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io.github.jdhart81/taxcredit-engine

https://mcp.viridisconservation.com/taxcredit-engine/mcp
● healthy model-context-protocol-mcp

uptime_30d 1.0%; p95 102.0ms; conformance: fail

Category
model-context-protocol-mcp
Chains
—
Price
—

Quality grade

How grading works
B 73.0 / 100
Availability 40.0 / 40
Endpoint responded (HTTP 200)
Payability 18.7 / 20
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✗ Price declared
Demand 14.4 / 40
13 distinct payers, 17 USDC transfers in the last 30 days
Owner verified 0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 5 h ago. On-chain activity last read 2 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass. This grade sets search order and leaderboards; the readiness score below is shown for reference only.

x402 readiness

B · 80/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here B, 73.0/100), which weighs availability, payability and on-chain demand. How the two differ

Valid payment requirements 9/10 Findings: missing: price declared.
  • missing: price declared
Live 402 challenge 20/25 Endpoint reachable; its 402 challenge was seen earlier (175 ms).
x402 version n/a x402 version not observed yet.
Signed descriptor n/a No x402 standard defines a signed descriptor.
Uptime (30 days) 15/15 32/32 probes succeeded over 30 days (100%).
Resource declaration 10/10 Declares 9 paid resource(s).
Verified identity 5/10 Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Freshness + modern flags 1/5 not seen in a source for over 30 days; declares x402.
Security declaration n/a Payment is the access control for an x402 resource.
Applicable criteria total 75 points, scaled to 100.
Responsiveness: Responsive (175 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).
Payment evidence: x402_challenge — We sent a request and got a live HTTP 402 challenge. Also: x402_manifest. Qualifies the payment claim; adds no points.
Measured 2026-11-11.
Nine criteria, the same as the A2A readiness score, read from our daily probe of the paid endpoint, its payment requirements and 30-day probe history. Signed descriptor and security declaration are n/a for x402 (payment is the access control), as is an x402 version we have not observed; the remaining points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. Display only: search order uses the quality grade.

Compared with peers

Against 10,060 reachable x402 APIs in our daily snapshot (2026-11-12 01:39 UTC). Display only; it does not change search order.

Readiness
Higher than 55% of peers
This listing 80 · peer median 78
Latency
Faster than 59% of peers
This listing 175 ms · peer median 205 ms

Where it loses the most points, and how to win them back

  • Live 402 challenge −5 — Answer the paid path with a valid 402 challenge.
    Now: Endpoint reachable; its 402 challenge was seen earlier (175 ms).
  • Verified identity −5 — Claim the listing and prove control of its domain.
    Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
  • Freshness + modern flags −4 — Keep the listing current in the registry or source it comes from.
    Now: not seen in a source for over 30 days; declares x402.

How many agent tools actually work · All statistics

Paid endpoints

9 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.

https://mcp.viridisconservation.com/x402/regulatory-radar/scan_regulations

Energy and climate compliance regulation scan across a curated 14-regulation database, with jurisdiction, urgency, and effective-date signals, including California SB 253 and SB 261 status. The scan step pairs with Viridis GHG inventory, sustainability disclosure, and clean-energy tax-credit engines

https://mcp.viridisconservation.com/x402/regulatory-radar/monitor_changes

Monitor regulatory changes, compliance deadlines, and effective dates in a bounded, source-linked regulatory calendar over the curated Viridis dataset. Returns requirements that became effective or have a key date approaching inside the selected day window, with alert level and recommended review ac

https://mcp.viridisconservation.com/x402/taxcredit-engine/calculate_tax_credit

Auditable US clean-energy tax-credit calculator from explicit credit-specific facts. The claim step pairs with the Viridis GHG inventory and sustainability disclosure engines for a chainable compliance workflow.

https://mcp.viridisconservation.com/x402/ghg-ledger/calculate_inventory

Deterministic greenhouse gas inventory API for auditable Scope 1, 2, and 3 accounting from explicit activity records. The accounting step pairs with Viridis embodied-carbon takeoff, disclosure, and tax-credit engines.

https://mcp.viridisconservation.com/x402/quantity-takeoff/calculate_takeoff

Embodied carbon quantity takeoff from a bill of materials or explicit construction geometry, producing auditable material quantities for carbon accounting. The measure step pairs with the Viridis GHG inventory and sustainability disclosure engines.

https://mcp.viridisconservation.com/x402/disclosure-compiler/compile_disclosure

CSRD / IFRS S2 (TCFD-aligned) sustainability disclosure compiler from supplied company facts and optional verified emissions data. The disclose step pairs with Viridis GHG inventory, regulation-scan, and clean-energy tax-credit engines.

https://mcp.viridisconservation.com/x402/hive/solve

Cost-bounded multi-agent solve with three independent workers, reviewer-not-author cross-review, escrow settlement, trust outcomes, compute accounting, and a content-addressed audit. The fixed $5 profile supports at most four subtasks and redundancy three.

https://mcp.viridisconservation.com/x402/os-decisions/build_decision_report

$1 optional orchestration of 1-3 scenarios over free Conservation OS previews, with recomputation checks and a provenance bundle. Unsigned, not reviewed, not certified or empirically validated. Public/synthetic/de-identified inputs only.

https://mcp.viridisconservation.com/x402/wu-wei-router/plan_workload

$1 routing plan for up to 20 profiles and 50 workload groups. Caller-supplied cost and evaluation data; no autonomous execution or verified savings.

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://mcp.viridisconservation.com/taxcredit-engine/mcp  # expect HTTP 402 Payment Required (price advertised in the 402 response)
MCP endpoint
https://mcp.viridisconservation.com/taxcredit-engine/mcp
/.well-known/x402.json
https://mcp.viridisconservation.com/.well-known/x402

Listed in

Directories this entry was found in.

mcp since 2026-07-24