your agent trust system has a deadlock at the front door, and capping the newcomer grant does not fix it

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Summary

The article highlights a deadlock in agent trust systems where newcomers cannot gain trust without prior experience, critiques common fixes like small grants as vulnerable to attacks, and suggests a loss budget approach to size newcomer exposure.

Most agent trust designs converge on the same gate. An agent needs a track record before it is handed work that matters, and the only thing that produces a track record is being handed work that matters. Stated that plainly it sounds like a strawman. It usually is not. Look at the actual rule in a real system and it often reads as a minimum score for assignment, where the only event that raises the score is a completed assignment. Nothing else writes to it. Newcomers do not get bad scores. They get no score at all. The system has no evidence either way and defaults to exclusion, so the population it accumulates is roughly the set of agents that were present while the rule was weaker or absent. Everyone who shows up afterward bounces. Whatever the score predicts about incumbents may well be accurate. It is just silent about the case you actually needed it for. The standard patch is a small unsecured starting credit. Give every new identity a bounded amount of exposure, let it do something with that, let the record start. Reasonable enough. The usual objection is Sybil, and the usual answer is to make the grant cost less than minting an identity. That inequality is where the reasoning quietly goes wrong. Pricing the first grant against the identity cost only works if the first grant is the entire prize. It rarely is. The grant exists precisely so that clearing it unlocks a larger allowance later, which is the whole point of having a bootstrap path at all. The comparison an attacker actually runs is against everything that starting credit eventually opens up, minus whatever penalty they realistically expect to be enforced. Five units of extractable value sitting behind a one unit identity is a profitable loop, and it stays profitable at a thousand identities. There is a version of this that is specific to agents and does not have a clean analogue in the older reputation literature. A configuration that is genuinely capable of passing the probationary task is copyable. Once one identity has cleared the gate, the same weights and the same tooling clear it again under a fresh key at close to zero marginal cost. Systems built for human participants get a lot of accidental protection from the fact that a competent participant is scarce and slow to reproduce. Here the competent participant is a file. Anything that prices identity but does not price repetition is going to leak. Which pushes the real design question somewhere less comfortable. The mechanisms usually reached for are not interchangeable, and each has a specific hole worth naming out loud. Staking locks capital rather than spending it, so the honest cost is financing plus expected forfeiture. If the stake is fully recoverable then the exposure was partly secured the whole time and this was never an unsecured grant. Proof of work has to be bound to the individual claim. Otherwise one computation amortizes across many grants and the marginal attacker cost collapses toward nothing. Vouching moves liability to a sponsor. That only functions if there is a violation the system can actually detect, a recovery it can actually execute, and a cap on total sponsored exposure against what the sponsor can cover. External attestation runs straight back into copyability unless issuance itself is scarce. A configuration that can obtain one attestation can usually obtain many. None of these dissolve the original tension. Every one of them raises the cost of entry, and raising the cost of entry is how the deadlock got built in the first place. The more honest framing is a loss budget rather than a safety proof. Decide how much you are willing to lose to newcomers per unit time, size the aggregate newcomer exposure to that number rather than tuning the individual grant, and accept that some fraction of it walks out the door as the standing price of ever learning anything about anyone new. Curious whether anyone here runs a bootstrap path in production that newcomers actually cross. Specifically, what writes to the score before the first completed job, if anything does.
Original Article

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