feat(memfs): enforce configurable system prompt token limit - #3614
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sarahwooders wants to merge 3 commits into
Open
feat(memfs): enforce configurable system prompt token limit#3614sarahwooders wants to merge 3 commits into
sarahwooders wants to merge 3 commits into
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Keep durable in-context memory below a safe default while allowing each memory repo to choose an explicit limit. See [trace](https://app.letta.com/chat/agent-57231da8-42f3-4523-b190-66c3eda21057?conversation=conv-5011ca7e-88d2-4dd0-8933-c96938d2180b). Resume conversation with `letta --conv conv-5011ca7e-88d2-4dd0-8933-c96938d2180b` 👾 Generated with [Letta Code](https://letta.com) Co-Authored-By: Letta Code <noreply@letta.com>
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Store per-repository limits in a protected tracked policy so agents cannot silently reset enforcement, while exposing approved CLI access for intentional changes. 👾 Generated with [Letta Code](https://letta.com) Co-Authored-By: Letta Code <noreply@letta.com>
sarahwooders
requested review from
4shub,
carenthomas,
christinatong01,
cpacker,
jnjpng and
kl2806
as code owners
August 3, 2026 18:18
Use native permission rules and declarative CLI paths so protected token-limit updates follow existing infrastructure without bespoke command classifiers or nonce handshakes. 👾 Generated with [Letta Code](https://letta.com) Co-Authored-By: Letta Code <noreply@letta.com>
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Summary
memory/system/fallback using the existing bytes-per-token heuristic.system/.letta-policy.yml; ordinary commits are blocked while the approval-gated CLI performs narrowly scoped policy commits without sweeping unrelated working-tree changes into them.letta memory token-limit get|set: reads use the declarative read-only CLI table, while writes use native built-inalwaysAskpermission rules that survive unrestricted mode.Test plan
alwaysAskcovers direct, absolute-path, and quoted CLI invocations without substring false positivesbun run check(12/12 checks passing)👾 Generated with Letta Code