cargo-tangle 0.7.0

A command-line tool to create and deploy blueprints on Tangle Network
docs.rs failed to build cargo-tangle-0.7.0
Please check the build logs for more information.
See Builds for ideas on how to fix a failed build, or Metadata for how to configure docs.rs builds.
If you believe this is docs.rs' fault, open an issue.
Visit the last successful build: cargo-tangle-0.5.0-alpha.11

Tangle CLI

Create, run, and operate blueprints on Tangle EVM.

Overview

The CLI bundles every workflow needed for the EVM-only SDK:

  • cargo tangle blueprint create scaffolds a new blueprint from the templates.
  • cargo tangle blueprint run --protocol tangle boots a manager connected to the Tangle v2 contracts.
  • cargo tangle blueprint register-tangle registers an operator against ITangle, MultiAssetDelegation, and OperatorStatusRegistry.
  • cargo tangle key * manages local and remote k256 keys via blueprint-keystore.

Installation

Linux, macOS, and Windows (WSL2) are supported.

cargo install cargo-tangle --git https://github.com/tangle-network/blueprint --force

Feature flags

Source installs enable full by default, including blueprint development, registration, operator and key commands. Release archives and the shell installer also enable remote-providers, which adds cargo tangle cloud; add it to a source install with --features remote-providers. vm-debug adds the Linux VM sandbox.

The release also includes cargo-tangle-cloud-<target>.tar.xz and its .sha256 file for native Linux x86_64 and aarch64. These archives contain cargo-tangle built from the same source with --no-default-features --features cloud-only. They expose only the cloud commands, with the same providers as the standard archives, and have no Anvil, testcontainers or cargo-generate in the production dependency graph. Chain and key libraries still link, because the provider and pricing crates depend on them. Standard archives carry the full CLI with cloud commands. Install the cloud-only flavor from source:

cargo install cargo-tangle --git https://github.com/tangle-network/blueprint \
  --no-default-features --features cloud-only --force

Verify the downloaded .sha256 file before extracting the archive.

Creating a New Blueprint

cargo tangle blueprint create --name my_blueprint

The scaffold asks for a source template, optional variables, and whether to skip prompts. The generated workspace already depends on blueprint-sdk with the tangle feature.

For Tangle blueprints, the scaffold also includes a metadata/blueprint-metadata.json file. Publish that JSON to IPFS or HTTPS, then set the resulting URI as metadata_uri in your deploy definition. Add either metadata_hash or metadata_file as well so the deploy manifest pins the expected payload digest onchain. The URI is what lands onchain; the full JSON stays offchain and is what tangle-cloud ingests to render tier-2 hosted blueprint surfaces.

For production tier-2 hosting, publish to ipfs:// and include an owner-signed metadata attestation. If the shared host cannot verify provenance, it falls back to the protocol-controlled generic blueprint UI.

Running a Blueprint on Tangle

The runner expects RPC URLs, a keystore, and the EVM contract coordinates. You can provide them via CLI flags or a settings.env file that the command loads before boot.

BLUEPRINT_ID=0 \
SERVICE_ID=0 \
TANGLE_CONTRACT=0x0165878A594ca255338adfa4d48449f69242Eb8F \
STAKING_CONTRACT=0xDc64a140Aa3E981100a9becA4E685f962f0cF6C9 \
STATUS_REGISTRY_CONTRACT=0x2bdCC0de6bE1f7D2ee689a0342D76F52E8EFABa3 \
cargo tangle blueprint run \
  --protocol tangle \
  --http-rpc-url http://127.0.0.1:8545 \
  --ws-rpc-url ws://127.0.0.1:8546 \
  --keystore-path ./keystore \
  --settings-file ./settings.env
Variable Description
BLUEPRINT_ID Blueprint registered on ITangle.
SERVICE_ID Optional fixed service (leave unset to process all).
TANGLE_CONTRACT ITangle contract address.
STAKING_CONTRACT MultiAssetDelegation staking contract.
STATUS_REGISTRY_CONTRACT OperatorStatusRegistry heartbeat contract.

The CLI automatically ensures an ECDSA key exists under --keystore-path and derives the operator address from it.

