Every change Wellknown observed on this MCP server, newest first, with what it was before and what it became. Tool-surface changes carry the definition diff. Nothing here is edited after the fact.
Added "agent_distribution_pack"; changed the definition of "provider_launch_check" (35 tools before, 36 now)
Paid $0.05 USDC seller-side agent-distribution entry check: verify provider readiness and the live x402 contract,verificationthenbeforeuseAgentResolvertheprovider-network$5review.Distribution Pack when discoverability artifacts or launch fixes are needed.
Agent distribution pack — $5 — Paid $5 USDC seller-side agent distribution pack for API/MCP discoverability: live discovery audit, ready-to-commit agent-readable artifacts, and a prioritized API/MCP distribution sequence.
Certificate recorded, valid to 2026-11-27
Authorization not required
Changed the definition of "procure" and "resolve"
FindCALLanTHIS when the agent's installed tools do not clearly satisfy the current task. Free open-world procurement across externalAPIAPIs, MCPserverservers, x402/L402/MPPserviceservices,orand registeredproviderproviders.thatItsatisfiesenforces
Changed the definition of "procure", "resolve" and "verified_resolve"
FreeCALLopen-worldTHISmulti-protocolwhenprocurement.theDeclareagent's installed tools do not clearly satisfy thecapabilitycurrentneededtask.plusFreehardopen-worldbudget,
First tool surface recorded: 2 tools (server version 0.1.0)
https://agentresolver.vercel.app/mcp/control (mcp_streamable_http) — from mcp_registry
Added "procure" and "provider_bootstrap"; changed the definition of "verified_resolve" (33 tools before, 35 now)
Paid $0.02 USDC on Base or Solanacapability resolutionprocurement plus up to two unpaid live verification probes acrosstopthe same open-world candidate universe used by free procurement. Live verification currently covers MCP andx402/HTTPx402;marketplaceL402/MPPcandidates.are labeled discovery-only. x402-aware MCP clients can authorize and settle inside this tool call.
Added "provider_launch_check" (32 tools before, 33 now)
Provider launch check — $0.05 — Paid $0.05 USDC seller-side readiness and x402 contract verification before AgentResolver provider-network review.
Changed the definition of "hash_encode", "payment_guard", "x402_payment_preflight" and 1 more
before
—after
{"$schema":"https://json-schema.org/draft/2020-12/schema","anyOf":[{"additionalProperties":false,"properties":{"encoding":{"enum":["hex","base64","utf8"],"type":"string"},"inputBytes":{"maximum":9007199254740991,"minimum":0,"type":"integer"},"operation":{"enum":["sha256","sha512","hmac-sha256","base64-encode","base64-decode"],"type":"string"},"result":{"type":"string"}},"required":["operation","inputBytes","encoding","result"],"type":"object"},{"additionalProperties":false,"properties":{"header":{},"inputBytes":{"maximum":9007199254740991,"minimum":0,"type":"integer"},"note":{"type":"string"},"operation":{"const":"jwt-decode","type":"string"},"payload":{},"signature":{"type":"string"},"verified":{"const":false,"type":"boolean"}},"required":["operation","inputBytes","verified","note","header","payload","signature"],"type":"object"}],"type":"object"}—
Added "payment_guard" (31 tools before, 32 now)
AgentResolver Guard — verify before every x402 payment — $0.001 — Paid $0.001 USDC fail-closed payment authorization preflight. Use immediately before an autonomous agent signs a target x402 payment. Returns eligible/blocked, exact observed payment terms, reason codes, evidence receipt and stable fingerprints. The caller retains sole spending authority.
Changed the definition of "x402_payment_preflight" and "x402_ping"
X402 preflight — verify endpoint before paying — endpoint safety — USDC payment check — $0.001
⟨9 unchanged words⟩ X402 preflight — verify endpoint before paying — endpoint safety — USDC payment check — $0.001"}
x402 settlement test — wallet facilitator payment test — Certificate recorded, valid to 2026-11-27
Authorization not required
Changed the definition of "x402_payment_preflight" and "x402_ping"
Paid $0.001 USDC on Base or Solanaboundedtransaction-pathx402gatepreflight.forNoautonomousprivatebuyers.keyReturnsoreligible/blocked, exact target paymentis requested. Verify payTo, quote, networkterms,asset,fail-closed
Added "x402_payment_preflight"; changed the definition of "abi_decode", "abi_encode", "agent_readiness" and 25 more (30 tools before, 31 now)
Paid $0.005USDC/BaseUSDC on Base or Solana exact Ethereum ABI decoding into JSON-safe typed values.
