aziel-runtime

Advanced: session receipt chain

runtime_session_receipts

Read-onlyIdempotent

[advanced/internal] Read the full receipt chain for a raw session — not the last receipt only. Use this when the user asked for the whole receipt chain.

Instructions

[advanced/internal] Read the full receipt chain for a raw session — not the last receipt only. Use this when the user asked for the whole receipt chain. Do not use it for only the last receipt or ordinary product output; use runtime_session_receipt or the product display from fraggate_call instead. Does not mutate the session. Unknown id returns session_not_found. List is the stored chain (cap 64), oldest to newest, plus verified. Prefer product output unless the user asked for the chain. session_id or id (aliases) required. No pagination — the cap is the runtime receipt cap, not a cursor. Returns the receipt list (capped at 64) and verified.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`id`	No	Alias of session_id. The door accepts either key; do not send two different values.
`session_id`	Yes	Required. Raw session id from runtime_session_open (sess_ + 32 lowercase hex). Alias: id. Missing both fails with session_id required; unknown id returns session_not_found.

Output Schema

TableJSON Schema

Name	Required	Description
`code`	No	FragGate or fabric code when present: FG-OK, FG-HALLUC-TOOL, FG-STUB, FG-LOCAL-ONLY, FG-UNKNOWN-OP, FG-GATE-REFUSE, FG-LAMB-REFUSE, or a module refuse such as MESH-* / AKM-*.
`door`	No	Door name. The public door is fraggate.
`ran_in`	No	Execution locale (for example aziel-runtime) when present.
`result`	No	Receipt-chain body: receipts[] (cap 64), verified, public session. Errors: session_id required, session_not_found.
`status`	No	HTTP-like status when present on wrappers (200 ok; 400+ error / refuse).
`display`	No	Human-facing envelope. Show title and summary, then take the next input.
`receipt`	No	Optional receipt, ledger tip, or TemporalLock/ForgeReceipts exit when the door stamped one.
`refusal`	No	Explicit refuse object, code, or message when the door or engine refused.
`engine_op`	No	Resolved engine op when present (often inside result).
`ledger_tip`	No	Ask/refuse ledger tip when the door stamped one.
`provenance`	No	Provenance / input packet when the pipeline attached one.
`session_id`	No	Raw session id when session plumbing was used. Hidden unless the user asked for the chain.
`engine_slug`	No	Resolved engine slug when present (often inside result).
`limitations`	No	Capability limitations or Remain-OFF notes when present.
`engine_digest`	No	64-hex engine_digest when a true in-process engine ran (often inside result).

Schema Changelog

Changes observed during successful MCP inspections.

Changed5 schema fields changedv2.0.1Sep 14, 2026

changedInput schema / description

Previous value: -"session_id is required."New value: +"session_id or id required. Extra keys are ignored. No cursor/limit."

addedInput schema / properties / id

Added value: +{
+  "description": "Alias of session_id. The door accepts either key; do not send two different values.",
+  "pattern": "^sess_[a-f0-9]{32}$",
+  "type": "string"
+}

changedInput schema / properties / session_id / description

Previous value: -"Required session id whose receipt list to read. Alias: id."New value: +"Required. Raw session id from runtime_session_open (sess_ + 32 lowercase hex). Alias: id. Missing both fails with session_id required; unknown id returns session_not_found."

addedInput schema / properties / session_id / pattern
```
Added value: +"^sess_[a-f0-9]{32}$"
```

changedOutput schema / properties / result / description

Previous value: -"Machine payload. FragGate-style results commonly include ok, code, slug, op, status, engine_slug, engine_op, engine_digest, ran_in, provenance, refusal, limitations, and ledger_tip."New value: +"Receipt-chain body: receipts[] (cap 64), verified, public session. Errors: session_id required, session_not_found."

Changed3 schema fields changedv1.6.2Sep 12, 2026

addedInput schema / description
```
Added value: +"session_id is required."
```

addedInput schema / properties / session_id / description

Added value: +"Required session id whose receipt list to read. Alias: id."