Registering an Operator

register-tangle performs the on-chain registration + announcement flow in one command:

cargo tangle blueprint register-tangle \
  --http-rpc-url https://rpc.tangle.tools \
  --ws-rpc-url wss://rpc.tangle.tools \
  --keystore-path ./keystore \
  --tangle-contract 0x0165878A594ca255338adfa4d48449f69242Eb8F \
  --staking-contract 0xDc64a140Aa3E981100a9becA4E685f962f0cF6C9 \
  --status-registry-contract 0x2bdCC0de6bE1f7D2ee689a0342D76F52E8EFABa3 \
  --blueprint-id 0 \
  --registration-inputs ./registration.tlv

You can optionally set --rpc-endpoint to push metadata to a remote operator directory service during registration.

Service Lifecycle Commands

The cargo tangle blueprint service namespace mirrors everything exposed in Tangle.sol:

  • service request submits a pending service with per-operator exposures, rich config payloads, and optional asset security requirements.
  • service approve / service reject lets operators respond to a request; approvals can include explicit asset commitments when the request included requirements.
  • service join / service leave let operators participate in dynamic membership services; leaving succeeds when the service's exit queue allows the legacy helper.
  • service list and service requests surface active services vs. pending requests, with a --json toggle for scripting.

Requesting a Service

cargo tangle blueprint service request \
  --blueprint-id 1 \
  --operator 0x... --operator 0x... \
  --operator-exposure-bps 7000 --operator-exposure-bps 3000 \
  --permitted-caller 0xdeadbeef... \
  --config-file ./service-config.bin \
  --ttl 86400 \
  --payment-token 0x0000000000000000000000000000000000000000 \
  --payment-amount 1000000000000000000 \
  --security-requirement native:_ :5000:10000
  • Provide one --operator-exposure-bps per operator (basis points, 10_000 = 100%). Leave unset to fall back to the default BPS of 100% per operator.
  • Security requirements use the format KIND:TOKEN:MIN:MAX where KIND is native or erc20. Use _/0 for the native token placeholder.
  • TTLs are expressed in seconds to match the Tangle.sol schema.

Approving or Rejecting

# Simple staking approval
cargo tangle blueprint service approve \
  --request-id 42 \
  --staking-percent 50

# Approval that matches request-level security requirements
cargo tangle blueprint service approve \
  --request-id 42 \
  --security-commitment native:_ :6000
  • --security-commitment mirrors the KIND:TOKEN:EXPOSURE structure expected by approveServiceWithCommitments.
  • Use service reject --request-id <ID> to decline participation.

Listing Services/Requests

cargo tangle blueprint service list --json
cargo tangle blueprint service requests --json

Both commands read via TangleClient::{list_services,list_service_requests} and print either friendly tables or JSON for automation.

Blueprint Upgrade Flow

Shipping a new build of a blueprint touches three actors. The CLI gives each of them a first-class subcommand surface so nobody has to hand-craft calldata.

            ┌─────────────────────┐
            │  blueprint owner    │  publish-version → set-active-version
            └─────────┬───────────┘
                      │
                      ▼
            ┌─────────────────────┐
            │  auditor / scanner  │  attest submit → (optional) attest revoke
            └─────────┬───────────┘
                      │
                      ▼
            ┌─────────────────────┐
            │  service operator   │  service set-policy → service ack-version
            └─────────────────────┘

1. Publish a new version (blueprint owner)

# Hash the artifact locally, pin to IPFS, and submit publishBinaryVersion.
cargo tangle blueprint publish-version \
  --blueprint-id 7 \
  --binary ./target/release/my-blueprint \
  --pin-to-ipfs \
  --attestation-bundle ./dist/sigstore-bundle.json \
  --json
  • --binary <path> is hashed (sha256) locally; the digest becomes sha256Hash on-chain.
  • Provide either --binary-uri ipfs://<cid> (you've already pinned) or --pin-to-ipfs (the CLI pins via IPFS_API_URL+IPFS_API_TOKEN if set, or PINATA_JWT as a fallback).
  • --attestation-bundle <path> is hashed and stored as attestationHash. Pass --attestation-hash <hex> to override directly (e.g. when the bundle lives off-disk).

