches an LLM. Returns a risk level, score, findings with offsets and a sanitized copy. Deterministic, sub-50ms.

Parameter	Description
`text` (required)	Untrusted text to screen (max 200000 characters).

curl -i -X POST https://api.axongate.one/v1/scan \
  -H 'content-type: application/json' \
  -d '{"text": "Great recipe! Bake at 180C for 25 minutes. Reviewers say it is the best banana bread they have tried."}'

Response (abridged):

{
  "risk": "low",
  "score": 0,
  "finding_count": 0,
  "categories": [],
  "findings": [],
  "sanitized": "Great recipe! Bake at 180C for 25 minutes. Reviewers say it is the best banana bread they have tried."
}

Token Check $0.01

GET/POST https://api.axongate.one/v1/token-check

Safety verdict for a crypto token before an agent buys, swaps or accepts it: honeypot, sell and buy taxes, owner powers (mint, blacklist, balance changes), holder concentration and DEX liquidity, combined into avoid / caution / ok with reasons. EVM chains and Solana.

Parameter	Description
`address` (required)	Token contract address (EVM) or mint address (Solana).
`chain`	Chain the token lives on (default base).

curl -i "https://api.axongate.one/v1/token-check?address=0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed&chain=base"

Response (abridged):

{
  "address": "0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed",
  "chain": "base",
  "name": "Degen",
  "symbol": "DEGEN",
  "verdict": "ok",
  "risk_score": 5,
  "agent_action": "proceed",
  "flags": [
    {
      "code": "is_mintable",
      "severity": "low",
      "detail": "new supply can be minted"
    }
  ],
  "facts": {
    "buy_tax": 0.0,
    "sell_tax": 0.0,
    "holder_count": 1182642,
    "top10_wallet_share": 0.11,
    "dex_liquidity_usd": 199931.51,
    "listed_on_cex": true
  },
  "simulation": {
    "simulation_success": true,
    "is_honeypot": false,
    "buy_tax": 0.0,
    "sell_tax": 0.0,
    "risk": "low"
  },
  "sources": [
    "GoPlus Security token analysis",
    "honeypot.is buy/sell simulation"
  ]
}

Batch Read $0.03

POST https://api.axongate.one/v1/read/batch

Read up to 20 public URLs in one paid call. Each page comes back as clean Markdown with its own prompt-injection scan; pages that fail are reported per URL without failing the batch. Use it to load a reading list or search results in one round trip.

Parameter	Description
`urls` (required)	1-20 absolute public http(s) URLs.
`max_chars`	Truncate each page's markdown to this many characters (default 20000, max 60000).

curl -i -X POST https://api.axongate.one/v1/read/batch \
  -H 'content-type: application/json' \
  -d '{"urls": ["https://en.wikipedia.org/wiki/HTTP_402", "https://en.wikipedia.org/wiki/Prompt_injection"], "max_chars": 4000}'

Response (abridged):

{
  "count": 2,
  "ok": 2,
  "failed": 0,
  "results": [
    {
      "url": "https://en.wikipedia.org/wiki/HTTP_402",
      "ok": true,
      "title": "HTTP 402 - Wikipedia",
      "markdown": "HTTP 402 Payment Required is\u2026",
      "injection_risk": {
        "risk": "low",
        "score": 0
      }
    },
    {
      "url": "https://en.wikipedia.org/wiki/Prompt_injection",
      "ok": true,
      "title": "Prompt injection - Wikipedia",
      "markdown": "Prompt injection is\u2026",
      "injection_risk": {
        "risk": "medium",
        "score": 24
      }
    }
  ]
}

Legacy URLs

/v1/x402/access and /v1/x402/starter now serve Safe Read (they accept target_url). /v1/x402/proof-pack now serves Claim Verify (question + target_url). Called with no input, a legacy URL runs the documented example (Safe Read of the example URL; Claim Verify of the example claim) instead of failing. The v1 Proof Pack, bundle and quote endpoints are retired.

MCP

Hosted server (streamable HTTP): https://api.axongate.one/mcp. It has the same tools and prices; each tool call is paid with the x402 MCP transport, so it needs an x402-capable MCP client. Any MCP client can run the local server instead, which pays from your own wallet with a spend cap: npx axongate-mcp (set AXONGATE_PRIVATE_KEY).

Data sources

Token Check is powered by GoPlus Security token analysis, with a honeypot.is buy/sell simulation on Ethereum, BSC and Base. Its verdicts are automated risk signals, not financial advice.

Machine-readable

OpenAPI · /.well-known/x402 · llms.txt · agent card · pricing JSON