"Fetching a URL in programming or web development" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
WHOIS, RDAP, DNS, IP/ASN/CIDR network data and Web3 names (ENS, Unstoppable, SPACE ID, Handshake) in one lookup, with mail-security grading and look-alike domain checks. No API key.
Pre-trade token safety check for AI agents. Simulates a sell before you buy, then returns one low/medium/high/unknown verdict with the signals behind it: sellability, buy/sell tax, liquidity depth, pair age, same-ticker impersonation, owner powers from bytecode. Ethereum, BSC, Base, Solana. Fail-closed - a check that cannot run answers unknown, never low. Publishes its own measured error rate with the benchmark harness in the repo. Free, no signup, no API key, MIT.
Signed, traced record of what an npm package or file attempts when run, network included. No key.
Find relevant evidence. Inspect the sources. Preserve the version your workflow used. Explore all seven Evidence Packs, their included questions and direct free-preview/purchase links: https://varexis.tech/index-packs 1. GitHub + Playwright: Compare repository and browser permissions before connecting an agent to authenticated tools. 2. Notion + Slack: Review workspace access and where content can go before connecting Notion or Slack. 3. Audit & Export Coverage - GitHub, Slack + Cloudflare: Check what a supplier's audit or export claim actually covers before using it in procurement. 4. Next.js Advisory Snapshot: Keep three selected Next.js affected/fixed source assertions and their separately dated enrichment together. 5. Code-Scanner Trust - SonarQube, Snyk & Semgrep: Check scanner permissions and the evidence needed before accepting a clean report or claimed fix. 6. Telemetry Redaction - Coverage, Exceptions & Data Flow: Review where sensitive data can remain or leave a pipeline despite a redaction claim. 7. GitHub Release Acceptance: Check whether approval and execution evidence is bound to the exact artifact being accepted. Complete published packs, sources and limitations are free to inspect and save locally. Public MCP discovery is free, unauthenticated and read-only. These are documentation reviews or selected dated advisory source assertions, not independent tool tests or current safety assessments. Paid value: server-saved retrieval of the selected version. GBP 5 Single Request saves the whole pack; GBP 19 Evidence Receipt also adds an unsigned delivery receipt, plus applicable VAT. Eligible active subscribers retrieve one whole pack using one query without another checkout. No continual refresh or permanent-retention promise. Connect: https://varexis.tech/index-connect Purchase or retrieve: https://varexis.tech/index-access Hosted Stripe and compatible authorised MPP/Stripe SPT purchases use separate authenticated paths. Agents need owner spending authority for the exact VAT-inclusive quote and required provider authentication. Not every agent or wallet is supported. Use saved results or active entitlements before buying. Recover uncertain delivery with the original purchasing path, access key and payment credential; do not buy again. Payment adds no fresh investigation, certification, independent assurance or deployment approval.
Block an action a signed mandate does not permit: amount, payee, audience, currency, window, intent.
Block an action that a signed mandate does not permit, at the moment the action happens. Checks amount, payee, audience, currency, window and intent in fixed order; 100 checks a day free, then 0.005 USDC per call over x402 on Base mainnet.
Check an agent's INAM reputation before trusting it, and sign a receipt when work is done.
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
Scans untrusted web pages, emails, or tool outputs for prompt injections and returns sanitized tex
Pay-per-call agent tools: PDF, OCR, translation, news search, prediction markets, web, chain reads.
AskYourStack connects Claude to your Linux server and to Google Search Console over MCP. On a server, a small open-source agent (Apache-2.0, reproducible builds) dials out to AskYourStack; no SSH key or password is stored. Claude can then set up a raw VPS, install Magento or WordPress, read logs and fix errors, take backups and snapshots, harden the server, scan for malware and move a site to a new server. It runs as the Linux user who owns the sites by default, or as root when the user chooses
Scan a site or AI-built app for exposed databases, keys and MCP endpoints, then verify the fixes.
KYA backed by a real company: e-CNPJ-signed agent mandates, revocation-checked, signed verdicts
Runs an eight-stage isolation test against your staging Supabase and issues a signed attestation. Needs a RowAttest API key: Authorization: Bearer rak_... (create one on the API keys page in the app).
Send documents for legally valid e-signature in Brazil, track signers and download signed files.
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.
Kanban tasks and project notes for AI clients, with OAuth and per-project read or write grants.
Review supplied evidence of actor identity, principal authorization, tool scope and intended action before an agent acts. Returns missing evidence and review guidance; enforcement belongs to the caller integration. Two MCP-native free trial attempts per network for the campaign, shared daily capacity. No action authorization or identity certification.
Scan a website's HTTP security headers (HSTS, CSP, framing, COOP/CORP, cookies). Score + fixes.
Free SSL/TLS certificate checker: expiry, chain trust, hostname match, TLS version, A/B/C/F grade.