The command prints the new version_id and tx hash. In JSON mode the output is a single line you can pipe to jq:

{ "event": "binary_version_published",
  "blueprint_id": 7, "version_id": 3,
  "sha256_hash": "0x...", "binary_uri": "ipfs://...",
  "attestation_hash": "0x...", "tx_hash": "0x...", "block_number": 12345 }

Promote (or roll back) the active pointer once you're ready:

cargo tangle blueprint set-active-version --blueprint-id 7 --version-id 3
cargo tangle blueprint deprecate-version  --blueprint-id 7 --version-id 1
cargo tangle blueprint list-versions      --blueprint-id 7        # table view
cargo tangle blueprint show-version       --blueprint-id 7 --version-id 3

2. Attest as an auditor

# Hash the audit report locally, pin it, and emit attestBinaryVersion.
cargo tangle attest submit \
  --blueprint-id 7 \
  --version-id 3 \
  --report ./audits/2026-05-tangle-bp-7-v3.pdf \
  --pin-report-to-ipfs \
  --kind AUDIT \
  --severity low \
  --expires-in 6m \
  --json
  • --report accepts either a local file (which is hashed; optionally pinned via --pin-report-to-ipfs) or a remote URL (https://..., ipfs://...). When passing a URL, pre-compute the hash and feed it via --report-hash <hex>.
  • --kind is one of AUDIT, FUZZ, FORMAL, BUG_BOUNTY, SELF.
  • --severity maps to the on-chain uint8 ladder: none/info/low/med/high/critical.
  • --expires-in accepts human durations (6m, 30d, 1y, 90d12h); omit for non-expiring.

Other attest commands:

cargo tangle attest list   --blueprint-id 7 --version-id 3 --json
cargo tangle attest revoke --blueprint-id 7 --version-id 3 \
  --attestation-id 2 \
  --reason ipfs://bafy.../revocation-note.json

3. Adopt the upgrade as an operator

Set the policy once, then ack each new version under APPROVE:

# Pick a policy: AUTO (follow blueprint owner), APPROVE (opt-in), MANUAL (pin to genesis).
cargo tangle blueprint service set-policy --service-id 42 --policy APPROVE

# Opt in to a specific version.
cargo tangle blueprint service ack-version --service-id 42 --version-id 3

# Inspect what's actually running and how far ahead the upstream is.
cargo tangle blueprint service effective-version --service-id 42 --blueprint-id 7 --json
cargo tangle blueprint service upgrade-status     --service-id 42 --blueprint-id 7 --json

upgrade-status prints the policy, the operator's acked version, the blueprint's active version, the effective version the manager will dispatch against, and the latest published version — exactly what an operator-facing dashboard needs.

CI gating: trust score

# Compute the weighted trust score the dapp would render for version 3.
cargo tangle blueprint trust-score \
  --blueprint-id 7 --version-id 3 \
  --auditors-contract 0xAud1tors... \
  --min-score 80           # exits non-zero if score < 80; great for CI

The score walks every non-revoked, non-expired attestation, looks each attester up in BlueprintAuditors, and produces a normalized 0..=100 number plus per-attestation diagnostics. Without --auditors-contract the score collapses to zero (all attesters treated as anonymous) — the flag should always be set in production.

IPFS configuration

Two environment knobs:

# Generic (Kubo / w3up / any service that accepts multipart/form-data + Bearer):
IPFS_API_URL=https://api.web3.storage/upload   IPFS_API_TOKEN=eyJ...

# Pinata fallback (only used if IPFS_API_URL is unset):
PINATA_JWT=eyJhbGciOi...

Pin endpoints must return JSON containing one of cid, Hash, or IpfsHash; the resulting ipfs://<cid> URI is what lands on-chain.

One-command shipping (cargo tangle blueprint ship)

For the common case — "I just landed a feature, build the binary, pin it, publish the new version, and promote it" — there is cargo tangle blueprint ship. It composes all the above steps into a single interactive flow:

$ cargo tangle blueprint ship
🚀 Shipping blueprint:  blueprintId=7  (/home/me/my-blueprint)
  RPC     https://sepolia.base.org
  Wallet  0xAbC...123 ✓ blueprint owner

? Build a release binary now?              › Yes
  > Building: cargo build --release -p my-blueprint
  sha256       0x9af3…                       (6.21 MB)
? Pin binary to IPFS?                       › Yes
  binaryUri    ipfs://bafyb…
? Publish v? on-chain (blueprint=7)?        › Yes
  ✓ Published v3 (block 184221)
? Promote to active version?                › Yes
  ✓ Promoted v3 (tx 0x…)

── Shipped v3 ─────────────────────────────
  sha256     0x9af3…
  binaryUri  ipfs://bafyb…
  promoted   true
  block      184221
  tx_hash    0x…

Auto-detection

The wizard tries (in order) --blueprint-id, BLUEPRINT_ID= in ./settings.env, then blueprintId in ./metadata/blueprint-metadata.json. It picks the first non-zero value.

