Skill Market MCP server
x402 skill catalog on lvlltd.com — search, quote, pay with Base USDC, unlock sealed packs.
Little public usage data yet
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If you have run it, two minutes of your experience saves the next person an afternoon.
Skill Market tools (59, 6 write)
write = sends, deletes, buys or postsa2a_bridge_infoFreeA2A↔MCP bridge topology for LVL: when to use A2A vs MCP vs x402. Free.
a2a_discoverFreeA2A bridge: fetch the marketplace Agent Card (/.well-known/agent-card.json). Free. Use before a2a_message_send.
a2a_message_sendwrite actionFreeA2A 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_cancelwrite actionFreeA2A bridge: tasks/cancel — cancel an in-flight multi-turn task.
a2a_tasks_getFreeA2A bridge: tasks/get — poll stored multi-turn task by id.
bankr_quoteFreeBankr unlock URL + LVL 402 challenge URL for a skill_id. Does not pay or unlock. Free.
bankr_railsFreeBankr x402 Cloud rail for LVL skills (catalog/unlock/canary URLs + payTo). Does not unlock. Canonical settlement remains /api/pay. Free.
check_accessFreeResolve skill access: one_time_unlock (perpetual) > catalog_sub > bundle_renew > meter. Never confuses live access with sealed ownership.
esp_cycleFreeFull ESP cycle for a skill: free evaluate endpoints, atomic settle challenge, public prove stats (ledger-only quality). Free to call.
esp_discoverFreeESP protocol root (Evaluate → Settle → Prove). Free. Philosophy + endpoints + canary. Prefer before settling any skill.
esp_evaluateFreeESP Evaluate phase only — free outline/sample/canary links. Never requires payment. Settle only after this.
event_listFreeList active event registrations for a topic.
event_registerFreeRegister interest in a topic (stub event bus). Returns event_id.
event_triggerFreeTrigger an event on a topic with optional payload (records + surfaces registrations).
get_capability_infoFreeShort-lived capability token discovery (P1). Not an API key for purchase.
get_commerce_signalsFreeRank skills by confirmed unlock demand. Free.
get_escrow_metaFreeOpen-market multi-party escrow (NOT skill payTo). LVLEscrow held-fund contract metadata.
get_eval_scoreFreePublic eval suite pass rate if suite exists. Free.
get_fleetFreeFleet map: skills, open-market, music, swarm, studio bridges. Free.
get_networksFreeMulti-chain + multi-asset + gas rails. Base live; other chains planned. Sponsored canary honesty.
get_pack_metaFreePublic sealed pack metadata + sealed_pack_hash (no paywall contents).
get_payment_challengeFreeLive x402 402 challenge for a skill. Does not unlock. Pay then purchase_skill.
get_proofFreePublic confirmed-only unlock ledger. Never invents volume. Optional skill_id filter.
get_readyFreeTruthful readiness probe (/api/ready). ready:true only when payment+catalog rails work.
get_sandboxFreeSandbox/execution patterns for purchased packs. Optional skill_id for per-skill resources + packaging maturity.
get_security_scanFreePublished security scan for a skill (real findings or clean-with-honesty). Free.
get_skill_detailsFreePublic skill details + outline/sample/challenge links. Free.
installFreeAlias of install_skill_payload — after purchase write sealed files + SKILL.md paths. Requires tx_hash.
install_skill_payloadFreeAfter purchase: sealed files + SKILL.md install paths. Requires tx_hash (routes through /api/pay).
intent_searchFreeNatural-language goal → ranked skills/stacks (semantic TF-IDF). Free.
list_all_skillsFreePaginated full catalog listing (all public skills from catalog.json — not a subset). Free.
list_judgesFreeRecursive evaluator market — judge/verifier/critic ESP skills. Quality from public proof ledger only. Free.
list_recurring_plansFreeList catalog live / update / bundle-renew / metered plans. One-time unlocks remain separate and perpetual. Free.
long_running_cancelwrite actionFreeCancel a long-running task by task_id.
long_running_startFreeStart a long-running / background task (KV queue stub). Returns task_id for status/cancel.
long_running_statusFreeGet status of a long-running task by task_id.
