"Desktop software without licensing requirements" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Let your AI agent pay for APIs and data without handing it your money. In ChatGPT, Claude or Grok, the agent finds paid x402 APIs (with each seller's payout record from x402 Doctor) and asks to pay; you approve and sign each payment in your own wallet: MetaMask or Coinbase Wallet (USDC on Base), Phantom (USDC on Solana) or Xaman (RLUSD on the XRP Ledger). Fizzl checks every payment before you sign and every paid answer for hidden instructions. Fizzl never holds your keys. Free to start.
VAREXIS-INDEX — Source-Linked Evidence & Verification Tools for AI Agents VAREXIS-INDEX provides free, source-linked evidence for agent decisions through twelve focused guides and three distinct read-only MCP connectors. The original `/mcp` connector covers the approved search and preview population. The companion `/mcp/catalogue` provides deterministic access to 724 additional records by category and exact identifier. Configure both through the existing quickstart: https://varexis.tech/index-connect#quickstart Four optional one-time local checkers analyse supported customer-supplied declarations: Tool Admission £49, Audit Coverage £79, Data Exit £79 and Transaction Integrity £149, excluding VAT. These products do not independently inspect live systems, enforce permissions, establish payment settlement, verify deletion or certify compliance. Twelve free decision guides: https://varexis.tech/index-packs#free-decision-guides Read-only agent enquiry navigation (12 guides, 129 referenced records): https://varexis.tech/varexis-index/agent-entry.json Select a candidate guide, then follow the exact connector tool and identifier in the canonical manifest. Navigation does not establish applicability, a customer outcome or authority to act. Evaluate agent permissions, delegated authority, audit provenance, payment integrity, data retention and software supply-chain evidence before relying on documented claims. **FREE MCP CONNECTOR** Endpoint: https://varexis.tech/mcp Connect using Streamable HTTP. No authentication is required for public evidence discovery. Four free, read-only tools: - find_evidence_questions — Find existing reviewed evidence questions and matching routes. - preview_evidence_answer — Retrieve complete supported public answers, sources, limitations and snapshot hashes. - find_package_advisories — Find source-bound software advisory records. - get_index_access_options — Discover available services, pricing, licensing and purchasing requirements. Public MCP cannot execute actions, inspect private systems or authorise deployment. Developer quickstart: https://varexis.tech/index-connect **LICENSED VERIFICATION TOOLS** Four separately licensed, reusable local executables: **1. Agent Tool Admission & Permission Control — £49** Compare declared tool actions, resources, recipients and permissions across supported GitHub, Playwright, Notion and Slack integrations. Identify authority conflicts, missing verification and permission changes before human review. **2. Agent Audit & Evidence Coverage — £79** Reconcile declared identities, authorisations, actions and outcomes. Identify missing audit events, inconsistent references and unresolved export, retention or recovery evidence. **3. Agent Data Exit & Retention Reconciler — £79** Compare declared data inventories, exports, deletions, retention conditions and residual copies. Identify missing evidence and unresolved data-custody conditions during migrations and offboarding. **4. Agent Transaction Integrity & Replay Analyzer — £149** Reconcile declared spending authority, amended transaction terms, scoped idempotency keys, retries and reported outcomes. Identify conflicting purchase attempts and unresolved payment or entitlement evidence. All four products are separately licensed for reusable internal execution. Prices are one-time, exclude applicable VAT and do not include subscriptions, hosting or future updates. Checkers analyse supplied declarations locally. They do not independently inspect production systems, execute payments, enforce permissions, certify compliance or establish financial settlement. Explore all products, representative findings and free previews: https://varexis.tech/index-packs **FREE EVIDENCE PACKS** Seven complete public evidence packs cover: - GitHub and Playwright permission boundaries. - Notion and Slack access and data handling. - Audit and export evidence coverage. - Next.js advisory source assertions. - SonarQube, Snyk and Semgrep scanner trust. - Telemetry redaction and exception handling. - GitHub release approval and artifact identity. Source reviews include documented versions, provenance, exclusions and reliance boundaries. They are not independent deployment tests or current security certifications. 