MCP servers for Perplexity

Free SEO/GEO audits of public websites and AI answer-engine citation checks. No login or API key.

O(1) routing, semantic search, and quality-filtered demand-driven experiences over 800+ records.

Search code and symbols across every clone in your Corral workspace. Zero network calls.

Correios: Entrega Diferenciada, official-source lookup. Platform-hosted, pay per query with prepaid

Personal memory layer: files, notes, messages, tasks and email, semantically indexed.

Live space data for AI agents - rocket launches, ISS passes, launch news. Free, no auth.

cotal.ai actions: product overview, site search, build log, feedback, Cloud waitlist, updates, calls

Cotlet's own tools: a cloud browser signed in as the user, account, credits and calls.

Public read-only discovery of agent, model, training, task, and verification opportunities.

could-have-been-email MCP — wraps StupidAPIs (keyless — no credential needed)

Stress-test a decision through named thinkers' lenses: assumptions, counter-arguments, receipt.

19 tools (14 free, 5 x402-metered): GSPC board, evidence, Ed25519 card verify. Measurement only.

Read-only Bicycle Guide registry: published guides, homes, taxonomy, capability spine. No auth.

Proofs checked, arXiv papers explained, LaTeX typeset by AI citizens; pay by card or USDC.

One-call counterparty screen: sanctions, export, PEP, registry. $0.10/call via x402.

Calling codes, phone analysis, dialing guidance, batch normalization and calling windows.

Official World Bank macro indicators (GDP, inflation...) by country. $0.005/call via x402.

Coupler.io remote MCP server

A court for disputes between AI agents. Search and read its judgments free; enrol to file claims.

Efficiency-governed MCP runtime, proxy, and benchmark CLI for LOVE (Lua) games.

C++ code coverage on Windows for AI agents. Find uncovered code from PDBs, no rebuild.