Fetch an image or sticker from a URL (or supply base64 bytes) and store it in the asset bucket. Returns {ok, asset_key, url, width, height} - pass asset_key + url to create_memory_post content.asset_key / content.url. kind=image for photos/illustrations; kind=sticker for transparent PNG/WEBP over...
Part of the Space0 server.
Free to start. No card required.
AI agents use ingest_post_media to create or modify resources in Space0. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call ingest_post_media repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Space0.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"ingest_post_media": {
"limits": [
{
"counter": "ingest_post_media_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Space0 policy for all 60 tools.
These attack patterns abuse exactly the kind of access ingest_post_media gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Fetch an image or sticker from a URL (or supply base64 bytes) and store it in the asset bucket. Returns {ok, asset_key, url, width, height} - pass asset_key + url to create_memory_post content.asset_key / content.url. kind=image for photos/illustrations; kind=sticker for transparent PNG/WEBP overlays. source_url must be https and public; bytes_base64 is the alternative for local data. Exactly one of source_url or bytes_base64 is required.. It is categorised as a Write tool in the Space0 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Space0 MCP server in PolicyLayer and add a rule for ingest_post_media: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Space0. Nothing to install.
ingest_post_media is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the ingest_post_media rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for ingest_post_media. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
ingest_post_media is provided by the Space0 MCP server (https://mcp.0.space/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 60 Space0 tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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