724 additional reviewed records are publicly available through exact-ID HTTP catalogue links and the separate read-only https://varexis.tech/mcp/catalogue connector. They remain outside the original MCP search and preview population and paid saved retrieval. Enhanced natural-language search for these additions remains on HOLD. Public catalogue: https://varexis.tech/varexis-index.json **SAVED EVIDENCE & SUBSCRIPTIONS** - Single Request: £5 — Save a version-bound published evidence result or obtain the eligible original Agent Tool Evaluation & Integration Kit. - Evidence Receipt: £19 — Add an unsigned delivery receipt to the eligible saved result. - Research: £29/month. - Developer/API: £149/month. Prices exclude applicable VAT. Subscription eligibility, rate limits and exclusions apply. The four separately licensed verification executables are not included in these existing evidence or subscription offers. **AGENT PURCHASING & RECOVERY** VAREXIS supports hosted Stripe checkout and compatible authorised MPP/Stripe Shared Payment Token purchasing through separate payment interfaces. Agent purchases require owner spending authority for the exact VAT-inclusive quote and any necessary provider authentication. Not every agent or wallet is supported. Public MCP remains free and read-only. Payment credentials and private customer data must not be submitted to the public connector. Existing purchases should be retrieved using the original credential. Uncertain payments must be investigated and recovered through supported procedures, not automatically purchased again. Purchase or recover: https://varexis.tech/index-access Agent payment contract: https://varexis.tech/varexis-index/agent-payments.json **WHY VAREXIS?** VAREXIS combines source-linked evidence, explicit limitations, versioned deliverables and structured verification of supplied declarations. Its purpose is to help agents and developers distinguish what available evidence actually establishes from what remains uncertain, unsupported or outside authority. Free evidence discovery. Transparent product scope. Reusable local verification. Bounded reliance. Website: https://varexis.tech Developer integration: https://varexis.tech/index-connect MCP endpoint: https://varexis.tech/mcp Additional optional connector: https://varexis.tech/mcp/guidance/v1. Configure it explicitly for get_decision_guide (exact published guide IDs) and check_tool_admission_fit (bounded, source-bound declaration-review suitability). Tool schemas and setup: https://varexis.tech/varexis-index/guidance-mcp-v1.json and https://varexis.tech/index-connect#bounded-guidance. The original /mcp four-tool connector and /mcp/catalogue two-tool connector remain distinct and unchanged. The additional tools are free and read-only; they do not execute actions, verify live permissions, grant entitlements or purchase anything. Missing or unbound applicability returns evidence-required. The existing Tool Admission price and licence remain unchanged.
CVE with EPSS and CISA KEV, package risk, software EOL, domain and IP reports, pay per call
Check without an account whether ProofSnap issued an evidence package, by the SHA-256 of its manifest.json. No sign-in needed.
Key-value memory without an account, UUID, hash, JWT, JSON validation, time and random
Manage software license keys: issue, suspend and revoke licenses, free machines, see customers.
Software vulnerabilities (CVEs) from the US NVD and package downloads for npm, PyPI and crates
Package versions, licences and known vulnerabilities for npm, PyPI, crates, Go, Maven, NuGet
Evaluate x402 V2 HTTP payment requirements against explicit recipient, asset, network and amount policies, with requested-resource binding checks. Returns pay, review or do_not_pay with explanations. Public offline tools require no account, wallet or API key. Does not sign, send payments or verify on-chain settlement. Documentation: https://settlens.com/mcp — Reproducible examples: https://settlens.com/blog/check-x402-payment-policy
Verify an artifact an AI agent produced — schema, emptiness, provenance and mandate authority — before you accept the work or pay for it. Ed25519-signed and verifiable without this service; 20 checks a day free, then 0.005 USDC per call over x402.
