DCP (Delegated Custody Protocol)

Name: DCP (Delegated Custody Protocol)
Author: 1ly.store

A free, open-source desktop app and MCP permission server that keeps Solana wallet keys, API credentials, identity details and private data in a local encrypted vault and lets each AI agent use them only within per-agent rules, spending caps and approvals.

Agents can sign, pay or call an API without ever reading the raw key from a .env file, and anything over a limit waits for your approval on desktop, Telegram or phone.

Open sourceFree tierCommercial OK

Open dcpagent.com ↗ agent.md

For your project

Official API: No official API Public relay at relay.dcpagent.com: 60 requests/minute per vault
Data download: Not stated
Price: Free tier Fully free: desktop app, agent runtime, CLI and source are free and open source (Apache-2.0)
“The core is free and open source (Apache-2.0). Desktop app, agent runtime, CLI, and source code are all free.” dcpagent.com/
Open source: 1lystore/dcp
License: Apache License 2.0 plus DCP Terms of Service The DCP software (desktop app, agent, CLI, relay)
Commercial use: Commercial use OK
“Right to use DCP for commercial purposes” dcpagent.com/terms
Credit: Credit required
“Provide attribution to DCP and its contributors” dcpagent.com/terms
Embedding: Embedding unclear
Using the website: Free

Read on DCP (Delegated Custody Protocol)'s own pages on Oct 24, 2026 · license or terms · API docs · source code. Check the license page before you ship.

For your agent

No official API. An agent should not scrape the site: use it by hand.

Remote agents add the HTTP MCP endpoint https://dcpagent.com/connect with OAuth; local stdio MCP clients run the DCP agent (npm @dcprotocol/agent); the vault lives in DCP Desktop on the user's machine and must be online to answer requests.
Keep the Apache-2.0 license, NOTICE and attribution when redistributing DCP
Do not exceed the public relay limit of 60 requests/minute per vault; self-host the relay for more
Lost passwords or vault files cannot be recovered; back up the vault

llms.txt: dcpagent.com/llms.txt · MCP: https://dcpagent.com/connect

Paste into your agent: Read https://agentgid.com/resources/dcp/agent.md before using DCP (Delegated Custody Protocol).

Quick answers

Does DCP (Delegated Custody Protocol) have an API?

We found no official API for DCP (Delegated Custody Protocol). Use the site by hand; do not scrape it.

Is DCP (Delegated Custody Protocol) free?

Yes, there is a free tier: Fully free: desktop app, agent runtime, CLI and source are free and open source (Apache-2.0)

Can I use DCP (Delegated Custody Protocol) in a commercial project?

Yes. Its terms say: "Right to use DCP for commercial purposes"

What you can build

An agent that pays for x402 APIs in USDC under a daily cap, with larger payments approved by phone
A coding agent that uses a scoped GitHub or OpenAI credential through DCP instead of a .env file
A Solana trading bot on a VPS whose signing key stays on the owner's laptop

Alternatives in App and agent security

All 5 →

ClawSecure Before you let a third-party skill or MCP server touch your files and keys, you can look up or run an audit and have your agent check a clearance verdict and content hash in one API call. API, no keyFree tierLicense unclear AEVS (Agent Execution Verification System) A model saying it refunded a customer is not proof; AEVS gives you a checkable record of which tool ran, with what inputs and output, without changing your tools. APIOpen sourceLicense unclear Arcjet You add bot blocking, rate limits and prompt-injection checks as a few lines inside a route handler or agent tool call instead of putting a proxy or WAF in front of the app. APIFree tierCommercial: conditions MonoCloud You add login, sessions and API token checks to an app with an SDK instead of building password storage, social providers and passkeys yourself, and the free plan covers up to 50,000 monthly active users. APIFree tierCommercial OK

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