Paid $0.005USDC/BaseUSDC on Base or Solana exact Ethereum ABI encoding from Solidity typed JSON values to calldata-ready hex.
Added "abi_decode", "abi_encode", "base64_decode" and 19 more (8 tools before, 30 now)
Ethereum ABI decode — $0.005 — Paid $0.005 USDC/Base exact Ethereum ABI decoding into JSON-safe typed values.
Ethereum ABI encode — $0.005 — Paid $0.005 USDC/Base exact Ethereum ABI encoding from Solidity typed JSON values to calldata-ready hex.
Base64 decode — $0.001 — Paid $0.001 USDC/Base Base64 to UTF-8 decoding.
Base64 encode — $0.001 — Paid $0.001 USDC/Base UTF-8 to Base64 encoding.
EIP-712 typed-data hash — $0.005 — Paid $0.005 USDC/Base exact EIP-712 typed-data digest for signing and verification workflows.
Added "agent_readiness", "batch_verified_resolve", "http_inspect" and 4 more; changed the definition of "resolve" (1 tools before, 8 now)
DEFAULT DISCOVERY TOOL. Call thisFreewheneverdefaultyoudiscovery.needFindarankedtooltools,APIAPIs, MCPserver, data source, web service, automation, or other external capability that is not already clearly available. Returns ranked optionsservers and,when discovery cannot establish live runtime
Removed "list_capabilities"; changed the definition of "resolve" (2 tools before, 1 now)
before
—after
Resolve a missing capabilityFreeDEFAULTuniversalDISCOVERYcapabilityTOOL.resolver.CallSearchesthisAgentResolver-ownedwhenevercapabilities
Unknown → Live
First tool surface recorded: 2 tools (server version 0.1.0)
https://agentresolver.vercel.app/mcp (mcp_streamable_http) — from mcp_registry, with the record
Showing the latest 22 events. The API returns up to 500 and filters by kind: ?kind=tool_surface_changed
Broad freeExploratory discovery only. Use this when the caller is browsing possible capabilities and does not yethaveneedanaexacttrustworthycontract.executionReturnschoice.AgentResolver-ownedForcapabilities,anregisteredactualprovidertaskroutes,thatMCPthematches,agent'sandinstalledmarketplace/x402toolsmatches.cannotUsesatisfy, prefer procureinsteadsowhencompatibilityhardfailscompatibilityclosedorandbudgetunresolvedconstraintsevidencemustcanbeescalateenforced.to optional paid verification.
Resolve aExploremissingpossiblecapabilitycapabilities
Freedefaultexploratory discovery.FindUserankedonlytools,whenAPIs,browsingMCPpossibleserverstools/APIs/MCPandservicesmachinewithoutservicesneeding a trustworthy execution choice yet. For an actual missing capability,withpreferaprocureprefilledsopaidrequiredlive-evidenceevidenceactionfailswhencloseduseful.and unresolved candidates can escalate to verification.
LiveVerifyverifiedanresolveunresolved external capability — $0.02
PaidPAID $0.02 USDConverificationBasestep.orUseSolanaafterprocurementprocureplusreturnsupnotoproventwoselectionunpaid/liveeligible_with_unknowns,verificationorprobesimmediatelyacrossbeforethetrustingsameanopen-worldunfamiliarcandidateexternaluniversecandidateusedwhenbylivefreeevidenceprocurement.isLiverequired.verificationRe-checkscurrentlysupportedcoversendpoint, MCP, x402 andx402;contractL402/MPPevidenceareandlabeledreturnsdiscovery-only.ax402-awarefail-closedMCPrecommendation.clientsCallcanonlyauthorizewhenandthesettlehostinsideindependentlythisauthorizestoolthecall.displayed spend.
Procure a compatible capability — Free open-world multi-protocol procurement. Declare the capability needed plus hard budget, network, protocol, schema, side-effect and auth constraints across x402, L402, MPP and MCP. AgentResolver rejects incompatible candidates, surfaces unknown evidence explicitly, and returns a non-custodial execution/payment handoff without authorizing spend.
