io.github.Kali123411/k402 is a remote MCP server that gives an AI agent 36 tools, among them attest_verify, catalog, channel_config. It answers at https://x402-compute.68cxgfyr0.workers.dev/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 20 October 2026, succeeded.
Agent-payable APIs on Kaspa: LLMs, chain data, covenants, zk proofs — pay per call, no API key
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
attest_verify | Verify a RISC Zero receipt against an image_id -> {valid, journal_b64}. Anyone can check an attestation without trusting the prover. Paid (~$0.0002). Inputs: receipt_b64, image_id |
catalog | List every service this gateway sells (text tools, Kaspa chain data, LLM tiers) with live prices in KAS and USD. Free. Start here to see what's available and what calls cost. |
channel_config | Parameters for opening a kaspa-channel — a covenant-enforced payment channel that settles per-call vouchers on Kaspa L1 with NO custodian (the trustless alternative to a prepaid session). Returns the payee pubkey, min/max channel size, requ |
channel_status | Status of a kaspa-channel by its channel id (covenant id): funded value, amount spent via vouchers, remaining, expiry, and whether it has been closed on-chain. Free. Inputs: channel_id |
classify | Classify text into one (or multiple, if multi=true) of 2-32 labels; the result is constrained to your label set. Paid (~$0.0003 in KAS). Inputs: text, labels, multi |
covenant_address | Derive the covenant P2SH address for a compiled script on 'mainnet' or 'testnet-10'. Paid (~$0.0003). Inputs: script_hex, network |
covenant_broadcast | Broadcast a signed covenant tx (RpcTransaction JSON from covenant_build). MAINNET moves real KAS — run covenant_check first. Paid (~$0.0003). Inputs: transaction, network |
covenant_build | Assemble a covenant spend tx. Each input: {txid, index, entry, compute_budget?, and either sigscript:{source,decl,args,is_leader?} to build a covenant sigscript server-side, or omit sigscript for a P2PK input you sign locally}. Each output: Inputs: inputs, outputs, network, lock_time, payload_hex |
covenant_check | Local txscript pre-verify of a signed covenant tx BEFORE broadcast — catches script failures that would otherwise cost you a broadcast. 'entries' are the spent UTXOs (covenant_utxos output plugs in directly). Returns {all_ok, inputs:[{index Inputs: transaction, entries |
covenant_compile | Compile a Silverscript covenant to script hex, ABI, hardened template hash, and its P2SH address on each network. constructor_args is the silverc ctor JSON (e.g. [{"kind":"int","data":7}]). Paid (~$0.002). NOTE: 'compiles' ≠ proven on-chain Inputs: source, constructor_args |
covenant_utxos | Live UTXO set locked under a covenant address (covenant state inspection), from the node. Optionally filter by covenant_id. Paid (~$0.0003). Inputs: address, network, covenant_id |
embed_text | Embed up to 64 texts (768-dim vectors, nomic-embed-text). Paid (~$0.0003 in KAS). Inputs: texts |
extract | Extract structured data from text as JSON guaranteed to match your JSON schema (schema-constrained decoding, not best-effort). Paid (~$0.0015 in KAS). Inputs: text, schema, instruction |
generate | Run a prompt on a GPU model tier: 'chat' (fast 7B, ~$0.0015), 'llama' (budget 8B, ~$0.0008), 'reason' (35B, ~$0.004), 'think' (deep chain-of-thought 35B MoE, ~$0.004), 'code' (coder model, ~$0.0025), or 'kaspa-expert' (RAG-grounded, current Inputs: prompt, tier, system, max_tokens |
job_result | Fetch a finished proving job's result {image_id, total_cycles, journal_b64, receipt_b64}. 404 until done; results kept 24h. Free. Inputs: job_id |
job_status | Poll a proving job: queued/running/done/failed, queue position, cost. Free. Inputs: job_id |
kaspa_balance | Balance of any Kaspa MAINNET address, straight from a node (no indexer, no API key). Paid (~$0.00015 in KAS). Inputs: address |
kaspa_fee_estimate | Current Kaspa mainnet feerate buckets (sompi per gram of tx mass). Paid (~$0.00015). |
kaspa_network | Kaspa mainnet status: DAA score, block count, difficulty, node sync state. Paid (~$0.00015 in KAS). |
kaspa_tx_status | Mempool status of a Kaspa transaction. Absent from mempool means accepted-or-unknown — confirm acceptance by checking one of its outputs with kaspa_utxos. Paid (~$0.00015). Inputs: txid |
kaspa_utxos | UTXO set of a Kaspa mainnet address, including scriptPublicKey and covenant_id where set. Paid (~$0.0003 in KAS). Inputs: address |
open_session | Open a prepaid payment session: returns a session key and a personal Kaspa MAINNET deposit address. Send KAS to the address from any wallet (min 0.25 KAS); confirmed deposits become spendable balance within seconds and every paid tool call |
pay_per_call | Complete a PER-CALL coin payment. After a paid tool returns a 402 with pay_per_call_offers, pay one offer on-chain from your own wallet, then call this with the 402's `endpoint` and `request_body`, the chosen offer's `scheme` and `payment_i Inputs: endpoint, request_body, scheme, payment_id, txid |
