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Read temporary data

read_temporary_data

Read-onlyIdempotent

Fetch back a JSON value that store_temporary_data saved earlier, in this session or in another one. Returns the value exactly as it was stored. Fails if the id is unknown or if the 24 hour lifetime has already passed, so treat a failure as expired or never written rather than as a temporary fault worth retrying. sha256_hash is the digest of the stored bytes and bytes their length, the same values store_temporary_data reported. A value stored with max_downloads answers downloads_left, how many reads remain, and is gone once they are taken. No API key, no account and no sign up: call it directly.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`storage_id`	Yes	The UUID that store_temporary_data returned.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`data`	Yes
`bytes`	Yes
`storage_id`	Yes
`sha256_hash`	Yes
`downloads_left`	No
`expire_timestamp`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 6, 2026
- addedOutput schema / properties / downloads_left
```
Added value: +{
+  "type": "integer"
+}
```

Changed3 schema fields changedSep 19, 2026

addedOutput schema / properties / bytes
```
Added value: +{
+  "type": "integer"
+}
```
addedOutput schema / properties / sha256_hash
```
Added value: +{
+  "type": "string"
+}
```

changedOutput schema / required

Previous value: -[
-  "storage_id",
-  "data",
-  "expire_timestamp"
-]New value: +[
+  "storage_id",
+  "data",
+  "sha256_hash",
+  "bytes",
+  "expire_timestamp"
+]

Changed1 schema field changedAug 20, 2026
- addedInput schema / properties / storage_id / description
```
Added value: +"The UUID that store_temporary_data returned."
```
First observedAug 17, 2026

TDQS

A4.4/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Goes well beyond the annotations (readOnly, idempotent, closed-world) by disclosing the 24-hour lifetime, that failures are terminal rather than transient, that sha256_hash/bytes mirror the stored values, that max_downloads produces downloads_left and consumes reads, and that no API key is required. This is exactly the operational context an agent needs and the annotations cannot supply.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with what it returns and what it pairs with, and each sentence carries real information. The closing 'No API key, no account and no sign up' is slightly promotional padding, keeping it just short of a 5.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Complete for a one-parameter read tool: the description covers the source of the value, lifetime, failure semantics, and the meaning of the returned metadata, while an output schema exists to formalize the shape. Nothing an agent needs to call it correctly is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the single parameter's description already states it is the UUID returned by store_temporary_data, so the schema carries the load. The description's sha256_hash/bytes/downloads_left text describes return fields, not the input parameter, so it adds no input-side meaning beyond the baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb (fetch back) and resource (a JSON value stored by store_temporary_data), naming the exact sibling that produced the data. An agent can distinguish this from read_stored_file or read_agent_queue_job without opening any schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives clear context: use it to retrieve values written by store_temporary_data, in this or another session. It also gives explicit error-handling guidance ('treat a failure as expired or never written rather than a temporary fault worth retrying'), which is unusually actionable. It does not, however, contrast with the sibling read_stored_file, so it falls short of the when-not/alternatives bar.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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