Code-only MCP servers — agent-tools.cloud

MCP servers that ship as code — a repository or a package you install and run locally (usually over stdio). They have no hosted endpoint, so we cannot probe or grade them: instead each one shows its repository, install command, license, stars and when it was last updated.

Collected from GitHub repositories and npm, PyPI, Cargo, Go, Maven, NuGet and RubyGems packages tagged as MCP servers, the official MCP Registry, Docker's MCP catalog, ModelScope, Baidu MCP World, Cline and other public directories; one entry per repository. A server that also offers a hosted endpoint is listed under Remote instead. These entries are not counted in our reachability, verification or readiness statistics.

mcp-rfc

github.com/mjpitz/mcp-rfc
stale

An MCP server for fetching RFC related information.

Apache-2.0 ★ 20
rfc-ai-tooling

github.com/shbernal/rfc-ai-tooling
active

40x fewer tokens while reading the RFC corpus, with obsoleted specs flagged

MIT ★ 2
rfc-rag

github.com/mirusser/rfc-rag
active

Ask RFCs, get answers: pgvector-powered semantic search with RFC 2119 normative keyword filtering, exposed as MCP tools for any AI agent

Apache-2.0
rfcxml-mcp

github.com/shuji-bonji/rfcxml-mcp
active

A Model Context Protocol (MCP) server for structured understanding of RFC documents.

MIT ★ 4
@shuji-bonji/rfcxml-mcp

github.com/shuji-bonji/rfcxml-mcp
active

MCP server for structured understanding of RFC documents via RFCXML

npm MIT
sap-mcp-server

github.com/romankorim/sap-mcp-server
active

MCP server for SAP ECC and S/4HANA: Claude reads SAP data through OData and RFC/BAPI, writes wait for a person to confirm, every call audited. No SAP NetWeaver RFC SDK needed. Maintained by iteractive.ai.

MIT ★ 5
oak-ci

github.com/goondocks-co/open-agent-kit
updated this year

CLI toolkit for AI-powered development workflows - spec-driven development, RFC/ARC management, and shared conventions across AI coding agents

pypi MIT
internet-standards-mcp

github.com/arhancanli/internet-standards-mcp
active

RFC sections, status, obsoleted-by chains, errata and IANA registries for coding agents.

MIT ★ 1
guniweb-sap-mcp

github.com/guniweb/guniweb-sap-mcp
active

SAP S/4HANA & ECC MCP Server for n8n — OData V2/V4, IDoc, RFC/BAPI. Docs, releases, issues. Free to use: npm i -g guniweb-sap-mcp

npm ISC ★ 3
pkinative-mcp

github.com/nizoka/pkinative-mcp
active

Model Context Protocol (MCP) server for PKI: inspect and verify X.509 certificates, CSRs, CRLs, OCSP responses, CMS SignedData and RFC 3161 timestamps; build and validate certificate chains (RFC 5280 path validation, name and purpose checks, CRL and OCSP

npm MIT
pkinative-mcp

github.com/Nizoka/pkinative-mcp
active

MCP server for PKI on the zero-dependency pkinative engine. Inspect and verify X.509 certificates and chains (RFC 5280), CRL, OCSP, CMS signatures and RFC 3161 timestamps; issue certificates and CSRs; open PKCS#8/#12 without a key byte leaving. 34 tools, no network ever, verified by OpenSSL in CI. For Claude, Cursor, VS Code and any MCP client.

npm MIT
uuid-mcp

github.com/MukundaKatta/uuid-mcp
active

MCP server: generate and validate UUID v4 and v7 (RFC 9562).

MIT
base32-mcp

github.com/MukundaKatta/base32-mcp
active

MCP server: encode and decode RFC 4648 base32 (standard and Crockford).

MIT
csv-mcp

github.com/MukundaKatta/csv-mcp
active

MCP server: parse and stringify CSV (RFC 4180). Header rows, quoting, custom delimiters.