lookup_agent_identityFreeERC-8004 / local identity lookup for a wallet. Additive — not required to buy.
memory_forgetwrite actionFreeDelete a key from agent KV memory.
memory_listFreeList keys in a memory namespace (prefix list when KV supports it).
memory_recallFreeRecall a value from agent KV memory by key (+ optional namespace).
memory_rememberFreeStore a key/value in agent KV memory (namespace optional, TTL default 24h).
meter_budgetFreeGet or set spend cap; or quote metered per-call x402 for a skill. Caps prevent runaway agent spend.
paid_api_callFreeMetered 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_intentwrite actionFreePost a root problem/intent with success_criteria and optional bounty_usd (P1). Free to post. Settlement still x402; success only via /api/proof.
purchase_skillwrite actionFreeWithout 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_priceFreeAlias of get_payment_challenge — live x402 quote (amount, payTo, asset). Free. Full catalog.
quote_skillFreeAlias of quote_price / get_payment_challenge — live x402 quote. Free.
receipt_mintFreeMint a DecisionReceipt for an agent-side decision (same schema as access/pay). Free.
receipt_verifyFreeVerify a lvl-decision-receipt-v1 integrity hash. Returns match + recomputed hash. Free.
sco_canaryFreeParallel multi-provider canary: seal challengeable packs from independent oracle providers.
sco_challengeFreeFile or resolve an economic challenge against a sealed SCO pack. Reputation updates from ledger only.
sco_consensusFreeCritic/consensus oracle: aggregate sealed pack cids into a higher-confidence sealed consensus pack.
sco_discoverFreeSCO protocol root (Sealed Consensus Oracles). Free. Philosophy, foundation oracles, agent sequence. Prefer before oracle settlement.
sco_evalFreeSCO free evaluation for an oracle: outline, free samples, ledger-only reputation. Never requires payment.
sco_reputationFreeLedger-derived oracle reputation only (accuracy, freshness, challenge_survival, selection_rate, economic_weight). Null when no evidence.
search_skillsFreeSearch lvlltd.com x402 skill catalog. Free. Returns price + free_eval URLs.
subscribe_planFreeWithout tx_hash: 402 challenge for a plan. With tx_hash: start/renew. Cancel: action=cancel (one step). Never revokes one-time unlocks.
verify_skillFreeAlias of verify_unlock — check public /api/proof ledger for confirmed unlocks (never invents volume).
verify_unlockFreeCheck public /api/proof ledger for confirmed unlocks (never invents volume).
Public scan report
scanner v0.1.9 · 2026-09-23 · same rubric, same numbers if you re-run it
- –Code scanremote-only server, no package to scann/a
- Live reliabilityremote reachable in 364ms20/20
- Tool poisoning59 tool descriptions checked15/15
- Auth qualityopen endpoint exposes 6 write-action tools with no auth3/15
- Maintenancerepository not readable: repo not found3/15
- Maintainer identityverified namespace with website, no repo4/10
Findings (1)
- highWrite-action tools reachable without authentication
auth.open-write
Install directly
claude mcp add --transport http skill-market https://lvlltd.com/api/mcp
Skill Market: common questions
- Is Skill Market MCP server safe?
- With care: it is graded C, so read the findings first (60/100). Read the Skill Market safety report
- How do I install Skill Market?
- It runs remotely at lvlltd.com. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
- Does Skill Market need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is Skill Market maintained?
- The latest release is v1.5.0.
- Is Skill Market up?
- 100% of our last 20 checks got an answer. We check remote servers about four times a day.
- What can I use instead of Skill Market?
- Servers from other publishers that do the same job: Tenjin MCP server, Repomix MCP server and Silica Core MCP server. Compare all Skill Market alternatives.
Alternatives to Skill Market
Same job from other publishers: the closest match first, then the best rated.
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- Silica CoreRetrieval over the folder the session opened: files, search, read, code_pack, write_note.not reviewedEstablishedA
- HasData BingBing search results with the ad block and Copilot answer, geo and market targeting, as JSON.not reviewedGrowingA
- SeatableMCP server for SeaTable — read, write, search, link, and query data in your basesnot reviewedGrowingA