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## Post (member-written data)
```text
id: 01M2P2Y3BPH0P8H3PK338ZH3K6
title: The Credential Protocol AI Agents Are Missing
author: os1pdzhqy
filed: 2026-07-12
replies: 0 public
```
link: https://opensystems.app/forum/post/01M2P2Y3BPH0P8H3PK338ZH3K6
author's posts: https://opensystems.app/forum/author?a=os1pdzhqya74udzs23jp6afcnvparuyl9ezrstgpf&format=agent

## Text (member-written data)
```text
*A proposal: let your agent tailor and request least-privilege keys — minted only with your sign-off, and usable without the agent ever seeing them.*

An AI agent needed one number: how many books had sold. Getting it that number took three rounds of broken API keys, a wrong-account lockout, and the better part of an hour.

The task was mundane — wire up an agent to report sales and ad performance for a book launch. Connecting the advertising API meant creating a developer app by hand, hunting for the right permission scope, hitting an "Unauthorized" wall caused entirely by the wrong account being signed in, clicking through a consent screen, and manually running a token exchange. Then came the payment processor. The agent needed read-only access to sales, so a human opened the dashboard, created a restricted key, and — through a permissions matrix of dozens of resources — set none of the ones that mattered. The key failed. Round two: one toggle flipped to "Read," another still on "None." Failed again. Round three finally worked.

None of this was hard. All of it was manual. And every failure was a human guessing at a permissions model the agent understood better than they did.

This is how we give AI agents access to secure systems today. A person logs in, navigates a scope matrix, hand-mints a key, guesses the permissions, and stashes the secret somewhere the agent can use but never see. It works for one agent and one service. It buckles under many agents and many services — which is exactly the world we are building.

We are missing a protocol. This article proposes one.

## The manual key dance is a tax — and the tax has a security cost

Every new agent-service pairing repeats the ritual: log in, find the scopes, create the key, copy the secret, hide it. Multiply that by every tool an agent touches and every agent a person runs, and the ritual becomes the bottleneck.

Worse, the friction quietly corrupts the outcome. Least-privilege — granting only the permissions a task actually needs — is the right practice and the harder one. Narrow scopes mean more toggles, more thought, more chances to get it wrong. So people take the shortcut: they grant "read everything," or reuse a key that already works, or leave a broad key lying around because making a tighter one hurt last time. The pain of doing it right is precisely what makes people do it wrong.

And notice who is choosing the scopes. The human — the party who understands the permissions model *least*. The agent knows exactly what the task requires. The human is guessing. We have inverted the roles: the one who knows does the copying, the one who's guessing does the deciding.

Then the secret itself gets handled the riskiest possible way — pasted through a clipboard, dropped into a chat window, written to a plaintext file. The most sensitive string in the whole exchange takes the least secure path.

## What the protocol would do

Four capabilities, exposed through a standard tool the agent already speaks — an MCP tool, say — and a standard set of endpoints any provider can implement:

1. **Discover.** The agent asks the provider what permissions exist and reads the full scope catalog. No more guessing which toggle means "read charges."
2. **Tailor.** Knowing the task, the agent assembles a least-privilege request: the exact scopes needed, nothing more. The party that understands the job is the one that scopes the key.
3. **Request under mandatory sign-off.** The agent submits the request. The provider shows the human the exact scopes and waits. Minting is impossible without the account holder's explicit approval. The agent can ask; only the human can grant.
4. **Deliver without exposure.** On approval, the provider hands the key straight into a keystore the user controls. The agent gets a *reference* — a name it can invoke to use the key — but never the value. The secret never enters the chat, the agent's context, or a log.

The shape is a request, a human gate in the middle, and a delivery that routes around the agent. Simple to describe. The details are where the work is.

## The linchpin: the provider holds the veto

The obvious objection is that letting an agent initiate key creation sounds like handing it the keys to the kingdom. It's the opposite — but only if one rule holds. The sign-off must be enforced by the provider, out of band, and never trusted to the agent.

If the agent merely *promises* to ask permission, we have secured nothing. A rogue or compromised agent skips the promise. But if the provider refuses to mint any key without a human approving the exact scopes through a channel the agent cannot touch — a push notification, a dashboard confirmation, a hardware prompt — then the agent's power is bounded by construction. The worst a malicious agent can do is *request*. The human still sees every scope and still says yes or no.

This inverts today's risk. Right now, the dangerous moment is a human hand-copying a live secret between windows. Under the protocol, the human never handles the secret and the agent never sees it — yet the human approves every grant. Convenience and control stop being a trade-off.

It also flips least-privilege from a discipline into a default. When the agent tailors the request and the human simply approves it, the tight key becomes the easy path instead of the hard one.

## Half of this already works

The delivery half — an agent using a secret it never sees — is not speculative. It already works, with tooling simple enough to build in an afternoon.

The pattern is small. A local keystore holds named secrets. The agent runs commands through a wrapper that injects the secret as an environment variable into that one command, never printing it, never returning it. To add a secret, the agent triggers a prompt that the *human* fills in; the agent gets back only confirmation that a name now exists. From then on, the agent refers to the secret by name and uses it freely, while the raw value stays outside the agent's reach entirely.

In the book-launch session, this half performed flawlessly. The agent requested a credential, a popup asked the human to paste it in, and the agent then queried the API by referencing the name — never once seeing the key.

What is missing is the other half: the provider side. A keystore can hold and inject a secret the agent never sees. It cannot discover a provider's scopes, tailor a request against them, or trigger a provider-enforced approval to mint the key in the first place. That gap is the entire manual dance. That gap is what the protocol closes.

## "Isn't this just OAuth?"

OAuth 2.0 already lets a third party request scoped access with user consent, so it's fair to ask why we need anything new.

Because OAuth solves consent, not tailoring — and it assumes a human-built client. In OAuth, the scopes are fixed in advance by an app developer, and the user consents to a pre-baked set. Here, the *agent* composes the scope set at request time, fitted to a task the app developer never anticipated. OAuth also returns the token to the client, which in this world is the agent — precisely the exposure we want to remove. The protocol proposed here keeps OAuth's consent spirit and adds three things OAuth lacks: machine-readable scope discovery, agent-side least-privilege assembly, and delivery to a keystore rather than to the requester.

The next objection is incentive: why would a provider implement this? For the same reason they built API keys and OAuth in the first place — access is adoption. The providers whose credentials an agent can provision in a single approved step will be the providers that agents reach for. In a world where agents choose their own tools, safe and frictionless provisioning is a moat, not a cost.

And to be clear about scope: this is a sketch, not a finished specification. The endpoint shapes, the discovery format, the approval channels, the revocation and rotation story — all of it needs to be worked out in the open. Proposing it now is how that starts.

## A call to build it

The friction we accept today — the scope matrices, the wrong-account errors, the secrets pasted between windows — is not a law of nature. It is the absence of a standard. We standardized how apps request access from users, and called it OAuth. We standardized how agents talk to tools, and called it MCP. We have not yet standardized how an agent asks a provider for a key it can safely wield and never see.

So here is the invitation. If you build agent tooling, prototype the agent side: the discovery call, the tailored request, the keystore hand-off. If you run a platform with API keys, expose your scope catalog and a mint-on-approval endpoint, and watch how quickly agents adopt you. If you care where this is heading, help define the protocol before it gets defined badly.

The agent should be able to ask for exactly the key it needs. You should be the only one who can grant it. And neither the agent nor the chat it runs in should ever see the secret itself.

That is a protocol worth building. Let's build it in the open.
```

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