AffixIO lets AI agents generate and verify zero-knowledge proofs with post-quantum ML-DSA-65 attestations, single-use proof IDs and agent trust checks, without exposing personal data.
Domain security reconnaissance tools for AI agents via Model Context Protocol. 13 security tools — DNS, SSL, HTTP headers, email auth, port scan, propagation, reverse DNS, ASN/BGP, RDAP/WHOIS, subnet calc, and comprehensive security scan — callable from Claude Desktop and any MCP-compatible AI agent. Part of DechoNet. Every tool here is also a free web tool at dechonet.com — no sign-up, no API key — backed by error-fix guides. This package brings the same checks to AI agents.
Clerk is an authentication and user management platform. Its MCP server lets coding agents set up and manage Clerk without leaving the editor. Agents can pull SDK snippets, quickstarts, and Clerk’s agent skills. They can also create apps, update instance settings, and manage users and organizations. To go live, they can create a production instance and check its domain. Sign in with any Clerk account, including a free one. Secret keys are never returned in plain text.
EOL dates, risk scores, CISA KEV exposure, SBOM audits and edge-device EOS for 700+ products.
Known security incidents in developer software, with reviewed fix procedures.
Agent-native video API: sessions, keys and media checks. Tool list works without auth.
Sigstore Rekor — the public transparency log for software signatures.
Compare AI governance, risk and compliance software.
Actively exploited? End of life? Which version fixes it? CVE verdicts for server software.
Free catalogue; paid historical software/security evidence. No current-risk assessment.
Bounded software search, unknown requirements, and the origins of project identifiers.
Scoped login vault: your bot signs in to sites without ever seeing the password.
Magento Open Source, Adobe Commerce and Mage-OS releases, EOL, requirements, CVEs and patches
Persistent agent identity, private memory, return proof, and city-door tools for agents entering GRITH. Public, read-only discovery is available without credentials.
Zero-knowledge proof generation MCP server. AI agents can prove identity claims (Coinbase KYC, Country, Google OIDC, Google Workspace, Microsoft 365) without revealing personal data.
Approve Nostr signatures with your own browser signer without exposing a private key.
Encrypted store for API keys and database URLs your code needs. Use them without reading them.
Software for your AI: company files, spreadsheets and rules, with per-person access and history.
Prove a hidden value reached a threshold without revealing the value.
Safeguard's remote MCP server for software supply chain security. Query SBOMs, vulnerabilities, packages, licenses, findings and compliance data, generate remediation plans and work with policy gates. Requires a Safeguard account (OAuth sign-in). Listed in the official MCP Registry as sh.safeguard/safeguard.
Secure API key proxy for AI agents. Store keys once, route API calls through a proxy — agents use your keys without seeing them. Supports 30+ providers including OpenAI, Anthropic, and Stripe.
Secure every MCP server with one governed gateway. Give each AI agent its own scoped MCP access, contain credentials at the gateway, and audit every MCP tool call without wiring agents directly to each server.
Managed MCP gateway for PostgreSQL. Connect Cursor, Claude Desktop, VS Code, and Windsurf to your database with per-table permissions, encrypted credentials, and a full query audit trail. OAuth 2.0 authentication, free tier available.
Access-posture reports for agent data sourcing: robots, bot wall, licensing. Paid per call via x402.
Let AI operate servers without SSH. Choose actions, approve risky changes, and audit every step.
Shared team memory for AI assistants. Private by default; teammates see only what you choose.
Read endpoints, missing updates, CVE vulnerabilities, installed software and reports in Action1.
Installed software, vulnerabilities and end-of-life components across your servers, apps and repos
Your own computer's files from ChatGPT or Claude: folder rules, confirmations and undo.
Actera is a guardrail layer for AI agents: each action an agent tries to take is checked against your policies and allowed, sent for approval, or blocked before it runs. From Claude, review what your agents did, see what is waiting for approval, and draft, test and publish policies. OAuth sign-in; works with claude.ai, Claude Desktop and Claude Code.