CI mode

Skip all prompts with --yes:

cargo tangle blueprint ship --yes --pin-ipfs --promote \
  --blueprint-id 7 \
  --binary ./target/release/my-blueprint \
  --attestation-bundle ./dist/sigstore-bundle.json \
  --policy-services 42,43

In --yes mode the wizard prints one JSON event per phase, with the final ship_complete event carrying the new version_id, the publish tx, and whether setActiveBinaryVersion ran. The tangle-network/blueprint/.github/actions/ship-release composite action consumes that JSON to populate its outputs.

Common flag matrix

Flag Effect
--yes Accept every prompt; switch output to JSON
--dry-run Hash + (optionally) pin + report; submit nothing
--no-build --binary <path> Skip cargo build; ship a pre-built artifact
--binary-uri ipfs://… Skip IPFS pin; assume URI is already addressable
--no-promote Publish but don't setActiveBinaryVersion
--policy-services 42,43 Bulk-flip listed services into AUTO policy
--attestation-bundle <path> Hash the bundle and store its sha256 on-chain
--attestation-hash 0x… Use a pre-computed attestationHash

Manual-with-assist (operator local-authz)

For operators on MANUAL policy who want the manager to swap into specific versions but don't want to (a) move out of MANUAL on-chain or (b) spend gas on ackBinaryVersion, the manager exposes a local authorization layer. Pre-authorized swaps still run the full sha256+attestation gate — the only thing the operator is sidestepping is the audit-trail tx.

# List what versions the manager sees on-chain (no chain calls — talks to the
# local manager's /upgrades/{service_id}/available).
cargo tangle blueprint service upgrades --service-id 42

# Pre-authorize a single one-shot swap to v3 the next time it becomes effective.
cargo tangle blueprint service upgrade-local --service-id 42 --version-id 3

# Stage a fleet-wide rollout: every version in this list is acceptable.
cargo tangle blueprint service upgrade-whitelist --service-id 42 --versions 2,4,5

# Explicitly skip v3 (canary regression). Reason lands in the manager's audit log.
cargo tangle blueprint service upgrade-skip --service-id 42 --version-id 3 \
  --reason "Failed latency canary; waiting for v4"

# Show what local-authz state the manager is holding for this service.
cargo tangle blueprint service upgrade-authz --service-id 42 --json

Manager URL resolution (highest wins): --manager-url → BLUEPRINT_MANAGER_URL env → http://127.0.0.1:9000. The pre-authorization persists in <manager-data-dir>/upgrade-authz/<serviceId>.json, so the operator can stage a pin/whitelist during a maintenance window and walk away — a restart of the manager rebuilds the state cleanly.

Cloud Commands

Note: Release archives include cloud commands; source installs need the remote-providers feature. See Feature flags.

The cloud commands configure providers, quote live prices, and inspect and terminate deployments recorded in the deployment tracker. No CLI command allocates capacity, updates a running deployment or reads its logs, and cargo tangle blueprint run cannot enable the manager's remote deployment path.

Configure Cloud Provider

configure saves a region and default provider. Credentials come from the environment, and for AWS also from ~/.aws/credentials. configure names the variables a provider needs; it never stores a credential. A token can also come from the Compute Engine metadata server for GCP, and from a managed identity or az login for Azure.

# Configure AWS
cargo tangle cloud configure aws --region us-east-1 --set-default

# Configure GCP
cargo tangle cloud configure gcp --region us-central1

# Configure other providers
cargo tangle cloud configure digitalocean --region nyc1
cargo tangle cloud configure vultr --region ewr
cargo tangle cloud configure azure --region eastus

Cost Estimation

# Compare costs across all providers
cargo tangle cloud estimate --compare --cpu 4 --memory 16

# Estimate a configured provider using its live on-demand price
cargo tangle cloud estimate --provider aws --duration 30d

# GPU-enabled instances
cargo tangle cloud estimate --provider gcp --gpu 1 --cpu 8 --memory 32

Deployment Policy

# Rank providers for the manager's remote deployments
cargo tangle cloud policy --gpu-providers gcp,aws --cost-providers vultr,do

Monitor Cloud Deployments

status and terminate read the tracker at TANGLE_DEPLOYMENT_TRACKER_PATH, by default ~/.tangle/remote_deployments. Both reach each provider in the region its record names, and a provider that is missing a variable affects only its own deployments. status shows unknown when the provider cannot answer, and status <id> also says why. terminate exits non-zero if any deployment is not confirmed terminated, and that deployment stays tracked.

