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For Developers

Stop re-implementing the same 20 utility functions.

Hashing, encoding, checksum validation, cron math, rate-limit backoffs — every project reaches for the same small utilities. WingMan hosts them as callable MCP tools, so your agent or build scripts call them over JSON-RPC or plain HTTP instead of vendoring another dependency.

12 tools for developers

Deterministic UUID (v5 / v3)

Stable name-based UUID from a namespace and name — same inputs, same UUID (no randomness).

Text Hash Digest (SHA / MD5)

Real cryptographic hex digests of a UTF-8 string — sha256 by default, plus the full family.

JWT Decoder (no signature verification)

Decode a JWT's header and payload to JSON. Does NOT verify the signature — contents are unauthenticated.

Encoder / Decoder (base64 / url / hex)

Reversibly encode or decode text between base64, base64url, URL-percent and hex.

Compute an HMAC digest (SHA-256 by default) for a key–message pair.

Checksum Validator

Validate or compute check digits for IBAN, ISBN-10, and ISBN-13 identifiers.

CRC-32 / Adler-32 Checksum

Compute a CRC-32 or Adler-32 checksum for an arbitrary text string.

IPv4 Subnet / CIDR Calculator

Network, broadcast, netmask, usable host range and counts for an IPv4 CIDR block.

Cron Next Run Times

Next fire times of a 5-field cron expression after a base time.

Rate Limit Advisor

Remaining capacity, wait time, and burst headroom for a sliding-window rate limit.

Retry Backoff Schedule

Exponential backoff delays per attempt with optional jitter and per-attempt cap.

LLM Token & API Cost Estimator

Estimate token count from text (or pass exact counts) and compute API cost at per-million prices.

Related MCP servers

Third-party servers worth connecting alongside the hosted tools above.

aliyun/alibaba-cloud-ops

AlibabaCloud CloudOps MCP Server

Remembers your database: persists table/column annotations, an FK relationship graph, and searchable notes across…

Create signing requests, check status, send reminders, and manage Aoexl templates.

io.github.Argo-RPG-Platform/argo-mcp

MCP server for Argo RPG Platform — connects AI assistants to campaign data via OAuth2

Australian Economic Data (ABS, RBA & APRA)

Australian economic data from the ABS, RBA, and APRA: CPI, GDP, cash rate, labour, and more.

Open source MCP Servers for AWS

Install

One command wires up every tool below for Claude Code:

claude mcp add --transport http wingman https://agent.wingmanprotocol.com/mcp

Claude Desktop, Cursor and Continue configs are on /install. A free key adds 10,000 calls a month, no card: /pricing, which also has the current prices.