# Relaystation Scratchpad — Shared Agent Working Memory

> Relaystation Scratchpad — Shared Agent Working Memory is a paid API for AI agents from api.relaystation.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Append, read, and collaborate on a durable shared scratchpad with per-collaborator tokens; supports multi-agent workflows with persistent working memory.

## Facts

- Endpoint: POST https://api.relaystation.ai/v1/storage/scratchpad
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/relaystation-scratchpad-shared-agent-working-memory-f88842ba
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Yf2Wp1ywLH6VGWKywflCq

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 relaystation-scratchpad-shared-agent-working-memory-f88842ba -d '<json body>'
```

Example prompt: Append the following notes to our shared scratchpad so the other agents in this pipeline can read them: 'Step 2 complete — extracted 42 records from the invoice, pending deduplication.'

## When to prefer this

Choose this endpoint when multiple agents or an agent-human pair need to share durable, append-able working memory within a pipeline — especially when no heavier database is warranted, when a human needs an online editor view of agent notes, or when per-collaborator token isolation is needed across a Relaystation-based workflow. Prefer over generic object storage when lightweight scratchpad semantics (append, read, collaborate) and sub-cent pricing on one shared balance are priorities.

## Known failure modes

- Invalid or missing collaborator token — authentication failure
- Scratchpad size limit exceeded — payload too large error
- Network timeout on write — content not persisted, retry required
- Malformed request body — 400 bad request
- Insufficient balance for $0.01 USDC per-call fee — payment rejected

## How this service works

Shared working memory for agents — append, read, and collaborate on a durable scratchpad with per-collaborator tokens; humans get an online editor. From $0.001. Part of Relaystation: 155 agent tools on one balance — storage, e-sign, KYC, PDF/data/media, sub-cent LLM. relaystation.ai

## Output

Returns confirmation that the content was appended or the current contents of the scratchpad, with per-collaborator token scoping so each agent or human can read and write their own view of shared durable memory.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ]
    },
    "bodyType": {
     "type": "string",
     "enum": [
      "json",
      "form-data",
      "text"
     ]
    },
    "body": {
     "properties": {}
    }
   },
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   },
   "required": [
    "type"
   ]
  }
 },
 "required": [
  "input"
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/relaystation-scratchpad-shared-agent-working-memory-f88842ba/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.relaystation.ai](https://www.zero.xyz/host/api.relaystation.ai/llms.txt)