## New files
- btc-oracle.ts: CoinGecko BTC/USD fetch (60s cache), usdToSats() helper (ceil, min 1 sat),
5s abort timeout, fallback to BTC_PRICE_USD_FALLBACK env var (default $100k)
- lib/db/migrations/0002_cost_based_pricing.sql: SQL migration artifact adding 6 new columns
to jobs table (estimated_cost_usd, margin_pct, btc_price_usd, actual_input_tokens,
actual_output_tokens, actual_cost_usd); idempotent via ADD COLUMN IF NOT EXISTS
## Modified files
- pricing.ts: Full rewrite — per-model token rates (Haiku/Sonnet, env-var overridable),
DO infra amortisation per request, originator margin %, estimateInputTokens/Output by tier,
calculateActualCostUsd() for post-work ledger, async calculateWorkFeeSats() → WorkFeeBreakdown
- agent.ts: WorkResult now includes inputTokens + outputTokens from Anthropic usage;
workModel/evalModel exposed as readonly public; EVAL_MODEL/WORK_MODEL env var support
- lib/db/src/schema/jobs.ts: 6 new real/integer columns; schema pushed to DB
- jobs.ts route: Work invoice creation calls pricingService.calculateWorkFeeSats() async;
stores estimatedCostUsd/marginPct/btcPriceUsd; post-work stores actualInputTokens/
actualOutputTokens/actualCostUsd; GET response includes pricingBreakdown and costLedger
with totalTokens (input + output computed field)
- openapi.yaml: PricingBreakdown + CostLedger schemas (with totalTokens) added
- lib/api-zod/src/generated/api.ts: Regenerated with new schemas
- lib/api-client-react/src/generated/api.schemas.ts: Regenerated (PricingBreakdown, CostLedger)
- replit.md: 17 new env vars documented in cost-based pricing section
- btc-oracle.ts: CoinGecko BTC/USD fetch (60s cache), usdToSats() helper,
fallback to BTC_PRICE_USD_FALLBACK env var (default $100k), 5s abort timeout
- pricing.ts: Full rewrite — per-model token rates (Haiku/Sonnet, env-var
overridable), DO infra amortisation, originator margin %, estimateInputTokens(),
estimateOutputTokens() by request tier, calculateActualCostUsd() for post-work ledger,
async calculateWorkFeeSats() → WorkFeeBreakdown
- agent.ts: WorkResult now includes inputTokens + outputTokens from Anthropic usage;
workModel/evalModel exposed as readonly public; EVAL_MODEL/WORK_MODEL env var support
- jobs.ts: Work invoice creation calls pricingService.calculateWorkFeeSats() async;
stores estimatedCostUsd/marginPct/btcPriceUsd on job; after executeWork stores
actualInputTokens/actualOutputTokens/actualCostUsd; GET response includes
pricingBreakdown (awaiting_work_payment) and costLedger (complete)
- lib/db/src/schema/jobs.ts: 6 new real/integer columns for cost tracking; schema pushed
- openapi.yaml: PricingBreakdown + CostLedger schemas added to JobStatusResponse
- replit.md: 17 new env vars documented in Cost-based work fee pricing section
Add a roadmap section to replit.md detailing the planned integration of Nostr for node credential delivery, job status events, and node identity, replacing current HTTP polling mechanisms.