# Check status of all deployments
cargo tangle cloud status

# Check specific deployment
cargo tangle cloud status dep-abc123

# Terminate one deployment
cargo tangle cloud terminate dep-abc123

# Terminate every tracked deployment
cargo tangle cloud terminate --all

Preflight and TEE Readiness

# Validate credentials/provider readiness and print manager bootstrap env
cargo tangle cloud preflight --bootstrap-env

# Validate fail-closed TEE readiness (including cryptographic verifier requirements)
cargo tangle cloud preflight --tee-required --bootstrap-env

# Write bootstrap env directly to file
cargo tangle cloud preflight --tee-required --write-env-file .env.remote

Spawning a Service Runtime

Kick off the blueprint manager using a specific runtime without re-running the full deploy flow:

cargo tangle blueprint service spawn \
  --http-rpc-url https://rpc.tangle.tools \
  --ws-rpc-url wss://rpc.tangle.tools \
  --keystore-path ./keystore \
  --tangle-contract 0xCf7E... \
  --staking-contract 0xe7f1... \
  --status-registry-contract 0xdC64... \
  --blueprint-id 1 \
  --service-id 2 \
  --spawn-method vm \
  --data-dir ./data \
  --allow-unchecked-attestations

The command reuses the same manager wiring as cargo tangle blueprint run, so any RPC endpoint + runtime combo works (VM/native/container). For devnet, omit the overrides and the defaults point at the local harness.

Key Management

All keys are EVM-native. Use the cargo tangle key subcommands to handle k256 material:

# Generate a new operator key
cargo tangle key generate --key-type ecdsa --output ./keystore

# Import an existing hex secret into the keystore
cargo tangle key import --key-type ecdsa \
  --secret 0x0123... \
  --keystore-path ./keystore \
  --protocol tangle

# List local keys
cargo tangle key list --keystore-path ./keystore

The keystore supports filesystem, in-memory, and remote HSM backends through blueprint-keystore.

Operator Status

Inspect the latest heartbeat/online status from OperatorStatusRegistry:

cargo tangle operator status \
  --http-rpc-url https://rpc.tangle.tools \
  --ws-rpc-url wss://rpc.tangle.tools \
  --keystore-path ./keystore \
  --tangle-contract 0xCf7E... \
  --staking-contract 0xe7f1... \
  --status-registry-contract 0xdC64... \
  --blueprint-id 1 \
  --service-id 2 \
  --operator 0xdeadbeef... \
  --json

Omit --operator to query the locally configured operator. Add --json for machine-friendly output (timestamp, raw status code, online boolean).

  • End-to-end demos and advanced options live on the CLI reference.

Managed GPU JSON boundary

With remote-providers (including cloud-only), cloud catalog/quote/create/recover/status/list/destroy/state-init --json uses the schema version exported by cloud::SCHEMA_VERSION. This source contract is incompatible with the earlier central draft; an installed binary and its consumer must be qualified and pinned together. Legacy cloud status [service], cloud list, configure and tracker termination retain their existing meanings. JSON status/list cannot be combined with legacy status IDs or watch flags.

catalog --json is offline and reads no stdin or inherited credential/config settings. Its public output includes the canonical hardware catalog, actual managed credential variants, generated request/response schemas, schema_sha256 and the input/output ceiling owned by cloud::MAX_JSON_BYTES. Consumers generate provider/envelope/error types from that pinned output and fail their maintained build when regenerated output/digest differs. It is not a second hardware or provider capability table. A descriptor does not promise stock or support for every request shape.

Other JSON verbs accept exactly one bounded document on stdin, followed by EOF, and emit one bounded public envelope on stdout. The parser rejects duplicate and unknown typed fields, excessive nesting, malformed numbers and overflow. Request schemas describe deserialization, so ResourceSpec.env remains input even though it is omitted from serialized state. Errors use the SDK's closed ProviderErrorCode, fixed public text and a nonzero exit. JSON invocations do not initialize inherited tracing; provider bodies and parser errors are not reflected. Put credentials in private stdin/vault custody, never arguments or public files.

