MCP servers for Codex CLI

USGS Volcano MCP — Volcano Hazards Program HANS-public feed (no auth)

Wikidata MCP — wraps Wikidata API (wikidata.org/w/api.php)

PKI MCP server: inspect, verify, issue, sign X.509, CSR, CRL, OCSP, CMS, TSP, PKCS#12. 34 tools

MCP server and CLI for querying Pokemon Pocket TCG cards with DuckDB

Unofficial read-only MCP server for Greek supermarket price data from PosoKanei.

Send real paper letters in the Czech Republic, ordinary or registered, via Česká pošta.

Context portability MCP server for compressing, formatting, and resuming AI conversation handoffs.

MCP server for searching MCP protocol documentation

Upload any file, get a tracked shareable link. DocSend for AI agents.

Official PUBG API: players, matches, seasons, lifetime and seasonal stats.

Generate 3D assets, quote credits, recover tasks and save model files to a project.

Diagnose RAG drift: interpret scores, recommend thresholds, explain dimensions.

Essential random number generation utilities from the Python standard library

Build, solve, and analyze RASON optimization, simulation, data science, and decision models

Regulated-industry AI compliance: EU AI Act, APRA, NIST AI RMF, ISO 42001, AU AI Safety.

MCP server for live U.S. federal regulations — Federal Register, eCFR, and Regulations.gov

Turn PyTorch into fast CUDA/Triton kernels on real datacenter GPUs with up to 14x speedup.

RIPE Atlas network measurements — ping, traceroute, DNS, TLS, HTTP, NTP, and probes

MCP server for cron expression parsing, validation, and scheduling.

MCP server for computing text diffs, comparing strings, and generating unified diff output.

MCP server for cryptographic hashing — MD5, SHA-1, SHA-256, SHA-384, SHA-512