AgentIndex icon
AgentIndex
SchemaPin logo
SchemaPin
★ 16
vs
contrastapi logo
contrastapi
★ 35

SchemaPin vs contrastapi

SchemaPin: SchemaPin enables tool developers to sign schemas and skill folders with ECDSA P-256 keys, and AI agents to verify schema integrity. Public keys are discovered via .well-known/schemapin.json, and Trust-On-First-Use pinning prevents key substitution. It supports key revocation, trust bundles, and multiple languages (Python, JS, Go, Rust).; contrastapi: ContrastAPI is a security intelligence API and MCP server that offers over 35 endpoints covering CVE lookup, domain reconnaissance, IP reputation, threat intelligence, code security scanning, and more. It is free to use with a rate limit of 100 requests per hour and requires no API key for the free tier. The tool is designed for AI agents and integrates seamlessly with platforms like Claude Desktop, Cursor, VS Code, and Windsurf.

01

TL;DR

SchemaPin logo
SchemaPinSecurity & Safety · ★ 16

Signing and verifying tool schemas for AI agents to prevent tampering

Read SchemaPin full review →
contrastapi logo
contrastapiSecurity & Safety · ★ 35

Perform a comprehensive security audit on a domain, including DNS, SSL, and threat intelligence

Read contrastapi full review →
02

Side-by-Side Comparison

Field
SchemaPin logoSchemaPin
contrastapi logocontrastapi
Category
Security & Safety
Security & Safety
Stars
★ 16
★ 35
License
MIT
MIT
Install Command
pip install schemapin
npm install contrastapi
Updated
1w ago
2d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
agent, agents, ai
ai-agents, api, cve
03

Features

SchemaPin logoSchemaPin
01ECDSA P-256 + SHA-256 cryptographic signatures
02.well-known public key discovery (RFC 8615)
03Trust-On-First-Use (TOFU) key pinning
04Key revocation with signed documents and structured reasons
05Multi-language support (Python, JavaScript, Go, Rust)
contrastapi logocontrastapi
01One-call full domain report combining DNS, WHOIS, SSL, subdomains, WAF, and IP reputation
02CVE intelligence enriched with EPSS exploit probability and CISA KEV status
03IP reputation via AbuseIPDB and Shodan with 24-hour cache
04Technology fingerprinting for CMS, frameworks, CDN, and analytics
05Free forever with 100 req/hr, no API key required
04

Use Cases

SchemaPin logoSchemaPin
↳Signing and verifying tool schemas for AI agents to prevent tampering
↳Protecting MCP servers from rug-pull attacks by pinning keys via TOFU
↳Offline or air-gapped verification using trust bundles
contrastapi logocontrastapi
↳Perform a comprehensive security audit on a domain, including DNS, SSL, and threat intelligence
↳Look up CVE details and check if they are actively exploited in the wild
↳Check the reputation of an IP address and enrich it with malware data
FAQ

FAQ

What is the difference between SchemaPin and contrastapi?
Both SchemaPin and contrastapi are in the Security & Safety category. SchemaPin has 16 stars, while contrastapi has 35 stars.
Which is better, SchemaPin or contrastapi?
The best choice depends on your use case. Choose SchemaPin if Signing and verifying tool schemas for AI agents to prevent tampering, and contrastapi if Perform a comprehensive security audit on a domain, including DNS, SSL, and threat intelligence.
Is SchemaPin free or open source?
Yes, SchemaPin is open source on GitHub (MIT).
Is contrastapi free or open source?
Yes, contrastapi is open source on GitHub (MIT).
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Related

Alternatives to SchemaPin →Alternatives to contrastapi →SchemaPin details →contrastapi details →