Bootstrap a domain-controlled provider — Free zero-state provider onboarding. Reads the fixed AgentResolver well-known manifest on one HTTPS origin, live-verifies selected same-origin x402 payment identities, returns an immediate providerOrigins procurement seed, and prepares caller-owned durable 402 Index registration actions. AgentResolver does not persist provider state or send the external registration.
after
{"$schema":"https://json-schema.org/draft/2020-12/schema","additionalProperties":{},"properties":{"evidenceReceipt":{"additionalProperties":{},"properties":{},"type":"object"},"guard":{"additionalProperties":{},"properties":{"decision":{"enum":["eligible","blocked"],"type":"string"},"eligibleForCallerAuthorization":{"type":"boolean"},"evidenceDigestSha256":{"type":"string"},"paymentIdentityFingerprint":{"type":["string","null"]},"paymentTermsFingerprint":{"type":["string","null"]},"product":{"const":"AgentResolver Guard","type":"string"},"reasonCodes":{"items":{"type":"string"},"type":"array"}},"required":["product","decision","eligibleForCallerAuthorization","reasonCodes","evidenceDigestSha256","paymentIdentityFingerprint","paymentTermsFingerprint"],"type":"object"},"latencyMs":{"minimum":0,"type":"number"},"ok":{"type":"boolean"},"prepaymentDecision":{"additionalProperties":{},"properties":{"decision":{"enum":["eligible","blocked"],"type":"string"},"eligibleForCallerAuthorization":{"type":"boolean"},"reasons":{"items":{"type":"string"},"type":"array"}},"required":["decision","eligibleForCallerAuthorization","reasons"],"type":"object"},"status":{"maximum":9007199254740991,"minimum":-9007199254740991,"type":"integer"},"url":{"type":"string"}},"required":["url","status","ok","latencyMs","guard","prepaymentDecision","evidenceReceipt"],"type":"object"}before
—after
{"$schema":"https://json-schema.org/draft/2020-12/schema","additionalProperties":{},"properties":{"evidenceReceipt":{"additionalProperties":{},"properties":{},"type":"object"},"guard":{"additionalProperties":{},"properties":{"decision":{"enum":["eligible","blocked"],"type":"string"},"eligibleForCallerAuthorization":{"type":"boolean"},"evidenceDigestSha256":{"type":"string"},"paymentIdentityFingerprint":{"type":["string","null"]},"paymentTermsFingerprint":{"type":["string","null"]},"product":{"const":"AgentResolver Guard","type":"string"},"reasonCodes":{"items":{"type":"string"},"type":"array"}},"required":["product","decision","eligibleForCallerAuthorization","reasonCodes","evidenceDigestSha256","paymentIdentityFingerprint","paymentTermsFingerprint"],"type":"object"},"latencyMs":{"minimum":0,"type":"number"},"ok":{"type":"boolean"},"prepaymentDecision":{"additionalProperties":{},"properties":{"decision":{"enum":["eligible","blocked"],"type":"string"},"eligibleForCallerAuthorization":{"type":"boolean"},"reasons":{"items":{"type":"string"},"type":"array"}},"required":["decision","eligibleForCallerAuthorization","reasons"],"type":"object"},"status":{"maximum":9007199254740991,"minimum":-9007199254740991,"type":"integer"},"url":{"type":"string"}},"required":["url","status","ok","latencyMs","guard","prepaymentDecision","evidenceReceipt"],"type":"object"}before
—after
{"$schema":"https://json-schema.org/draft/2020-12/schema","additionalProperties":false,"properties":{"at":{"type":"string"},"echo":{"type":["string","null"]},"next":{"additionalProperties":false,"properties":{"batch":{"additionalProperties":{},"properties":{"capabilityId":{"type":"string"},"endpoint":{"format":"uri","type":"string"},"inputExample":{"additionalProperties":{},"propertyNames":{"type":"string"},"type":"object"},"method":{"const":"POST","type":"string"},"priceUsd":{"minimum":0,"type":"number"},"useWhen":{"type":"string"}},"required":["capabilityId","endpoint","method","priceUsd","useWhen","inputExample"],"type":"object"},