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K402

Agent-payable APIs on Kaspa: LLMs, chain data, covenants, zk proofs — pay per call, no API key

Connector by Kali123411 · GitHub account verified by the MCP Registry

IndexedMITLocal (stdio)Remote (HTTP)
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Install

Works with Claude Code, VS Code, Codex, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/kali123411-k402

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Remote endpoint

  • https://x402-compute.68cxgfyr0.workers.dev/mcp Remote (HTTP)

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About

Agent-payable APIs on Kaspa: LLMs, chain data, covenants, zk proofs — pay per call, no API key

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
15 read · 9 write · 0 delete · 12 not yet classified
Secrets
1 (API keys, tokens or passwords)
Install scripts
Not scanned yet
Runs as
Python package

Tools by what they do 36

Read from the source code; the running server may list different tools.

Read 15 · Look things up without changing anything.

  • attest_verify
  • catalog
  • channel_status
  • classify
  • covenant_check
  • extract
  • job_result
  • job_status
  • kaspa_fee_estimate
  • kaspa_tx_status
  • read_url
  • registry_search
Show 3 more tools
  • search_query
  • session_status
  • summarize

Write 9 · Create, change, send or run things.

  • covenant_broadcast
  • covenant_build
  • embed_text
  • generate
  • pay_per_call
  • prove_guest_upload
  • prove_preflight
  • prove_submit
  • use_session

Not yet classified 12 · We could not tell from the name and description.

  • channel_config
  • covenant_address
  • covenant_compile
  • covenant_utxos
  • kaspa_balance
  • kaspa_network
  • kaspa_utxos
  • open_session
  • payment_options
  • registry_provider
  • rewrite
  • search_index

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

  • K402_SESSION

Other settings (environment variables or headers).

  • K402_GATEWAY

Network hosts it talks to 1

  • x402-compute.68cxgfyr0.workers.dev · found in remote endpoint, install command

Files it touches

  • Any path the agent passes to its tools

Tools (36)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • 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).

  • 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, required expiry lead, and maxfee. Free. Opening a channel means funding the channel covenant on-chain (payer holds the key), then paying per call with signed vouchers — use the `k402` Python client (`pip install k402`, k402.channel) to build the covenant and sign vouchers, since that flow needs your Kaspa key. Returns {error} if this gateway hasn't enabled the (…

  • 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.

  • 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).

  • covenant_address

    Derive the covenant P2SH address for a compiled script on 'mainnet' or 'testnet-10'. Paid (~$0.0003).

  • covenant_broadcast

    Broadcast a signed covenant tx (RpcTransaction JSON from covenant_build). MAINNET moves real KAS — run covenant_check first. Paid (~$0.0003).

  • 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: {amount, address|script_public_key_hex, covenant?:{authorizing_input,covenant_id}}. Returns the tx, a broadcast-ready rpc_transaction, fee accounting, and (if fully authorized) a pre-verify. We never sign. Paid (~$0.001).

  • 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, ok, error?}]}. Paid (~$0.0005).

  • 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.

  • covenant_utxos

    Live UTXO set locked under a covenant address (covenant state inspection), from the node. Optionally filter by covenant_id. Paid (~$0.0003).

  • embed_text

    Embed up to 64 texts (768-dim vectors, nomic-embed-text). Paid (~$0.0003 in KAS).

  • 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).

  • 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 Kaspa knowledge, ~$0.0015). Returns the completion text.

  • job_result

    Fetch a finished proving job's result {image_id, total_cycles, journal_b64, receipt_b64}. 404 until done; results kept 24h. Free.

Show 21 more tools
  • job_status

    Poll a proving job: queued/running/done/failed, queue position, cost. Free.

  • kaspa_balance

    Balance of any Kaspa MAINNET address, straight from a node (no indexer, no API key). Paid (~$0.00015 in KAS).

  • 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).

  • kaspa_utxos

    UTXO set of a Kaspa mainnet address, including scriptPublicKey and covenant_id where set. Paid (~$0.0003 in KAS).

  • 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 meters against it. Free. The session is saved locally so subsequent calls use it automatically.

  • 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_id`, and your payment `txid`. The gateway verifies the payment landed and returns the tool's real result. (Alternative to a prepaid session — use this when you'd rather pay each call directly in a specific coin.)

  • 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, where the experimental 'kaspa-channel' scheme is offered, a covenant payment channel that settles per-call vouchers on L1 with no custodian (see channel_config). Coins may include Kaspa, Pearl, BTC, LTC, DOGE, BCH, DASH, and EVM assets (ETC, ETH, USDC, USDT).

  • 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).

  • 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).

  • 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 cycle-based price (dynamic).

  • 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).

  • 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.

  • 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:reason', 'zk-prove'), max USD price, and minimum reputation (settled KAS volume, chain-verified). Results are ranked reputation-first. Free. Returns each provider's endpoint, payee pubkey, price, channel terms, and reputation.

  • rewrite

    Rewrite text per an instruction (tone, format, length...). Paid (~$0.001 in KAS).

  • 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).

  • search_query

    Semantic-search a collection you indexed earlier; returns top-k matches with scores. Paid (~$0.0003 in KAS).

  • 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).

  • 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. Free.

Signals

Weekly downloads
36
Last release
Jul 18, 2026 (3 months ago)
Last package publish
Jul 18, 2026 (3 months ago)

From the package registry.

Details

Registry name
io.github.Kali123411/k402
Version
0.7.0
Auth
Auth not stated
Packages
pypi k402-mcp
License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
Official MCP Registry

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Cite this page

K402 MCP server. Agent Mart. https://agentmart.dev/connectors/kali123411-k402 (last updated 2026-10-24)