WithMemory review
Hosted memory API with semantic recall, direct writes and a free monthly tier.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
WithMemory is a hosted memory API and JavaScript SDK for AI agents that need to carry durable facts across sessions, models and restarts. It suits solo developers and small teams seeking a straightforward way to store and retrieve agent context. Namespaces can separate memories by user, project, research area or agent, while ranked semantic recall returns prompt-ready context. Agents can write known facts directly or send free-form text for LLM-based extraction.
The three monthly plans scale by memory and API-call allowance. Free provides 1,000 memories and 10,000 API calls, with the default extraction prompt and community support. Basic costs $9 per month for 10,000 memories and 100,000 API calls; it also uses the default prompt and includes email support. Pro costs $29 per month for 100,000 memories and 1,000,000 API calls, adds a custom extraction prompt, and includes email support with a 48-hour response. Pro also adds isolated containers and scoped credentials. These tiers make the product accessible for evaluation and offer a clear capacity path, though the listed plan features center on quotas, extraction and access controls.
Its feature set covers both durable storage and a separate unauthenticated cache with a 24-hour lifetime, plus methods to list, retrieve and delete memories. The API is cloud-hosted; the JavaScript SDK is distributed through npm, and agents that can make HTTP requests are supported. That keeps the integration model focused rather than offering a range of SDK languages or deployment choices. The main caveat is service maturity: the terms describe WithMemory as alpha and best-effort without a formal SLA. Teams comfortable with that posture may find it a practical fit for hosted agent recall; teams requiring a formal reliability commitment or self-hosting should look elsewhere.
WithMemory pros and cons
- Where it wins
- Stores memories in scoped namespaces for users, projects or agents
- Combines direct key-value writes with LLM fact extraction and ranked recall
- Free plan includes 1,000 memories and 10,000 API calls per month
- Where it doesn't
- Hosted cloud service only; no self-hosted deployment option is listed
- JavaScript is the only SDK language listed
- Terms describe an alpha, best-effort service without a formal SLA
WithMemory fact sheet, pricing and score →
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