MIT
security-scanner-mcp

github.com/Mateidslx/security-scanner-mcp
active

Autonomous HTTP Security Headers & RFC 9116 Vulnerability Disclosure Auditor MCP Server

MIT
@mukundakatta/csv-mcp

github.com/mukundakatta/csv-mcp
updated this year

MCP server: parse and stringify CSV (RFC 4180). Header rows, quoting, custom delimiters.

npm MIT
weaveverify-mcp

github.com/Slangelange/weaveverify-mcp
active

WeaveVerify MCP Server — RFC-8785 JCS Ed25519 receipt verification, x402 paywall auditing, and Solana Blink / token microstructure inspection.
web3-docs

github.com/dioptx/web3-docs
updated this year

MCP server for Web3 protocol documentation — EIPs, ERCs, BIPs, SIMDs, Cosmos ADRs, Polkadot RFCs, contract registry

MIT ★ 36
verifier

github.com/iecc-protocol/verifier
updated this year

Official TypeScript implementation of the IECC protocol. Features Ed25519 signing, RFC 8785 canonicalization, and AI-native verification via MCP.

MIT ★ 2
@msantagiulianab/x402-mcp-server

github.com/msantagiulianab/solana-enterprise-payment-gateway
active

Zero-bloat Model Context Protocol (MCP) server exposing the RFC 9110 x402 Solana compliance screening gateway to AI agents.

npm MIT
mcp-witness

github.com/edwiniac/mcp-witness
active

🔐 Cryptographic audit trails for AI decisions — hash chains, Merkle trees, RFC 3161 timestamps, compliance presets for HIPAA/GDPR/SOC2

MIT ★ 1
structdiff-mcp

github.com/0xmortuex/structdiff-mcp
active

Semantic diffs of JSON, YAML, TOML, CSV, .env and INI over MCP: keyed list matching with move detection, verified RFC 6902 patches, tolerance, streaming CSV diffs. Read-only.

MIT
ContextHub

github.com/BryceEWatson/ContextHub
updated this year

Deterministic MCP server for coordinating AI agents across software development lifecycles. SQLite graph traversal, Zod validation gates, RFC 6902 patching, and 100+ tests with <200ms p95 latency.
my-websearch

github.com/wtznicy/my-websearch
active

Multi-engine web search MCP server, CLI, and daemon — no API keys required. 16+ engines (Bing, Baidu, DDG, Brave, GitHub, arXiv, etc.), MDN / RFC / DevDocs / Context7 documentation, outline & JSON-LD structured article fetching.

Apache-2.0 ★ 3
nexus-aegis

github.com/codesphere-u/nexus-aegis
active

Proof-Carrying Autonomous Agent Kernel & Cryptographic PR Attestation Engine (RFC 6962 SHA-256 Merkle Proofs + 7-Gate PCAE Pipeline + MCP Server)

MIT ★ 1
protocol-enforcer

github.com/gmhelmold/mcp-statemachine
active

Passive, deterministic MCP server that serves a nested, force-ordered state machine to AI agents — with an RFC 6962 auditable transcript per session. Native binary; this package is the launcher.

npm SEE LICENSE IN LICENSE
agentic-payments
active

Payment authorization for AI agents: Ed25519 spending mandates, multi-agent consensus, RFC 9421 signed payment requests, and an MCP server.

npm (MIT OR Apache-2.0)
sapmcp

github.com/eduardoddddddd/sapmcp
updated this year

Production-minded MCP server for SAP ECC/S/4HANA over NetWeaver RFC SDK (ctypes, no PyRFC): SafetyPolicy, audit JSONL, Basis tools, multi-destination and snapshots.

MIT ★ 1
faultypacket-audit

github.com/FaultyPacket/faultypacket-audit
active

FaultyPacket™ Audit: SPF, DMARC (RFC 9989), DKIM, MTA-STS, DNSSEC, DANE, BIMI and per-provider bulk-sender checks with cited rule IDs. AGPL-3.0.

AGPL-3.0
harish-sewasetu-ai

github.com/12636373/harish-sewasetu-ai
active

SewaSetu AI - Autonomous Agentic Public Welfare & Pension Portal by Harish featuring dual MCP servers, RFC 9728 discovery, OAuth 2.1 privilege segregation, and live persona evaluation framework.

