toolgrep / Auth & identity / AffixIO

Alternatives to AffixIO

AffixIO: Verification software for checking eligibility, membership, access and agent permissions against authorized records or configured sources, with evidence another system can inspect. 8 products similar to AffixIO, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 8 of 8 have an API, 7 of 8 offer an MCP server, 1 of 8 is open source.

• Assertible

  Continuous testing and monitoring for APIs and websites

  Testing & QA free tierAPI

• Verifi

  Human judgment for AI agents

  AI agents & frameworks free tierAPIMCP

• emailvalidation.io

  Free email checker and validator: verify any email address with syntax, MX record and live mailbox checks, validate lists in bulk or use the API.

  Email & messaging free tierAPIMCPSDK

• Auth0

  Secure AI Agent & User Authentication

  Auth & identity free tierAPIMCPSDK

• Signo

  AI agents that watch your DeFi positions 24/7, alert you on Telegram, and prepare next steps for you to review and sign.

  AI agents & frameworks free tierAPIMCPSDK

• CompatLab

  npm compatibility checker for Node.js, Bun and Deno

  Developer productivity free tierAPIMCPopen source

• VibeFix

  An AI agent signs up to your live web app as a brand-new user and reports the problems a first customer would hit.

  Testing & QA free tierAPIMCP

• Agent Nexus

  A machine-readable registry of APIs, MCP servers and CLIs that AI agents call, with live health checks and reliability scores.

  AI agents & frameworks free tierAPIMCP

Side by side

Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.

curl https://toolgrep.com/api/products/affixio/alternatives