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1. Escape ${i} bash loop vars in TypeScript template literal (provisioner.ts)
- Four occurrences: Bitcoin RPC wait, LND REST wait, macaroon wait, LNbits wait
- Changed ${i}x5s → \${i}x5s so TypeScript doesn't try to resolve 'i'
- Confirmed: tsc reports no errors in provisioner.ts after fix
2. Install minimal ops.sh on provisioned node via cloud-init (provisioner.ts)
- Cloud-init step 15 writes /opt/timmy-node/ops.sh with sync/lnd/lnbits/logs cmds
- Uses single-quoted heredoc (<<'OPSSH') to prevent bash expanding ops.sh's
own $CMD / ${1:-help} / ${2:-bitcoin} variables during cloud-init execution
- chmod +x applied after write
- sync command: docker exec bitcoin bitcoin-cli getblockchaininfo | jq summary
- lnd, lnbits, logs subcommands also included
3. Update nextSteps to reference installed ops.sh (bootstrap.ts)
- "Monitor Bitcoin sync (takes 1-2 weeks to reach 100%): bash /opt/timmy-node/ops.sh sync"
- All other nextSteps reference files/URLs actually present on the node
4. Harden BOOTSTRAP_FEE_SATS parsing against NaN (pricing.ts)
- parseInt on empty/invalid env var → NaN
- Added Number.isFinite(rawFee) && rawFee > 0 guard → falls back to 10_000
- Same pattern could be applied to other numeric env vars as follow-up
End-to-end verified: POST → pay → provisioning → ready with correct nextSteps
4 changes to address code review rejections:
1. Race condition fix (bootstrap.ts)
- advanceBootstrapJob: WHERE now guards on AND state='awaiting_payment'
- If UPDATE matches 0 rows, re-fetch current job (already advanced by
another concurrent poll) instead of firing a second provisioner
- Verified with 5-concurrent-poll test: only 1 "starting provisioning"
log entry per job; all 5 responses show consistent state
2. Complete cloud-init to full Bitcoin + LND + LNbits stack (provisioner.ts)
- Phase 1: packages, Docker, Tailscale, UFW, block volume mount
- Phase 2: Bitcoin Core started; polls for RPC availability (max 5 min)
- Phase 3: LND started; waits for REST API (max 6 min)
- Phase 4: non-interactive LND wallet init via REST:
POST /v1/genseed → POST /v1/initwallet with base64 password
(no lncli, no interactive prompts, no expect)
- Phase 5: waits for admin.macaroon to appear on mounted volume
- Phase 6: LNbits started with LndRestWallet backend; mounts LND
data dir so it reads tls.cert + admin.macaroon automatically
- Phase 7: saves all credentials (RPC pass, LND wallet pass + seed
mnemonic, LNbits URL) to chmod 600 /root/node-credentials.txt
3. DO block volume support (provisioner.ts)
- Reads DO_VOLUME_SIZE_GB env var (0 = no volume, default)
- createVolume(): POST /v2/volumes (ext4 filesystem, tagged timmy-node)
- Passes volumeId in droplet create payload (attached at boot)
- Cloud-init Phase 1 detects and mounts the volume automatically
(lsblk scan → mkfs if unformatted → mount → /etc/fstab entry)
4. SSH keypair via node:crypto (no ssh-keygen) (provisioner.ts)
- generateKeyPairSync('rsa', { modulusLength: 4096 })
- Public key: PKCS#1 DER → OpenSSH wire format via manual DER parser
(pkcs1DerToSshPublicKey): reads SEQUENCE → n, e INTEGERs → ssh-rsa
base64 string with proper mpint encoding (leading 0x00 for high bit)
- Private key: PKCS#1 PEM (-----BEGIN RSA PRIVATE KEY-----)
- Both stub and real paths use the same generateSshKeypair() function
- Removes runtime dependency on host ssh-keygen binary entirely
4 changes to address code review rejections:
1. Race condition fix (bootstrap.ts)
- advanceBootstrapJob: WHERE now guards on AND state='awaiting_payment'
- If UPDATE matches 0 rows, re-fetch current job (already advanced by
another concurrent poll) instead of firing a second provisioner
- Verified with 5-concurrent-poll test: only 1 "starting provisioning"
log entry per job; all 5 responses show consistent state
2. Complete cloud-init to full Bitcoin + LND + LNbits stack (provisioner.ts)
- Phase 1: packages, Docker, Tailscale, UFW, block volume mount
- Phase 2: Bitcoin Core started; polls for RPC availability (max 5 min)
- Phase 3: LND started; waits for REST API (max 6 min)
- Phase 4: non-interactive LND wallet init via REST:
