api.particle.pro
https://api.particle.pro/v1/companiesPaid 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 A, 74.8/100), 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 (164 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 124 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. |
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 80% of peers
- This listing 88 · peer median 78
- Latency
- Faster than 63% of peers
- This listing 164 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.
- 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.
Adoption signals
Public signals from outside this directory, shown for context. They do not change search order or grades.
- Site rank (Tranco)
- #549,543 of the top 1M
- particle.pro · list of 2026-11-10
Paid endpoints
124 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://api.particle.pro/v1/companies/{id}/competitors
List company competitors
https://api.particle.pro/v1/companies/{id}/external-links
List a company's external profiles
https://api.particle.pro/v1/companies/{id}/people
List company people
https://api.particle.pro/v1/companies/{id}/podcast/advertising/placements
List company podcast advertising placements
https://api.particle.pro/v1/companies/{id}/podcast/advertising/podcasts
List podcasts carrying company advertising
https://api.particle.pro/v1/companies/{id}/podcast/advertising
Get company advertising profile
https://api.particle.pro/v1/companies/{id}/podcast/recommendations
List podcasts a company could advertise on next
https://api.particle.pro/v1/companies/{id}/products
List company products
https://api.particle.pro/v1/companies/{id}/statement-characteristics
Get how a company's people speak
https://api.particle.pro/v1/companies/{id}
Get a company
https://api.particle.pro/v1/companies
List companies
https://api.particle.pro/v1/entities/lookup
Look up people and companies by external identifier
https://api.particle.pro/v1/entities/search
Search entities
https://api.particle.pro/v1/entities/types
List entity types
https://api.particle.pro/v1/entities/{id}
Get an entity
https://api.particle.pro/v1/entities
List entities
https://api.particle.pro/v1/people/expertise
Find experts
https://api.particle.pro/v1/people/fields/{code}/guests
Rank a field of research's guests
https://api.particle.pro/v1/people/fields/{code}/podcasts
Rank the podcasts that book a field of research
https://api.particle.pro/v1/people/fields/{code}
Get a field of research
https://api.particle.pro/v1/people/fields
List fields of research
https://api.particle.pro/v1/people/occupations/{code}/guests
Rank an occupation's guests
https://api.particle.pro/v1/people/occupations/{code}/podcasts
Rank the podcasts that book an occupation
https://api.particle.pro/v1/people/occupations/{code}
Get an occupation
https://api.particle.pro/v1/people/occupations
List occupations
https://api.particle.pro/v1/people/{id}/expertise
Get a Person's expertise
https://api.particle.pro/v1/people/{id}/statement-characteristics
Get how a Person speaks
https://api.particle.pro/v1/people/{id}
Get a Person
https://api.particle.pro/v1/people/{slug}/external-links
List a Person's external profiles
https://api.particle.pro/v1/podcasts/advertising/co-occurrence
Get sponsor co-occurrence
https://api.particle.pro/v1/podcasts/advertising/leaderboard/preview
Get advertising leaderboard preview
https://api.particle.pro/v1/podcasts/advertising/leaderboard
Get advertising leaderboard
https://api.particle.pro/v1/podcasts/advertising/publishers/leaderboard
Get publisher advertising leaderboard
https://api.particle.pro/v1/podcasts/advertising/sponsors/trends
List trending sponsors
https://api.particle.pro/v1/podcasts/advertising/sponsors/{id}/podcasts
List podcasts for a sponsor
https://api.particle.pro/v1/podcasts/advertising/sponsors/{id}/publishers
List publishers for a sponsor
https://api.particle.pro/v1/podcasts/advertising/sponsors/{id}/segments
List ad segments for a sponsor
https://api.particle.pro/v1/podcasts/advertising/sponsors/{id}
Get a sponsor
https://api.particle.pro/v1/podcasts/advertising/sponsors
List sponsors
https://api.particle.pro/v1/podcasts/advertising/timeseries
Get advertising timeseries
https://api.particle.pro/v1/podcasts/bias/publishers/leaderboard
Rank publishers by political bias metric
https://api.particle.pro/v1/podcasts/bias/{result}/publishers
List publishers with podcasts in a bias bucket
https://api.particle.pro/v1/podcasts/clips/{id}/transcript
Get clip transcript
https://api.particle.pro/v1/podcasts/clips/{id}
Get a clip
https://api.particle.pro/v1/podcasts/clips
List clips
https://api.particle.pro/v1/podcasts/entities/charts/{category}
Get an entity chart
https://api.particle.pro/v1/podcasts/entities/charts
List entity charts
https://api.particle.pro/v1/podcasts/episodes/feed
Poll the episode feed
https://api.particle.pro/v1/podcasts/episodes/lookup
Look up episodes by external identifier
https://api.particle.pro/v1/podcasts/episodes/search
Search podcast episode content
How to call
curl -sS -i -X GET https://api.particle.pro/v1/companies # expect HTTP 402 Payment Required (about 0.01 USDC/call)Listed in
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