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Code & developer tools
2,999 listings from 2,363 providers, 1,422 answering · counted
Filed by addrbook from the words in each listing, so a heading says what a listing claims to be for.
Showing 601–625, one row per provider, those answering first · names and descriptions as their source publishes them
- x402-v2-mint-crates-io-lookup.vercel.app/v1/crates-io-lookupx402-v2-mint-crates-io-lookup.vercel.appcrates.io crate metadata / search (keyless). POST {crate} and/or {query,per_page?}. Miss → 404 not charged.Livechecked Evidence 1/4x402x402 Bazaar1 payer1 more from x402-v2-mint-crates-io-lookup.vercel.app
- x402-v2-mint-packagist-package.vercel.app/v1/packagist-packagex402-v2-mint-packagist-package.vercel.appComposer/Packagist package metadata p2 (keyless). POST {vendor}/{package}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. PHP package registry lane (≠ npm/pypi/crates).Livechecked Evidence 1/4x402x402 Bazaar1 payer
- x402-domain-check.vercel.app/codes/hcpcsx402-domain-check.vercel.appHCPCS Level II code search (supplies, DME, drugs, ambulance, etc.) by words or code: short and long descriptions, obsolete / not-otherwise-classified flags, add and termination dates. CPT (Level I) is AMA-copyrighted and not included. Data: CMS via NLM Clinical Tables. Not charged on errors.Livechecked Evidence 1/4x402x402 Bazaar1 payer1 more from x402-domain-check.vercel.app
- ledatic.org/x402/rail-verified-pairs-v2-look-insideledatic.orgLook inside Rail Verified-Pairs v2 for 1 USDC: the public 200-pair sample (37,173 bytes JSONL) delivered through the paid path with a signed Ed25519 receipt (verifiable offline against /x402/key). The full file, 52,243 compiler-verified Rail pairs (805,232 bytes tar.gz), is the same flow at https://ledatic.org/x402/rail-verified-pairs-v2 for 199 USDC.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- Degenscan Intelintel.degenscan.ioAI tool adoption: weekly downloads on npm and PyPI with week-over-week change and GitHub stars for AI SDKs and frameworks (OpenAI, Anthropic, Google, LangChain, LangGraph, LlamaIndex, CrewAI, AutoGen, MCP, vLLM, vector DBs, x402). Market data only — not investment advice.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- agent-utils-x402-production.revenue-agent-jw.workers.dev/v1/x402/checkagent-utils-x402-production.revenue-agent-jw.workers.devx402 endpoint validator and payment-readiness checker, useful for sellers debugging a paywall or buyers vetting an endpoint before paying. Fetches the URL unpaid, decodes the 402 challenge and grades network, USDC asset, payTo, price vs facilitator fees, EIP-712 domain, CORS and Bazaar metadata. Returns a 0-100 score and a fix list. Never pays the target. Errors: 400 JSON {error} for invalid input.Livechecked Evidence 1/4x402x402 Bazaar1 payer1 more from revenue-agent-jw.workers.dev
- x402 Agent Hubx402-agent-hub.x402-agent-hub.workers.devProfessional profile of a notable person (founders, executives, public figures) from Wikidata and Wikipedia: description, occupations, current employers and positions, education, citizenship, birth year, website and public X/LinkedIn/GitHub accounts. No family, residence or full birth dates are returned. You only pay for successful reads: invalid input, not-found and upstream errors cancel settlement.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- Foundryminty-sprout.onrender.comPyPI package info: latest version, license, Python requirement and recent downloads. Input: a package name.Livechecked Evidence 1/4x402x402 Bazaar1 payer2 more from minty-sprout.onrender.com
- CF Package Checkcf-package-check.cf-exclusion-check.workers.devIs this WordPress plugin, npm package or PyPI project abandoned? Status, 0-100 abandonment-risk score, months since last update, and the signals behind it.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- NovaPathinstructional-decision-engine-x402.vercel.appQuery current OSV advisories for an exact npm, PyPI or Go package version, then return a bounded AI explanation with source-matched evidence and advisory IDs. No-match means no source match, never a safety guarantee. Supports up to ten matching advisories per request; no exploit execution.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- PreFlight Checkerx402-api-catalog.onrender.comnpm package trust check / risk score / security audit: registry age, weekly downloads, GitHub org/stars, OSV.dev vulnerabilities, typosquat detection.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- relay.imagiolabs.com/code-shiprelay.imagiolabs.comCode ship: paid repo-fix intake to our human-gated review pipeline.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- HS Tariff Code & Customs Dutyapi.boscolabs.devHS tariff code and customs duty lookup: US HTS and UK tariff, MFN and preferential rates, UK VAT; or describe a product and get 5 candidate codes. USITC and HMRC data. Typical call $0.005: $0.005 per code lookup or search, min $0.005. upto: pay only for delivered rows; exact: pays the quote. Nothing is settled on an error or empty result. By Bosco Labs: official sources, source link per row.Livechecked Evidence 1/4x402x402 Bazaar1 payer1 more from boscolabs.dev