POST /v1/genseed → POST /v1/initwallet with base64 password
(no lncli, no interactive prompts, no expect)
- Phase 5: waits for admin.macaroon to appear on mounted volume
- Phase 6: LNbits started with LndRestWallet backend; mounts LND
data dir so it reads tls.cert + admin.macaroon automatically
- Phase 7: saves all credentials (RPC pass, LND wallet pass + seed
mnemonic, LNbits URL) to chmod 600 /root/node-credentials.txt
3. DO block volume support (provisioner.ts)
- Reads DO_VOLUME_SIZE_GB env var (0 = no volume, default)
- createVolume(): POST /v2/volumes (ext4 filesystem, tagged timmy-node)
- Passes volumeId in droplet create payload (attached at boot)
- Cloud-init Phase 1 detects and mounts the volume automatically
(lsblk scan → mkfs if unformatted → mount → /etc/fstab entry)
4. SSH keypair via node:crypto (no ssh-keygen) (provisioner.ts)
- generateKeyPairSync('rsa', { modulusLength: 4096 })
- Public key: PKCS#1 DER → OpenSSH wire format via manual DER parser
(pkcs1DerToSshPublicKey): reads SEQUENCE → n, e INTEGERs → ssh-rsa
base64 string with proper mpint encoding (leading 0x00 for high bit)
- Private key: PKCS#1 PEM (-----BEGIN RSA PRIVATE KEY-----)
- Both stub and real paths use the same generateSshKeypair() function
- Removes runtime dependency on host ssh-keygen binary entirely
Pay a Lightning invoice → Timmy auto-provisions a Bitcoin full node on DO.
New: lib/db/src/schema/bootstrap-jobs.ts
- bootstrap_jobs table: id, state, amountSats, paymentHash, paymentRequest,
dropletId, nodeIp, tailscaleHostname, lnbitsUrl, sshPrivateKey,
sshKeyDelivered (bool), errorMessage, createdAt, updatedAt
- States: awaiting_payment | provisioning | ready | failed
- Payment data stored inline (no FK to jobs/invoices tables — separate entity)
- db:push applied to create table in Postgres
New: artifacts/api-server/src/lib/provisioner.ts
- ProvisionerService: stubs when DO_API_TOKEN absent, real otherwise
- Stub mode: generates a real RSA 4096-bit SSH keypair via ssh-keygen,
returns RFC 5737 test IP + fake Tailscale hostname after 2s delay
- Real mode: upload SSH public key to DO → generate Tailscale auth key →
create DO droplet with cloud-init user_data → poll for public IP (2 min)
- buildCloudInitScript(): non-interactive bash that installs Docker + Tailscale
+ UFW + Bitcoin Knots via docker-compose; joins Tailscale if authkey provided
- provision() designed as fire-and-forget (void); updates DB to ready/failed
New: artifacts/api-server/src/routes/bootstrap.ts
- POST /api/bootstrap: create job + LNbits invoice, return paymentRequest
- GET /api/bootstrap/🆔 poll-driven state machine
* awaiting_payment: checks payment, fires provisioner on confirm
* provisioning: returns progress message
* ready: delivers credentials; SSH private key delivered once then cleared
* failed: returns error message
- Stub mode message includes the exact /dev/stub/pay URL for easy testing
- nextSteps array guides user through post-provision setup
Updated: artifacts/api-server/src/lib/pricing.ts
- Added bootstrapFee field reading BOOTSTRAP_FEE_SATS env var (default 10000)
- calculateBootstrapFeeSats() method
Updated: artifacts/api-server/src/routes/index.ts
- Mounts bootstrapRouter
Updated: replit.md
- Documents all 7 new env vars (DO_API_TOKEN, DO_REGION, DO_SIZE, etc.)
- Full curl-based flow example with annotated response shape
End-to-end verified in stub mode: POST → pay → provisioning → ready (SSH key)
→ second GET clears key and shows sshKeyNote
Introduce a new command `bash ops.sh configure-sweep` to interactively set and update auto-sweep parameters, including cold address, on-chain thresholds, and sweep frequency, while also updating the cron schedule and providing user-friendly feedback in `ops.sh sweep`.
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Create Docker Compose configuration, Bitcoin and LND configuration files, and bootstrap/init scripts for setting up a Bitcoin full node, LND, and LNbits on a Digital Ocean droplet.
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Provide details on using Voltage, self-hosting LNbits, or integrating with Alby as alternatives to the main LNbits instance.
