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skill-market

R0· no sign-in

x402 skill catalog on lvlltd.com — search, quote, pay with Base USDC, unlock sealed packs.

v1.5.0 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality68needs work
Trust97of 100
Uptime, 30 days98%
Latency p50266 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "skill-market": {
      "type": "http",
      "url": "https://lvlltd.com/api/mcp"
    }
  }
}
claude mcp add --transport http skill-market https://lvlltd.com/api/mcp
[mcp_servers.skill-market]
url = "https://lvlltd.com/api/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "skill-market": {
      "type": "remote",
      "url": "https://lvlltd.com/api/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "skill-market": {
      "type": "http",
      "url": "https://lvlltd.com/api/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=skill-market&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbHZsbHRkLmNvbS9hcGkvbWNwIn0%3D"
}
{
  "servers": {
    "skill-market": {
      "type": "http",
      "url": "https://lvlltd.com/api/mcp"
    }
  }
}
{
  "mcpServers": {
    "skill-market": {
      "httpUrl": "https://lvlltd.com/api/mcp"
    }
  }
}
extensions:
  "skill-market":
    enabled: true
    name: "skill-market"
    type: streamable_http
    uri: "https://lvlltd.com/api/mcp"
    timeout: 300

Quality 68 / 100needs work

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene71 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • fail
    tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_payment_challenge (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); verify_skill (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); intent_search (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
  • pass
    tools.token_costabout 3,519 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability50 · weight 15
  • pass
    stability.changes2 tool changes in 30 days
  • fail
    stability.rug_pull1 tools kept their name but changed most of their description in 30 days; review before trusting them
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

59 tools, about 3,519 tokens to load them all · tool set 082e0b1427bb · tools last changed 2026-10-15 · checked 2026-10-20 16:30 UTC

Tool changes

  • paid_api_callchangedinput schema
  • get_proofchangeddescriptionmeaning changed
    before

    Public confirmed-only unlock ledger. Never invents volume. Optional skill_id filter.

    after · 44% of words in common

    Public on-chain unlock ledger (rows are self-funded test transactions, not customer purchases). Never invents volume. Optional skill_id filter.

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 97 / 100

provenance100
liveness99
freshness85
hygiene100

+repository +namespace-matches-repo +dns-namespace +website +reachable +uptime-98% ~updated-73d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://lvlltd.com/api/mcp streamable-httpnoneyes98%266 ms2025-06-182026-10-20

Tools (59)