"catalogUrl":{"format":"uri","type":"string"},"preflight":{"additionalProperties":{},"properties":{"capabilityId":{"type":"string"},"endpoint":{"format":"uri","type":"string"},"inputExample":{"additionalProperties":{},"propertyNames":{"type":"string"},"type":"object"},"method":{"const":"GET","type":"string"},"priceUsd":{"minimum":0,"type":"number"},"useWhen":{"type":"string"}},"required":["capabilityId","endpoint","method","priceUsd","useWhen","inputExample"],"type":"object"},"recommended":{"additionalProperties":{},"properties":{"capabilityId":{"type":"string"},"endpoint":{"format":"uri","type":"string"},"inputExample":{"additionalProperties":{},"propertyNames":{"type":"string"},"type":"object"},"method":{"const":"GET","type":"string"},"paymentAuthorization":{"const":"separate_caller_authorization_required","type":"string"},"priceUsd":{"minimum":0,"type":"number"},"reason":{"type":"string"},"repeatUse":{"type":"string"},"useWhen":{"type":"string"}},"required":["capabilityId","endpoint","method","priceUsd","useWhen","inputExample","reason","repeatUse","paymentAuthorization"],"type":"object"},"settlementVerify":{"additionalProperties":{},"properties":{"capabilityId":{"type":"string"},"endpoint":{"format":"uri","type":"string"},"inputExample":{"additionalProperties":{},"propertyNames":{"type":"string"},"type":"object"},"method":{"const":"GET","type":"string"},"paymentAuthorization":{"const":"separate_caller_authorization_required","type":"string"},"priceUsd":{"minimum":0,"type":"number"},"transactionHashSource":{"type":"string"},"useWhen":{"type":"string"}},"required":["capabilityId","endpoint","method","priceUsd","useWhen","inputExample","transactionHashSource","paymentAuthorization"],"type":"object"},"single":{"additionalProperties":{},"properties":{"capabilityId":{"type":"string"},"endpoint":{"format":"uri","type":"string"},"inputExample":{"additionalProperties":{},"propertyNames":{"type":"string"},"type":"object"},"method":{"const":"POST","type":"string"},"priceUsd":{"minimum":0,"type":"number"},"useWhen":{"type":"string"}},"required":["capabilityId","endpoint","method","priceUsd","useWhen","inputExample"],"type":"object"}},"required":["catalogUrl","recommended","preflight","settlementVerify","single","batch"],"type":"object"},"pong":{"const":true,"type":"boolean"},"requestId":{"type":"string"},"settledDelivery":{"const":true,"type":"boolean"},"unixMs":{"maximum":9007199254740991,"minimum":0,"type":"integer"}},"required":["pong","settledDelivery","at","unixMs","requestId","echo","next"],"type":"object"}⟨7 unchanged words⟩ :true,"title":"x402 settlement test — wallet facilitator payment test — $0.001"}
x402 settlementpingtest — $0.001
Paid $0.001 USDC on Base or Solana no-body settlementcanary.canary for funded agents. Returns a timestamped pong only after successful x402 paymentsotoclientsverifycanwallet,verifyfacilitator,theirpayment,wallet/facilitatorandpath.delivery end-to-end.
⟨6 unchanged words⟩ ,"readOnlyHint":true,"title":"x402 settlementpingtest — $0.001"}
Paid $0.005USDC/BaseUSDC on Base or Solana audit of a public website for agent discoverability ⟨15 unchanged words⟩
Paid $0.001USDC/BaseUSDC on Base or Solana Base64 to UTF-8 decoding.
Paid $0.001USDC/BaseUSDC on Base or Solana UTF-8 to Base64 encoding.
Paid $0.05USDC/BaseUSDC on Base or Solana batch live verification for 2–4 capability decisions using ⟨16 unchanged words⟩
Paid $0.005USDC/BaseUSDC on Base or Solana exact EIP-712 typed-data digest for signing and verification workflows.
Paid $0.01USDC/BaseUSDC on Base or Solana ENSIP-15 normalization, exact ENS namehash and label hashes.
Paid $0.003USDC/BaseUSDC on Base or Solana exact EIP-55 address validation and checksum normalization.
Paid $0.005USDC/BaseUSDC on Base or Solana exact decimal/base-unit conversion with arbitrary token decimals.
