# io.github.Kali123411/k402 (remote · x402-compute.68cxgfyr0.workers.dev)

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

- Trust score: 58/100 (low)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `x402-compute.68cxgfyr0.workers.dev`: 58/100 (this document), [markdown](https://verifymcp.io/servers/kali123411-k402/x402-compute.md), [page](https://verifymcp.io/servers/kali123411-k402/x402-compute)
- pypi · `k402-mcp`: 19/100, [markdown](https://verifymcp.io/servers/kali123411-k402/k402-mcp.md), [page](https://verifymcp.io/servers/kali123411-k402/k402-mcp)

## Channel facts

- Endpoint: `https://x402-compute.68cxgfyr0.workers.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.7.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 36 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS not yet verified: we couldn't determine whether a plaintext access path exists.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 2775 tokens (~77/item across 36 items; 36 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http kali123411-k402 https://x402-compute.68cxgfyr0.workers.dev/mcp
```

### Codex

```toml
[mcp_servers.kali123411-k402]
url = "https://x402-compute.68cxgfyr0.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "kali123411-k402": {
      "type": "remote",
      "url": "https://x402-compute.68cxgfyr0.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add kali123411-k402 --url https://x402-compute.68cxgfyr0.workers.dev/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  kali123411-k402:
    url: "https://x402-compute.68cxgfyr0.workers.dev/mcp"
```

### Other

```json
{
  "mcpServers": {
    "kali123411-k402": {
      "type": "http",
      "url": "https://x402-compute.68cxgfyr0.workers.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 58, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-01 (score 57, 0)

- [functional improvement] Endpoint reachability: not serving MCP → reachable

### 2026-07-31 (score 57, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 57, +45)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 12, −44)

- [security regression] Endpoint reachability: reachable → not serving MCP
- [security regression] Stability: 0.07 → unverified
- [security regression] Transport: pass → fail
- [security] Authorization: Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the tool list to see what that exposes.
- [functional regression] Tool coverage: 100 → unverified
- [functional regression] Capabilities: pass → unverified
- [functional] First check of Schema quality: unverified

### 2026-07-28 (score 56, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 55, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 54)

First indexed and scored.

## MCP tools (36)

### `catalog` (~50 tokens)

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.

### `open_session` (~83 tokens)

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.

### `use_session` (~68 tokens)

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.

Input parameters:

- `session` (string, required)

### `session_status` (~28 tokens)

Check the current payment session: deposit address, deposited / spent / remaining KAS.
    Free.

### `registry_search` (~154 tokens)

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.

Input parameters:

- `capability` (string)
- `limit` (integer)
- `max_price_usd` (number)
- `min_reputation_kas` (number)

### `registry_provider` (~66 tokens)

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.

Input parameters:

- `payee_pubkey` (string, required)

### `channel_config` (~152 tokens)

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 (experimental) channel rail.

### `channel_status` (~57 tokens)

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.

Input parameters:

- `channel_id` (string, required)

### `payment_options` (~141 tokens)

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).

### `pay_per_call` (~157 tokens)

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.)

Input parameters:

- `endpoint` (string, required)
- `payment_id` (string, required)
- `request_body` (object, required)
- `scheme` (string, required)
- `txid` (string, required)

### `summarize` (~53 tokens)

Summarize text or a public URL in at most max_words. Paid (~$0.001 in KAS).

Input parameters:

- `max_words` (integer)
- `text` (string)
- `url` (string)

### `extract` (~65 tokens)

Extract structured data from text as JSON guaranteed to match your JSON schema
    (schema-constrained decoding, not best-effort). Paid (~$0.0015 in KAS).

Input parameters:

- `instruction` (string)
- `schema` (object, required)
- `text` (string, required)

### `rewrite` (~43 tokens)

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

Input parameters:

- `instruction` (string, required)
- `text` (string, required)

### `classify` (~70 tokens)

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).

Input parameters:

- `labels` (array, required)
- `multi` (boolean)
- `text` (string, required)

### `read_url` (~69 tokens)

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).

Input parameters:

- `distill` (boolean)
- `url` (string, required)

### `embed_text` (~44 tokens)

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

Input parameters:

- `texts` (array, required)

### `search_index` (~73 tokens)

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).

Input parameters:

- `collection` (string, required)
- `documents` (array, required)
- `replace` (boolean)

### `search_query` (~57 tokens)

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

Input parameters:

- `collection` (string, required)
- `q` (string, required)
- `top_k` (integer)

### `kaspa_balance` (~50 tokens)

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

Input parameters:

- `address` (string, required)

### `kaspa_utxos` (~52 tokens)

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

Input parameters:

- `address` (string, required)

### `kaspa_tx_status` (~63 tokens)

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).

Input parameters:

- `txid` (string, required)

### `kaspa_fee_estimate` (~37 tokens)

Current Kaspa mainnet feerate buckets (sompi per gram of tx mass). Paid (~$0.00015).

### `kaspa_network` (~40 tokens)

Kaspa mainnet status: DAA score, block count, difficulty, node sync state.
    Paid (~$0.00015 in KAS).

### `generate` (~154 tokens)

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.

Input parameters:

- `max_tokens` (integer)
- `prompt` (string, required)
- `system` (string)
- `tier` (string)

### `covenant_compile` (~93 tokens)

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.

Input parameters:

- `constructor_args` (array)
- `source` (string, required)

### `covenant_address` (~56 tokens)

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

Input parameters:

- `network` (string)
- `script_hex` (string, required)

### `covenant_utxos` (~69 tokens)

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

Input parameters:

- `address` (string, required)
- `covenant_id` (string)
- `network` (string)

### `covenant_build` (~168 tokens)

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).

Input parameters:

- `inputs` (array, required)
- `lock_time` (integer)
- `network` (string)
- `outputs` (array, required)
- `payload_hex` (string)

### `covenant_check` (~96 tokens)

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).

Input parameters:

- `entries` (array, required)
- `transaction` (object, required)

### `covenant_broadcast` (~58 tokens)

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

Input parameters:

- `network` (string)
- `transaction` (object, required)

### `prove_guest_upload` (~65 tokens)

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).

Input parameters:

- `program_b64` (string, required)

### `prove_preflight` (~80 tokens)

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).

Input parameters:

- `image_id` (string, required)
- `input_b64` (string)

### `prove_submit` (~112 tokens)

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).

Input parameters:

- `image_id` (string, required)
- `input_b64` (string)
- `max_kas` (number)
- `quote_id` (string)

### `job_status` (~36 tokens)

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

Input parameters:

- `job_id` (string, required)

### `job_result` (~52 tokens)

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

Input parameters:

- `job_id` (string, required)

### `attest_verify` (~64 tokens)

Verify a RISC Zero receipt against an image_id -> {valid, journal_b64}. Anyone can check an
    attestation without trusting the prover. Paid (~$0.0002).

Input parameters:

- `image_id` (string, required)
- `receipt_b64` (string, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/kali123411-k402/x402-compute#diagnostics

## Score history

- 2026-08-03: 58
- 2026-08-02: 58
- 2026-08-01: 57
- 2026-07-31: 57
- 2026-07-30: 57
- 2026-07-29: 12
- 2026-07-28: 56
- 2026-07-27: 55
- 2026-07-26: 54

## Links

- Remote endpoint: https://x402-compute.68cxgfyr0.workers.dev/mcp
- Changelog RSS feed: https://verifymcp.io/servers/kali123411-k402/x402-compute/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/kali123411-k402/x402-compute/changelog.json
- HTML version of this page: https://verifymcp.io/servers/kali123411-k402/x402-compute