# Mnemo Observe - Interaction Signal Memory

> Mnemo Observe - Interaction Signal Memory is a paid API for AI agents from memory.reversecaptcha.fun, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).

Records a user interaction signal (e.g. welcomed or annoyed by an assumed memory) to update the agent's clarification tolerance model for that user

## Facts

- Endpoint: POST https://memory.reversecaptcha.fun/v1/memory/observe?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mnemo-observe-interaction-signal-memory-6c659144
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2wnUwQFH-2Nh_AVITwTmg

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mnemo-observe-interaction-signal-memory-6c659144 -d '<json body>'
```

Example prompt: Log to Mnemo that when I assumed the user's preference without asking, they corrected me — use the 'assumed_and_corrected' signal so my clarification tolerance score gets updated.

## When to prefer this

Use this endpoint after any interaction where the user's reaction to an assumption or clarifying question is observable — it is specifically designed to build a behavioral tolerance model unique to Mnemo's portable cross-agent memory system, unlike generic memory stores that lack structured interaction signal tracking.

## Known failure modes

- Invalid signal enum value returns a 422 validation error
- Missing or expired bearer token returns 401 unauthorized
- Payment not settled via x402 returns 402 payment required
- User delegation not established returns 403 forbidden
- Service unavailable returns 503 with retry guidance

## How this service works

Memory that belongs to the user and follows them across agents. The agent pays per call (x402); the user authorizes the agent once: POST /v1/memory/delegate/challenge {user, agent} returns text the user signs (EIP-191), then POST /v1/memory/delegate {..., signature} returns a bearer token. Send Authorization: Bearer mn_... on every memory call. Start a session with GET /v1/memory/profile, write with POST /v1/memory/remember, retrieve with POST /v1/memory/recall (hybrid vector + keyword). When the user contradicts a memory, POST /v1/memory/conflict supersedes it with history kept. Tier B stores client-side ciphertext the server cannot read. Export and forget are always free.

## Output

Returns an updated observation count (integer) and a recalculated clarification tolerance score (float 0–1) reflecting how much the user tolerates agent assumptions vs. prefers explicit clarifying questions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "signal": {
   "enum": [
    "asked_and_welcomed",
    "asked_and_annoyed",
    "assumed_and_corrected",
    "assumed_and_accepted"
   ]
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "observations": 5,
  "clarification_tolerance": 0.43
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mnemo-observe-interaction-signal-memory-6c659144/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from memory.reversecaptcha.fun](https://www.zero.xyz/host/memory.reversecaptcha.fun/llms.txt)