payment_options | Which coins and schemes this gateway accepts for payment. Free. Ways to pay any paid tool: a prepaid KAS session (open_session — simplest, no per-call step); per-call in any listed coin (pay the offer a 402 returns, then pay_per_call); or, |
prove_guest_upload | Upload a RISC Zero program binary (the .bin risc0-build emits, base64) once; returns its content-addressed image_id (also the verification key), reusable across proofs. Paid (~$0.01). Inputs: program_b64 |
prove_preflight | Execute a guest WITHOUT proving: exact cycle count + a signed price quote {total_cycles, price_kas, quote_id, quote_expires}. Run this first — proving cost scales with cycles by orders of magnitude. Paid (~$0.002). Inputs: image_id, input_b64 |
prove_submit | Queue a proving job -> {job_id, cost_kas}. Pass quote_id (from prove_preflight; charged the quote) or max_kas (skip preflight; priced on actual cycles, refuses if over the cap). Then poll job_status and fetch job_result. Paid: the proof's c Inputs: image_id, input_b64, quote_id, max_kas |
read_url | Fetch a public web page and return its title + clean markdown; distill=true adds key-fact bullets. Useful when you have no web access of your own. Paid (~$0.0012 in KAS). Inputs: url, distill |
registry_provider | Full detail on one provider in the service exchange by its payee pubkey: every service it lists, its chain-verified reputation (settled KAS volume + settlement count), and its payee address. Free. Inputs: payee_pubkey |
registry_search | Discover providers in the k402 service exchange — an open marketplace of agent-payable services, each settled trustlessly over a Kaspa payment channel directly with the provider (no custodian). Filter by capability (e.g. 'summarize', 'llm:r Inputs: capability, max_price_usd, min_reputation_kas, limit |
rewrite | Rewrite text per an instruction (tone, format, length...). Paid (~$0.001 in KAS). Inputs: text, instruction |
search_index | Store documents [{id, text, meta?}] in a named server-side collection for semantic search. Use an unguessable collection name and keep it secret. Paid (~$0.0015 in KAS). Inputs: collection, documents, replace |
search_query | Semantic-search a collection you indexed earlier; returns top-k matches with scores. Paid (~$0.0003 in KAS). Inputs: collection, q, top_k |
session_status | Check the current payment session: deposit address, deposited / spent / remaining KAS. Free. |
summarize | Summarize text or a public URL in at most max_words. Paid (~$0.001 in KAS). Inputs: text, url, max_words |
use_session | Attach an existing k402 session key (from a previous open_session) so paid calls meter against its balance — use after reconnecting to the hosted endpoint, or to carry one funded session across clients. Returns the session's current balance Inputs: session |
Every block below points at https://x402-compute.68cxgfyr0.workers.dev/mcp. Pick your client and copy.
claude mcp add --transport http io-github-kali123411-k402 https://x402-compute.68cxgfyr0.workers.dev/mcp
{
"mcpServers": {
"io-github-kali123411-k402": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://x402-compute.68cxgfyr0.workers.dev/mcp"]
}
}
}{
"mcpServers": {
"io-github-kali123411-k402": {
"url": "https://x402-compute.68cxgfyr0.workers.dev/mcp"
}
}
}{
"servers": {
"io-github-kali123411-k402": {
"type": "http",
"url": "https://x402-compute.68cxgfyr0.workers.dev/mcp"
}
}
}{
"context_servers": {
"io-github-kali123411-k402": {
"url": "https://x402-compute.68cxgfyr0.workers.dev/mcp"
}
}
}{
"mcpServers": {
"io-github-kali123411-k402": {
"serverUrl": "https://x402-compute.68cxgfyr0.workers.dev/mcp"
}
}
}{
"mcpServers": {
"io-github-kali123411-k402": {
"url": "https://x402-compute.68cxgfyr0.workers.dev/mcp"
}
}
}name: io.github.Kali123411/k402
version: 0.0.1
schema: v1
mcpServers:
- name: io.github.Kali123411/k402
type: streamable-http
url: https://x402-compute.68cxgfyr0.workers.dev/mcp{
"mcpServers": {
"io-github-kali123411-k402": {
"httpUrl": "https://x402-compute.68cxgfyr0.workers.dev/mcp"
}
}
}{
"mcpServers": {
"io-github-kali123411-k402": {
"type": "http",
"url": "https://x402-compute.68cxgfyr0.workers.dev/mcp"
}
}
}{
"mcpServers": {
"io-github-kali123411-k402": {
"url": "https://x402-compute.68cxgfyr0.workers.dev/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fx402-compute.68cxgfyr0.workers.dev%2Fmcp&type=streamable_http&id=io-github-kali123411-k402&name=io.github.Kali123411/k402
It answered our last check on 20 October 2026 in 637 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
36, as returned by the server's own tools/list on 12 September 2026: attest_verify, catalog, channel_config, channel_status, classify, covenant_address, covenant_broadcast, covenant_build, and 28 more.
It answered our last check on 20 October 2026 in 637 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://x402-compute.68cxgfyr0.workers.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.kali123411. Endpoint host: x402-compute.68cxgfyr0.workers.dev. ARD identifier: urn:air:io.github.kali123411:mcp:k402.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.