Source Integrity API
https://source-integrity-api.citymanric.chatgpt.site/api/source-integrityPaid verification
How it worksNo sponsored paid call yet.
Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.
Quality grade
How grading works- ✓ Answers a real HTTP 402 challenge
- ✓ Publishes a /.well-known/x402 descriptor
- ✓ Payment address on record
- ✓ Settlement network declared
- ✓ Price declared
x402 readiness
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 C+, 48.9/100), which weighs availability, payability and on-chain demand. How the two differ
| Valid payment requirements | 10/10 | Payment requirements carry a payee, a mainnet network and a price. |
| Live 402 challenge | 25/25 | Paid endpoint answers with an HTTP 402 challenge (2320 ms). |
| x402 version | n/a | x402 version not observed yet. |
| Signed descriptor | n/a | No x402 standard defines a signed descriptor. |
| Uptime (30 days) | 14.53/15 | 31/32 probes succeeded over 30 days (97%). |
| Resource declaration | 10/10 | Declares 14 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 | 5/5 | seen in a source within 7 days; declares x402. |
| Security declaration | n/a | Payment is the access control for an x402 resource. |
Compared with peers
Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.
- Readiness
- Higher than 93% of peers
- This listing 93 · peer median 78
- Latency
- Faster than 4% of peers
- This listing 2,320 ms · peer median 205 ms
Where it loses the most points, and how to win them back
- 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.
Paid endpoints
14 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://source-integrity-api.citymanric.chatgpt.site/api/procurement-radar
$0.0500 / call
Search public federal award records and return a citation-ready procurement intelligence report.
https://source-integrity-api.citymanric.chatgpt.site/api/v1/procurement-csv
$0.5000 / call
Export up to 20 ranked federal award records as a spreadsheet-ready CSV with official source URLs.
https://source-integrity-api.citymanric.chatgpt.site/api/v1/invoice-template
$0.0500 / call
Download a clean invoice template for freelance and small-business billing.
https://source-integrity-api.citymanric.chatgpt.site/api/v1/meeting-followup
$0.0100 / call
Format private meeting notes into a concise follow-up and action list without storing the notes.
https://source-integrity-api.citymanric.chatgpt.site/api/v1/contracts
$0.0100 / call
Federal Contract Awards: a low-cost live keyword search over USAspending.gov returning up to five ranked awards with recipients, amounts, agencies, dates, descriptions, and official source links.
https://source-integrity-api.citymanric.chatgpt.site/api/v1/encode
$0.0010 / call
Deterministic UTF-8 hashing and encoding for SHA-256, SHA-512, Base64, Base64URL, and hex.
https://source-integrity-api.citymanric.chatgpt.site/api/v1/proposal-kit
$0.2500 / call
Download a reusable Federal Proposal Starter Kit with a bid/no-bid scorecard, compliance matrix, proposal outline, and evidence-first prompt pack.
https://source-integrity-api.citymanric.chatgpt.site/guides/federal-procurement
$0.0020 / call
Crawlable public guide to interpreting federal procurement award records, with traceability and source-quality guidance.
https://source-integrity-api.citymanric.chatgpt.site/api/source-integrity
$0.0100 / call
Fetch public source metadata and a SHA-256 content hash for an AI agent.
https://source-integrity-api.citymanric.chatgpt.site/api/algorand/source-integrity
Verify a public web source before citing it with low-cost Algorand USDC and return provenance metadata plus a SHA-256 content hash.
https://source-integrity-api.citymanric.chatgpt.site/api/source-evidence
$0.0100 / call
Fetch a public webpage and return a citation-ready text excerpt with provenance metadata and a SHA-256 hash.
https://source-integrity-api.citymanric.chatgpt.site/api/algorand/source-evidence
Fetch a public webpage and return a citation-ready text excerpt with provenance metadata and a SHA-256 hash, payable on Algorand.
https://source-integrity-api.citymanric.chatgpt.site/api/source-hash
Fetch a public URL and return its SHA-256 content hash for cheap source verification on Algorand.
https://source-integrity-api.citymanric.chatgpt.site/api/algorand/source-hash
Fetch a public URL and return its SHA-256 content hash, payable on Algorand.
How to call
curl -sS -i -X GET https://source-integrity-api.citymanric.chatgpt.site/api/source-integrity # expect HTTP 402 Payment Required (about $0.001/call)Listed in
Directories this entry was found in.