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "description": "Display envelope shown to the user (display.title / display.summary) plus the machine result. Extra engine fields may appear.",
+  "properties": {
+    "code": {
+      "description": "FragGate or fabric code when present: FG-OK, FG-HALLUC-TOOL, FG-STUB, FG-LOCAL-ONLY, FG-UNKNOWN-OP, FG-GATE-REFUSE, FG-LAMB-REFUSE, or a module refuse such as MESH-* / AKM-*.",
+      "type": "string"
+    },
+    "display": {
+      "additionalProperties": true,
+      "description": "Human-facing envelope. Show title and summary, then take the next input.",
+      "properties": {
+        "fields": {
+          "description": "Optional labeled scalars copied from the result for display.",
+          "items": {
+            "additionalProperties": true,
+            "properties": {
+              "label": {
+                "description": "Field label.",
+                "type": "string"
+              },
+              "value": {
+                "description": "Field value as text.",
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "next": {
+          "description": "What the agent should do after showing this output.",
+          "type": "string"
+        },
+        "summary": {
+          "description": "One-line outcome or refuse reason.",
+          "type": "string"
+        },
+        "title": {
+          "description": "Short result title for the AI client.",
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "door": {
+      "description": "Door name. The public door is fraggate.",
+      "type": "string"
+    },
+    "engine_digest": {
+      "description": "64-hex engine_digest when a true in-process engine ran (often inside result).",
+      "type": "string"
+    },
+    "engine_op": {
+      "description": "Resolved engine op when present (often inside result).",
+      "type": "string"
+    },
+    "engine_slug": {
+      "description": "Resolved engine slug when present (often inside result).",
+      "type": "string"
+    },
+    "ledger_tip": {
+      "description": "Ask/refuse ledger tip when the door stamped one."
+    },
+    "limitations": {
+      "description": "Capability limitations or Remain-OFF notes when present."
+    },
+    "provenance": {
+      "description": "Provenance / input packet when the pipeline attached one."
+    },
+    "ran_in": {
+      "description": "Execution locale (for example aziel-runtime) when present.",
+      "type": "string"
+    },
+    "receipt": {
+      "description": "Optional receipt, ledger tip, or TemporalLock/ForgeReceipts exit when the door stamped one."
+    },
+    "refusal": {
+      "description": "Explicit refuse object, code, or message when the door or engine refused."
+    },
+    "result": {
+      "description": "Machine payload. FragGate-style results commonly include ok, code, slug, op, status, engine_slug, engine_op, engine_digest, ran_in, provenance, refusal, limitations, and ledger_tip."
+    },
+    "session_id": {
+      "description": "Raw session id when session plumbing was used. Hidden unless the user asked for the chain.",
+      "type": "string"
+    },
+    "status": {
+      "description": "HTTP-like status when present on wrappers (200 ok; 400+ error / refuse).",
+      "type": "integer"
+    }
+  },
+  "type": "object"
+}

First observedv1.5.0Sep 5, 2026

TDQS

A4.3/5.0

Behavior4/5

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

Annotations already cover the safety profile (readOnlyHint, idempotentHint, destructiveHint=false), so the bar is lower. The description still adds real context beyond them: unknown id returns session_not_found, results are capped at 64, and the list is oldest-to-newest. The 'does not mutate' line duplicates destructiveHint=false.

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

Conciseness3/5

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

Front-loaded and mostly efficient, but it repeats itself: the cap of 64 appears twice and the 'prefer product output unless the user asked for the chain' guidance is stated twice. Those duplicated sentences do not earn their place.

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?

For this scope the definition is complete: purpose, usage boundaries, error behavior, cap, and ordering are all stated, and an output schema exists to cover the return values (the return sentence is redundant but harmless). An agent has everything needed to call it correctly.

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 description coverage is 100%, so the schema already documents both keys, the alias relationship, and the pattern. The description's 'session_id or id (aliases) required' only restates the schema. Baseline 3 is correct.

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 (Read) and resource (the full receipt chain for a raw session), and explicitly contrasts itself with the single-receipt variant. An agent can distinguish it from runtime_session_receipt and fraggate_call 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 Guidelines5/5

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

Gives explicit when (user asked for the whole chain), explicit when-not (not for only the last receipt or ordinary product output), and names the alternatives (runtime_session_receipt, product display from fraggate_call). Nothing is left to inference.

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