- BRAINIAC.softwarewww.brainiac.softwareReturn project activity indicators, repository associations, package metadata and available security information using Google deps.dev API.Livechecked Evidence 1/4x402x402 Bazaar1 payer1 more from brainiac.software
- Crypto & Web Data API for Agentsapi.agent-data.workers.devENS resolution: name.eth -> address, or address -> verified primary name, plus avatar, url, X/Twitter, GitHub and other profile records.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- nightshift-x402.nightshift-labs.workers.dev/v1/ens/resolvenightshift-x402.nightshift-labs.workers.devResolve ENS and Basenames (name.eth, name.base.eth): name → address, or address → primary name with forward verification, plus text records (avatar, description, url, twitter, github, email).Livechecked Evidence 1/4x402x402 Bazaar1 payer
- Explain Codeapi.24klabs.aiClear explanation of what code does, how it works, and why.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- Synap by Linkrrasynap402.comSynap by Linkrra - code review: send a unified diff or source code, get a summary and a JSON list of issues (severity, file, line, message, suggestion) - bugs, security, edge cases, no style nits. Invalid model output = no charge. Open models on dedicated GPUs. Pay per call in USDC on any network in the payment challenge; no account, no API key.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- tetheredtrust.com/v1/paid/launchtetheredtrust.comIs this MCP server findable by agents? Checks it works, then looks it up in the official MCP Registry (and whether the listed version is current), Glama, PulseMCP, the x402 Bazaar, npm and PyPI, plus its server card, llms.txt and robots.txt. Score, ordered fix plan and a ready-to-publish server.json. $0.25 per call. Not charged for errors or "need more detail" answers.Livechecked Evidence 1/4x402x402 Bazaar1 payer1 more from tetheredtrust.com
- Base Codewww.x402financialdata.comContract-or-wallet check for a Base address, with deployed code size and a code prefix -- one eth_getCode call. $0.005/call.Livechecked Evidence 1/4x402x402 Bazaar1 payer1 more from x402financialdata.com
- horizonpulse.dev/api/vuln/checkhorizonpulse.devCVE/package lookup: NVD CVSS, KEV status, GHSA ranges. USDC on Base or Polygon. Sources: NVD API, CISA KEV (CC0), GitHub Advisory Database (CC BY 4.0, https://github.com/advisories). This product uses the NVD API but is not endorsed or certified by the NVD. Not affiliated with or endorsed by NIST, CISA, DHS or GitHub. Not financial, investment, tax, legal or health advice. Quotes about tokens, securities or other financial products are not a recommendation to buy, sell or hold anything.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- Maxwell x402api.maxwellinternational.ainpm package card from the official registry: latest or a given version, description, license, maintainers, keywords, repository, dependencies count and publish dates. Required: name; optional: version. Cached.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- Dependency Vulnerability Scanapi.edifiedlab.comScan pinned PyPI name==version lines in the JSON manifest field against a live advisory API (always-fresh, per-request; no local snapshot). Each billed body includes as_of (scan time) and a live-API provenance source. Lockfiles and package-lock.json are follow-on.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- x402.nz1labs.com/v1/queryx402.nz1labs.comScan an npm, PyPI, RubyGems, Go, Maven, crates.io or Packagist package version for known vulnerabilities (OSV database). Returns CVE/GHSA ids, CVSS vectors, summaries and fixed versions.Livechecked Evidence 1/4x402x402 Bazaar1 payer
- AgentFeedx402.ochinimus.appPackage check: flagged (any OSV advisory for that exact version), highest severity, advisories, release, scripts, downloads, name-squat flags. Use when you need to answer: Does OSV.dev list any advisory for this exact version of an npm or PyPI package, and what do the public registries add? 404 or 503: not charged.Livechecked Evidence 1/4x402x402 Bazaar1 payer