{"data":{"slug":"salt19-agent-utility-grid","name":"SALT19 Agent Utility Grid","description":"MCP/x402 decision and verification utilities for autonomous software agents, paid in USDC on Base.","base_url":"https://api.salt19.com","website_url":"https://salt19.com/agent-utility-grid/","category":"Verification","endpoint_count":14,"min_price_usd":0.01,"uptime_24h":74.1,"source":"submitted","status":"online","verified":false,"verified_until":null,"payment_ready":true,"payment_ready_until":"2026-10-23T07:12:09.138Z","last_success_at":"2026-10-16T07:12:09.138Z","consecutive_failures":1,"check_interval_minutes":15,"last_checked_at":"2026-10-16T07:28:30.111Z","created_at":"2026-08-31T17:40:38.272Z","uptime":{"24h":74.1,"7d":77,"30d":77.9,"90d":84.8,"coverage":{"24h":{"daysCovered":1,"checkCount":27},"7d":{"daysCovered":7,"checkCount":566},"30d":{"daysCovered":30,"checkCount":2634},"90d":{"daysCovered":47,"checkCount":4094}}},"avg_response_time_ms":537,"total_checks":2715,"networks":["BSE"],"networks_caip2":["eip155:8453"],"asset":"USDC","endpoints":[{"id":"c793ff8b-da42-4d3c-8e5e-c089240d68df","method":"POST","path":"/v1/agent-claim-output-verifier","description":"Map an autonomous agent claim or output to supplied evidence and return SUPPORTED, PARTIALLY_SUPPORTED, NOT_PROVEN, or CONTRADICTED with explicit unsupported elements, contradictions, missing evidence, and recommended verification.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.038Z","variable_amount":false,"min_price_usd":0.45,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"450000","price_usd":"0.4500000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"1aa2d2e9-e6db-49ab-9be5-476d03a8d953","method":"POST","path":"/v1/agent-code-change-risk-gate","description":"Static pre-merge risk gate for autonomous code changes: inspect a supplied unified diff for security-sensitive surfaces, destructive operations, architecture/constraint conflicts, test requirements, rollback risk, and bounded breaking-change risk before an agent merges or deploys.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.120Z","variable_amount":false,"min_price_usd":1.21,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"1210000","price_usd":"1.2100000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"b9fe0d49-f006-45b8-94d5-43a6d8eda637","method":"POST","path":"/v1/agent-decision-preflight","description":"Before an autonomous coding agent installs or adopts software, return a bounded GO, WARN, or BLOCK decision with evidence and a portable SALT19 verification receipt.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.049Z","variable_amount":false,"min_price_usd":0.45,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"450000","price_usd":"0.4500000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"a38519ab-5faf-4109-9f13-503cf4976a3c","method":"POST","path":"/v1/agent-plan-verifier","description":"Verify an autonomous agent plan before execution for missing preconditions, destructive steps, unsafe ordering, goal misalignment, constraint violations, and repair actions, returning a bounded GO/WARN/BLOCK result.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.091Z","variable_amount":false,"min_price_usd":0.72,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"720000","price_usd":"0.7200000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"c31fa421-c9f7-4130-b388-af709a91dcc7","method":"POST","path":"/v1/commerce-decision","description":"Before an autonomous agent pays an x402 challenge, bind the request, accepted payment offer, and machine spending policy into a deterministic GO/WARN/BLOCK decision with SHA-256 commitments.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.060Z","variable_amount":false,"min_price_usd":0.01,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"10000","price_usd":"0.0100000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"b16d5006-34d4-4520-890e-4fd3c068d652","method":"POST","path":"/v1/commerce-receipt","description":"Verify an x402 commercial state and persist a signed Ed25519 Proof402 receipt whose Commerce State Root commits request, offer, policy, payment, settlement, and delivery evidence; receipts are later Merkle-batched for public inclusion proofs.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:08.782Z","variable_amount":false,"min_price_usd":0.03,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"30000","price_usd":"0.0300000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"a709fd37-19ce-451f-9c83-dfdbd567595f","method":"POST","path":"/v1/commerce-verify","description":"Verify that an x402 v2 payment payload, settlement evidence, original request, accepted offer, spending policy, and delivered response are mutually bound; SALT19 operations can additionally be checked against authoritative D1 commercial state.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.083Z","variable_amount":false,"min_price_usd":0.01,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"10000","price_usd":"0.0100000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"378e529f-fc98-45cb-a70a-edb2b857005d","method":"POST","path":"/v1/dependency-go-no-go","description":"Dependency approval decision for coding agents: decide whether an npm dependency or package is safe to install or adopt and return GO, WARN, or BLOCK using vulnerabilities, security, license, maintenance, deprecation, and package metadata.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:08.829Z","variable_amount":false,"min_price_usd":0.2,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"200000","price_usd":"0.2000000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"32fd98f7-592b-4dea-8bab-784467fae3e8","method":"POST","path":"/v1/dependency-upgrade-go-no-go","description":"Compare current and target npm versions and return GO/WARN/BLOCK plus UPGRADE/DEFER/BLOCK guidance, bounded semver risk, OSV security implications, recommended tests, and explicit NOT_PROVEN runtime, peer, migration, and ecosystem compatibility boundaries.