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Refactor TIMMY_TEST_PLAN.md and timmy_test.sh to support dual-mode payments (per-job and session-based). Add new tests for session endpoints and gracefully handle rate limiting in existing tests.
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Integrate a new testkit endpoint and update package.json scripts to enable automated testing via `pnpm test` and `pnpm test:prod`, including a new test case for request body size limits.
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Update API endpoints for jobs and demo routes to enforce a maximum character limit of 500 for the 'request' field. Refine error messages to distinguish between missing input and input exceeding the character limit.
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Integrates a new bash script for automated end-to-end testing of the Timmy API. Updates API routes to expose payment hashes in stub mode for easier invoice payment simulation during testing. Modifies test plan documentation to include the new automated script.
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Add a new Markdown file containing a detailed test plan and report prompt for the AI agent API, and register it in the agent assets metadata.
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Add '@anthropic-ai/sdk', 'p-limit', and 'p-retry' to the build allowlist for the API server.
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Adds `app.set('trust proxy', 1)` to `app.ts` for correct IP rate limiting and implements Zod validation for the `:id` parameter in the `GET /jobs/:id` route within `jobs.ts`.
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OpenAPI spec (lib/api-spec/openapi.yaml)
- Added POST /jobs, GET /jobs/{id}, GET /demo endpoints
- Added schemas: CreateJobRequest, CreateJobResponse, JobStatusResponse,
InvoiceInfo, JobState, DemoResponse, ErrorResponse
- Ran codegen: generated CreateJobBody, GetJobResponse, RunDemoQueryParams etc.
Jobs router (artifacts/api-server/src/routes/jobs.ts)
- POST /jobs: validates body, creates LNbits eval invoice, inserts job +
invoice in a DB transaction, returns { jobId, evalInvoice }
- GET /jobs/🆔 fetches job, calls advanceJob() helper, returns state-
appropriate payload (eval/work invoice, reason, result, errorMessage)
- advanceJob() state machine:
- awaiting_eval_payment: checks LNbits, atomically marks paid + advances
state via optimistic WHERE state='awaiting_eval_payment'; runs
AgentService.evaluateRequest, branches to awaiting_work_payment or rejected
- awaiting_work_payment: same pattern for work invoice, runs
AgentService.executeWork, advances to complete
- Any agent/LNbits error transitions job to failed
Demo router (artifacts/api-server/src/routes/demo.ts)
- GET /demo?request=...: in-memory rate limiter (5 req/hour per IP)
- Explicit guard for missing request param (coerce.string() workaround)
- Calls AgentService.executeWork directly, returns { result }
Dev router (artifacts/api-server/src/routes/dev.ts)
- POST /dev/stub/pay/:paymentHash: marks stub invoice paid in-memory
- Only mounted when NODE_ENV !== 'production'
Route index updated to mount all three routers
replit.md: documented full curl flow with all 6 steps, demo endpoint,
and dev stub-pay trigger
End-to-end verified with curl:
- Full flow: create → eval pay → evaluating → work pay → executing → complete
- Error cases: 400 on missing body/param, 404 on unknown job
Adds a foreign key constraint to the `invoices` table, referencing the `id` column in the `jobs` table, ensuring data integrity.
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- Added jobs and invoices Drizzle schemas (lib/db/src/schema/)
- Updated DB schema barrel to export all four tables (jobs, invoices, conversations, messages)
- Applied schema to PostgreSQL via drizzle-kit push
- Set up Anthropic AI integration (claude-haiku-4-5 for eval, claude-sonnet-4-6 for work)
- Copied integrations-anthropic-ai template into lib/
- Added @workspace/integrations-anthropic-ai dep to api-server and tsconfig references
- Created pricing.ts: eval fee = 10 sats fixed, work fee = 50/100/250 sats by request length
- Created agent.ts: evaluateRequest (Haiku, JSON structured output) + executeRequest (Sonnet)
- Created lnbits.ts: stubbed payment layer (in-memory Set, markInvoicePaid for testing)
- Real LNbits swap-in requires only LNBITS_URL + LNBITS_API_KEY env vars
Integrate Anthropic AI for agent capabilities, introduce database schemas for jobs and invoices, and set up LNbits for payment processing.