a2a_bridge_infoA2A↔MCP bridge topology for LVL: when to use A2A vs MCP vs x402. Free.
a2a_discoverA2A bridge: fetch the marketplace Agent Card (/.well-known/agent-card.json). Free. Use before a2a_message_send.
a2a_message_sendA2A bridge: send message/send to the LVL A2A agent. Supports multi-turn via task_id+context_id. Does not settle payment — use purchase_skill / x402 for money.
a2a_tasks_cancelA2A bridge: tasks/cancel — cancel an in-flight multi-turn task.
a2a_tasks_getA2A bridge: tasks/get — poll stored multi-turn task by id.
bankr_quoteBankr unlock URL + LVL 402 challenge URL for a skill_id. Does not pay or unlock. Free.
bankr_railsBankr x402 Cloud rail for LVL skills (catalog/unlock/canary URLs + payTo). Does not unlock. Canonical settlement remains /api/pay. Free.
check_accessResolve skill access: one_time_unlock (perpetual) > catalog_sub > bundle_renew > meter. Never confuses live access with sealed ownership.
esp_cycleFull ESP cycle for a skill: free evaluate endpoints, atomic settle challenge, public prove stats (ledger-only quality). Free to call.
esp_discoverESP protocol root (Evaluate → Settle → Prove). Free. Philosophy + endpoints + canary. Prefer before settling any skill.
esp_evaluateESP Evaluate phase only — free outline/sample/canary links. Never requires payment. Settle only after this.
event_listList active event registrations for a topic.
event_registerRegister interest in a topic (stub event bus). Returns event_id.
event_triggerTrigger an event on a topic with optional payload (records + surfaces registrations).
get_capability_infoShort-lived capability token discovery (P1). Not an API key for purchase.
get_commerce_signalsRank skills by confirmed unlock demand. Free.
get_escrow_metaOpen-market multi-party escrow (NOT skill payTo). LVLEscrow held-fund contract metadata.
get_eval_scorePublic eval suite pass rate if suite exists. Free.
get_fleetFleet map: skills, open-market, music, swarm, studio bridges. Free.
get_networksMulti-chain + multi-asset + gas rails. Base live; other chains planned. Sponsored canary honesty.
get_pack_metaPublic sealed pack metadata + sealed_pack_hash (no paywall contents).
get_payment_challengeLive x402 402 challenge for a skill. Does not unlock. Pay then purchase_skill.
get_proofPublic on-chain unlock ledger (rows are self-funded test transactions, not customer purchases). Never invents volume. Optional skill_id filter.
get_readyTruthful readiness probe (/api/ready). ready:true only when payment+catalog rails work.
get_sandboxSandbox/execution patterns for purchased packs. Optional skill_id for per-skill resources + packaging maturity.
get_security_scanPublished security scan for a skill (real findings or clean-with-honesty). Free.
get_skill_detailsPublic skill details + outline/sample/challenge links. Free.
installAlias of install_skill_payload — after purchase write sealed files + SKILL.md paths. Requires tx_hash.
install_skill_payloadAfter purchase: sealed files + SKILL.md install paths. Requires tx_hash (routes through /api/pay).
intent_searchNatural-language goal → ranked skills/stacks (semantic TF-IDF). Free.
list_all_skillsPaginated full catalog listing (all public skills from catalog.json — not a subset). Free.
list_judgesRecursive evaluator market — judge/verifier/critic ESP skills. Quality from public proof ledger only. Free.
list_recurring_plansList catalog live / update / bundle-renew / metered plans. One-time unlocks remain separate and perpetual. Free.
long_running_cancelCancel a long-running task by task_id.
long_running_startStart a long-running / background task (KV queue stub). Returns task_id for status/cancel.
long_running_statusGet status of a long-running task by task_id.
lookup_agent_identityERC-8004 / local identity lookup for a wallet. Additive — not required to buy.
memory_forgetDelete a key from agent KV memory.
memory_listList keys in a memory namespace (prefix list when KV supports it).
memory_recallRecall a value from agent KV memory by key (+ optional namespace).
memory_rememberStore a key/value in agent KV memory (namespace optional, TTL default 24h).
meter_budgetGet or set spend cap; or quote metered per-call x402 for a skill. Caps prevent runaway agent spend.
paid_api_callMetered x402 API call (nothing over $5). Without tx_hash: 402 quote. With tx_hash: records the paid call. Discovery tools stay free. New billable APIs must go through this tool.
post_intentPost a root problem/intent with success_criteria and optional bounty_usd (P1). Free to post. Settlement still x402; success only via /api/proof.
purchase_skillWithout tx_hash: 402 + unsigned wallet_next_action (EIP-3009 PAYMENT-SIGNATURE template; no keys). With tx_hash or payment_signature: POST unlock via /api/pay (no payment bypass).
quote_priceAlias of get_payment_challenge — live x402 quote (amount, payTo, asset). Free. Full catalog.
quote_skillAlias of quote_price / get_payment_challenge — live x402 quote. Free.
receipt_mintMint a DecisionReceipt for an agent-side decision (same schema as access/pay). Free.
receipt_verifyVerify a lvl-decision-receipt-v1 integrity hash. Returns match + recomputed hash. Free.
sco_canaryParallel multi-provider canary: seal challengeable packs from independent oracle providers.
sco_challengeFile or resolve an economic challenge against a sealed SCO pack. Reputation updates from ledger only.
sco_consensusCritic/consensus oracle: aggregate sealed pack cids into a higher-confidence sealed consensus pack.
sco_discoverSCO protocol root (Sealed Consensus Oracles). Free. Philosophy, foundation oracles, agent sequence. Prefer before oracle settlement.
sco_evalSCO free evaluation for an oracle: outline, free samples, ledger-only reputation. Never requires payment.
sco_reputationLedger-derived oracle reputation only (accuracy, freshness, challenge_survival, selection_rate, economic_weight). Null when no evidence.
search_skillsSearch lvlltd.com x402 skill catalog. Free. Returns price + free_eval URLs.
subscribe_planWithout tx_hash: 402 challenge for a plan. With tx_hash: start/renew. Cancel: action=cancel (one step). Never revokes one-time unlocks.
verify_skillAlias of verify_unlock — check public /api/proof ledger for confirmed unlocks (never invents volume).
verify_unlockCheck public /api/proof ledger for confirmed unlocks (never invents volume).

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "com.lvlltd/skill-market",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://lvlltd.com/api/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.5.0",
  "repository": {
    "url": "https://github.com/lvlltd/lvlltd-agent-marketplace",
    "source": "github"
  },
  "websiteUrl": "https://lvlltd.com",
  "description": "x402 skill catalog on lvlltd.com — search, quote, pay with Base USDC, unlock sealed packs."
}