Requests use a tagged ProviderCredentials array. Quote/create/recover carry the canonical spec.ownership and spec.lease_duration_secs; there is no second ownership or TTL field. Status/destroy carry one identity, provider, and a provider ID (optional for destroy). Destroy retires only an identity this state_dir authorized under the same account: listed objects of any other identity, including another store's lease on the same account, are refused with conflict and left in place. It waits for an in-flight create of the identity in the same state_dir. List carries namespace and lists the full configured account roster; it has no provider filter. All operations after quote require state_dir; use the exported request schemas for the complete field contract. Quote returns the complete SDK QuoteSet, including failures beside ranked offers. Keep its candidate string unchanged and preserve the exact original spec, caller public key and account roster before create. New quote pricing source is the actual HTTP(S) service origin that returned the offer, without endpoint paths/userinfo/query/fragment. Custom broker origins stay custom; no default vendor URL or fallback rate is substituted. Invalid or opaque sources fail before public quote output.

Create opens existing state and calls state-attached create_managed. Its SDK reservation preserves original quote, account binding, key and deadline before POST. For an attempted identity, repeated create recovers the original authority and ignores a replacement candidate; it never re-prices or rents again. A fresh invalid candidate is refused. recover is no-create and an absent result never permits re-renting that attempted identity. Keep a caller-owned SSH public key in the original spec; this public process boundary never exports a generated private key. Workload environment must be rehydratable under the caller's private custody for identical recovery; SDK state does not serialize it.

state-init is an explicit, resource-free enrollment of an existing empty, owner-only, absolute Unix directory without symlink components. Normal verbs only open it and never repair missing/corrupt state. Central orchestration must own persistent placement, enrollment markers and a single coherent filesystem context across calls/restarts. Temporary HOME is not authority. Carry SDK state, caller records and keys together after stopping the previous writer; independent copies are not coordinated by local file locks. Keep lost state visible for operator reconciliation rather than initializing a replacement store.

Non-default QoS is deliberately unsupported rather than silently applied. Raw TANGLE_GPU_WORKER_TOKEN env is refused, not removed or replaced by an invented bootstrap variable. Central still owns its maintained one-time bootstrap.

Measured ranking uses the full original private recipe. New candidates clone the selected arm with only its measurement copies cleared, while the fingerprint commits the untouched original spec/env/measurements. The SDK validates those selectors against the canonical original arms. The public MeasurementReceipt contains only audit hashes, timestamp, counters, concurrency and TP/replica counts; model/revision/image/raw-result locators are not fields of that response type. It cannot be replayed as a private execution recipe. This changes the Rust ProviderQuote.measurement API and requires a containing minor release/adoption, not a patch compatibility claim. The request schema still accepts full original private measurement rows and the response schema derives the new receipt.

The SDK reads existing version1 authorization records/full-arm candidates without rewriting them, checking legacy full-arm equality and original key/account/spec and deadline. Newly normalized measured candidates need the new validator; downgrading them to old readers is not supported. Candidate encoding is reversible. Public identifiers, origins and digests remain trusted public metadata, not a general secret-string detector, anonymization guarantee or measurement-truth proof.

Public resources omit raw native instance metadata, env, keys and authorizations, retain distinct worker/endpoint/SSH URLs and require reported expiry for every present instance. status is canonical SDK InstanceStatus, with a separate preempted boolean; Running says capacity is running, not that a workload is ready. created_at is retained under its canonical name and is not a measured billing/service start. Central must persist the original absolute expiry in its existing hard-expiry renewal guard, refuse missing/invalid expiry and never replace it with a later observation. Preserve original spec separately from mutable renewal policy. No SDK extension API or second TTL engine is introduced. Provider observations and inventory remain unverified hardware facts.

The maintained process/HTTP qualification requires an actual SDK827-built legacy producer and its reviewed source/artifact receipt via D12_LEGACY_PRODUCER and D12_LEGACY_PRODUCER_RECEIPT. Absence fails the integration parent; it never skips legacy compatibility. The test helper uses old public APIs to create an actual fake-provider full-arm quote/private state, then the new binary recovers/retires it with the same POST count and unchanged record/candidate bytes. This is a source compatibility fixture, not an installed or paid-provider proof.