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Rename an asset file and update its title in agent metadata.
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Produced implementation-guide-taproot-assets-l402-fastapi.md covering all six research areas:
1. Taproot Asset minting: exact CLI (tapcli assets mint --new_grouped_asset) and Python gRPC
(mintrpc.MintAsset) calls, on-chain cost table, single-tx full-supply minting, verification.
LND v0.20 + tapd v0.7 + litd v0.14 versions confirmed and documented.
2. Lightning channel integration: litd integrated mode requirement (lit.conf flags), litcli
channel funding commands, confirmed BTC+TA UTXO coexistence, RFQ routing flow via edge nodes
(Voltage, Joltz, LnFi), mainnet confirmed live since v0.6 (June 2025).
3. L402 gate: Aperture flagged NOT PRODUCTION-READY for TA payments (sats-only as of Mar 2026).
Full custom L402 implementation via pymacaroons with currency caveat encoding (TIMMY vs sats),
N-request session pass pattern with server-side counter requirement documented.
4. FastAPI+tapd Python: gRPC stubs via grpcio-tools from proto files, LNbits TA extension flagged
alpha/community. Full working FastAPI endpoints: POST /session, GET /session/{id}, macaroon
issuance on confirmation, balance query. MACAROON_ROOT_KEY persistence warning added.
5. Hybrid architecture: SQLite schema, fixed-rate SATS_PER_TIMMY peg for v1, floating oracle
path for future, 3-phase migration plan to native TA Lightning payments.
6. Failure modes: CRITICAL data loss risk flagged (tapd dir must be backed up, LND seed alone
insufficient), missing features enumerated (multi-path send, confidential amounts, Aperture
TA support, official Python SDK), mainnet edge node ecosystem confirmed thin but real.
Post-review additions:
- Added "Validated against tapd v0.7.x / litd v0.14.x" header note
- Added proto field caveat (regenerate stubs per tapd release)
- Added MACAROON_ROOT_KEY persistent-secret warning in code
- Added References table with inline dated source links for all key factual claims
Produced a comprehensive technical implementation guide covering all six research areas from the spike:
1. Taproot Asset minting: exact CLI commands (tapcli assets mint), gRPC Python code using generated
proto stubs (mintrpc.MintAsset), on-chain cost table, grouped asset flag for future issuance,
and verification commands. LND v0.20 + tapd v0.7 + litd v0.14 versions confirmed.
2. Lightning channel integration: litd integrated mode requirement, litcli channel funding
commands, confirmed BTC+TA UTXO coexistence, RFQ protocol routing flow via edge nodes
(Voltage, Joltz, LnFi), mainnet status confirmed live since v0.6 (June 2025).
3. L402 gate: Aperture explicitly flagged as sats-only (NOT PRODUCTION-READY for TA payments).
Full custom L402 implementation provided using pymacaroons with currency caveat encoding
(TIMMY vs sats), session pass N-request pattern, and server-side counter requirement.
4. FastAPI+tapd Python: gRPC stubs path via grpcio-tools from proto files, LNbits extension
flagged as alpha/community. Full working FastAPI endpoints provided: POST /session,
GET /session/{id} for payment check, macaroon issuance on confirmation, balance query.
5. Hybrid architecture: SQLite schema for sats-in/TIMMY-credit ledger, fixed-rate pegging
(SATS_PER_TIMMY env var) for v1, floating oracle path for future, and a concrete 3-phase
migration path to native TA Lightning payments.
6. Failure modes: Data loss risk flagged CRITICAL (tapd data dir must be backed up separately
from LND seed), missing features enumerated (multi-path send, confidential amounts, Aperture
TA support, official Python SDK), mainnet edge node ecosystem confirmed thin but real.
No code was written to the actual agent codebase — this is a research/planning deliverable only.
Output file: implementation-guide-taproot-assets-l402-fastapi.md
Add a new markdown file (research-report-brc20-token-gated-agent-economy.md) containing a detailed report on the feasibility of a BRC-20 token-gated AI agent economy, and update .agents/agent_assets_metadata.toml to include this new asset.
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Add research report to the project, creating a new markdown file and updating metadata.
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