How do I install the Dropclaw Store skill?

Run npx skillmds@latest add modbender/dropclaw-store in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Dropclaw Store safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: makes network calls, reads secrets. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Dropclaw Store?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Dropclaw Store free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Dropclaw Store?

modbender (@modbender) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Dropclaw Store by modbender — Agent Skill

Name: Dropclaw Store
Rating: 4.666666666666667 (3 reviews)
Author: modbender

File contents

DropClaw Store — Permanent Encrypted File Storage

Store any file permanently on-chain using AES-256-GCM client-side encryption and the x402 payment protocol. Zero-knowledge: the server never sees your encryption key.

Quick Reference

API Base: https://dropclaw.cloud
Protocol: x402 (HTTP 402 payment flow)
Storage chain: Monad (chainId 143)
Payment: MON, SOL, or Base USDC
Cost: ~$30 USD + gas to store. Free to retrieve.

How to Store a File

Read the file into a buffer
Compute SHA-256 hash of the original
Compress with zlib deflate
Generate random 32-byte AES key + 12-byte IV
Encrypt with AES-256-GCM → output: [IV:12][AuthTag:16][Ciphertext]
POST /vault/store with the encrypted blob as multipart form data (field: file)
You will get a 402 response with payment options — pick a chain and send payment
Retry the POST with header X-PAYMENT: base64(JSON({ network, txHash }))
CRITICAL: Save BOTH the returned skill file AND your encryption key locally

How to Retrieve a File

POST /vault/retrieve/{fileId} with the skill file JSON in the body
Receive encrypted blob
Extract IV (first 12 bytes), AuthTag (next 16 bytes), then ciphertext
Decrypt with AES-256-GCM using your saved key
Decompress with zlib inflate
Verify SHA-256 matches

Endpoints

Method	Path	Auth	Description
POST	`/vault/store`	x402	Store encrypted file
POST	`/vault/retrieve/{fileId}`	none	Retrieve encrypted file
GET	`/vault/pricing?size={bytes}`	none	Get pricing for file size
GET	`/.well-known/x402`	none	x402 discovery manifest
GET	`/dropclaw-skill.json`	none	Full skill spec (JSON)
GET	`/claude-tools.json`	none	Claude tool definitions
GET	`/openai-tools.json`	none	OpenAI tool definitions

MCP Server

For Claude Desktop / Claude Code integration:

claude mcp add dropclaw -- node /path/to/mcp/index.js

Install SDK: npm i dropclaw or pip install dropclaw

Payment Chains

Monad (eip155:143) — MON native
Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp) — SOL native
Base (eip155:8453) — USDC

Important

The encryption key is generated client-side and NEVER sent to the server
Without your key, files cannot be decrypted by anyone
50% of all fees go to FARNS token buyback

---name: dropclaw-storedescription: Store and retrieve encrypted files permanently on Monad blockchain via DropClaw x402 gateway--- # DropClaw Store — Permanent Encrypted File Storage Store any file permanently on-chain using AES-256-GCM client-side encryption and the x402 payment protocol. Zero-knowledge: the server never sees your encryption key. ## Quick Reference - **API Base**: `https://dropclaw.cloud` - **Protocol**: x402 (HTTP 402 payment flow) - **Storage chain**: Monad (chainId 143) - **Payment**: MON, SOL, or Base USDC - **Cost**: ~$30 USD + gas to store. Free to retrieve. ## How to Store a File 1. Read the file into a buffer 2. Compute SHA-256 hash of the original 3. Compress with zlib deflate 4. Generate random 32-byte AES key + 12-byte IV 5. Encrypt with AES-256-GCM → output: `[IV:12][AuthTag:16][Ciphertext]` 6. `POST /vault/store` with the encrypted blob as multipart form data (field: `file`) 7. You will get a `402` response with payment options — pick a chain and send payment 8. Retry the POST with header `X-PAYMENT: base64(JSON({ network, txHash }))` 9. **CRITICAL**: Save BOTH the returned skill file AND your encryption key locally ## How to Retrieve a File 1. `POST /vault/retrieve/{fileId}` with the skill file JSON in the body 2. Receive encrypted blob 3. Extract IV (first 12 bytes), AuthTag (next 16 bytes), then ciphertext 4. Decrypt with AES-256-GCM using your saved key 5. Decompress with zlib inflate 6. Verify SHA-256 matches ## Endpoints | Method | Path | Auth | Description | |--------|------|------|-------------| | POST | `/vault/store` | x402 | Store encrypted file | | POST | `/vault/retrieve/{fileId}` | none | Retrieve encrypted file | | GET | `/vault/pricing?size={bytes}` | none | Get pricing for file size | | GET | `/.well-known/x402` | none | x402 discovery manifest | | GET | `/dropclaw-skill.json` | none | Full skill spec (JSON) | | GET | `/claude-tools.json` | none | Claude tool definitions | | GET | `/openai-tools.json` | none | OpenAI tool definitions | ## MCP Server For Claude Desktop / Claude Code integration: ``` claude mcp add dropclaw -- node /path/to/mcp/index.js ``` Install SDK: `npm i dropclaw` or `pip install dropclaw` ## Payment Chains - **Monad** (eip155:143) — MON native - **Solana** (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp) — SOL native - **Base** (eip155:8453) — USDC ## Important - The encryption key is generated client-side and NEVER sent to the server - Without your key, files cannot be decrypted by anyone - 50% of all fees go to FARNS token buyback

Frequently asked questions

Dropclaw Store