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.109Z","variable_amount":false,"min_price_usd":0.16,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"160000","price_usd":"0.1600000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"ca8b56f4-2f18-497b-87d6-f321bb6c818b","method":"POST","path":"/v1/github-repo-preflight","description":"GitHub repository due diligence for coding agents: evaluate whether a public or open-source repository is safe and maintained enough to adopt using license, maintenance, release freshness, activity, project health, and risk signals.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:08.886Z","variable_amount":false,"min_price_usd":0.09,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"90000","price_usd":"0.0900000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"57036b1a-0436-4b26-9e2f-f741809abbfc","method":"POST","path":"/v1/model-memory-fit","description":"Can this AI model run on my graphics card? Estimate model memory requirements and check whether a quantized LLM fits available GPU VRAM before loading or local inference.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:08.754Z","variable_amount":false,"min_price_usd":0.05,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"50000","price_usd":"0.0500000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"02282219-abd6-4d26-88eb-3cdbe77a5421","method":"POST","path":"/v1/npm-package-intel","description":"Check whether an npm package is deprecated or vulnerable before installing it, including vulnerabilities, license, maintenance, freshness, dependency health, and package.json risk signals.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.075Z","variable_amount":false,"min_price_usd":0.03,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"30000","price_usd":"0.0300000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"199a0f5e-1d91-410e-992c-e45260f9ca56","method":"POST","path":"/v1/repo-adoption-go-no-go","description":"Repository adoption decision for autonomous coding agents using public GitHub maintenance, archive, license, and repository-health evidence, with explicit UNKNOWN and NOT_PROVEN boundaries for dependency, security, compatibility, integration, and project-fit claims.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.028Z","variable_amount":false,"min_price_usd":0.35,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"350000","price_usd":"0.3500000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]},{"id":"77300ac5-057f-4da5-b3ab-1818782bcc27","method":"POST","path":"/v1/url-http-preflight","description":"Inspect a URL before an autonomous agent calls it, and preflight or verify a website or external API endpoint is healthy and safe to call by checking HTTP status, redirects, latency, and security headers.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-08-31T17:40:38.272Z","last_seen_at":"2026-10-16T07:12:09.067Z","variable_amount":false,"min_price_usd":0.03,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"30000","price_usd":"0.0300000000","pay_to":"0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f","max_timeout_seconds":300}]}],"assessment":{"updated_at":"2026-10-16T07:13:01.488Z","input_hash":"4a1bc2a7adb293a79503588e43b218913ab5c890a716ff2ff6fdca6d698bc80c","model_id":null,"prompt_version":null,"reliability":{"uptime":{"24h":74.1,"7d":77,"30d":77.9,"90d":84.8},"response_p95_ms":873,"avg_response_ms":537,"last_checked_at":"2026-10-16T07:12:09.138Z","consecutive_failures":0,"total_checks":2714},"compliance":{"grade":"A","passed":14,"total":14,"checks":[{"id":"payload_captured","label":"402 payload captured","pass":true},{"id":"accepts_present","label":"accepts[] array present","pass":true},{"id":"payto_recoverable","label":"payTo address recoverable","pass":true},{"id":"payto_conformant","label":"payTo at accepts[0].payTo (conformant shape)","pass":true},{"id":"payto_shape","label":"payTo is a valid on-chain address","pass":true},{"id":"price_present","label":"atomic price declared","pass":true},{"id":"price_sane","label":"atomic price in a sane range","pass":true},{"id":"asset_declared","label":"asset (token) address declared","pass":true},{"id":"network_caip2","label":"network resolves to CAIP-2","pass":true},{"id":"scheme_declared","label":"payment scheme declared","pass":true},{"id":"transport_https","label":"served over HTTPS","pass":true},{"id":"x402_version_current","label":"declares the current x402 version (2)","pass":true},{"id":"eip712_domain_extra","label":"EIP-712 domain parameters present on every EVM entry","pass":true},{"id":"version_channel_coherent","label":"x402 v2 envelope delivered in the payment-required header","pass":true}],"pay_to_source":"payTo","pay_to_location":"accept","staleness":{"probe_failing":false,"last_success_at":"2026-10-16T07:12:09.138Z","envelope_captured_at":"2026-10-16T07:12:09.138Z"}},"site":{"homepage":false,"openapi":true,"pricing":false,"llms_txt":true,"robots":false,"terms":false,"checked_at":"2026-10-15T21:53:00.251Z"},"domain":{"age_days":177,"registrar":"GoDaddy.com, LLC","free_host":false,"created_date":"2026-04-18T22:44:22.000Z","checked_at":"2026-10-13T21:43:01.649Z"},"economics":{"price_usd":0.01,"price_atomic":"10000","model":"tiered","category_percentile":44,"stability":0,"price_max_usd":1.21,"category_percentile_max":85,"endpoint_count":14,"distinct_price_count":10},"risk":{"level":"clean","flags":[]},"synthesis":null,"traction":{"status":"measured","volume_usd_30d":0.01,"tx_count_30d":1,"unique_buyers_30d":1,"last_settlement_at":"2026-10-08T05:41:51Z","top_buyer_share_30d":1,"top_3_buyers_share_30d":1,"concentrated_volume":false,"trend_7d_vs_30d":0,"shared_payout":false,"shared_with":0,"measured_networks":["eip155:8453"],"first_settlement_at":"2026-09-12T17:18:57Z","volume_usd_all_time":0.02,"tx_count_all_time":2,"median_settlement_usd_30d":0.01,"max_settlement_usd_30d":0.01,"settled_via":["payAI"],"settled_via_detail":[{"id":"payAI","volume_usd_30d":0.01,"tx_count_30d":1}],"shared_with_services":[],"pro_quota_share":1,"caveat":"Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.","all_time_caveat":"All-time is floored at the start of our harvest window, not the service full history."}}},"provenance":{"license":"CC-BY-4.0","attribution_required":true,"attribution":"Data: x402-list.com (CC BY 4.0)","cite_as":"https://x402-list.com/services/salt19-agent-utility-grid","source":"https://x402-list.com"}}