MIT
mcp-server

github.com/origoid/mcp-server
active

Official OrigoID MCP server — CURP, INE, RFC/SAT, IMSS, OFAC/PEPs checks as tools for Claude Code and any MCP-compatible client. Identity verification for Mexico.
ztds-mcp

github.com/moxno/ztds-mcp
active

Zero-Trust Data Sanitization (ZTDS RFC v1.0) reference MCP server for Claude Desktop, Cursor, and Windsurf. In-memory PII de-identification and deterministic surrogate tokenization.

Apache-2.0 ★ 1
web3-docs-mcp

github.com/dioptx/web3-docs
updated this year

MCP server for Web3 protocol documentation — EIPs, ERCs, BIPs, SIMDs, Cosmos ADRs, Polkadot RFCs, Stacks SIPs, Avalanche ACPs, Cardano CIPs, Tezos TZIPs, Sui SIPs, plus a canonical contract registry

pypi MIT
doctrine

github.com/aethrox/doctrine
active

Software engineering discipline grounded in named primary standards (OWASP, ITIL, IETF RFCs, ISO, BABOK, SBAR, and more), shipped as a Claude Code plugin and an MCP server.

MIT ★ 19
Kagami

github.com/mostlygino/Kagami
active

Kagami 鏡 · a native macOS packet and flow viewer on Wireshark's dissectors: live capture, RFC header anatomy, NetFlow/IPFIX and nfdump, follow streams, a CLI and an MCP server.

AGPL-3.0 ★ 1
ar-agents

github.com/ar-agents/ar-agents
active

Open infrastructure for Argentina's sociedades de IA (AI-operated companies, draft General Companies Law art. 14). 36 npm packages, 235 typed tools for the Vercel AI SDK, 6 RFCs, forensic audit log. MIT.

MIT ★ 3
c2pa-mcp

github.com/richardwooding/c2pa-mcp
active

CLI and MCP server for C2PA / Content Credentials provenance: report what a file claims, or fully verify it — COSE signature, certificate chain, hash bindings, RFC 3161 timestamp. Reads JPEG, PNG, WebP, GIF, TIFF/DNG, HEIC, AVIF, SVG, MP4, MOV, AVI, WAV, MP3 and PDF. Wraps github.com/richardwooding/c2pa.

MIT
switchplinth

github.com/bcmyguest/switchplinth
active

Find out why a component exists and what changes if a decision went the other way. Reads the ADRs, RFCs and design notes already in your repo, cites the passage behind every inferred claim, keeps human review on top, and previews option switches on a map. Local-first, Markdown only, MCP tools for agents.

Apache-2.0
SV Number
no update data

Phone numbers for AI agents that hit an SMS verification wall. The agent orders a private number in the country the service expects, reads the verification code straight from the API, and hands the number back. 211 countries and over a thousand services, the widest coverage of any phone API for agents. You do not have to take that on faith: call `list_countries` and count the list yourself. **Tools:** `get_balance`, `list_countries`, `list_services`, `order_number`, `wait_for_code`, `finish_activation`, `cancel_activation`, `request_another_sms`, `totp_code`. The number is exclusive for the whole activation, so nobody else receives its codes. Money is held when you order and charged when the code lands. If nothing arrives, it returns to the balance by itself. No subscription and no per-seat fee. Second factor included: `totp_code` computes the authenticator code locally by RFC 6238, so the secret never leaves the machine. Works with WhatsApp, Telegram, Discord, Instagram, TikTok, ChatGPT, PayPal, Binance, Facebook and a thousand more. The API key is read from the environment. No tool returns it and no error message quotes it.

smithery
knowledge-mcp

github.com/lkarlslund/knowledge-mcp
active

All-in-one binary knowledge MCP provider

MIT ★ 1
sdv_doc_waterloo

github.com/uwe-at-sdv/sdv_doc_waterloo
active

A Python docstring format with emphasis on machine-verifiable normativity

BSD-2-Clause