Paid $0.001USDC/BaseUSDC on Base or Solana deterministic SHA-256, SHA-512, HMAC-SHA256, Base64 encode/decode, ⟨15 unchanged words⟩
Paid $0.001USDC/BaseUSDC on Base or Solana HMAC-SHA256 hex digest.
HTTPx402inspectionpayment preflight + PayTo verification — $0.001
Paid $0.001USDC/BaseUSDCinspectiononofBaseoneorpublicSolanaHTTPSverify-before-payresourceendpointforsafetystatus,check:latencypayTo verification,responsequotemetadataprice,cachenetwork,validatorsasset,TLS/certificateresourceevidencebinding andbaselinex402securitychallengeheaders.compliancex402-awarebeforeMCPanclientsagentcanauthorizesauthorizespend.andPOSTsettleprobesinsiderequirethisexplicittoolcallercall.opt-in because an unprotected endpoint could have side effects.
⟨4 unchanged words⟩ openWorldHint":true,"readOnlyHint":true,"title":"HTTPx402inspectionpayment preflight + PayTo verification — $0.001"}
Paid $0.001USDC/BaseUSDC on Base or Solana canonical JSON normalization plus SHA-256 digest.
Paid $0.001USDC/BaseUSDC on Base or Solana deterministic JSON Schema subset validation.
Paid $0.001USDC/BaseUSDC on Base or Solana non-verifying JWT header/payload decode.
Paid $0.004USDC/BaseUSDC on Base or Solana exact Ethereum keccak256 digest for UTF-8 text or hex bytes.
Paid $0.001USDC/BaseUSDC on Base or Solana live MCP endpoint preflight for reachability, compatibility, ⟨17 unchanged words⟩
Paid $0.005USDC/BaseUSDC on Base or Solana selection of the best operation from one public ⟨23 unchanged words⟩
Paid $0.001USDC/BaseUSDC on Base or Solana SHA-256 digest of bounded UTF-8 text.
Paid $0.001USDC/BaseUSDC on Base or Solana SHA-512 digest of bounded UTF-8 text.
Paid $0.001USDC/BaseUSDC on Base or Solana deterministic slug generation.
Paid $0.01USDC/BaseUSDC on Base or Solana exact 4-byte Solidity selector and full keccak256 signature hash.
Paid $0.005USDC/BaseUSDC on Base or Solana deterministic JSON-schema compatibility check between one tool output ⟨24 unchanged words⟩
Paid $0.001USDC/BaseUSDC on Base or Solana absolute URL parser.
Paid $0.001USDC/BaseUSDC on Base or Solana UUID v4 generation, up to 20 IDs.
Paid $0.02USDC/BaseUSDC on Base or Solana capability resolution plus up to two unpaid live ⟨20 unchanged words⟩
Paid $0.001USDC/BaseUSDC on Base or Solana settlement canary. Returns a timestamped pong only after ⟨10 unchanged words⟩
X402 preflight — verify endpoint before paying — $0.001 — Paid $0.001 USDC on Base or Solana bounded x402 preflight. No private key or target payment is requested. Verify payTo, quote, network, asset, resource binding and live challenge evidence before agent spend; receive stable observed-identity and payment-terms fingerprints for change detection; response headers include request correlation and exact deployment provenance.
ENS namehash — $0.01 — Paid $0.01 USDC/Base ENSIP-15 normalization, exact ENS namehash and label hashes.
EVM address checksum — $0.003 — Paid $0.003 USDC/Base exact EIP-55 address validation and checksum normalization.
EVM units convert — $0.005 — Paid $0.005 USDC/Base exact decimal/base-unit conversion with arbitrary token decimals.
Hash & encode — $0.001 — Paid $0.001 USDC/Base deterministic SHA-256, SHA-512, HMAC-SHA256, Base64 encode/decode, or non-verifying JWT decode. x402-aware MCP clients can authorize and settle inside this tool call.
HMAC SHA-256 — $0.001 — Paid $0.001 USDC/Base HMAC-SHA256 hex digest.
JSON normalize — $0.001 — Paid $0.001 USDC/Base canonical JSON normalization plus SHA-256 digest.
