"An email management MCP server" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
Danish company data from CVR: owners, management, accounts, credit risk, court cases, bankruptcies.
Serverless 15-tool B2B email deliverability, domain security, OpenAPI breaking-change release gate, LLMO /llms.txt auditor, and quantitative trading risk MCP connector.
Contract-change authorization for AI agents: preflight a change to an API or MCP contract, get a signed decision, and verify the receipt offline. Only a granted change can proceed.
Find and live-check the paid x402 API for an agent task, ranked by real 30-day payers and price.
Simceptor is an AI-native Mock API simulation platform with a built-in MCP server. It enables AI agents to create, inspect, update, and test dynamic mock APIs, conditional response rules, stateful session simulations, and network latency directly from context.
Free *.pntr.dev dev subdomains — register subdomains, manage DNS and wildcard records, receive email on disposable inboxes, and capture HTTP requests for webhook debugging. OAuth sign-in; free tier.
GXEON services, prepaid packs from R$0.99, purchase planning, and agent buyer guidance.
Web/PDF extraction and API comparison. x402 payments or prepaid comparison credit. Free discovery.
Point Gecko at an OpenAPI spec; get first-call-correct, auth-hidden agent tools.
AI product-copy samples and EUR 9 packs; free integration diagnosis and EUR 5 evidence reports.
Hosted MCP infrastructure with seven typed tools: JSON repair, JSON Schema validation, JSON to TypeScript, CSV to JSON, JSON to CSV, OpenAPI security and webhook checks. Public tool discovery; execution uses scoped Bearer keys with tool allowlists, quotas and request IDs. Free deterministic calls, no LLM calls or USDC payments. Runnable repair → validate → CSV example: https://invokeport.com/agents/workflows/json-pipeline. MCP through 2025-11-25; custom headers, no OAuth.
Research, inference, data/web/email tools, and x402 conformance, service catalog and grade feeds.
Surface contracts: API behavior evidence, x402 pre-payment check, MCP server preflight
What is known to be broken in an MCP server or API operation, with the check that found it.
Manage Pipefork API projects, drafts, connections, secrets, and deployments through MCP.
Signed deterministic checks for supplied JSON invoices, OpenAPI API contracts and JSON events.
Free MCP, API auth, webhook and schema diagnostics with bounded checks and safe quote routing.
Diagnoses whether an MCP server is reachable, by live HTTP probe.
Check whether an MCP server answers, what its tools claim, and whether that claim has changed.
Ephemeral mailboxes and a mock OAuth IdP for testing email and auth flows — 39 API-driven tools covering mailboxes, mails, attachments, domains, teams, and mock identities.
Regex matching, email/URL format validation, and JSON Schema validation.
Verify an agent's advertised route, price, payment details, and schemas against its live endpoint.
Whether an HTTP status is retryable
Whether a token is an HTTP method
An MCP server that provides tools to validate an email address using Dilli Email Validation API.
Webhook, email, WebSocket and tunnel testing for AI agents: capture, wait, verify, replay.
ship-on-friday MCP — wraps StupidAPIs (keyless — no credential needed)
AI-operated. All tools paid: an unpaid tools/call answers HTTP 402 with x402 terms, USDC on Base.