JSON Schema validate — $0.001 — Paid $0.001 USDC/Base deterministic JSON Schema subset validation.
JWT decode — $0.001 — Paid $0.001 USDC/Base non-verifying JWT header/payload decode.
Keccak-256 — $0.004 — Paid $0.004 USDC/Base exact Ethereum keccak256 digest for UTF-8 text or hex bytes.
SHA-256 hash — $0.001 — Paid $0.001 USDC/Base SHA-256 digest of bounded UTF-8 text.
SHA-512 hash — $0.001 — Paid $0.001 USDC/Base SHA-512 digest of bounded UTF-8 text.
Slugify — $0.001 — Paid $0.001 USDC/Base deterministic slug generation.
Solidity selector — $0.01 — Paid $0.01 USDC/Base exact 4-byte Solidity selector and full keccak256 signature hash.
Provider sponsorship information — Free read-only information for tool/API/MCP providers about AgentResolver's explicitly labeled sponsorship pilot. Organic ranking remains independent; applying creates no purchase or financial commitment.
URL parse — $0.001 — Paid $0.001 USDC/Base absolute URL parser.
UUID v4 — $0.001 — Paid $0.001 USDC/Base UUID v4 generation, up to 20 IDs.
x402 settlement ping — $0.001 — Paid $0.001 USDC/Base settlement canary. Returns a timestamped pong only after successful x402 payment so clients can verify their wallet/facilitator path.
{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"goal":{"description":"The missing capability in plain language, including useful constraints. Examples: 'verify this MCP endpoint and list its tools'; 'audit this website for agent discoverability'; 'render a JavaScript page and extract structured product data'.","minLength":1,"type":"string"},"limit":{"description":"Maximum ranked matches per result group. Omit for the default of 3.","maximum":10,"minimum":1,"type":"integer"},"url":{"description":"Optional target URL if the task concerns a specific web resource.","format":"uri","type":"string"} ⟨4 unchanged words⟩
Agent-readiness audit — $0.005 — Paid $0.005 USDC/Base audit of a public website for agent discoverability and machine-readable integration signals. x402-aware MCP clients can authorize and settle inside this tool call.
Batch verified resolve — $0.05 — Paid $0.05 USDC/Base batch live verification for 2–4 capability decisions using unpaid MCP and x402/HTTP evidence. x402-aware MCP clients can authorize and settle inside this tool call.
HTTP inspection — $0.001 — Paid $0.001 USDC/Base inspection of one public HTTPS resource for status, latency, response metadata, cache validators, TLS/certificate evidence and baseline security headers. x402-aware MCP clients can authorize and settle inside this tool call.
MCP live preflight — $0.001 — Paid $0.001 USDC/Base live MCP endpoint preflight for reachability, compatibility, latency, server metadata and tool inventory. x402-aware MCP clients can authorize and settle inside this tool call.
OpenAPI operation selection — $0.005 — Paid $0.005 USDC/Base selection of the best operation from one public JSON OpenAPI spec for a stated goal. Returns a compact execution-ready contract. x402-aware MCP clients can authorize and settle inside this tool call.
Tool contract fit — $0.005 — Paid $0.005 USDC/Base deterministic JSON-schema compatibility check between one tool output and the next tool input. Returns exact incompatibility reasons and conservative normalized mappings. x402-aware MCP clients can authorize and settle inside this tool call.
Live verified resolve — $0.02 — Paid $0.02 USDC/Base capability resolution plus up to two unpaid live verification probes across top MCP and x402/HTTP marketplace candidates. x402-aware MCP clients can authorize and settle inside this tool call.
{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"goal":{"description":"The missing capability in plain language, including useful constraints. Examples: 'verify this MCP endpoint and list its tools'; 'audit this website for agent discoverability'; 'render a JavaScript page and extract structured product data'.","minLength":1,"type":"string"},"limit":{"description":"Maximum ranked matches per result group. Omit for the default of 3.","maximum":10,"minimum":1,"type":"integer"},"url":{"description":"Optional target URL if the task concerns a specific web resource.","format":"uri","type":"string"} ⟨4 unchanged words⟩
{"destructiveHint":false,"idempotentHint":true,"openWorldHint":true,"readOnlyHint":true,"title":"Resolve a missing capability"}
List AgentResolver-owned capabilities and current prices/status.